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  • 1. Allard, Christina
    et al.
    Axelsson, Per
    Umeå University, Faculty of Arts, Centre for Sami Research.
    Brännlund, Isabelle
    Umeå University, Faculty of Arts, Centre for Sami Research.
    Cocq, Coppélie
    Umeå University, Faculty of Arts, Department of language studies.
    Hjortfors, Lis-Mari
    Umeå University, Faculty of Arts, Department of language studies. Umeå University, Faculty of Arts, Centre for Sami Research.
    Jacobsson, Lars
    Umeå University, Faculty of Medicine, Department of Clinical Sciences.
    Ledman, Anna-Lill
    Umeå University, Faculty of Arts, Centre for Sami Research.
    Löf, Annette
    Umeå University, Faculty of Arts, Centre for Sami Research.
    Johansson Lönn, Eva
    Umeå University, Faculty of Arts, Department of culture and media studies.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Nilsson, Lena Maria
    Umeå University, Arctic Research Centre at Umeå University.
    Nordin, Gabriella
    Umeå University, Arctic Research Centre at Umeå University.
    Nordlund, Christer
    Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
    Norlin, Björn
    Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
    Outakoski, Hanna
    Umeå University, Faculty of Arts, Department of language studies.
    Reimerson, Elsa
    Umeå University, Faculty of Social Sciences, Department of Political Science.
    Sandström, Camilla
    Umeå University, Faculty of Social Sciences, Department of Political Science.
    Sandström, Moa
    Umeå University, Faculty of Arts, Centre for Sami Research. Umeå University, Faculty of Arts, Department of language studies.
    Sehlin MacNeil, Kristina
    Umeå University, Faculty of Arts, Department of culture and media studies.
    Sköld, Peter
    Umeå University, Faculty of Arts, Centre for Sami Research.
    Stoor, Krister
    Umeå University, Faculty of Arts, Department of language studies.
    Storm Mienna, Christina
    Umeå University, Faculty of Arts, Centre for Sami Research.
    Svonni, Charlotta
    Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
    Vinka, Mikael
    Össbo, Åsa
    Umeå University, Faculty of Arts, Department of language studies.
    Rasbiologiskt språkbruk i statens rättsprocess mot sameby2015In: Dagens Nyheter, ISSN 1101-2447Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Statens hantering av forskningsresultat i rättsprocessen med Girjas sameby utgör ett hot mot Sverige som rättsstat och kunskapsnation. Åratal av svensk och internationell forskning underkänns och man använder ett språkbruk som skulle kunna vara hämtat från rasbiologins tid. Nu måste staten ta sitt ansvar och börja agera som en demokratisk rättsstat, skriver 59 forskare.

  • 2.
    Aune, K
    et al.
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Jonsson, B G
    Moen, J
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Isolation and edge effects among woodland key habitats in Sweden: is forest policy promoting fragmentation?2005In: Biological Conservation, Vol. 124, p. 89-95Article in journal (Refereed)
  • 3. Axelsson-Linkowski, Weronika
    et al.
    Fjellström, Anna-Maria
    Sandström, Camilla
    Umeå University, Faculty of Social Sciences, Department of Political Science.
    Westin, Anna
    Östlund, Lars
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Shifting Strategies between Generations in Sami Reindeer Husbandry: the Challenges of Maintaining Traditions while Adapting to a Changing Context2020In: Human Ecology, ISSN 0300-7839, E-ISSN 1572-9915, Vol. 48, p. 481-490Article in journal (Refereed)
    Abstract [en]

    Many traditional pastoralist systems are greatly impacted by cumulative encroachments of other land users and by climate change. Understanding land degradation and the adaptive capacity of people who are dependent on the rangelands is an urgent priority for many areas in the world. In this research we explore how changing environmental conditions affect herding strategies on winter pastures and the role of indigenous and local traditional knowledge (ILK) in Sami reindeer husbandry. Our results indicate that traditional Sami reindeer herding strategies are still practiced, but that rapidly changing environmental circumstances are forcing herders into uncharted territories where these traditional strategies and the transmission of knowledge between generations may be of limited use. For example, rotational grazing is no longer possible as all pastures are being used, and changes in climate result in unpredictable weather patterns unknown to earlier generations.

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  • 4. Barredo, José I.
    et al.
    Bastrup-Birk, Annemarie
    Teller, Anne
    Onaindia, Miren
    Fernández de Manuel, Beatriz
    Madariaga, Iosu
    Rodríguez-Loinaz, Gloria
    Pinho, Pedro
    Nunes, Alice
    Ramos, Alzira
    Batista, Melanie
    Mimo, Sara
    Cordovil, Claudia
    Branquinho, Cristina
    Grêt-Regamey, Adrienne
    Bebi, Peter
    Brunner, Sibyl Hanna
    Weibel, Bettina
    Kopperoinen, Leena
    Itkonen, Pekka
    Viinikka, Arto
    Chirici, Gherardo
    Bottalico, Francesca
    Pesola, Lucia
    Vizzarri, Matteo
    Garfì, Vittorio
    Antonello, Leonardo
    Barbati, Anna
    Corona, Piermaria
    Cullotta, Sebastiano
    Giannico, Vincenzo
    Lafortezza, Raffaele
    Lombardi, Fabio
    Marchetti, Marco
    Nocentini, Susanna
    Riccioli, Francesco
    Travaglini, Davide
    Sallustio, Lorenzo
    Rosário, Inês
    von Essen, Marios
    Nicholas, Kimberly A.
    Máguas, Cristina
    Rebelo, Rui
    Santos-Reis, Margarida
    Santos-Martín, Fernando
    Zorrilla-Miras, Pedro
    Montes, Carlos
    Benayas, Javier
    Martín-López, Berta
    Snäll, Tord
    Berglund, Håkan
    Bengtsson, Jan
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Busetto, Lorenzo
    San-Miguel-Ayanz, Jesús
    Thurner, Martin
    Beer, Christian
    Santoro, Maurizio
    Carvalhais, Nuno
    Wutzler, Thomas
    Schepaschenko, Dmitry
    Shvidenko, Anatoly
    Kompter, Elisabeth
    Ahrens, Bernhard
    Levick, Shaun R.
    Schmullius, Christiane
    Mapping and assessment of forest ecosystems and their services: Applications and guidance for decision making in the framework of MAES2015Report (Other academic)
    Abstract [en]

    The aim of this report is to illustrate by means of a series of case studies the implementation of mapping and assessment of forest ecosystem services in different contexts and geographical levels. Methodological aspects, data issues, approaches, limitations, gaps and further steps for improvement are analysed for providing good practices and decision making guidance. The EU initiative on Mappingand Assessment of Ecosystems and their Services (MAES), with the support of all Member States, contributes to improve the knowledge on ecosystem services. MAES is one of the building-block initiatives supporting the EU Biodiversity Strategy to 2020.

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  • 5. Berg, Anna
    et al.
    Östlund, Lars
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Olofsson, Johan
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    A century of logging and forestry in a reindeer herding area in northern Sweden2008In: Forest Ecology and Management, ISSN 0378-1127, E-ISSN 1872-7042, Vol. 256, p. 1009-1020Article in journal (Refereed)
    Abstract [en]

    Boreal forest ecosystems are generally highly sensitive to logging and other forestry activities. Thus, commercial forestry has had major effects on the forests and landscape structure in northern Sweden since the middle of the 19th Century, when it rapidly extended across the region. Lichens (which constitute up to 80% of reindeer forage in winter and early spring) have often been amongst the most severely affected ecosystem components. The overall aim of the present study was to analyze how forestry has influenced the potential supply of ground-growing lichens as winter forage for the reindeer in this region over the past ca. 100 years. For this purpose, we analysed changes in forest and stand structure in Scots pine-dominated (Pinus sylvestris L.) reindeer wintering areas in the southern part of the county Norrbotten (covering ca. 58,000 ha) using detailed historical forest inventories and management plans. We found that the amount of the forest types considered potentially good pasture (mainly middleaged and old pine forests) decreased during the first part of the 20th Century. However, the quality of grazing grounds was improved by forestry during this time mainly because selective logging made the forests more open which benefits lichen growth. During the last part of the 20th century forestry impaired the quality of grazing grounds in several ways, e.g. by clear-cutting and intensified use of various silviculturalmeasures. We conclude that ca. 30–50% of the winter grazing grounds have been lost in the study area because of intensive forest management during the last century. The spatially precise historical information about the affects of forestry on lichen pasture provided in this study can be used to direct forest management which will facilitate and promote reindeer herding in the future.

  • 6. Bernes, Claes
    et al.
    Brathen, Kari Anne
    Forbes, Bruce C.
    Speed, James D. M.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    What are the impacts of reindeer/caribou (Rangifer tarandus L.) on arctic and alpine vegetation?: A systematic review2015In: Environmental Evidence, E-ISSN 2047-2382, Vol. 4, no 4Article, review/survey (Refereed)
    Abstract [en]

    Background: The reindeer (or caribou, Rangifer tarandus L.) has a natural range extending over much of Eurasia's and North America's arctic, alpine and boreal zones, yet its impact on vegetation is still unclear. This lack of a common understanding hampers both the management of wild and semi-domesticated reindeer populations and the preservation of biodiversity. To achieve a common platform, we have undertaken a systematic review of published studies that compare vegetation at sites with different reindeer densities. Besides biodiversity, we focused on effects on major plant growth forms. Methods: Searches for literature were made using online publication databases, search engines, specialist websites and bibliographies of literature reviews. Search terms were developed in English, Finnish, Norwegian, Russian and Swedish. Identified articles were screened for relevance based on titles, abstracts and full text using inclusion criteria set out in an a priori protocol. Relevant articles were then subject to critical appraisal of susceptibility to bias. Data on outcomes such as abundance, biomass, cover and species richness of vegetation were extracted together with metadata on site properties and other potential effect modifiers. Results: Our searches identified more than 6,000 articles. After screening for relevance, 100 of them remained. Critical appraisal excluded 60 articles, leaving 40 articles with 41 independent studies. Almost two thirds of these studies had been conducted in Fennoscandia. Meta-analysis could be made of data from 31 of the studies. Overall, effects of reindeer on species richness of vascular plants depended on temperature, ranging from negative at low temperature to positive at high temperature. Effects on forbs, graminoids, woody species, and bryophytes were weak or non-significant, whereas the effect on lichens was negative. However, many individual studies showed clear positive or negative effects, but the available information was insufficient to explain this context dependence. Conclusions: We see two pressing matters emerging from our study. First, there is a lack of research with which to build a circumpolar understanding of grazing effects, which calls for more studies using a common protocol to quantify reindeer impacts. Secondly, the highly context-dependent outcomes suggest that research and management have to consider local conditions. For instance, predictions of what a management decision would mean for the effects of reindeer on vegetation will have to take the variation of vegetation types and dominant growth forms, productivity, and grazing history into account. Policy and management have to go hand-in-hand with research in individual cases if the dynamics between plants, animals, and humans are to be sufficiently understood.

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  • 7. Bernes, Claes
    et al.
    Bråthen, Kari Anne
    Forbes, Bruce C.
    Hofgaard, Annika
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Speed, James D.M.
    What are the impacts of reindeer/caribou (Rangifer tarandus L.) on arctic and alpine vegetation?: A systematic review protocol2013In: Environmental Evidence, E-ISSN 2047-2382, Vol. 2, article id 6Article in journal (Refereed)
    Abstract [en]

    Background: Reindeer and caribou (both belonging to the species Rangifer tarandus L.) are among the most important large herbivores in Eurasia’s and North America’s arctic, alpine and boreal zones. In Sweden, the impact of reindeer grazing on arctic and alpine vegetation has recently been re-evaluated. In the 1990s, records of grazing-related vegetation degradation helped to form a widespread perception that some mountain areas were overgrazed. However, later analyses have shown no evidence of large-scale overutilisation of reindeer ranges in the Swedish mountains.

    The present-day consensus is that overgrazing has been temporary and local, and that it rarely has caused permanent damage, but it is imperative to examine the scientific support for these views. Moreover, the Swedish Parliament has adopted an environmental quality objective according to which it is essential to preserve ‘a mountain landscape characterised by grazing’. No details have been given on how this goal is to be interpreted, which is another reason why the significance of reindeer grazing for arctic/alpine vegetation needs to be assessed.

    This protocol presents the methodology that will be used in a systematic review of the impact of reindeer herbivory in arctic and alpine ecosystems. The focus will be on Fennoscandia, but data from other parts of the range of R. tarandus will be used when deemed appropriate.

    Methods: The review will be based on primary field studies that compare vegetation subject to different degrees of reindeer/caribou herbivory (including grazing and browsing as well as trampling). Such comparisons can be either temporal, spatial or both. The review will cover impacts of herbivory in arctic, subarctic, alpine and subalpine areas (including the forest-tundra ecotone) across the range of R. tarandus, but not in boreal forests. Relevant aspects of vegetation include cover (abundance), biomass, diversity (e.g. species richness), structure, composition (including functional groups) and productivity.

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  • 8. Bruun , Hans Henrik
    et al.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Virtanen, Risto
    Grytnes, John-Arvid
    Oksanen, Lauri
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Angerbjörn, Anders
    Effects of altitude and topography on species richness of vascular plants, bryophytes and lichens in alpine communities2006In: Journal of Vegetation Science, ISSN 1100-9233, E-ISSN 1654-1103, Vol. 17, p. 37-46Article in journal (Refereed)
    Abstract [en]

    Question: What is the relationship between species richness of vascular plants, bryophytes and macrolichens, and two important gradients in the alpine environment, altitude and local topography?

    Location: Northernmost Fennoscandia, 250–1525 m a.s.l. corresponding to the range between timberline and mountain top.

    Methods: The vegetation was sampled in six mountain areas. For each 25 vertical metres, the local topographic gradient from wind-blown ridge to snowbed was sampled in quadrats of 0.8 m × 0.8 m. Patterns in species richness were explored using Poisson regression (Generalized Linear Models). Functional groups of species, i.e. evergreen and deciduous dwarf-shrubs, forbs, graminoids, mosses, hepatics and lichens were investigated separately.

    Results: Functional groups showed markedly different patterns with respect to both altitude and topography. Species richness of all vascular plants showed a unimodal relationship with altitude. The same was true for graminoids, forbs and lichens analysed separately, but forb richness peaked at much higher altitudes than total richness. The richness of dwarf-shrubs decreased monotonically with altitude, whereas richness of mosses and liverworts showed an increasing trend. Significant interactions between altitude and local topography were present for several groups. The unimodal pattern for total plant species richness was interpreted in terms of local productivity, physical disturbance, trophic interactions, and in terms of species pool effects.

    Conclusions: Patterns in local species richness result from the action of two opposing forces: declining species pool and decreasing intensity of competition with altitude. N

    omenclature: Nilsson (1986) and Hallingbäck (1995, 1996) for vascular plants, lichens and bryophytes, respectively.

  • 9. Bruun, H H
    et al.
    Österdahl, S
    Moen, J
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Angerbjörn, A
    Distinct patterns in alpine vegetation around dens of the Arctic fox2005In: Ecography, Vol. 28, p. 81-87Article in journal (Refereed)
  • 10. Cairns, D
    et al.
    Moen, J
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Herbivory influences treelines2004In: Journal of Ecology, Vol. 92, p. 1019-1024Article in journal (Refereed)
  • 11. Cairns, David M.
    et al.
    Lafon, Charles W.
    Mouton, Michelle F.
    Stuteville, Rachel L.
    Young, Amanda B.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Comparing two methods for ageing trees with suppressed, diffuse-porous rings (Betula pubescens ssp. czerepanovii)2012In: Dendrochronologia, ISSN 1125-7865, E-ISSN 1612-0051, Vol. 30, no 4, p. 252-256Article in journal (Refereed)
    Abstract [en]

    The annual growth rings of diffuse porous species such as mountain birch are often difficult to distinguish when samples are collected from trees that grow at treeline or in other harsh environments. In this study we document the differences in seedling and sapling ring counts obtained from two methods of analysis: a traditional analysis based on reflected light and low-power microscopy and one based on transmitted light with higher power magnification that uses thin-sections of the samples. Rings are easier to resolve using the more labor-intensive transmitted light method. Small rings are often missed when using the reflected light method, resulting in an underestimation of tree age. The dates estimated by the standard method agreed with those determined using the thin-sectioning method in 9.6% of the cases. Most commonly, the standard method gave a younger age than did thin-sectioning (72.4% of the trees). In only 18.03% of the cases did the standard method result in a greater age than did thin-sectioning. The reflected light method produced age estimations that were on average 1.37 years younger than those determined using the transmitted light method. The difference between the two methods was positively correlated with age and negatively correlated with mean ring-width. Age-class histograms based on the two methods show little difference at coarser aggregation levels (decades and pentads), but annualized age-class histograms have less agreement between the two methods. Therefore, we suggest using the more labor-intensive thin-sectioning method when annualized age counts are necessary in suppressed seedlings and saplings, for example, comparing tree establishment with annual climate conditions at treeline.

  • 12. Cairns, D.M.
    et al.
    Lafon , C.
    Moen, Mon
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Young , A.
    Influences of animal activity on treeline position and pattern: Implications for treeline responses to climate change2007In: Physical geography, ISSN 0272-3646, E-ISSN 1930-0557, Vol. 28, no 5, p. 419-433Article in journal (Refereed)
    Abstract [en]

    The alpine treeline is a potentially sensitive indicator of vegetation response to climate change. However, there is not a generally accepted single hypothesis that explains treeline position and pattern at multiple scales. Recently a set of five hypotheses has been proposed for treeline explanations (Körner, 2003b). The impacts of animals are not explicitly included in any of these hypotheses, however, they can and should be included. In this review we discuss Körner's five hypotheses and explain how animal activity can be included within them to make them more applicable to treeline environments experiencing a changing climate. We utilize the conceptual model proposed by Cairns and Moen (2004) as an organizing framework for the inclusion of animal activity with existing hypotheses. Finally we suggest that the equivocal nature of treeline response to climate change may be in part related to animal activity.

  • 13. Danell, Ö
    et al.
    Bergström, R
    Moen, J
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Insect avoidance may override human disturbances in reindeer habitat selection2004In: Rangifer, Vol. 24, p. 95-103Article in journal (Refereed)
  • 14. Eriksson, Åsa
    et al.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Effekter av skogsbruk på rennäringen: en litteraturstudie2008Report (Other academic)
  • 15.
    Frenkel, Martin
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Johansson Jänkänpää, Hanna
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology.
    Jansson, Stefan
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Plant photoprotection influences herbivore preferencesManuscript (preprint) (Other (popular science, discussion, etc.))
  • 16.
    Frenkel, Martin
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Johansson Jänkänpää, Hanna
    Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Jansson, Stefan
    Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    An illustrated gardener's guide to transgenic Arabidopsis field experiments2008In: New Phytologist, ISSN 0028-646X, E-ISSN 1469-8137, Vol. 180, no 2, p. 545-555Article in journal (Refereed)
    Abstract [en]

    Field studies with transgenic Arabidopsislines have been performed over 8 yr, to better understand the influence that certain genes have on plant performance. Many (if not most) plant phenotypes cannot be observed under the near constant, low-stress conditions in growth chambers, making field experiments necessary. However, there are challenges in performing such experiments: permission must be obtained and regulations obeyed, the profound influence of uncontrollable biotic and abiotic factors has to be considered, and experimental design has to be strictly controlled.

    The aim here is to provide inspiration and guidelines for researchers who are not used to setting up such experiments, allowing others to learn from our mistakes. This is believed to be the first example of a ‘manual’ for field experiments with transgenic Arabidopsisplants. Many of the challenges encountered are common for all field experiments, and many researchers from ecological backgrounds are skilled in such methods. There is huge potential in combining the detailed mechanistic understanding of molecular biologists with ecologists’ expertise in examining plant performance under field conditions, and it is suggested that more interdisciplinary collaborations will open up new scientific avenues to aid analyses of the roles of genetic and physiological variation in natural systems.

  • 17.
    Frenkel, Martin
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Külheim, Carsten
    Johansson Jänkänpää, Hanna
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Skogström, Oskar
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Dall Osto, Luca
    Ågren, Jon
    Bassi, Roberto
    Moritz, Thomas
    Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Jansson, Stefan
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Improper excess light energy dissipation in Arabidopsis results in a metabolic reprogramming2009In: BMC Plant Biology, E-ISSN 1471-2229, Vol. 9, no 12, p. 1-16Article in journal (Refereed)
    Abstract [en]

    Background: Plant performance is affected by the level of expression of PsbS, a key photoprotective protein involved in the process of feedback de-excitation (FDE), or the qE component of non-photochemical quenching, NPQ.

    Results: In studies presented here, under constant laboratory conditions the metabolite profiles of leaves of wild-type Arabidopsis thaliana and plants lacking or overexpressing PsbS were very similar, but under natural conditions their differences in levels of PsbS expression were associated with major changes in metabolite profiles. Some carbohydrates and amino acids differed ten-fold in abundance between PsbS-lacking mutants and over-expressers, with wild-type plants having intermediate amounts, showing that a metabolic shift had occurred. The transcriptomes of the genotypes also varied under field conditions, and the genes induced in plants lacking PsbS were similar to those reportedly induced in plants exposed to ozone stress or treated with methyl jasmonate (MeJA). Genes involved in the biosynthesis of JA were up-regulated, and enzymes involved in this pathway accumulated. JA levels in the undamaged leaves of field-grown plants did not differ between wild-type and PsbS-lacking mutants, but they were higher in the mutants when they were exposed to herbivory.

    Conclusion: These findings suggest that lack of FDE results in increased photooxidative stress in the chloroplasts of Arabidopsis plants grown in the field, which elicits a response at the transcriptome level, causing a redirection of metabolism from growth towards defence that resembles a MeJA/JA response.

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  • 18.
    Frenkel, Martin
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Külheim, Carsten
    Johansson Jänkänpää, Hanna
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Skogström, Oskar
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Frigerio, Sara
    Ågren, Jon
    Bassi, Roberto
    Moritz, Thomas
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Jansson, Stefan
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Improper regulation of light harvesting in Arabidopsis results in a metabolic reprogrammingManuscript (preprint) (Other (popular science, discussion, etc.))
  • 19. Gaio-Oliveira, G
    et al.
    Moen, J
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Danell, Ö
    Palmqvist, K
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Effect of simulated reindeer grazing on the re-growth capacity of mat-forming lichens2006In: Basic and Applied Ecology, Vol. 7, p. 109-121Article in journal (Refereed)
  • 20.
    Gamfeldt, Lars
    et al.
    SLU; Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.
    Snäll, Tord
    SLU.
    Bagchi, Robert
    Department of Biological and Biomedical Sciences, Durham University, Durham UK.
    Jonsson, Micael
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Gustafsson, Lena
    SLU.
    Kjellander, Petter
    Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences, Riddarhyttan, Sweden.
    Ruiz-Jaen, María C
    Environmental Change Institute, Oxford, UK.
    Fröberg, Mats
    SLU.
    Stendahl, Johan
    SLU.
    Philipson, Christopher D
    Institute of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland.
    Mikusiński, Grzegorz
    Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences, Riddarhyttan, Sweden.
    Andersson, Erik
    SLU; Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden.
    Westerlund, Bertil
    SLU.
    Andrén, Henrik
    Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences, Riddarhyttan, Sweden.
    Moberg, Fredrik
    Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Bengtsson, Jan
    SLU.
    Higher levels of multiple ecosystem services are found in forests with more tree species2013In: Nature Communications, E-ISSN 2041-1723, Vol. 4, article id 1340Article in journal (Refereed)
    Abstract [en]

    Forests are of major importance to human society, contributing several crucial ecosystem services. Biodiversity is suggested to positively influence multiple services but evidence from natural systems at scales relevant to management is scarce. Here, across a scale of 400,000 km(2), we report that tree species richness in production forests shows positive to positively hump-shaped relationships with multiple ecosystem services. These include production of tree biomass, soil carbon storage, berry production and game production potential. For example, biomass production was approximately 50% greater with five than with one tree species. In addition, we show positive relationships between tree species richness and proxies for other biodiversity components. Importantly, no single tree species was able to promote all services, and some services were negatively correlated to each other. Management of production forests will therefore benefit from considering multiple tree species to sustain the full range of benefits that the society obtains from forests.

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  • 21.
    Gilichinsky, Michael
    et al.
    Department of Forest Resource Management, SLU, Umeå, Sweden.
    Sandström, Per
    Department of Forest Resource Management, SLU, Umeå, Sweden.
    Reese, Heather
    Department of Forest Resource Management, SLU, Umeå, Sweden.
    Kivinen, Sonja
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Nilson, Mats
    Department of Forest Resource Management, SLU, Umeå, Sweden.
    Application of national forest inventory for remote sensing classification of ground lichen in nothern Sweden2010In: ISPRS Archives: Core Spatial Databases - Updating, Maintenance and Services – from Theory to Practice / [ed] Ammatzia Peled, International Society for Photogrammetry and Remote Sensing , 2010, Vol. 38, p. 146-152Conference paper (Refereed)
    Abstract [en]

    Lichen is a major forage resource for reindeer and may constitute up to 80% of a reindeer's winter diet. The reindeer grazing area in Sweden covers almost half of the country, with reindeer using mountainous areas in the summer and forested areas in the winter. Knowledge about the spatial distribution of ground lichens is important for both practical and sustainable decisionmaking purposes. Since the early 1980s, remote sensing research of lichen cover in northern environments has focused on reindeer grazing issues. The objective of the present study was to use lichen information from the Swedish Forest Inventory (NFI) for classification of satellite data into ground lichen classes. The classification procedure was focused on using of NFI plots as training sets for supervised classification of the ground lichen cover in purpose to classify areas with different lichen coverage. The present research has shown the advantage of use forest inventory plot data by assessment of three methods: mahalanobis distance (MD) classification, maximum likelihood (ML) classification and spectral mixture analysis (SMA). The results of this study demonstrate high classification accuracy of SPOT imagery in distinction between lichenabundant and lichen-poor areas by mahalanobis distance classifier (overall accuracy 84.3%, kappa=0.68). The highest classification accuracy for Landsat scene was achieved by maximumlikelihood classification (overall accuracy 76.8%, kappa=0.53). The continuation research on more detailed fragmentation of lichen cover into fractions is proposed.

  • 22. Gilichinsky, Michael
    et al.
    Sandström, Per
    Reese, Heather
    Kivinen, Sonja
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Nilsson, Mats
    Mapping ground lichens using forest inventory and optical satellite data2011In: International Journal of Remote Sensing, ISSN 0143-1161, E-ISSN 1366-5901, Vol. 32, no 2, p. 455-472Article in journal (Refereed)
    Abstract [en]

    Lichen is a major forage resource for reindeer and may constitute up to 80% of areindeer’s winter diet. The reindeer grazing area in Sweden covers almost half of thecountry, with reindeer using mountainous areas in the summer and forested areas inthe winter. Knowledge about the spatial distribution of ground lichens is importantfor both practical and decision-making purposes. Since the early 1980s, remotesensing research of lichen cover in northern environments has focused on reindeergrazing issues. The objective of this study was to use lichen information collected inthe Swedish National Forest Inventory (NFI) as training data to classify opticalsatellite images into ground lichen cover classes. The study site was located within thereindeer husbandry area in northern Sweden and consisted of the common areabetween two contiguous Satellite Pour l’Observation de la Terre (SPOT)-5 scenesand one Landsat-7 Enhanced Thematic Mapper Plus (ETMþ) scene. Three classificationmethods were tested: Mahalanobis distance, maximum likelihood andspectral mixture analysis. Post-classification calibration was applied using a membershipprobability threshold in order to match the NFI-measured proportions oflichen coverage classes. The classification results were assessed using an independentlycollected field dataset (229 validation areas). The results demonstrated highclassification accuracy of SPOT imagery for the classification of lichen-abundantand lichen-poor areas when using theMahalanobis distance classifier (overall accuracy84.3%, kappa ¼ 0.68). The highest classification accuracy for Landsat wasachieved using a maximum likelihood classification (overall accuracy 76.8%, kappa¼ 0.53). These results provided an initial indication of the utility of NFI data astraining data in the process of mapping lichen classes over large areas.

  • 23. Hester, A J
    et al.
    Bergman, M
    Iason, G R
    Moen, J
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Impacts of large herbivores on plant community structure and dynamics2006In: Large Herbivore Ecology, Ecosystem Dynamics and Conservation, Cambridge University Press, Cambridge , 2006Chapter in book (Refereed)
  • 24. Hilding-Rydevik, Tuija
    et al.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Green, Carina
    Baselines and the shifting baseline syndrome: exploring frames of reference in nature conservation2018In: Issues and concepts in historical ecology: the past and future of landscapes and regions / [ed] Carole L. Crumley, Tommy Lennartsson, Anna Westin, Cambridge University Press, 2018, p. 112-141Chapter in book (Refereed)
  • 25.
    Holand, Øystein
    et al.
    Norwegian University of Life Sciences, Norway.
    Horstkotte, Tim
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Kumpula, Jouko
    Natural Resources Institute, Finland.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Reindeer pastoralism in Fennoscandia2022In: Reindeer Husbandry and Global Environmental Change: Pastoralism in Fennoscandia / [ed] Tim Horstkotte, Øystein Holand, Jouko Kumpula, Jon Moen, Routledge, 2022, p. 7-47Chapter in book (Refereed)
    Abstract [en]

    This introductory chapter presents reindeer pastoralism as a social-ecological system and outlines its essential components. Reindeer herders – the pastoralists of the north, the reindeer and the natural environment of Fennoscandia – are briefly introduced. The chapter describes how different historical, natural and social environments lead to different management forms in Finland, Norway and Sweden. Further, it provides a historical overview of reindeer pastoralism deeply embedded in Sámi and local culture and gives some key statistics of the situation today. Finally, it outlines the major challenges that reindeer pastoralism is facing today within the three Fennoscandian countries. This chapter therefore provides the background for the detailed analyses in the main part of this book.

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  • 26.
    Holand, Øystein
    et al.
    Norwegian Institute of Life Sciences, Ås, Norway.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Kumpula, Jouko
    Natural Resources Institute of Finland, Helsinki, Finland.
    Löf, Annette
    Umeå University, Faculty of Arts, Várdduo – Centre for Sámi Research. Swedish University of Agricultural Sciences, SLU, Umeå, Sweden.
    Rasmus, Sirpa
    University of Lapland, Rovaniemi, Finland.
    Røed, Knut
    Norwegian University of Life Sciences, Ås, Norway.
    Project ReiGN: reindeer husbandry in a globalizing North: resilience, adaptations and pathways for actions2020In: ordic perspectives on the responsible development of the Arctic: pathways to action / [ed] Douglas C. Nord, Springer Nature, 2020, , p. 22p. 227-248Chapter in book (Refereed)
    Abstract [en]

    Fennoscandian reindeer husbandry represents ecological, social-economical and institutional gradients reflected in different adaptations and management regimes. This provides for an interdisciplinary comparative research approach, between and within countries. By integrating perspectives from natural and social sciences, ReiGN engages in (1) identifying key drivers, (2) their effects on this pastoral system, and (3) how they are linked to ecological, social and political differences. In this chapter we outline the main challenges confronting this diverse and dynamic social-ecological system within a globalization and climate change perspective. This enables us to evaluate its adaptive capacities as well as its potential to stimulate policy decisions, societal responses and management actions for a viable reindeer husbandry. In this chapter we present reindeer husbandry in a historical context and introduce key concepts of Sámi reindeer husbandry to ease the understanding of our findings presented and discussed. We also offer an overview of the main research areas in which the ReiGN NCoE has conducted its work over the past several years.

  • 27.
    Horstkotte, Tim
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Holand, ØysteinNorwegian University of Life Sciences, Norway.Kumpula, JoukoNatural Resources Institute, Finland.Moen, JonUmeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Reindeer husbandry and global environmental change: pastoralism in Fennoscandia2022Collection (editor) (Refereed)
    Abstract [en]

    This volume offers a holistic understanding of the environmental and societal challenges that affect reindeer husbandry in Fennoscandia today.

    Reindeer husbandry is a livelihood with a long traditional heritage and cultural importance. Like many other pastoral societies, reindeer herders are confronted with significant challenges. Covering Norway, Sweden and Finland – three countries with many differences and similarities – this volume examines how reindeer husbandry is affected by and responds to global environmental change and resource extraction in boreal and arctic social- ecological systems. Beginning with an historical overview of reindeer husbandry, the volume analyses the realities of the present from different perspectives and disciplines. Genetics, behavioural ecology of reindeer, other forms of land use, pastoralists’ norms and knowledge, bio- economy and governance structures all set the stage for the complex internal and externally imposed dynamics within reindeer husbandry. In- depth analyses are devoted to particularly urgent challenges, such as land- use conflicts, climate change and predation, identified as having a high potential to shape the future pathways of the pastoral identity and productivity. These futures, with their risks and opportunities, are explored in the final section, offering a synthesis of the comparative approach between the three countries that runs as a recurring theme through the book. With its richness and depth, this volume contributes significantly to the understanding of the substantial impacts on pastoralist communities in northernmost Europe today, while highlighting viable pathways to maintaining reindeer husbandry for the future.

    This book will be of great interest to students and scholars of both the natural and social sciences who work on natural resource management, global environmental change, pastoralism, ecology, social- ecological systems, rangeland management and Indigenous studies.

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  • 28.
    Horstkotte, Tim
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Kumpula, Jouko
    Natural Resources Institute Finland (Luke), Finland.
    Sandström, Per
    Department of Forest Resource Management, Swedish University of Agricultural Sciences, Sweden.
    Tømmervik, Hans
    Norwegian Institute for Nature Research (NINA), Norway.
    Kivinen, Sonja
    Department of Geographical and Historical Studies, University of Eastern Finland, Finland.
    Skarin, Anna
    Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Sweden.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Sandström, Stefan
    Department of Forest Resource Management, Swedish University of Agricultural Sciences, Sweden.
    Pastures under pressure: Effects of other land users and the environment2022In: Reindeer Husbandry and Global Environmental Change: Pastoralism in Fennoscandia / [ed] Tim Horstkotte, Øystein Holand, Jouko Kumpula, Jon Moen, Routledge, 2022, p. 76-98Chapter in book (Refereed)
    Abstract [en]

    Reindeer husbandry has a long history of sharing landscapes with a multitude of other forms of land use. By competing for space, industrial resource developments from the early 20th century onwards have affected where, when and how the landscape can be used for reindeer grazing. Extending from the local to the landscape level, these impacts can reduce pastures either directly or indirectly as a result of increasing landscape fragmentation or changing reindeer behaviour. Furthermore, environmental drivers influence the dynamics of forage availability or accessibility for reindeer. The observed trend of shrinking pastures in the three countries is caused by these cumulative impacts. As a consequence, grazing pressure on the remaining pastures increases, and it curtails reindeer herders’ options to respond to the challenges of climate change. Reversing the continuing decrease in pastures requires the restoration of grazing resources and increasing landscape connectivity to facilitate movement and grazing rotation. However, socio-political incentives are also required to sustain reindeer pastures in the future. This includes an increase in the influence of reindeer herders on land use decisions and the inclusion of their traditional ecological knowledge of pasture management to identify alternative approaches to natural resource management.

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  • 29.
    Horstkotte, Tim
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Institute of Geography and Geology, Turku University, Finland.
    Lind, Torgny
    Moen, Jon
    Quantifying the Implications of Different Land Users' Priorities in the Management of Boreal Multiple-Use Forests2016In: Environmental Management, ISSN 0364-152X, E-ISSN 1432-1009, Vol. 57, no 4, p. 770-783Article in journal (Refereed)
    Abstract [en]

    In the management of natural resources, conflicting interests and objectives among different stakeholders often need to be considered. Here, we examine how two contrasting management scenarios of boreal forests in northern Sweden differ in their consequences on forest structural composition and the economic gains at harvest. Management strategies prioritize either (i) forest characteristics that promote grazing resources for reindeer herded by the indigenous Sami, or (ii) timber production as practiced in Sweden today. When prioritizing reindeer grazing, forest stands develop a higher abundance of older age classes with larger trees and lower stem density, which reduces harvest and revenue levels by approximately 20 % over a 100-year period. The differences between these strategies illustrate the complexity in finding a trade-off for coexistence between industrial land users and other livelihoods that share the same landscape. Political support and institutional solutions are necessary to initiate changes in policy in finding such trade-offs in the management of environmental resources and thereby influence the optimal distribution of costs and benefits between different actors.

  • 30.
    Horstkotte, Tim
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Successional pathways of terrestrial lichens in changing Swedish boreal forests2019In: Forest Ecology and Management, ISSN 0378-1127, E-ISSN 1872-7042, Vol. 453, article id 117572Article in journal (Refereed)
    Abstract [en]

    The current decline of terrestrial lichens in Swedish boreal forests is a major challenge for reindeer husbandry, as lichens constitute essential grazing resources for reindeer during winter. Using a 30-year data set covering northern Sweden, we explore how the successional dynamics of lichen cover depend on several forest characteristics, as well as management strategies regarding both reindeer and forestry. We found a 36% reduction of plots with lichen cover, with a decrease in lichen cover becoming more likely in recent years. Year-round presence of reindeer in forests, compared to winter grazing only, had slightly negative impacts on lichens. We found increases in lichen cover in young forests following final harvest. However, increasing basal areas as forest grow older affected lichens negatively and supported dominance of mosses. Forest management that prioritizes less dense forests with larger trees would therefore improve the ability of lichens to persist as forage resource for reindeer.

  • 31.
    Horstkotte, Tim
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. University of Turku, Turku, Finland.
    Sandström, Camilla
    Umeå University, Faculty of Social Sciences, Department of Political Science.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Exploring the multiple use of boreal landscapes: the importance of social-ecological diversity for mobility and flexibility2014In: Human Ecology, ISSN 0300-7839, E-ISSN 1572-9915, Vol. 42, no 5, p. 671-682Article in journal (Refereed)
    Abstract [en]

    Sustainable multiple use of landscapes can be a challenging task for the stakeholders involved, especially when they have competing interests with respect to natural resource management. In this paper we analyze the consequences associated with “landscape diversity”, including the interactions between environmental, administrative and societal factors. As a case study, we describe winter land use for reindeer husbandry in the boreal forest in Northern Sweden, a resource that is also used for commercial timber production. We show how and why the interactions between the three factors associated with landscape diversity affect reindeer herding and the options for responding to change. Multi-dimensional landscape diversity can either (i) promote flexibility in the face of change in the form of mobility or (ii) create fragmentation that restricts adaption to changes. This is a result of the dynamic patterns of diverse landscape structures, created by administrative and societal choices. Because such landscape patterns react differently to environmental variability within a season and between years, landscape functions adjusted to the dynamics of environmental variables could help to provide continuity of grazing resources in both space and time and ensure that reindeer husbandry remains resilient to changes. Because of the unequal distribution of power and capacity for decision making, social learning between the two stakeholders can help to balance trade-offs between both types of land user, allowing them to coexist in a landscape shaped by diverse values, priorities and management practices.

  • 32.
    Jansson, Roland
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Nilsson, Christer
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Keskitalo, E Carina H
    Umeå University, Faculty of Social Sciences, Department of Geography and Economic History.
    Vlasova, Tatiana
    Sutinen, Marja-Liisa
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Chapin, F Stuart, III
    Bråthen, Kari Anne
    Cabeza, Mar
    Callaghan, Terry V
    van Oort, Bob
    Dannevig, Halvor
    Bay-larsen, Ingrid A
    Ims, Rolf A
    Aspholm, Paul Eric
    Future changes in the supply of goods and services from natural ecosystems: prospects for the European north2015In: Ecology and Society, E-ISSN 1708-3087, Vol. 20, no 3, article id 32Article in journal (Refereed)
    Abstract [en]

    Humans depend on services provided by ecosystems, and how services are affected by climate change is increasingly studied. Few studies, however, address changes likely to affect services from seminatural ecosystems. We analyzed ecosystem goods and services in natural and seminatural systems, specifically how they are expected to change as a result of projected climate change during the 21st century. We selected terrestrial and freshwater systems in northernmost Europe, where climate is anticipated to change more than the global average, and identified likely changes in ecosystem services and their societal consequences. We did this by assembling experts from ecology, social science, and cultural geography in workshops, and we also performed a literature review. Results show that most ecosystem services are affected by multiple factors, often acting in opposite directions. Out of 14 services considered, 8 are expected to increase or remain relatively unchanged in supply, and 6 are expected to decrease. Although we do not predict collapse or disappearance of any of the investigated services, the effects of climate change in conjunction with potential economical and societal changes may exceed the adaptive capacity of societies. This may result in societal reorganization and changes in ways that ecosystems are used. Significant uncertainties and knowledge gaps in the forecast make specific conclusions about societal responses to safeguard human well-being questionable. Adapting to changes in ecosystem services will therefore require consideration of uncertainties and complexities in both social and ecological responses. The scenarios presented here provide a framework for future studies exploring such issues.

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  • 33.
    Johansson Jänkänpää, Hanna
    et al.
    Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Frenkel, Martin
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Zulfugarov, Ismayil
    Institute of Botany, Azerbaijan National Academy of Sciences, Baku, Azerbaijan.
    Reichelt, Michael
    Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany.
    Krieger-Liszkay, Anja
    CEA, Institut de Biologie et Technologies de Saclay, Service de Bioénergétique Biologie Structurale et Mécanisme, Gif-sur-Yvette, France.
    Mishra, Yogesh
    Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Gershenzon, Jonathan
    Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Lee, Choon-Hwan
    Department of Molecular Biology, Pusan National University, Busan, Republic of Korea.
    Jansson, Stefan
    Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Non-photochemical quenching capacity in arabidopsis thaliana affects herbivore behaviour2013In: PLOS ONE, E-ISSN 1932-6203, Vol. 8, no 1, p. e53232-Article in journal (Refereed)
    Abstract [en]

    Under natural conditions, plants have to cope with numerous stresses, including light-stress and herbivory. This raises intriguing questions regarding possible trade-offs between stress defences and growth. As part of a program designed to address these questions we have compared herbivory defences and damage in wild type Arabidopsis thaliana and two "photoprotection genotypes", npq4 and oePsbS, which respectively lack and overexpress PsbS (a protein that plays a key role in qE-type non-photochemical quenching). In dual-choice feeding experiments both a specialist (Plutella xylostella) and a generalist (Spodoptera littoralis) insect herbivore preferred plants that expressed PsbS most strongly. In contrast, although both herbivores survived equally well on each of the genotypes, for oviposition female P. xylostella adults preferred plants that expressed PsbS least strongly. However, there were no significant differences between the genotypes in levels of the 10 most prominent glucosinolates; key substances in the Arabidopsis anti-herbivore chemical defence arsenal. After transfer from a growth chamber to the field we detected significant differences in the genotypes' metabolomic profiles at all tested time points, using GC-MS, but no consistent "metabolic signature'' for the lack of PsbS. These findings suggest that the observed differences in herbivore preferences were due to differences in the primary metabolism of the plants rather than their contents of typical "defence compounds". A potentially significant factor is that superoxide accumulated most rapidly and to the highest levels under high light conditions in npq4 mutants. This could trigger changes in planta that are sensed by herbivores either directly or indirectly, following its dismutation to H2O2.

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  • 34. Jones, Elizabeth A.
    et al.
    Westin, Anna
    Madry, Scott
    Murray, Seth
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Tickner, Amanda
    How to operationalise collaborative research2018In: Issues and concepts in historical ecology: the past and future of landscapes and regions / [ed] Carole L. Crumley, Tommy Lennartsson, Anna Westin, Cambridge University Press, 2018, p. 240-271Chapter in book (Refereed)
  • 35. Jonsdottir, I S
    et al.
    Moen, J
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Botany in the West Antarctic region: from Skottsberg to modern research2004In: Antarctic Challenges – historical and current perspectives on Otto Nordenskjöld’s Antarctic expedition 1910-1903, 2004, p. 156-174Chapter in book (Other academic)
  • 36.
    Jonsson, Anna
    et al.
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Palmqvist, Kristin
    Umeå University, Faculty of Science and Technology, Ecology and Environmental Science.
    Predicting lichen hydration using biophysical models.2008In: Oecologia, ISSN 0029-8549, E-ISSN 1432-1939, Vol. 156, no 2, p. 259-73Article in journal (Refereed)
    Abstract [en]

    Two models for predicting the hydration status of lichens were developed as a first step towards a mechanistic lichen productivity model. A biophysical model included the water potential of the air, derived from measurements of air temperature, relative humidity and species-specific rate constants for desiccation and rehydration. A reduced physical model, included only the environmental parameters, assuming instantaneous equilibration between the lichen and the air. These models were developed using field and laboratory data for three green algal lichens; the foliose epiphytic Platismatia glauca (L.) W. Culb., the fruticose epiphytic Alectoria sarmentosa (Ach.) Ach., and the fruticose, terricolous and mat-forming Cladina rangiferina (L.) Weber ex Wigg. The models were compared and validated for the same three species using data from a habitat with a different microclimate. Both models predicted length and timing of lichen hydration periods with high accuracy for A. sarmentosa and P. glauca where near 100 percent of the total wet time was predicted by the biophysical and the physical model. Moreover, the models predicted an accurate timing of the total realized wet time for A. sarmentosa and P. glauca when the lichens were wet. The model accuracy was lower for C. rangiferina compared to the epiphytes, both for the total realized wet time and timing accuracy. The results demonstrate that the stochastic and continually varying hydration status of lichens can be simulated from biophysical data. Further development of these models to include also water related activity, light, and temperature conditions during the hydration events, will then be a potent tool to assess potential lichen productivity in landscapes and habitats of various microclimatic conditions.

  • 37.
    Jonsson Cabrajic, Anna V
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Palmqvist, Kristin
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Predicting growth of mat-forming lichens on a landscape scale: comparing models with different complexities2010In: Ecography, ISSN 0906-7590, E-ISSN 1600-0587, Vol. 33, no 5, p. 949-960Article in journal (Refereed)
    Abstract [en]

    During the 20th century, forestry practices has adversely affected lichen-rich habitats. Mat-forming lichens are important components of the vegetation of boreal and arctic ecosystems and are the main reindeer forage during the winter. To support the long-term management of lichens in such habitats we developed models for predicting the growth of two common species. The lichens were transplanted across northern Scandinavia along a west-east gradient varying in precipitation, temperature and irradiance. Growth was recorded seasonally over 16 months and ranged from −4.8 to 34.6% and −12.7 to 34.7% dry weight change for Cetraria stellaris and Cladina islandica, respectively. Growth was light limited below canopies with more than ca 60% cover and highest at the more humid sites when light levels were optimal. The models were based on various meteorological parameters, irradiance, physiological data and lichen hydration status; the latter was derived from a recently developed lichen hydration model. Our models' abilities to predict growth, both annually and seasonally (i.e. in summer), were evaluated in relation to their complexity and their potential usefulness from a management perspective. One parameter related to irradiance (the logarithm of site openness) was valuable in the prediction of annual growth for both species and could, in combination with precipitation, explain 52% of the variation in annual growth for C. stellaris and, in combination with total wet time and the irradiance received while wet, explain 66% of the variation in annual growth for C. islandica. The best simplified model explained 43% of the variation in annual growth for C. stellaris, using stem basal area and the annual normal temperature, and 24% for C. islandica using basal area alone. It is concluded that ensuring sufficient irradiance below the forest canopy is of crucial importance in the long-term management of mat-forming lichens and that simplified models can be used to identify appropriate habitats.

  • 38.
    Jonsson, Micael
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Bengtsson, Jan
    Gamfeldt, Lars
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Snäll, Tord
    Levels of forest ecosystem services depend on specific mixtures of commercial tree species2019In: Nature Plants, ISSN 2055-026X, Vol. 5, no 2, p. 141-147Article in journal (Refereed)
    Abstract [en]

    Global and local ecosystem change resulting in diversity loss has motivated efforts to understand relationships between species diversity and ecosystem services. However, it is unclear how such a general understanding can inform policies for the management of ecosystem services in production systems, because these systems are primarily used for food or fibre, and are rarely managed for the conservation of species diversity. Here, using data from a nationwide forest inventory covering an area of 230,000 km2, we show that relative abundances of commercial tree species in mixed stands strongly influence the potential to provide ecosystem services. The mixes provided higher levels of ecosystem services compared to respective plant monocultures (overyielding or transgressive overyielding) in 35% of the investigated cases, and lower (underyielding) in 9% of the cases. We further show that relative abundances, not just species richness per se, of specific tree-species mixtures affect the potential of forests to provide multiple ecosystem services, which is crucial information for policy and sustainable forest management.

  • 39.
    Jonsson, Micael
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Bengtsson, Jan
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Gamfeldt, Lars
    Snäll, Tord
    Stand age and climate influence forest ecosystem service delivery and multifunctionality2020In: Environmental Research Letters, E-ISSN 1748-9326, Vol. 15, no 9, article id 0940a8Article in journal (Refereed)
    Abstract [en]

    We examine how levels of multiple ecosystem services (ESs) change with succession in forests with different tree species composition. More specifically we ask how ecosystem age interacts with environmental conditions to regulate ES delivery. Using the nationwide Swedish forest inventory, comprising boreal and temperate regions, we investigated how levels of six provisioning, regulating, recreational, and/or cultural forest ESs changed with forest age (10-185 years) in stands of different tree species composition. We also tested whether the number of ESs delivered (i.e. multifunctionality) changed substantially with stand age, using different threshold levels for ES delivery. Accounting for environmental conditions and stand properties, we found that levels of single ESs changed with stand age. Tree biomass production usually peaked in young to medium aged stands. In contrast, production of berries and game, and services related to biodiversity, were typically highest in old stands (120-185 years). Consistent with this strong temporal tradeoff, multifunctionality at lower threshold levels increased with stand age in most monocultures and mixtures, with the highest multifunctionality being reached somewhere between 100 and 185 years, depending on tree species composition. This was not evident for the highest threshold ES level (the top-20%), however. Moreover, multifunctionality usually decreased with warmer climatic conditions, with the exception of spruce-pine-birch mixtures. Taken together, our results show that a reduced forest age, e.g. due to forestry targeting early harvest of stands, most likely would limit the delivery of several ESs valued by society and result in less multifunctional forests. To maintain the capacity of forests to deliver high levels of multiple ESs, the role of stand age and tree species composition should be considered in decisions on how to manage future forests.

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  • 40.
    Kivinen, Sonja
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Berg, Anna
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Östlund, Lars
    Olofsson, Johan
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Forest Fragmentation and Landscape Transformation in a Reindeer Husbandry Area in Sweden2012In: Environmental Management, ISSN 0364-152X, E-ISSN 1432-1009, Vol. 49, no 2, p. 295-304Article in journal (Refereed)
    Abstract [en]

    Reindeer husbandry and forestry are two main land users in boreal forests in northern Sweden. Modern forestry has numerous negative effects on the ground-growing and arboreal lichens that are crucial winter resources for reindeer husbandry. Using digitized historical maps, we examined changes in the forest landscape structure during the past 100 years, and estimated corresponding changes in suitability of forest landscape mosaics for the reindeer winter grazing. Cover of old coniferous forests, a key habitat type of reindeer herding system, showed a strong decrease during the study period, whereas clear-cutting and young forests increased rapidly in the latter half of the 20th century. The dominance of young forests and fragmentation of old-growth forests (decreased patch sizes and increased isolation) reflect decreased amount of arboreal lichens as well as a lowered ability of the landscape to sustain long-term persistence of lichens. The results further showed that variation in ground lichen cover among sites was mainly related to soil moisture conditions, recent disturbances, such as soil scarification and prescribed burning, and possibly also to forest history. In general, the results suggest that the composition and configuration of the forest landscape mosaic has become less suitable for sustainable reindeer husbandry.

  • 41.
    Kivinen, Sonja
    et al.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Moen, Jon
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
    Berg, Anna
    Eriksson, Åsa
    Effects of modern forest management on winter grazing resources for reindeer in Sweden2010In: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 39, no 4, p. 269-278Article in journal (Refereed)
    Abstract [en]

    Boreal forests in Sweden are exploited in a number of ways, including forestry and reindeer husbandry. In the winter, reindeer feed mainly on lichens, and lichen-rich forests are a key resource in the herding system. Commercial forestry has mainly negative effects on reindeer husbandry, and conflicts between these two industries have escalated over the last century. This article reviews the effects of modern forest management practices on the winter resources available for reindeer husbandry. Forestry affects reindeer husbandry at both the stand level and the landscape level and over various time scales. Clear-cutting, site preparation, fertilization, short rotation times, and forest fragmentation have largely resulted in a reduced amount of ground growing and arboreal lichens and restricted access to resource. This article also discusses alternative forestry practices and approaches that could reduce the impacts of forestry on reindeer husbandry, both in the short and long term.