umu.sePublications
Change search
Link to record
Permanent link

Direct link
BETA
Holm, Stig-Olof
Alternative names
Publications (5 of 5) Show all publications
Holm, S.-O. (2015). A Management Strategy for Multiple Ecosystem Services in Boreal Forests. Journal of Sustainable Forestry, 34(4), 358-379
Open this publication in new window or tab >>A Management Strategy for Multiple Ecosystem Services in Boreal Forests
2015 (English)In: Journal of Sustainable Forestry, ISSN 1054-9811, E-ISSN 1540-756X, Vol. 34, no 4, p. 358-379Article in journal (Refereed) Published
Abstract [en]

A change of the forestry management approach where semi-natural forests are re-created after logging instead of tree plantations will contribute to a sustainable forestry. Such a change will increase resilience to damages on trees, thus contributing to a more reliable supply of wood, improve reindeer husbandry, and reduce climate-driving gases. Furthermore, re-creation of semi-natural forests will better secure biodiversity. Since adequate protection of many threatened forest species, however, is not compatible with even moderate logging, a functional conservation model also has to include total saving of parts of the forest landscape.

Keywords
forestry, biodiversity, climate change, ecological services, forest economy
National Category
Forest Science
Identifiers
urn:nbn:se:umu:diva-120324 (URN)10.1080/10549811.2015.1009633 (DOI)000373570000003 ()
Available from: 2016-05-16 Created: 2016-05-16 Last updated: 2018-06-07Bibliographically approved
Holm, S.-O. & Englund, G. (2009). Increased ecoefficiency and gross rebound effect: Evidence from USA and six European countries 1960-2002. Ecological Economics, 68(3), 879-887
Open this publication in new window or tab >>Increased ecoefficiency and gross rebound effect: Evidence from USA and six European countries 1960-2002
2009 (English)In: Ecological Economics, ISSN 0921-8009, E-ISSN 1873-6106, Vol. 68, no 3, p. 879-887Article in journal (Refereed) Published
Abstract [en]

Despite increased efficiency in the use of natural resources, the use of these resources continues to increase in most societies. This paper examines the discrepancy between the potential decrease of use of natural resources, as an effect of increased efficiency, and actual use. During the period 1960–2002, this difference was found to grow faster in the USA than the mean for six West European countries. Possible reasons for this difference between the two regions are analysed. To reduce the anthropogenic flows of energy and material, and the consequent deleterious effects on the biosphere, it will become necessary to adapt consumption to degree of efficiency in the use of natural resources. Based on the comparison between the two regions, some economic aspects of this issue are discussed.

National Category
Ecology
Identifiers
urn:nbn:se:umu:diva-23298 (URN)10.1016/j.ecolecon.2008.07.006 (DOI)
Available from: 2009-06-09 Created: 2009-06-09 Last updated: 2018-06-08Bibliographically approved
Holm, S.-O. (2003). Den globala miljökrisen.. In: Öckerman, A., Friman E. (Ed.), Hela världen.: Samhälleliga och kulturella perspektiv på miljökrisen.. Studentlitteratur AB
Open this publication in new window or tab >>Den globala miljökrisen.
2003 (Swedish)In: Hela världen.: Samhälleliga och kulturella perspektiv på miljökrisen. / [ed] Öckerman, A., Friman E., Studentlitteratur AB, 2003Chapter in book (Other (popular science, discussion, etc.))
Place, publisher, year, edition, pages
Studentlitteratur AB, 2003
Identifiers
urn:nbn:se:umu:diva-144282 (URN)91-44-02697-8 (ISBN)
Available from: 2018-01-30 Created: 2018-01-30 Last updated: 2018-06-09
Stjernström, O., Myrlund, H., Holm, S.-O., Håkansson, J., Lindgren, U., Stage, J., . . . Wiberg, U. (2001). Den hållbara regionen: Om förutsättningar och framtidsmöjligheter för en hållbar samhällsutveckling i Västerbottens län - ett projektförslag.
Open this publication in new window or tab >>Den hållbara regionen: Om förutsättningar och framtidsmöjligheter för en hållbar samhällsutveckling i Västerbottens län - ett projektförslag
Show others...
2001 (Swedish)Report (Other academic)
Publisher
p. 51
Series
CERUM Working Paper, ISSN 1404-5362 ; 32
Keywords
Hållbar region, Västerbotten, energibalans, emissionseffekter, beslutsstöd, gröna räkenskaper
Identifiers
urn:nbn:se:umu:diva-24743 (URN)881251 (Local ID)881251 (Archive number)881251 (OAI)
Distributor:
Centrum för regionalvetenskap (CERUM), 90187, Umeå
Note
På uppdrag av Miljöhögskolan vid Umeå universitet har Centrum för regionalvetenskap (CERUM) utfört en inledande sondering och en preliminär förstudie där syftet har varit att lägga grunden för ett tvärvetenskapligt forskningsprojekt baserat på en vid definition av begreppet ”hållbar utveckling”. Projektets vetenskapliga bas är lagd med huvudvikt på samhällsvetenskapliga och humanistiska analysdimensioner, vilket inte utesluter de, i dessa sammanhang mer vanligen förekommande, naturvetenskapliga och teknologiska analys-dimensioner. Som en väsentlig del av denna förstudie ingår att samla/skapa en forskargrupp bestående av forskare från olika discipliner företrädesvis från Umeå universitet, samt att formulera en plan över en fördjupningsstudie. Koordinator för projektet är för närvarande Olof Stjernström, CERUM och Kulturgeografiska institutionen, Umeå universitet. Available from: 2009-07-13 Created: 2009-07-13 Last updated: 2019-02-15Bibliographically approved
Holm, S.-O. (1994). Reproductive patterns of birches (Betula spp.) in northern Sweden. (Doctoral dissertation). Umeå: Umeå universitet
Open this publication in new window or tab >>Reproductive patterns of birches (Betula spp.) in northern Sweden
1994 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The aim of this thesis was to study patterns of reproduction of Betula pendula and B. pubescens coll. along an altitudinal, coastal-inland, gradient in northern Sweden. The altitudinal variation was related to the distribution of the birch taxa along the gradient.

Six years field data showed a steep decrease of seed germinability of B. pendula towards its altitudinal range limit in the Scandes every year. In contrast, B. pubescens ssp. pubescens showed significant positive correlations between seed germinability and altitude in three of the six years. Furthermore, there was a highly significant positive correlation between seed weight and altitude for B. pubescens coll., but not for B. pendula. Production of viable seeds fluctuated strongly between years in most populations, except in marginal B. pendula populations in the mountain area where it was constantly very low. On average 15 - 41 % of the seeds produced in B. pendula populations above 400 m altitude were attacked by gall midges (Semudobia ssp.). Corresponding values for B. pendula populations below 400 m altitude were 4 - 7 %. In B. pubescens populations, the seeds attacked by Semudobia ssp. never exceeded 3 %. The high frequency of Semudobia attackes in high altitude marginal B. pendula populations was suggested to be due to limited resources for defense against the seed predator.

A 3-yr study documented large variations in pollination and seed quality between taxa, high and low altitude populations, and between years. Empty seeds (without embryos) dominated among the sampled seeds in most cases. This proportion was decreased by pollen addition, in both B. pendula and B. pubescens, in mountain populations, but not in coastal populations. The high percentage of empty seeds was therefore suggested to be partly caused by pollen-limitation, but failure of pollen tube penetration - fertilisation, or maternal resource supply could also have had an influence.

A laboratory experiment showed increased pollen germination and length of the longest pollen tube per style after increased pollination. The correlations between number and length of pollen tubes per style were however mostly low in natural populations, suggesting low probability of pollen competition in the natural situation.

Sowing experiments indicated that differences in initial seedling density between B. pendula and B. pubescens was more affected by interspecific differences in seed quality than by interspecific differences in survival of seedlings after establishment A study of the age structure of a B. pendula stand, planted about 250 m above its natural altitudinal limit, indicated that this birch may reproduce above its recent range limit during temporally warmer periods.

It was concluded that the level of accumulated resources in B. pendula in marginal sites in the Scandes would mostly be too low for completion of the reproductive cycle. In contrast, B. pubescens ssp. pubescens is able to accumulate enough rescources for reproduction also at relative high altitudes.

Place, publisher, year, edition, pages
Umeå: Umeå universitet, 1994. p. 14
Keywords
Reproduction, Betula, seed-quality, seed-set, pollination, pollen-limitation, pollen-competition, tree-line, environmental gradient, seed weight, seedling survival, Semudobia
National Category
Botany
Identifiers
urn:nbn:se:umu:diva-96884 (URN)91-7174-854-7 (ISBN)
Public defence
1994-01-28, Hörsal C, Naturvetarhuset, Umeå universitet, Umeå, 10:00
Projects
digitalisering@umu
Note

Diss. (sammanfattning) Umeå : Umeå universitet, 1994, härtill 5 uppsatser.

Available from: 2015-02-12 Created: 2014-12-05 Last updated: 2018-06-07Bibliographically approved
Organisations

Search in DiVA

Show all publications