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Huseby, Siv
Publications (10 of 13) Show all publications
Huseby, S. (2017). Naturtypsbestämning av utsjöstationer i Bottniska viken. Göteborg: Havs- och vattenmyndigheten
Open this publication in new window or tab >>Naturtypsbestämning av utsjöstationer i Bottniska viken
2017 (Swedish)Report (Other academic)
Abstract [sv]

Fyra utsjöstationer, som ingår i den nationella miljöövervakningen i Bottniskaviken, har i denna undersökning naturtypsbestämts enligt art- ochhabitatdirektivets naturtyper och EUNIS/HUB. Stationerna provtogs med VanVeen huggare och den taxonomiska analysen utfördes på lab. För utsjö finns tremöjliga Natura 2000-naturtyper: 1110 sandbankar, 1170 rev och 1180bubbelstrukturer. Ingen av de fyra stationerna passade beskrivningen av någraav dessa tre möjligheter och klassades därmed inte som naturtyp enligthabitatdirektivet. Alla stationer hade lerigt sediment (>90%) med inslag av litesand, silt eller noduler. Vid alla stationer dominerade amphipod-arternaMonoporeia affinis och/eller Pontoporeia femorata och stationerna bedömdessom ABH3N1 baltisk afotisk lerigt sediment dominerad av Monoporeia affinisoch/ eller Pontoporeia femorata.

Abstract [en]

Four offshore monitoring stations in the Gulf of Bothnia were in this studyclassified according to the Habitat Directive and EUNIS/ HUB. The stationswere sampled with Van Veen grab and later taxonomically analyzed in thelaboratory. For offshore stations there are three possible Natura2000 types:1110 sandbanks, 1170 reefs and 1180 submarine structures made by leakinggases. None of the stations could fit the descriptions of any of these Natura2000 habitat types. The sediment at all four stations was mostly clay (>90%)with elements of sand and silt and ferromanganese concretions. At all stationsthe amphipod species Monoporeia affinis and/or Pontoporeia femoratadominated the biomass. The EUNIS/HELCOM HUB classification for allstations was ABH3N1 Baltic aphotic muddy sediment dominated byMonoporeia affinis and/or Pontoporeia femorata.

Place, publisher, year, edition, pages
Göteborg: Havs- och vattenmyndigheten, 2017. p. 18
Series
Havs- och vattenmyndighetens rapport ; 2017:17
Keywords
miljöövervakning, naturtypsbestämning, Natura2000, EUNIS/HUB, Bottniska viken
National Category
Ecology
Research subject
biology, Environmental Science
Identifiers
urn:nbn:se:umu:diva-143704 (URN)978-91-87967-65-8 (ISBN)
Available from: 2018-01-08 Created: 2018-01-08 Last updated: 2018-06-09
Huseby, S. (2016). Pelagial biologi/bakterieplankton. In: Havet: om miljötillståndet i svenska havsområden. 2015/2016 (pp. 62-62). Naturvårdsverket, Havsmiljöinstitutet och Havs- och vattenmyndigheten
Open this publication in new window or tab >>Pelagial biologi/bakterieplankton
2016 (Swedish)In: Havet: om miljötillståndet i svenska havsområden. 2015/2016, Naturvårdsverket, Havsmiljöinstitutet och Havs- och vattenmyndigheten , 2016, p. 62-62Chapter in book (Other academic)
Place, publisher, year, edition, pages
Naturvårdsverket, Havsmiljöinstitutet och Havs- och vattenmyndigheten, 2016
Series
Havet, ISSN 1654-6741 ; 2015/2016
Keywords
miljö, Bottniska viken, bakterieplankton
National Category
Ecology Environmental Sciences Oceanography, Hydrology and Water Resources
Research subject
biology, Environmental Science
Identifiers
urn:nbn:se:umu:diva-143801 (URN)978-91-982291-3-4 (ISBN)978-91-87967-12-2 (ISBN)
Projects
svensk miljöövervakning
Available from: 2018-01-10 Created: 2018-01-10 Last updated: 2018-06-09Bibliographically approved
Höglander, H., Skjevik, A.-T., Karlsson, C. & Huseby, S. (2016). Pelagial biologi/växtplankton. In: Havet: om miljötillståndet i svenska havsområden. 2015/2016 (pp. 56-59). Naturvårdsverket; Havsmiljöinstitutet; Havs- och vattenmyndigheten
Open this publication in new window or tab >>Pelagial biologi/växtplankton
2016 (Swedish)In: Havet: om miljötillståndet i svenska havsområden. 2015/2016, Naturvårdsverket; Havsmiljöinstitutet; Havs- och vattenmyndigheten , 2016, p. 56-59Chapter in book (Other academic)
Place, publisher, year, edition, pages
Naturvårdsverket; Havsmiljöinstitutet; Havs- och vattenmyndigheten, 2016
Series
Havet, ISSN 1654-6741 ; 2015/2016
Keywords
växtplankton, miljötillstånd, marin, Bottniska viken, Östersjön
National Category
Ecology Environmental Sciences Oceanography, Hydrology and Water Resources
Research subject
environmental science
Identifiers
urn:nbn:se:umu:diva-144058 (URN)978-91-982291-3-4 (ISBN)978-91-87967-12-2 (ISBN)
Projects
svensk miljöövervakning
Available from: 2018-01-19 Created: 2018-01-19 Last updated: 2019-06-13Bibliographically approved
Andersson, A., Höglander, H., Karlsson, C. & Huseby, S. (2015). Key role of phosphorus and nitrogen in regulating cyanobacterial community composition in the northern Baltic Sea. Estuarine, Coastal and Shelf Science, 164, 161-171
Open this publication in new window or tab >>Key role of phosphorus and nitrogen in regulating cyanobacterial community composition in the northern Baltic Sea
2015 (English)In: Estuarine, Coastal and Shelf Science, ISSN 0272-7714, E-ISSN 1096-0015, Vol. 164, p. 161-171Article in journal (Refereed) Published
Abstract [en]

Despite cyanobacteria being a key phytoplankton group in the Baltic Sea, the factors governing their community structure are still poorly understood. Here, we studied the occurrence of the orders Chroococcales, Oscillatoriales and Nostocales, and potentially explanatory variables at five locations in the northern Baltic Sea from June–September, 1998–2012. Cyanobacteria constituted 1–36% of the total phytoplankton biomass along the north–south gradient. In the Bothnian Bay, Chroococcales and Oscillatoriales dominated the cyanobacterial community, whereas in the Bothnian Sea and northern Baltic Proper, Nostocales was the dominant group. The dominance of Chroococcales was coupled to low salinity and low total phosphorus, whereas Oscillatoriales correlated with high total nitrogen and low salinity. Nostocales correlated to high total phosphorus, inorganic phosphorus and salinity. Chroococcales showed an increase over time in the offshore Bothnian Bay, whereas Nostocales increased in the coastal Bothnian Sea and coastal Baltic Proper. The increase of Nostocales in the coastal Bothnian Sea was explained by a rise in total phosphorus and decrease in dissolved inorganic nitrogen compared to an increase of total nitrogen and phosphorus in the coastal Baltic Proper. No significant trends were observed in the cyanobacterial community in the offshore Bothnian Sea and the offshore northern Baltic Proper. We concluded that Chroococcales may be a useful indicator for increased phosphorus levels in waters with low phosphorus concentrations, whereas Nostocales could be used as a quality indicator for increasing phosphorus concentrations in waters with low inorganic N/P ratios (<20), such as in the coastal Bothnian Sea and Baltic Proper.

Place, publisher, year, edition, pages
Academic Press, 2015
Keywords
Cyanobacteria, Baltic Sea, Chroococcales, Oscillatoriales, Nostocales, Indicators
National Category
Ecology
Identifiers
urn:nbn:se:umu:diva-112690 (URN)10.1016/j.ecss.2015.07.013 (DOI)000367862400018 ()
Available from: 2015-12-14 Created: 2015-12-14 Last updated: 2018-06-07Bibliographically approved
Eilertsen, H. C., Huseby, S., Degerlund, M., Eriksen, G. K., Ingebrigtsen, R. A. & Hansen, E. (2014). The effect of freeze/thaw cycles on reproducibility of metabolic profiling of marine microalgal extracts using direct infusion high-resolution mass spectrometry (HR-MS). Molecules, 19(10), 16373-80
Open this publication in new window or tab >>The effect of freeze/thaw cycles on reproducibility of metabolic profiling of marine microalgal extracts using direct infusion high-resolution mass spectrometry (HR-MS)
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2014 (English)In: Molecules, Vol. 19, no 10, p. 16373-80Article in journal (Refereed) Published
Abstract [en]

During normal sample preparation, storage in freezers and subsequent freeze/thaw cycles are commonly introduced. The effect of freeze/thaw cycles on the metabolic profiling of microalgal extracts using HR-MS was investigated. Methanolic extracts of monocultures of Arctic marine diatoms were analyzed immediately after extraction, after seven days of storage at -78 degrees C (one freeze/thaw cycle), and after additional seven days at -20 degrees C (two freeze/thaw cycles). Repeated direct infusion high-resolution mass spectrometry analysis of microalgae extracts of the same sample showed that reproducibility was ca. 90% when a fresh (unfrozen) sample was analyzed. The overall reproducibility decreased further by ca. 10% after the first freeze/thaw-cycle, and after one more freeze/thaw cycle the reproducibility decreased further by ca. 7%. The decrease in reproducibility after freeze-thaw cycles could be attributed to sample degradation and not to instrument variability.

Keywords
metabolic profiling, metabolomics, microalgae
National Category
Other Biological Topics
Identifiers
urn:nbn:se:umu:diva-112692 (URN)1420-3049 (Electronic) 1420-3049 (Linking) (ISBN)
Note

Eilertsen, Hans Chr Huseby, Siv Degerlund, Maria Eriksen, Gunilla K Ingebrigtsen, Richard A Hansen, Espen eng Research Support, Non-U.S. Gov't Switzerland 2014/10/15 06:00 Molecules. 2014 Oct 13;19(10):16373-80. doi: 10.3390/molecules191016373.

Available from: 2015-12-14 Created: 2015-12-14 Last updated: 2018-06-07
Huseby, S., Degerlund, M., Eriksen, G. K., Ingebrigtsen, R. A., Eilertsen, H. C. & Hansen, E. (2013). Chemical Diversity as a Function of Temperature in Six Northern Diatom Species. Marine Drugs, 11(11), 4232-4245
Open this publication in new window or tab >>Chemical Diversity as a Function of Temperature in Six Northern Diatom Species
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2013 (English)In: Marine Drugs, ISSN 1660-3397, E-ISSN 1660-3397, Vol. 11, no 11, p. 4232-4245Article in journal (Refereed) Published
Abstract [en]

In this study, we investigate how metabolic fingerprints are related to temperature. Six common northern temperate diatoms (Attheya longicornis, Chaetoceros socialis, Chaetoceros furcellatus, Porosira glacialis, Skeletonema marinoi, and Thalassiosira gravida) were cultivated at two different temperatures, 0.5 and 8.5 °C. To exclude metabolic variations due to differences in growth rates, the growth rates were kept similar by performing the experiments under light limited conditions but in exponential growth phase. Growth rates and maximum quantum yield of photosynthesis were measured and interpreted as physiological variables, and metabolic fingerprints were acquired by high-resolution mass spectrometry. The chemical diversity varied substantially between the two temperatures for the tested species, ranging from 31% similarity for C. furcellatus and P. glacialis to 81% similarity for A. longicornis. The chemical diversity was generally highest at the lowest temperature.

Place, publisher, year, edition, pages
MDPI, 2013
Keywords
diatoms, physiology, metabolic fingerprinting, temperature
National Category
Biological Systematics
Identifiers
urn:nbn:se:umu:diva-112693 (URN)10.3390/md11114232 (DOI)000330521400007 ()24177671 (PubMedID)2-s2.0-84889251433 (Scopus ID)
Available from: 2015-12-14 Created: 2015-12-14 Last updated: 2018-08-15Bibliographically approved
Andersson, A., Karlsson, C., Huseby, S. & Höglander, H. (2013). Mer fosfor ger mer cyanobakterier i norra Östersjön. Havet, 51-54
Open this publication in new window or tab >>Mer fosfor ger mer cyanobakterier i norra Östersjön
2013 (Swedish)In: Havet, p. 51-54Article, review/survey (Other academic) Published
Abstract [sv]

I flera områden i norra Östersjön har cyanobakterierna ökat under de senaste tio till femton åren. I Bottenhavets och Egentliga Östersjöns kustområden ökar de kvävefixerande cyanobakterierna. I Bottenvikens utsjö är det den småcelliga och kolonibildande gruppen Chroococcales som blir fler. Förändringarna beror i flera fall på ökande halter av fosfor.

Place, publisher, year, edition, pages
Havsmiljöinstitutet, 2013
National Category
Environmental Sciences Ecology
Identifiers
urn:nbn:se:umu:diva-114670 (URN)
Available from: 2016-01-25 Created: 2016-01-25 Last updated: 2018-06-07Bibliographically approved
Degerlund, M., Huseby, S., Zingone, A., Sarno, D. & Landfald, B. (2012). Functional diversity in cryptic species of Chaetoceros socialis Lauder (Bacillariophyceae). Journal of Plankton Research, 34(5), 416-431
Open this publication in new window or tab >>Functional diversity in cryptic species of Chaetoceros socialis Lauder (Bacillariophyceae)
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2012 (English)In: Journal of Plankton Research, ISSN 0142-7873, E-ISSN 1464-3774, Vol. 34, no 5, p. 416-431Article in journal (Refereed) Published
Abstract [en]

The cosmopolitan distribution of the marine planktonic diatom Chaetoceros socialis Lauder is generally interpreted as a case of wide ecological plasticity. However, cryptic diversity has recently been observed within this taxon and this genetic diversity could extend to phenotypic differences between allopatric populations. Monoclonal strains of C. socialis isolated from NE Atlantic/Arctic and Tyrrhenian Sea waters were cultivated at 2.5, 8 and 13°C, and analysed for morphological, phylogenetic (LSU rRNA gene) and physiological (growth rate, photosynthetic yield) traits. The molecular analysis indicated an unequivocal divergence between the southern and the northern strains. Clear differences in spore morphology between the two groups were also observed, despite their morphological similarity in vegetative form. The physiological data demonstrated a functional partition between the northern and southern strains. The northern strains showed significantly higher growth rates than the southern ones at the lower temperatures, and vice versa at 13°C. Differences between the groups were also observed in the photosynthetic yields. These results reveal the expression of allopatric speciation in several phenotypic characters, providing a functional dimension to the cryptic, or rather pseudo-cryptic, diversity observed within C. socialis. We believe that such an integrated approach is useful for robust taxonomic and functional delimitations of presumed cosmopolitan microorganisms.

Place, publisher, year, edition, pages
Oxford University Press, 2012
Keywords
functional diversity, cryptic diversity, cosmopolitan, species concept, diatoms
National Category
Biological Systematics
Identifiers
urn:nbn:se:umu:diva-112691 (URN)10.1093/plankt/fbs004 (DOI)000302299400006 ()2-s2.0-84859392342 (Scopus ID)
Available from: 2015-12-14 Created: 2015-12-14 Last updated: 2018-08-15Bibliographically approved
Huseby, S., Degerlund, M., Zingone, A. & Hansen, E. (2012). Metabolic fingerprinting reveals differences between northern and southern strains of the cryptic diatom Chaetoceros socialis. European journal of phycology, 47(4), 480-489
Open this publication in new window or tab >>Metabolic fingerprinting reveals differences between northern and southern strains of the cryptic diatom Chaetoceros socialis
2012 (English)In: European journal of phycology, ISSN 0967-0262, E-ISSN 1469-4433, Vol. 47, no 4, p. 480-489Article in journal (Refereed) Published
Abstract [en]

Morphology and molecular phylogeny constitute the structural elements of diatom taxonomy. These approaches do not, however, give information on the functioning of taxa. Additional methods to serve a more integrated and wide-ranging taxonomy have therefore been called for. Metabolic fingerprinting is one approach used within the field of metabolomics, often applied in classification of samples. Here we apply metabolic fingerprinting in a taxonomic study of a cryptic diatom species. Strains of the cosmopolitan diatom Chaetoceros socialis from two geographical areas; the north-east Atlantic and Arctic and the Gulf of Naples, were cultivated at three different temperatures; 2.5, 8 and 13°C. The strains from the two different geographical areas exhibited different growth rates as well as different photosynthetic efficiencies. Algal extracts, collected at the end of the growth experiments, were analysed by Ultra-Performance Liquid Chromatography High Resolution Mass Spectrometry. The two groups of strains were separated by principal component analysis of their metabolic fingerprints. Analysis of the data revealed both qualitative and quantitative differences in metabolite markers. These phenotypic differences reinforce differences also found for morphology, phylogenetic markers and growth rates, and point at different adaptive characteristics in organisms living under different temperature regimes.

Place, publisher, year, edition, pages
Taylor & Francis, 2012
Keywords
biogeography, Chaetoceros socialis, cryptic diversity, diatoms, high performance liquid chromatography, mass spectrometry, metabolic fingerprinting, physiology, phytoplankton, taxonomy
National Category
Biological Systematics
Identifiers
urn:nbn:se:umu:diva-112694 (URN)10.1080/09670262.2012.741714 (DOI)000311784700012 ()2-s2.0-84870866491 (Scopus ID)
Available from: 2015-12-14 Created: 2015-12-14 Last updated: 2018-08-15Bibliographically approved
Karlsson, B., Hajdu, S., Andersson, A. & Huseby, S. (2008). Skadliga algblomningar. In: Havet: om miljötillståndet i svenska havsområden. 2008 (pp. 46-49). Stockholm: Naturvårdsverket
Open this publication in new window or tab >>Skadliga algblomningar
2008 (Swedish)In: Havet: om miljötillståndet i svenska havsområden. 2008, Stockholm: Naturvårdsverket, 2008, p. 46-49Chapter in book (Other academic)
Place, publisher, year, edition, pages
Stockholm: Naturvårdsverket, 2008
Series
Havet, ISSN 1654-6741 ; 2008
National Category
Biological Sciences Environmental Sciences Oceanography, Hydrology and Water Resources
Identifiers
urn:nbn:se:umu:diva-114790 (URN)9789162012717 (ISBN)
Available from: 2016-01-28 Created: 2016-01-28 Last updated: 2019-06-13Bibliographically approved
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