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Legrand, C. (2018). Algoland: industry and ecology together. In: Presented at the 1st Nordic Algae Symposium 2018 (NAS18), Helsinki, Finland, January 31, 2018: . Paper presented at The 1st Nordic Algae Symposium 2018 (NAS18), Helsinki, Finland, January 31, 2018.
Open this publication in new window or tab >>Algoland: industry and ecology together
2018 (English)In: Presented at the 1st Nordic Algae Symposium 2018 (NAS18), Helsinki, Finland, January 31, 2018, 2018Conference paper, Oral presentation only (Other academic)
National Category
Ecology
Research subject
Ecology, Aquatic Ecology
Identifiers
urn:nbn:se:lnu:diva-73792 (URN)
Conference
The 1st Nordic Algae Symposium 2018 (NAS18), Helsinki, Finland, January 31, 2018
Projects
AlgolandEcochange
Available from: 2018-05-03 Created: 2018-05-03 Last updated: 2018-05-31Bibliographically approved
Legrand, C. (2018). Algoland Workshop: business models. In: Algoland 2030 Workshop, Kalmar, Sweden, April 24, 2018: . Paper presented at Algoland 2030 Workshop, Kalmar, Sweden, April 24, 2018.
Open this publication in new window or tab >>Algoland Workshop: business models
2018 (English)In: Algoland 2030 Workshop, Kalmar, Sweden, April 24, 2018, 2018Conference paper, Oral presentation only (Other academic)
National Category
Ecology
Research subject
Ecology, Aquatic Ecology
Identifiers
urn:nbn:se:lnu:diva-73947 (URN)
Conference
Algoland 2030 Workshop, Kalmar, Sweden, April 24, 2018
Projects
AlgolandEcoChange
Note

Algoland är projektet där akvatisk forskning tillsammans med kompetens från industrin tarfram innovativa, hållbara lösningar som minskar utsläpp av koldioxid och näringsämnen. Samtidigtproduceras en värdefull biomassa som kan användas som djurfoder eller biobränslen.För att ta nästa steg i Algoland projektet, bjuder Catherine Legrand och forskare inom Algoland in till en workshop där vi tillsammans blickar in iframtiden.

Målet är att ta fram ett eller flera erbjudanden baserade på Algoland för att ta konceptet ett steg närmare näringslivet. Detta kan hjälpa att identifiera erbjudanden, produkter, nyaforskningsmöjligheter samt bana vägen för att Algoland ska komma till ännu större nytta i samhälletsom en ekonomiskt, socialt och miljömässigt hållbar verksamhet.

Datum: tisdag, 24 april Tid: 10.00 - 15.00 (inklusive lunch)Plats: Villa Solbacken, Svensknabben, Kalmar

Available from: 2018-05-04 Created: 2018-05-04 Last updated: 2018-05-14Bibliographically approved
Hultman, B. (2018). Hållbara transporter nästa mål för Linné. Barometern OT, 16 April, pp. 8
Open this publication in new window or tab >>Hållbara transporter nästa mål för Linné
2018 (Swedish)In: Barometern OT, Vol. 16 April, p. 8-Article in journal, News item (Other (popular science, discussion, etc.)) Published
Keywords
environmentally certified, university, sustainability, sustainable transport, sweden, kalmar, växjö, public work, administrative studies, miljö, hållbarhet, samarbete, transport, miljöcertifieringen
National Category
Environmental Sciences Public Administration Studies
Research subject
Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-74360 (URN)
Available from: 2018-05-15 Created: 2018-05-15 Last updated: 2018-07-20Bibliographically approved
Andersson, A., Brugel, S., Paczkowska, J., Rowe, O. F., Figueroa, D., Kratzer, S. & Legrand, C. (2018). Influence of allochthonous dissolved organic matter on pelagic basal production in a northerly estuary. Estuarine, Coastal and Shelf Science, 204, 225-235
Open this publication in new window or tab >>Influence of allochthonous dissolved organic matter on pelagic basal production in a northerly estuary
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2018 (English)In: Estuarine, Coastal and Shelf Science, ISSN 0272-7714, E-ISSN 1096-0015, Vol. 204, p. 225-235Article in journal (Refereed) Published
Abstract [en]

Phytoplankton and heterotrophic bacteria are key groups at the base of aquatic food webs. In estuaries receiving riverine water with a high content of coloured allochthonous dissolved organic matter (ADOM), phytoplankton primary production may be reduced, while bacterial production is favoured. We tested this hypothesis by performing a field study in a northerly estuary receiving nutrient-poor, ADOM-rich riverine water, and analyzing results using multivariate statistics. Throughout the productive season, and especially during the spring river flush, the production and growth rate of heterotrophic bacteria were stimulated by the riverine inflow of dissolved organic carbon (DOC). In contrast, primary production and photosynthetic efficiency (i.e. phytoplankton growth rate) were negatively affected by DOC. Primary production related positively to phosphorus, which is the limiting nutrient in the area. In the upper estuary where DOC concentrations were the highest, the heterotrophic bacterial production constituted almost 100% of the basal production (sum of primary and bacterial production) during spring, while during summer the primary and bacterial production were approximately equal. Our study shows that riverine DOC had a strong negative influence on coastal phytoplankton production, likely due to light attenuation. On the other hand DOC showed a positive influence on bacterial production since it represents a supplementary food source. Thus, in boreal regions where climate change will cause increased river inflow to coastal waters, the balance between phytoplankton and bacterial production is likely to be changed, favouring bacteria. The pelagic food web structure and overall productivity will in turn be altered. (C) 2018 The Authors. Published by Elsevier Ltd.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Primary and bacterial production, Coastal areas, Estuary, Allochthonous dissolved organic matter, Northern Baltic Sea
National Category
Biological Sciences
Research subject
Ecology, Aquatic Ecology
Identifiers
urn:nbn:se:lnu:diva-76463 (URN)10.1016/j.ecss.2018.02.032 (DOI)000429757300020 ()
Available from: 2018-07-10 Created: 2018-07-10 Last updated: 2018-10-24Bibliographically approved
Berner, C., Bertos-Fortis, M., Pinhassi, J. & Legrand, C. (2018). Response of Microbial Communities to Changing Climate Conditions During Summer Cyanobacterial Blooms in the Baltic Sea. Frontiers in Microbiology, 9, Article ID 1562.
Open this publication in new window or tab >>Response of Microbial Communities to Changing Climate Conditions During Summer Cyanobacterial Blooms in the Baltic Sea
2018 (English)In: Frontiers in Microbiology, ISSN 1664-302X, E-ISSN 1664-302X, Vol. 9, article id 1562Article in journal (Refereed) Published
Abstract [en]

Frequencies and biomass of Baltic Sea cyanobacterial blooms are expected to be higher in future climate conditions, but also of longer duration as a result of increased sea surface temperature. Concurrently, climate predictions indicate a reduced salinity in the Baltic Sea. These climate-driven changes are expected to alter not solely the phytoplankton community but also the role of microbial communities for nutrient remineralization. Here, we present the response of summer plankton communities (filamentous cyanobacteria, picocyanobacteria, and heterotrophic bacteria) to the interplay of increasing temperature (from 16 to 18 degrees C and 20 degrees C) and reduced salinity (from salinity 6.9 to 5.9) in the Baltic Proper (NW Gotland Sea) using a microcosm approach. Warmer temperatures led to an earlier peak of cyanobacterial biomass, while yields were reduced. These conditions caused a decrease of nitrogen-fixers (Dolichospermum sp.) biomass, while non nitrogen-fixers (Pseudanabaena sp.) increased. Salinity reduction did not affect cyanobacterial growth nor community composition. Among heterotrophic bacteria, Actinobacteria showed preference for high temperature, while Gammaproteobacteria thrived at in situ temperature. Heterotrophic bacteria community changed drastically at lower salinity and resembled communities at high temperature. Picocyanobacteria and heterotrophic bacterial biomass had a pronounced increase associated with the decay of filamentous cyanobacteria. This suggests that shifts in community composition of heterotrophic bacteria are influenced both directly by abiotic factors (temperature and salinity) and potentially indirectly by cyanobacteria. Our findings suggest that at warmer temperature, lower yield of photosynthetic cyanobacteria combined with lower proportion of nitrogen-fixers in the community could result in lower carbon export to the marine food web with consequences for the decomposer community of heterotrophic bacteria.

Place, publisher, year, edition, pages
Frontiers Media S.A., 2018
Keywords
microscopy, 16S rRNA, cyanobacteria, heterotrophic bacteria, biomass, summer bloom, Baltic Sea, climate change
National Category
Microbiology Ecology
Research subject
Ecology, Microbiology
Identifiers
urn:nbn:se:lnu:diva-77393 (URN)10.3389/fmicb.2018.01562 (DOI)000439753100001 ()30090087 (PubMedID)
Available from: 2018-08-29 Created: 2018-08-29 Last updated: 2018-08-29Bibliographically approved
Fridolfsson, E., Lindehoff, E., Legrand, C. & Hylander, S. (2018). Thiamin (vitamin B1) content in phytoplankton and zooplankton in the presence of filamentous cyanobacteria. Limnology and Oceanography
Open this publication in new window or tab >>Thiamin (vitamin B1) content in phytoplankton and zooplankton in the presence of filamentous cyanobacteria
2018 (English)In: Limnology and Oceanography, ISSN 0024-3590, E-ISSN 1939-5590Article in journal (Refereed) Epub ahead of print
Abstract [en]

Top predators in several aquatic food webs regularly display elevated reproductive failure, caused by thiamin(vitamin B1)deficiency. The reasons for these low-thiamin levels are not understood and information about the transfer of thiamin from the producers (bacteria and phytoplankton) to higher trophic levels is limited. One main concern is whether cyanobacterial blooms could negatively affect thiamin transfer in aquatic systems. Laboratory experiments with Baltic Sea plankton communities and single phytoplankton species were used to study the effect of filamentous cyanobacteria on the transfer of thiamin from phytoplankton to zooplankton. Experiments showed that the thiamin content in copepods was reduced when exposed to elevated levels of cyanobacteria, although filamentous cyanobacteria had higher levels of thiamin than any other analyzed phytoplankton species. Filamentous cyanobacteria also had a negative effect on copepod egg production despite high concentrations of non-cyanobacterial food. Phytoplankton species composition affected overall thiamin concentration with relatively more thiamin available for transfer when the relative abundance of Dinophyceae was higher. Finally, phytoplankton thiamin levels were lower when copepods were abundant, indicating that grazers affect thiamin levels in phytoplankton community, likely by selective feeding. Overall, high levels of thiamin in phytoplankton communities are not reflected in the copepod community. We conclude that presence of filamentous cyanobacteria during summer potentially reduces the transfer of thiamin to higher trophic levels by negatively affecting phytoplankton and copepod thiamin content as well as copepod reproduction, thereby lowering the absolute capacity of the food web to transfer thiamin through copepods to higher trophic levels.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018
Keywords
Acartia sp., Baltic Sea, community composition, trophic transfer, micronutrient, copepod
National Category
Ecology
Research subject
Ecology, Aquatic Ecology
Identifiers
urn:nbn:se:lnu:diva-77174 (URN)10.1002/lno.10949 (DOI)
Projects
EcoChangeCentre for Ecology and Evolution in Microbial Model Systems - EEMiS
Funder
Swedish Research Council Formas, 215-2012-1319Ecosystem dynamics in the Baltic Sea in a changing climate perspective - ECOCHANGECarl Tryggers foundation The Royal Swedish Academy of Sciences
Available from: 2018-08-17 Created: 2018-08-17 Last updated: 2018-10-24Bibliographically approved
Andreas, B. (2017). Algblomningens positiva sidor lyftes fram. Östra Småland (31 Aug), pp. 6
Open this publication in new window or tab >>Algblomningens positiva sidor lyftes fram
2017 (Swedish)In: Östra Småland, no 31 Aug, p. 6-Article in journal, News item (Other (popular science, discussion, etc.)) Published
Keywords
baltic sea, carbon dioxide, nutrient, eutrophication, algae, microalgae, climate change, global warming, industry, collaboration, östersjön, hållbarhet, alger, mikroalger, koldioxid, climate change, global warming, industri, cementa, KSRR, Kalmar Energi, samverkan, algoland, Global uppvärmning, klimatförändring
National Category
Ecology Environmental Sciences
Research subject
Ecology, Aquatic Ecology; Natural Science, Ecology; Natural Science, Environmental Science
Identifiers
urn:nbn:se:lnu:diva-74731 (URN)
Projects
AlgolandEcoChangeEEMiS
Available from: 2018-05-30 Created: 2018-05-30 Last updated: 2018-06-28Bibliographically approved
Olofsson, M. & Legrand, C. (2017). ALGOLAND – Recovery: Avfall används för att producera en värdefull produkt - algbiomassa. In: Linnaeus Technical Centre (LTC) och Linnaeus Innovation Design Lab (Lidlab), May 8th 2017: . Paper presented at Linnaeus Technical Centre (LTC) och Linnaeus Innovation Design Lab (Lidlab), May 8th 2017.
Open this publication in new window or tab >>ALGOLAND – Recovery: Avfall används för att producera en värdefull produkt - algbiomassa
2017 (Swedish)In: Linnaeus Technical Centre (LTC) och Linnaeus Innovation Design Lab (Lidlab), May 8th 2017, 2017Conference paper, Oral presentation only (Other academic)
National Category
Ecology
Research subject
Ecology, Aquatic Ecology
Identifiers
urn:nbn:se:lnu:diva-73790 (URN)
Conference
Linnaeus Technical Centre (LTC) och Linnaeus Innovation Design Lab (Lidlab), May 8th 2017
Projects
EcoChangeAlgoland
Note

Ej belagd 20180504

Available from: 2018-05-03 Created: 2018-05-03 Last updated: 2018-05-07Bibliographically approved
Paczkowska, J., Rowe, O., Schlüter, L., Legrand, C., Karlson, B. & Andersson, A. (2017). Allochthonous matter: an important factor shaping the phytoplankton community in the Baltic Sea. Journal of Plankton Research, 39(1), 23-34
Open this publication in new window or tab >>Allochthonous matter: an important factor shaping the phytoplankton community in the Baltic Sea
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2017 (English)In: Journal of Plankton Research, ISSN 0142-7873, E-ISSN 1464-3774, Vol. 39, no 1, p. 23-34Article in journal (Refereed) Published
Abstract [en]

It is well-known that nutrients shape phytoplankton communities in marine systems, but in coastal waters allochthonous dissolved organic matter (ADOM) may also be of central importance. We studied how humic substances (proxy of ADOM) and other variables influenced the nutritional strategies, size structure and pigment content of the phytoplankton community along a south–north gradient in the Baltic Sea. During the summer, the proportion of mixotrophs increased gradually from the phosphorus-rich south to the ADOM-rich north, probably due to ADOM-fueled microbes. The opposite trend was observed for autotrophs. The chlorophyll a(Chl a): carbon (C) ratio increased while the levels of photoprotective pigments decreased from south to north, indicating adaptation to the darker humic-rich water in the north. Picocyanobacteria dominated in phosphorus-rich areas while nanoplankton increased in ADOM-rich areas. During the winter–spring the phytoplankton biomass and concentrations of photoprotective pigments were low, and no trends with respect to autotrophs and mixotrophs were observed. Microplankton was the dominant size group in the entire study area. We conclude that changes in the size structure of the phytoplankton community, the Chl a:C ratio and the concentrations of photoprotective pigments are indicative of changes in ADOM, a factor of particular importance in a changing climate.

Place, publisher, year, edition, pages
Oxford University Press, 2017
National Category
Biological Sciences
Research subject
Ecology, Aquatic Ecology
Identifiers
urn:nbn:se:lnu:diva-61715 (URN)10.1093/plankt/fbw081 (DOI)000397101400004 ()
Projects
EcoChange
Available from: 2017-03-27 Created: 2017-03-27 Last updated: 2018-06-08Bibliographically approved
Lindh, M. V., Sjöstedt, J., Ekstam, B., Casini, M., Lundin, D., Hugerth, L., . . . Pinhassi, J. (2017). Metapopulation theory identifies biogeographical patterns among core and satellite marine bacteria scaling from tens to thousands of kilometers. Environmental Microbiology, 19(3), 1222-1236
Open this publication in new window or tab >>Metapopulation theory identifies biogeographical patterns among core and satellite marine bacteria scaling from tens to thousands of kilometers
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2017 (English)In: Environmental Microbiology, ISSN 1462-2912, E-ISSN 1462-2920, Vol. 19, no 3, p. 1222-1236Article in journal (Refereed) Published
Abstract [en]

Metapopulation theory developed in terrestrial ecology provides applicable frameworks for interpreting the role of local and regional processes in shaping species distribution patterns. Yet, empirical testing of metapopulation models on microbial communities is essentially lacking. We determined regional bacterioplankton dynamics from monthly transect sampling in the Baltic Sea Proper using 16S rRNA gene sequencing. A strong positive trend was found between local relative abundance and occupancy of populations. Notably, the occupancy-frequency distributions were significantly bimodal with a satellite mode of rare endemic populations and a core mode of abundant cosmopolitan populations (e.g. Synechococcus, SAR11 and SAR86 clade members). Temporal changes in population distributions supported several theoretical frameworks. Still, bimodality was found among bacterioplankton communities across the entire Baltic Sea, and was also frequent in globally distributed datasets. Datasets spanning waters with widely different physicochemical characteristics or environmental gradients typically lacked significant bimodal patterns. When such datasets were divided into subsets with coherent environmental conditions, bimodal patterns emerged, highlighting the importance of positive feedbacks between local abundance and occupancy within specific biomes. Thus, metapopulation theory applied to microbial biogeography can provide novel insights into the mechanisms governing shifts in biodiversity resulting from natural or anthropogenically induced changes in the environment.

Place, publisher, year, edition, pages
Wiley-Blackwell, 2017
National Category
Ecology Microbiology
Research subject
Ecology, Microbiology; Natural Science, Ecology
Identifiers
urn:nbn:se:lnu:diva-61540 (URN)10.1111/1462-2920.13650 (DOI)000397525100031 ()28028880 (PubMedID)
Projects
EcoChange
Available from: 2017-03-21 Created: 2017-03-21 Last updated: 2018-10-24Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-7155-3604

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