A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Temperature, phosphorus and species composition will all influence phytoplankton production and content of polyunsaturated fatty acids (2023)

Calderini, M. L., Pääkkönen, S., Salmi, P., Peltomaa, E., & Taipale, S. J. (2023). Temperature, phosphorus and species composition will all influence phytoplankton production and content of polyunsaturated fatty acids. Journal of Plankton Research, 45(4), 625-635. https://doi.org/10.1093/plankt/fbad026

JYU-tekijät tai -toimittajat

Calderini, Marco
Pääkkönen, Salli
Salmi, Pauliina
Taipale, Sami

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Calderini, Marco L.; Pääkkönen, Salli; Salmi, Pauliina; Peltomaa, Elina; Taipale, Sami J.

Lehti tai sarja: Journal of Plankton Research

ISSN: 0142-7873

eISSN: 1464-3774

Julkaisuvuosi: 2023

Ilmestymispäivä: 24.06.2023

Volyymi: 45

Lehden numero: 4

Artikkelin sivunumerot: 625-635

Kustantaja: Oxford University Press (OUP)

Julkaisumaa: Britannia

Julkaisun kieli: englanti

DOI: https://doi.org/10.1093/plankt/fbad026

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/88243

Tiivistelmä

Temperature increases driven by climate change are expected to decrease the availability of polyunsaturated fatty acids in lakes worldwide. Nevertheless, a comprehensive understanding of the joint effects of lake trophic status, nutrient dynamics and warming on the availability of these biomolecules is lacking. Here, we conducted a laboratory experiment to study how warming (18–23°C) interacts with phosphorus (0.65–2.58 μM) to affect phytoplankton growth and their production of polyunsaturated fatty acids. We included 10 species belonging to the groups diatoms, golden algae, cyanobacteria, green algae, cryptophytes and dinoflagellates. Our results show that both temperature and phosphorus will boost phytoplankton growth, especially stimulating certain cyanobacteria species (Microcystis sp.). Temperature and phosphorus had opposing effects on polyunsaturated fatty acid proportion, but responses are largely dependent on species. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) synthesizing species did not clearly support the idea that warming decreases the production or content of these essential polyunsaturated fatty acids. Our results suggest that warming may have different effects on the polyunsaturated fatty acid availability in lakes with different nutrient levels, and that different species within the same phytoplankton group can have contrasting responses to warming. Therefore, we conclude that future production of EPA and DHA is mainly determined by species composition.

YSO-asiasanat: plankton; rasvahapot; järvet; fosfori; ilmastonmuutokset; lämpötila

Vapaat asiasanat: phytoplankton; polyunsaturated fatty acids; lake; climate change; temperature; phosphorus

Liittyvät organisaatiot

Hankkeet, joissa julkaisu on tehty

OKM-raportointi: Kyllä

VIRTA-lähetysvuosi: 2023

JUFO-taso: 1