Environmental variables driving species and genus level changes in annual plankton biomass

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)

Interna författare/redaktörer

Publikationens författare: Louise Forsblom, Jonna Engström-Öst, Sirpa Lehtinen, Inga Lips, Andreas Lindén
Förläggare: Oxford University Press
Publiceringsår: 2019
Tidskrift: Journal of Plankton Research
Tidskriftsakronym: J Plankton Res
Volym: 41
Nummer: 6
Artikelns första sida, sidnummer: 925
Artikelns sista sida, sidnummer: 938


Abiotic variables subject to global change are known to affect plankton
biomasses, and these effects can be species-specific. Here, we
investigate the environmental drivers of annual biomass using plankton
data from the Gulf of Finland in the northern Baltic Sea, spanning years
1993–2016. We estimated annual biomass time-series of 31 nanoplankton
and microplankton species and genera from day-level data, accounting for
the average phenology and wind. We found wind effects on day-level
biomass in 16 taxa. We subsequently used state-space models to connect
the annual biomass changes with potential environmental drivers
(temperature, salinity, stratification, ice cover and inorganic
nutrients), simultaneously accounting for temporal trends. We found
clear environmental effects influencing the annual biomasses of Dinobryon faculiferum, Eutreptiella spp., Protoperidinium bipes, Pseudopedinella spp., Snowella spp. and Thalassiosira baltica
and indicative effects in 10 additional taxa. These effects mostly
concerned temperature, salinity or stratification. Together, these 16
taxa represent two-thirds of the summer biomass in the sampled
community. The inter-annual variability observed in salinity and
temperature is relatively low compared to scenarios of predicted change
in these variables. Therefore, the potential impacts of the presented
effects on plankton biomasses are considerable.

Senast uppdaterad 2020-02-04 vid 09:42