Drivers of phytoplankton production and community structure in nutrient-poor estuaries receiving terrestrial organic inflow

Show full item record



Permalink

http://hdl.handle.net/10138/308445

Citation

Paczkowska , J , Rowe , O F , Figueroa , D & Andersson , A 2019 , ' Drivers of phytoplankton production and community structure in nutrient-poor estuaries receiving terrestrial organic inflow ' , Marine Environmental Research , vol. 151 , 104778 . https://doi.org/10.1016/j.marenvres.2019.104778

Title: Drivers of phytoplankton production and community structure in nutrient-poor estuaries receiving terrestrial organic inflow
Author: Paczkowska, Joanna; Rowe, O.F.; Figueroa, Daniela; Andersson, Agneta
Contributor: University of Helsinki, Sari Timonen / Research Group
Date: 2019-10
Language: eng
Number of pages: 10
Belongs to series: Marine Environmental Research
ISSN: 0141-1136
URI: http://hdl.handle.net/10138/308445
Abstract: The influence of nutrient availability and light conditions on phytoplankton size-structure, nutritional strategy and production were studied in a phosphorus-poor estuary in the northern Baltic Sea receiving humic-rich river water. The relative biomass of mixotrophic nanophytoplankton peaked in spring when heterotrophic bacterial production was high, while autotrophic microphytoplankton had their maximum in summer when primary production displayed highest values. Limiting substance only showed small changes over time, and the day light was at saturating levels all through the study period. We also investigated if the phytoplankton taxonomic richness influences the production. Structured equation modelling indicated that an increase of the taxonomic richness during the warm summer combined with slightly higher phosphorus concentration lead to increased resource use efficiency, which in turn caused higher phytoplankton biomass and primary production. Our results suggest that climate warming would lead to higher primary production in northerly shallow coastal areas, which are influenced by humic-rich river run-off from un-disturbed terrestrial systems.
Subject: 1181 Ecology, evolutionary biology
1172 Environmental sciences
Phytoplankton
Size-structure
Primary production
Autotrophy
Mixotrophy
Taxonomic richness
Resource use efficiency
Coastal waters
Phosphorus-poor estuaries
CARBON
FOOD-WEB
CLIMATE-CHANGE
GLOBAL EXPANSION
SIZE STRUCTURE
BALTIC SEA
BIOMASS
HUMIC SUBSTANCES
MARINE
BACTERIOPLANKTON PRODUCTION
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
1_s2.0_S0141113619302132_main.pdf 2.237Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record