Journal
FRESHWATER BIOLOGY
Volume 52, Issue 6, Pages 988-997Publisher
WILEY
DOI: 10.1111/j.1365-2427.2007.01746.x
Keywords
climate; lakes; phytoplankton; retention time; vollenweider model
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Funding
- Natural Environment Research Council [ceh010022] Funding Source: researchfish
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1. The phytoplankton community model, PROTECH, was used to model the algal response to changing annual mean retention time in a small lake. 2. Simulations of short retention time with a fixed nutrient load resulted in a reduced chlorophyll concentration. A similar relationship was observed when the simulations were repeated but with inflowing nutrients increased in proportion to river discharge. 3. Longer retention time caused the spring bloom to start earlier and the autumn bloom to persist longer. 4. Changes in discharge of the inflowing river also caused a change in the thermal structure of the lake. This change in thermal structure, in turn, influenced the magnitude and composition of the phytoplankton population, particularly those in the CS-functional group, such as Aphanizomenon.
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