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- Title
Picoplankton dynamics in a hypertrophic semiarid wetland.
- Authors
ORTEGA-MAYAGOITIA, ELIZABETH; RODRIGO, MARÍA A.; ROJO, CARMEN; ÁLVAREZ-COBELAS, MIGUEL
- Abstract
Analyzes the picoplanktonic community patterns and their related environmental factors in a hypertrophic semi-arid wetland located in Central Spain. Annual mean abundance autotrophic picoplankton (APP); Percentage of total phytoplankton biomass; How researchers tested (a) the trophic cascade hypothesis by analyzing the effect of presence/absence of mosquitofish (experiment 1) or directly modifying the zooplanktonic community (experiment 2), and (b) the bottom-up regulation by altering the nutrient conditions (presence/absence of sediment in experiment 1; reducing the nutrient content in experiment 2); Results indicating bacterioplankton failed to show any behavior related to trophic cascade direct effects, while nutrients increased its abundance; View that APP was affected positively by nutrients and negatively by zooplankton grazing.
- Subjects
PLANKTON; ARID regions; WETLANDS; ZOOPLANKTON; WESTERN mosquitofish; PLANT nutrients
- Publication
Wetlands, 2002, Vol 22, Issue 3, p1
- ISSN
0277-5212
- Publication type
Article
- DOI
10.1672/0277-5212(2002)022[0575:PDIAHS]2.0.CO;2