(Table 1) Biovolume variations of cyanobacteria and total phytoplankton in the Frederiksborg Slotsso, Denmark ...

• Main Authors: Cazzanelli, Matteo, Warming, Trine Perlt, Christoffersen, Kirsten Seestern
• Format: Dataset
• Language: English
• Published: PANGAEA 2008
• Subjects: DATE/TIME; DEPTH, water; Depth, top/min; Depth, bottom/max; Anabaena planctonica, biovolume; Anabaena planctonica; Microcystis spp., biovolume; Microcystis spp.; Cyanobacteria, biovolume; Cyanobacteria; Phytoplankton, biovolume; Water sample; International Polar Year 2007-2008 IPY; International Polar Year; IPY
• Online Access: https://dx.doi.org/10.1594/pangaea.808239; https://doi.pangaea.de/10.1594/PANGAEA.808239

Several studies have shown that submerged macrophytes provide a refuge for zooplankton against fish predation, whereas the role of emergent and floating-leaved species, which are often dominant in eutrophic turbid lakes, is far less investigated. Zooplankton density in open water and amongst emergent and floating-leaved vegetation was monitored in a small, eutrophic lake (Frederiksborg Slotsso) in Denmark during July-October 2006. Emergent and floating-leaved macrophytes harboured significantly higher densities of pelagic as well as plant-associated zooplankton species, compared to the open water, even during periods where the predation pressure was presumably high (during the recruitment of 0+ fish fry). Zooplankton abundance in open water and among vegetation exhibited low values in July and peaked in August. Bosmina and Ceriodaphnia dominated the zooplankton community in the littoral vegetated areas (up to 4,400 ind/l among Phragmites australis and 11,000 ind/l between Polygonum amphibium stands), whereas ... : Total cyanobacteria and phytoplankton biovolume was originally given in mm**3/l and was converted into µm**3/ml by multiplying by 10**6. Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...