Numerous taxonomic groups exhibit an evolutionary trajectory in cell or body size. The size structure of marine phytoplankton communities strongly affects food web structure and organic carbon export into the ocean interior, yet macroevolutionary patterns in the size structure of phytoplankton communities have not been previously investigated. We constructed a database of the size of the silica...

Undisturbed records of resting stages produced in the past and stored in coastal sediments are very valuable to science, because they may provide unique insights into past evolutionary and ecological trajectories. Within marine phytoplankton, multidecadal time series of monoclonal strains germinated from resting stages have been established for diatoms (Skeletonema marinoi) and dinoflagellates ...

The shape of the productivity-diversity relationship (PDR) for marine phytoplankton has been suggested to be unimodal, that is, diversity peaking at intermediate levels of productivity. However, there are few observations and there has been little attempt to understand the mechanisms that would lead to such a shape for planktonic organisms. Here we use a marine ecosystem model together with the...

Agostino Merico*, Gunnar Brandt, S. Lan Smith and Marcel Oliver 1 Systems Ecology Group, Leibniz Center for Tropical Marine Ecology, Bremen, Germany 2 School of Engineering and Science, Jacobs University, Bremen, Germany 3 Marine Ecosystem Dynamics Research Group, Research and Development Center for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan 4 CREST, Ja...

Abstract Arctic freshwaters are facing multiple environmental pressures, including rapid climate change and increasing land___use activities. Freshwater plankton assemblages expected to reflect the effects of these stressors through shifts in species distributions changes biodiversity. These may occur rapidly due short generation times high dispersal capabilities both phyto___ zooplankton. Spat...

The restoration of an uncontrolled phosphogypsum landfill was investigated for its effects on the seasonal distribution of phytoplankton, ciliates, and copepods. Sampling was carried out monthly from September 2007 to August 2008 at four ponds of increasing salinity (A1, 41 psu; A5, 46 psu; A16, 67 psu; and C31, 77 psu) in the Sfax solar saltern (southeastern Tunisia). Physicochemical and biolo...

The present study was to understand the diversity and distribution pattern of microalgae in fresh water system represented by an open artificial pond. A total 100 species phytoplanktons were indentified from different groups Chandrasarovar pond Jhalawar, Rajasthan. Among identified phytoplankton Cyanophyceae (39%) formed dominant group, followed Chlorophyceae (34%) Bacillariophyceae (23%) Eugle...