Phytoplankton freshwater

The concentrations of the principal elements in marine and freshwaters are given in Figure 11. The concentrations of biologically regulated components, ie, C, N, P, and Si, vary with depth and are markedly influenced by the growth, distribution, and decay of phytoplankton and other organisms. The concentrations of other constituents, especially the salts, ie, Cl ,, and, are remarkably constant and are different from those in fresh... 

C. S. Reynolds, The Ecology of Freshwater Phytoplankton, Cambridge University Press, Cambridge, 1990. 

Ocean prevents eutrophication. Much more water flows into the Mediterranean Sea than is required to replace evaporation from it. The excess, high salinity water exits Gibraltar below the water flowing in af fhe surface. Nufrients that enter the Mediterranean Sea from pollution sources are utilized by marine phytoplankton that sinks and exits with the outflow. Another example is that estuaries often have lower salinity or even freshwater at the surface with a denser saline layer at the bottom. An estuarine circulation occurs with nutrients being trapped in the saline bottom water. 

Little is known about MeHg in phytoplankton, particnlarly freshwater phytoplankton (Becker and Bigham 1995). Concentrations of MeHg in freshwater phytoplankton are related to those in water bnt the partitioning of MeHg between water and phytoplankton is strongly affected by concentrations of dissolved organic matter (Watras et al. 1998). 

Rengefors, K., Ruttenberg, K.C., Haupert, L.C., Taylor, C., Howes, B.L. and Anderson, D.M. (2003). Experimental investigation of taxon-specific response of alkaline phosphatase activity in natural freshwater phytoplankton. Limnolology and Oceanography 48 1167-1175. 

Lay, J.P., A. Muller, L. Peichl, W. Klein, and F. Korte. 1984. Long-term effects of the herbicides atrazine and dichlobenil upon the phytoplankton density and physico-chemical conditions in compartments of a freshwater pond. Chemosphere 13 821-832. 

S.W. Jeffrey, S.W. Wright and M. Zapata, Recent advances in HPLC pigment analysis of phytoplankton. Marine Freshwat. Res. 50 (1999) 879-896. 

Hardy JT, Dauble DD, Felice LJ. 1985. Aquatic fate of synfuel residuals Bioaccumulation of aniline and phenol by the freshwater phytoplankton Scenedesmus quadricauda. Environ Toxicol Chem 4 29-35. 

In Vitro Determination of Chlorophyll a and Pheophytin a in Marine and Freshwater Phytoplankton by... 

Throughout the world, there are many different types of innocuous phytoplankton that can inhabit freshwater ecosystems. However, in some of these ecosystems, certain species of cyanobacteria (blue-green algae) are highly undesirable due to their production of toxins or odorous compounds. 

Phytoplankton marine and freshwater plants that float in the surface waters, many are microscopic and include different forms of algae... 

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