Stable isotope mixing models in aquatic ecology require δ13C values for food web end members such as phytoplankton and bacteria, however it is rarely possible to measure these directly. Hence there is a critical need for improved methods for estimating the δ13C ratios of phytoplankton, bacteria and terrestrial detritus from within mixed seston. We determined the δ13C values of lipids, phospholi...

Synchrotron-based Fourier-transform infrared (FTIR) microspectroscopy was used to distinguish micropopulations of the codominant algae Microcystis aeruginosa (Cyanophyceae) and Ceratium hirundinella (Dinophyceae) in mixed phytoplankton samples taken from the water column of a stratified eutrophic lake (Rostherne Mere, UK). FTIR spectra of the two algae showed a closely similar sequence of 10 ba...

The characteristic colors of the different classes of algae and the striking changes in color of individuals (especially among the Cyanophyceae) have compelled the attention of botanists for many years. Engelmann (1883) observed the rate of assimilation of a number of kinds of algae in the different parts of the spectrum. He concluded that they assimilated fastest in light of a color complement...

In Cameroon, rivers are subjected to physicochemical disturbances, which increase the degradation of water quality. The aim this study was determine spatio-temporal diversity phytoplankton groups and evaluate environmental parameters sampling sites in order assess quality two hydrographic networks. Physicochemicals analyzes were carried out according standard methods while organisms harvested b...

Phytoplankton groups are one of the major quality element to be used in evaluation trophic and ecological state freshwater ecosystems according EU Water Framework Directive. This research was made assess status Lake Bafa Turkey, on basis phytoplankton communities. Büyük Menderes River is most important factor that carries pollutants Bafa. The eight sampling station were assigned evaluate lake. ...

Abstract Background The Nile River included diverse phytoplankton compositions belonging to five main categories. Algae have been classified and identified through comparative morphology. Results Pyrrophyta, Charophyta, Cyanophyta, Chlorophyta, Bacillariophyta were presented the full period of investigation with 1, 3, 14, 23, 28 species, respectively. Therefore, it may be important note that di...

   Urmia Lake is one of the two large hypersaline lakes in the world which have Artemia. It is located in northwest of Iran. Due to a decrease in water inflow and volume, the salinity of Urmia Lake has reached to more than 300 g.l-1 since 2001. The increased salinity has greatly influenced biological aspects of the lake, and caused the lake undergoes at critical conduction. The aim of the prese...

The Phytoplankton community and the abiotic factors of the Cruzeta reservoir were studied at three depths, surface, middle (2 m) and bottom, from September, 2004 to June, 2005, in order to characterize the environment and assess the possible factors that influence the compositional change of phytoplankton. Ninety species belonging to 6 classes (Chlorophyceae, Bacillariophyceae, Cyanophyceae, Di...

Water samples were seasonally collected from 12 stations of the eastern coast of Suez Gulf during autumn of 2012 and winter, spring, and summer of 2013 in order to investigate phytoplankton community structure in relation to some physicochemical parameters. The study area harbored a diversified phytoplankton community (138 species), belonging to 67 genera. Four algal groups were represented and...