Fresh water resources are depleting at a fast rate throughout the world affecting diverse aquatic flora and fauna. Algal responds to adverse changes in habitat which is reflected by their morphotaxonomical deformation occurrences of pollution tolerant taxa changed habitat. Based on findings more than five decades, it has been established that such labeled as bioindicator because tolerance. Taki...

Kakap River Estuary plays an essential role in the life organisms, but it is vulnerable to environmental changes and pollution caused by human activities. This study aims assess presence of plankton species, their abundance diversity as aquatic ecological bio-indicators Estuary. Plankton water samples were taken for three months, with a frequency one sample per month, viz. March, April June 202...

Present work investigated the relationship between Chlorophyll (Chl), of phytoplankton biomass, and sea surface temperature (SST) of the Black Sea, using Sea-viewing Wide Field-of-view Sensor (SeaWiFS) and Advanced Very High Resolution Radiometer (AVHRR) satellite imagery. Satellite derived data could provide information on the amount of sea life present (Brown algae, called kelp, proliferate, ...

Homeostasis, growth and reproduction in crustaceans are under endocrine control as is established in other animals. The identification of crustacean hormones and elucidation of mechanisms of hormonal regulation have been pursued extensively. Mechanisms are found to be partly similar to, but also considerably different from those in insects, although both groups of animals are arthropods. Moltin...

Phytoplankton study has become more significant in the Caspian Sea due to the occurrence of ecological events such as algal blooms and the introduction of the invader species(Ctenophore, Mnemiopsis leidyi). A seasonal study was conducted to investigate the features of phytoplankton community one decade after this invasion in the Iranian coast of Caspian Sea during 2009-2010. According to the re...

Phytoplanktons are the first bio- indicators of pollution in aquatic ecosystems. Phytoplankton assemblage and aquatic ecosystems are always influenced by environmental factors therefore these environmental changes and threats must be understood in any ecosystem. Phytoplankton are inexpensive and readily available bio- indicators. In the present study, phytoplankton were used to study the Sefid ...

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. ...

Palynological study of Tungu Buzum Hill was investigated with a view towards determining the age outcrop, compare its miospore content adjacent Buzu Valley carbonaceous shale, their stratigraphic relationship and paleoenvironment deposition litho-sequence. Field involved litho-description logging achieved by noting rock type, mineralogical composition, bed thickness, texture, sorting, roundness...

phytoplanktons are the first bio- indicators of pollution in aquatic ecosystems. phytoplankton assemblage and aquatic ecosystems are always influenced by environmental factors therefore these environmental changes and threats must be understood in any ecosystem. phytoplankton are inexpensive and readily available bio- indicators. in the present study, phytoplankton were used to study the sefid ...

BACKGROUND Vibrio cholerae non-O1/ non-O139 serogroups have been reported to cause sporadic diarrhoea in humans. Cholera toxins have been mostly implicated for hypersecretion of ions and water into the small intestine. Though most of the V. cholerae non-O1/ non-O139 strains lack these cholera toxins, several other innate virulence factors contribute towards their pathogenicity. The environmenta...