The study of interaction between fish cage culture and sediment population dynamics heterotrophic bacteria in the southern Caspian Sea (Nowshahr region)

Aim . The aim of the study is to analyze current state artificial reproduction Caspian sturgeon and identify problems reducing efficiency ways solve them. Discussion critical sturgeon, which accounts for up 90% world's related resources, concern entire community, due threat extinction these relic individuals on planet. This can be prevented by increasing reproduction. However, natural practical...

Cordylophora caspia, a colonial hydrozoan native to the Ponto-Caspian region, has become a common invader of both fresh and brackish water ecosystems of North America and Europe. We describe 11 polymorphic microsatellite loci for this species. Preliminary analyses indicate that population substructure may contribute to departures from Hardy-Weinberg equilibrium. In addition, new loci failed to ...

Abstract Coastal forests and wetlands play an important role in supporting biodiversity, protecting the hinterlands shorelines from erosion also contributing to carbon sequestration freshwater storage. To reconstruct late Holocene vegetation environmental dynamics coastal lowlands of northern Iran detect possible climate, human Caspian Sea level fluctuation on ecosystems, multi-proxy analysis w...

Prediction of Coastal Wave Height using Hybrid-Wavelet Methods Artificial Intelligence (Case study: Amirabad Port the Caspian Sea)

conclusions the crude extract of streptomyces sp. acs52 had high antibacterial activity against a wide spectrum of bacteria and could be of interest due to its features such as ability to grow at low temperatures and alkaline ph levels. results streptomyces sp. acs52 is a cold-resistant alkalophilic bacterium strain with antibacterial activity against a broad spectrum of pathogenic bacteria. th...

Forest ecosystems play multiple important roles in meeting the habitat needs of different organisms and providing a variety services to humans. Biodiversity is one structural features dynamic complex forest ecosystems. One most challenging issues assessing understanding relationship between biodiversity environmental factors. The aim this study was investigate effect biotic abiotic factors on t...

Contemporary trends in cultivated land and their influence on soil/gully erosion river suspended sediment load were analyzed by various landscape zones within the most populated agriculturally developed part of European Russia, covering 2,222,390 km2. Based official statistics from Russian Federation former Soviet Union, this study showed that after collapse Union 1991, there was a steady downw...