mercury is the most toxic heavy metal in the aquatic ecosystems which originates both from natural and industrial resources and is ultimately deposited in sediments as methyl mercury. this metal is quickly transferred through the food chain and accumulated in organisms. in this study, the human health risk due to consumption of mullet ( liza aurata ) in the caspian sea, were evaluated by measur...

UNLABELLED • PREMISE OF THE STUDY The Caucasus represents one of the world's biodiversity hotspots and includes the climatic refugia Hyrcan on the southern coast of the Caspian Sea and Colchis on the eastern coast of the Black Sea, where different species survived during the Quaternary climatic oscillations. We evaluated the genetic diversity of the relict tree Zelkova carpinifolia shared bet...

Sediments are integral and inseparable parts of the aquatic environments, so any environmental program concerning water quality would be incomplete without the proper study of its sediments. The elemental concentration of sediments not only depends on anthropogenic and lithogenic sources, but also upon the textural characteristic, organic matter content, mineralogical composition and deposition...

Genetic diversity is a key component of ecosystems. The aim of the present study was to evaluate the genetic diversity of Iranian native honeybee colonies (Apis mellifera meda L.) located in the northern region. Colonies from 24 locations have been analyzed using microsatellite markers. Samples were collected from Caspian Sea southern area (north of Iran). Six microsatellite markers (A28, A29, ...

introduction one of the important events that usually occur in seas and large water bodies’ concurrent with the change of season is the growth and species increase of phytoplankton. in the natural environment, this event does not result in imbalances of water ecosystems. however, pollution caused by human activities results in excessive growth and reproduction of phytoplankton and other opportu...

genetic diversity is a key component of ecosystems. the aim of the present study was to evaluate the genetic diversity of iranian native honeybee colonies (apis mellifera meda l.) located in the northern region. colonies from 24 locations have been analyzed using microsatellite markers. samples were collected from caspian sea southern area (north of iran). six microsatellite markers (a28, a29, ...

the caspian sea as the biggest surrounded water body (lake) in the world is bordered by the states of azerbaijan, russia, iran, kazakhstan and turkmenistan. urban development in addition to the increase of industrial and oil production activities (oil refinery and petrochemical plants) in the northern and eastern regions of caspian sea in recent years have caused entrance of high amount of oily...