background: present study was carried out in north of iran to investigate the concentration of mercury (hg) as one of the most toxic metals in tissues of two species of birds. methods: in this study, 15 birds from coot (fulica atra) and 18 birds from cormorant (phalacrocorax carbo) were hunted in anzali and gomishan wetlands. data-analyses carried out using spss software version 17 licenced by ...

background: mercury (hg) is a hazardous metal responsible for environmental contamination and human intoxication. methyl mercury bio-accumulation through food chain can be responsible for chronic mercury exposure of south caspian sea communities with a diet rich in fish. uncertainties about exposure levels that could have damaging consequences for nervous system development of infants makes bio...

background: cancer is a major public health problem in the world. in iran especially after a transition to a dynamic and urban community, the pattern of cancer has changed significantly. an important change occurred regarding the incidence of cancer at the southern shores of the caspian sea, including gilan, mazandaran and golestan province. this study was designed it investigate the epidemiolo...

changes in abundance and biomass of cyanobacteria have been studied in the southern part of the caspian sea (the stretch between tonekabon and amirabad) in four seasons (spring, summer, autumn, winter) in which samples were taken from five depths of 5, 10, 20, 50 and 100 meters in the stations of tonekabon, noushahr, babolsar and amirabad. samples were fixed in formalin (2-2.5%) before transfer...

ebria tripartita (schumann) lemmermann, 1899, a non-photosynthetic flagellate was identified from the southern coast of the caspian sea in december 2012. water temperature at the sampling time was 10 ºc.  the abundance of total phytoplankton cells was 3 × 106 cells.l-1, while e. tripartita with 2 × 10 3 cells. l-1 included 0.75% of phytoplankton community. water quality parameters were recorded...

we measured the impacts of coastal modification on beach erosion and beach retreat conditions, selecting the miankaleh region as an example of a complex high-pressure free zone with high levels of engineering and tourism activity. nine sampling transects, stretching from the shoreline to a 10 meter depth, were defined and 36 sediment samples were collected from the sea bed at depths of 1, 3, 5,...

background: marine products, especially fish, play an increasingly significant role in human diets and health. this research evaluated the concentrations of cadmium, lead, chromium, and nickel in liver and muscle tissues of rutilus frisii kutum along the caspian sea coasts of northern iran. methods: thirty samples of fishes were taken from five stations (astara, rezvanshahr, anazali, ramsar, an...