aim: this study was conducted to investigate the accumulation of three heavy metals including lead, tin and zinc in the liver and muscle tissues of 60 silver carp (hypophthalmichthys molitrix) collected from different stations of the anzali wetland (located at the west south of caspian sea): pirbazar, anzali, khazarvila, beshman, sangachin and abkenar, in april 2011. materials and methods: samp...

As an “international aquatic ecosystem” in Northern Iran, the Anzali wetland is a nursery for fish and breeding wintering area wide variety of waterfowl. The threatened by human activities (deforestation, hunting, tourism, urbanization), leading to habitat destruction, eutrophication, sediment accumulation. To stop degradation set up effective protection restoration line with Sustainable Develo...

The genetic variation and population structure of narrow-clawed crayfish (Astacus leptodactylus) was examined by means of polymerase chain reaction (PC R) restriction fragment length polymorphism (RF LP) analysis of the cytochrome oxidase subunit I (COI) of mitochondrial DNA. A total of 194 adult specimens were collected from seven sample sites including, two in the south Caspian Sea and one ea...

This paper introduces a mixed integer programming model to find the optimum development plan for port Anzali. The model minimizes total system costs taking into account both port infrastructure costs and shipping costs. Due to the multipurpose function of the port, the model consists of 1020 decision variables and 2490 constraints. Results of the model determine the optimum number of berths tha...

Oligochaeta worms are important organisms in aquatic ecosystem. Their omnipresence makes them as an indicator of environmental changes and health of aquatic ecosystem. The members of the family Tubificidae and in particular, genus Limnodrilus are considered as the most tolerant oligochaets to aquatic pollution. Therefore identification and biological characteristics of this taxon are of great h...

This study focuses on the pollutants from urban runoff to Zarjoob River, which is one of rivers leading Anzali International Wetland, was listed in Montreux Record 1993 as a site need priority conservation. Storm water residential area Rasht (the largest city Iran’s Caspian Sea coast) monitored this during thirteen rainfall events, with total 58 storm samples collected 2018 2019. In most mean c...