fish species diversity, distribution and abundance were studied in the sardabrud and chalus rivers, in the southern caspian sea basin, during 1992 and 1993 in five and four stations respectively, by monthly collections using electrofishing device. in total, 3200 fish specimens, including 15 species in sardabrud river and 12 species in chalus river, were investigated. the fish comprised of 13 ge...

the coastal areas are highly productive system that is degrading due to receiving huge amount of various pollutants. despite of the important of north caspian sea estuaries the quality index of benthic fauna received less attention. in this survey the benthic population of 18 rivers estuaries in southern caspian sea were investigated. the benthic sampling and identification were conducted at ei...

there are a number of ideas to generate cloud and precipitation in the southern coasts of caspian sea, but none of them explain the cause of precipitation particularly heavy and super heavy precipitations precisely. this study describes main thermodynamic factors when the situation and location of synoptic patterns are effective. on the basis of daily data, monthly regimes and monthly trends of...

seasonal variations of the seawater properties (e.g. temperature, salinity, density and chlorophyll-a) in western part of the southern coastal waters of the caspian sea near the iranian coast were studied. a portable ctd probe was applied for profiling from sea surface to bottom at 23 stations. maximum depth of the profiling stations was more than 470 m in the study area. vertical structure of ...

The Caspian Sea is the world’s largest inland sea. Physiographically it is unique. It is the most productive body of water in the world1 and the only one that preserves the geno-fund of the sturgeon, the source of almost all the black caviar produced. About 10 million people live around the Caspian Sea and the occupations of many of them are connected with the sea, and first of all with fishing...

introduction the dynamic state index (dsi) is being introduced on the basis of a newly developed theory termed the energy-vorticity theory (evt). as a weather index, the dsi can describe the temporal sequence and intensity of areas of high and low pressure; but as a climate index, it can also diagnose climate change based on the variation in solar radiation or the influences of friction. in phy...

population of vimba vimba persa was investigated using microsatellite markers originated from two regions along the iranian coastline of southern caspian sea (anzali lagoon and havigh river in gilan province). totally 153 alleles were identified. the highest number of alleles per ca3 loci was 17 and the lowest 3 in z8145 loci with means of 7.6. observed and expected heterozygosity averages were...

It is a known fact that, world wide, there are more than 200 international water systems and that some 60 per cent of the global population resides within such systems. This has important implications for international security of these water systems and the people dependent on them. With this in mind, the United Nations University (UNU), within the framework of the environmentally sustainable ...