نتایج جستجو برای: southern caspian sea basin
تعداد نتایج: 292611 فیلتر نتایج به سال:
The present study aimed to survey heavy and toxic metal pollution (lead and cadmium) in the southern Caspian Sea basin through Liza aurata using geographic information system (GIS). Samples of the gill tissue of adult Liza aurata were taken in 10 stations over the southern coast of the Caspian Sea in spring and fall. Interpolation method, Kennedy density function, Moran test, and Gi* index in ...
The invasion of the zebra mussel, Dreissena polymorpha, into North American waters has resulted in profound ecological disturbances and large monetary losses. This study examined the invasion history and patterns of genetic diversity among endemic and invading populations of zebra mussels using DNA sequences from the mitochondrial cytochrome oxidase I (COI) gene. Patterns of haplotype frequency...
The Ponto-Caspian amphipod Obesogammarus obesus (Sars, 1894) was first recorded in the Rhine River near Koblenz, Germany in October 2004. Additional records of small numbers of O. obesus from the same location in 2005 and 2006 indicate that this alien species may have become established in the central section of the Rhine River. Ship transport via the Main-Danube Canal, connecting the Danube ba...
The aim of this study was the identification of morphometric and meristic characters and their diversity between males and females of Alburnus chalcoides in southern coast of the Caspian Sea in 2019. 160 specimens were caught randomly in 8 rivers leading to the Caspian Sea on the coast of Gilan (Anzali Wetland, Sefidrood River Basin, Allah Rud) and Mazandaran (Chalkroud, Cheshmeh Kileh, Mianrou...
Haraz-Ghareh Su is one of the seven sub-basins of the Caspian basin, located on the southern shores of the Caspian Sea, and as such, is in danger of water crisis due to absence of proper systematic policy and strategy. In this study, the pressure factors on the Haraz-Ghareh Su water resources were identified using DPSIR model. Then, the pressure parameters on the freshwater resources in the Cas...
Haraz-Ghareh Su is one of the seven sub-basins of the Caspian basin, located on the southern shores of the Caspian Sea, and as such, is in danger of water crisis due to absence of proper systematic policy and strategy. In this study, the pressure factors on the Haraz-Ghareh Su water resources were identified using DPSIR model. Then, the pressure parameters on the freshwater resources in the Cas...
haraz-ghareh su is one of the seven sub-basins of the caspian basin, located on the southern shores of the caspian sea, and as such, is in danger of water crisis due to absence of proper systematic policy and strategy. in this study, the pressure factors on the haraz-ghareh su water resources were identified using dpsir model. then, the pressure parameters on the freshwater resources in the cas...
The present study was conducted on the comparison of morphometric and meristic factors among Alosa caspia (Eichwald, 1838) populations in the southern Caspian Sea basin. A total of 285 Alosa caspia specimens were caught from three localities, from west to the east of Caspian Sea including Guilan (Bandar Anzali), Mazandaran (Sari) and Golestan (Miankale) provinces. Thirty morphometric and ten me...
The results of this study indicated that the synoptic patterns that lead to heavy rainfall in 22 March 1996, 24 mar 1995 and 17 November 1994 in the northern portion of FARS province includes: the low pressure that located in eastern part of Mediterranean and Black sea and southern part of Caspian Sea that created by trough that located at the middle level of atmosphere. In addition to this low...
in this study, the diversity and distribution of economical bony fishes in less-than-ten-meter depths, cpue and population features such as total length, weight and age were investigated in the southern part of the caspian sea in 1385-6. sampling was done in five regions: amir abad, larim, izdeh, kheyroud, and nashtarood with gilnet in mesh sizes of 26, 33, 40, 60, 100, and 150 mm. in total, 22...
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