نتایج جستجو برای: caspian pollution
تعداد نتایج: 73457 فیلتر نتایج به سال:
one of the indicators of management and sustainability control of forest resources is the definition deforestation and degradation types. these factors hazard quantitative and qualitative of the iranian forests. in this study with integrated approach, different forms of forest degradation identified in the forest areas with a reviews of library resources and then investigation the degree of sta...
Information obtained as a result of monitoring water bodies is taken basis for legal regulation economic activities related to environmental pollution. In the context globalized economy, strengthening protection measures in one neighboring countries often leads fact that next plant will be built across border, and its impact on environment global scale same. this study, authors studied problem ...
Caspian kutum, Rutilus frisii Kamensky 1901, is a commercially important fish species in the southern part of the Caspian Sea. All of the metal entered in the Caspian Sea. The pollution of this metal cause To create environmental problem. To address the issue, some 51 R. frisii specimens were caught at five different fishing regions (including Astara, Anzali, Kiashahr,) of the southern shorelin...
twenty water samples from a river system in southern caspian sea basin werecollected and analyzed for physicochemical parameters and metals (cu, zn, as, cd, pb, ni andmn). in order to evaluate the risk potential of metal pollution in river water, use of two indicesnamely heavy metal pollution index (hpi) and contamination index (cd) accompanied by clusteranalysis was taken in to consideration. ...
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...
Background and purpose: Today, environmental pollution, especially pollution of aquatic ecosystems, humans and other organisms are faced with serious problems. Endocrine disrupting chemicals are one group of chemical compounds that are important because of their significant adverse effects in humans and animals. Therefore, this study aimed to determine the concentration of 4-Nonylphenol, Bisphe...
Recently, several studies indicated that species from the Ponto-Caspian region may be evolutionarily predisposed to become nonindigenous species (NIS); however, origin of NIS established in different regions has rarely been compared to confirm these statements. More importantly, if species from certain area/s are proven to be better colonizers, management strategies to control transport vectors...
We describe here the first fossil otoliths from the Middle Miocene (Badenian and Sarmatian) of Belgrade, Serbia. They were obtained from Lower Badenian outcrops at Slanci and from upper Badenian and Sarmatian sediments recovered from four shallow wells near the village of Barajevo. The otoliths from the Lower Badenian of Slanci represent fishes typical for an open marine environment, characteri...
In the present study, the fishing status and production of caviar from wild sturgeon as well as the stocks rehabilitation of these species in the Caspian Sea have been analyzed over the past few years. Unfortunately, due to certain reasons such as overfishing and poaching, destruction of spawning areas and natural habitats, environmental pollution and reduced the number of released juveniles st...
A negotiation support system for resolving an international trans-boundary natural resource conflict
Post-Soviet legal governance regime of Caspian Sea e the largest inland body of water on earth e remains a source of conflict among the five coastal states of Azerbaijan, Iran, Kazakhstan, Russia, and Turkmenistan. Although different division methods have been suggested for sharing the sea and its valuable resources, the actual gain of the countries is unclear as the proposed methods focus eith...
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