نتایج جستجو برای: coastal environment
تعداد نتایج: 567515 فیلتر نتایج به سال:
the “driving force - pressure - state - impact – response” modeling framework isadopted to consider the formation mechanisms of environmental risks and the requirements ofecological environment protection. moreover, a systematical index system and evaluation model forthe measurement of the coastal ecological security level is put forward in this paper to assess thestate of coastal ecological en...
bahrakan region is one of the four important and major areas of oil and economy in the persian gulf. the aim of this study was to evaluate the use of meiofauna as bioindicator of environmental pollution and the influence of organic contaminants on variation of meiofauna. sampling has done from 9 stations in three transects perpendicular to the intertidal shoreline, in the cold season (winter 20...
identification and enumeration of phytoplankton species from ilaje and lagos sectors of the nigerian coastal waters were conducted using standard procedures. effects of different crude oil concentrations (6 to 50 ppm) on population of coscnodiscus centralis, thalassionema frauenfeldii, odontella mobiliensis, and ceratium trichoceros at different exposure periods (6 to 42 h) via microcosm experi...
The coastal marine environment of Japan is characterized by its high biological productivity, which contributes to generally high fishery yields. However, both the productivity of coastal ecosystems and coastal fisheries are being threatened by substantial changes in the coastal marine environment. This situation is making it increasingly imperative to take an ecosystems approach to management ...
A review of environment problems in the coastal sea of South China Qiuying Han a , Xiaoping Huang b , Qianguo Xing a & Ping Shi a a Key Laboratory of Coastal Zone Environment Processes, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Coastal Zone Environment Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, P.R. China b LED, So...
coastal zone of sri lanka is a key to sustainable development of the country. the erosion of country’s coastal zone has been identified as a long standing problem. therefore, coastal sediment dynamics around the country has to be identified to develop an appropriate coastal zone management plan. remote sensing and gis techniques can be used for quantitative and qualitative analyses of coastal p...
We discuss in this paper environmental changes along the coastal line of Nigeria, especially in the region around Lagos, basing on provisional multi-disciplinary analyses of meteorological and maritime observations. The study has revealed that the environmental change in the Nigerian coastal region has been much more apparent than before (i.e. some few years back 1989-2007). Various kinds of oc...
despite the fact that coastal areas are benefiting from verity of biological resources of marine and inland systems, they are exposed to destructive threats from both systems. hence, coastal areas are the most vulnerable sectors in the world. population growth, tourism, urbanization, and industrialization are the most important factors in increasing pressure on the coastal and marine areas. ide...
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