Ecological status and problems of the Danube and its fish fauna
نویسنده
چکیده
Large rivers and their riparian zones are hot spots of biodiversity (WARD et al. 1999). Fluvial geomorphic processes provide the habitat diversity and the specific habitat conditions for characteristic species assemblages and result in high levels of habitat diversity, local species richness (α-diversity), and between-habitat differences (beta-diversity) and consequently, overall species richness of a river.
منابع مشابه
Assessment of the Relationship between Fish Distribution and Physicochemical Parameters of Water in Artificial Reefs (Bandar-E-Salakh and Bandar-E-Bostaneh)
Four components were used to identification the effective physical-chemical factors of water on the variations of dominant fish families. The total variation of the variables was concluded 94/17 % and 90/5%, related to the loaded components in artificial reefs of Bandar-E-Salakh and Bandar-E-Bostaneh respectively.Assessment of the loaded factors in each of the components were identified that ni...
متن کاملThe Danube Delta: A natural laboratory for trans-disciplinary education, research, innovation and development
The Danube Delta • A European and global ecological treasure • A rich, diverse flora & fauna • 98% of the European aquatic fauna • 3400 animal species • 160 fish species • 300 bird species – Arctic, Siberian, Mongolian, Chinese, Mediterranean, European • Abundant and diverse natural resources • 1150 plant species • Over 4178 square Km Delta • A Danube Delta Biosphere of 5800 square Km • Signifi...
متن کاملQualitative assessment of Gheshlagh and Gavehrud tributaries in the Javah dam ecosystem based on biological indicators with an emphasis on fish fauna
The current research was conducted in 2021 in 5 stations in order to investigate the quality of water before the operation of Javeh Dam in Kurdistan Province. Sampling of fish and Macrobenthos was done using an electrofishing device and Surber sampler, respectively. A total of 13 fish species were identified, which belonged to 3 families: Cyprinidae, Mastacembelidae and Nemachielidae. Out of th...
متن کاملSpecific composition and morphological peculiarities of endemic monogenean parasites of freshwater fishes of Iran
Result obtained during ten years research work (1990-2000) on distribution of monogenean fauna Iranian fishes indicates that its composition of monogenean fauna of Iranian fishes depends on their habit and since Iran includes three different zoogeographical zones with highly endemic fish hosts, its monogenean parasites have specific composition. The Caspian fauna is characterized by relatively ...
متن کاملSpecific composition and morphological peculiarities of endemic monogenean parasites of freshwater fishes of Iran
Result obtained during ten years research work (1990-2000) on distribution of monogenean fauna Iranian fishes indicates that its composition of monogenean fauna of Iranian fishes depends on their habit and since Iran includes three different zoogeographical zones with highly endemic fish hosts, its monogenean parasites have specific composition. The Caspian fauna is characterized by relatively ...
متن کامل