首页> 外文会议>NATO Advanced Research Workshop on Rescue on Sturgeon Species >THE KEY THREATS TO STURGEONS AND MEASURES FOR THEIR PROTECTIONIN THE LOWER DANUBE REGION
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THE KEY THREATS TO STURGEONS AND MEASURES FOR THEIR PROTECTIONIN THE LOWER DANUBE REGION

机译:鲟鱼的关键威胁和措施在较低的多瑙区保护中的保护

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The six native sturgeon species have been commercially harvested in the DanubeBasin for more than 2,000 years, with rapid decrease in catch by mid 19th century. Addi-tional negative effect on sturgeon populations in the Danube River was river regulation inDjerdap region, due to navigation in the late 19th century, as well as dam construction inthe second half of 20th century that blocked sturgeon spawning migrations. Beside over-fishing and habitat loss, illegal trade, life history characteristics of sturgeon, lack of effectivemanagement (due to lack of transboundary cooperation and change in political situa-tion in Lower Danube Region countries) and pollution all pose serious threats on sturgeonpopulations in Lower Danube Region. International measures established by the Conven-tion on International Trade in Endangered Species (CITES) in late 20th century, listing ofbeluga (Huso huso) as an endangered species under the U.S. Endangered Species Act, aswell as development of Action plan for conservation of sturgeons in the Danube River Basin,had significant impact on activities related to sturgeon protection at beginning of 21stcentury. These actions were aimed towards diminishment of pressure on natural sturgeonpopulations and aquaculture development in countries of Lower Danube Region.
机译:六种本土鲟鱼种类在二瑙巴宾商品中已经在二南巴辛商业收获,超过2000年,在19世纪中期的捕获量迅速下降。在19世纪后期导航,多瑙河鲟鱼的鲟鱼群体的附加负面影响是河律师范常规界地区,以及20世纪下半年的水坝建设,阻止了鲟鱼产卵迁徙。除了过度捕捞和栖息地损失,非法贸易,鲟鱼的生命历史特征,缺乏有效的道德(由于缺乏跨界合作和较低的Danube地区国家的政治出现的变化)和污染所有对鲟鱼的严重威胁较低多瑙河区。 20世纪末濒危物种(CITES)的国际贸易方案建立的国际措施,贝卢巴(HUSO HUSO)列在美国濒危物种法案下,濒临灭绝的物种,作为保护鲟鱼保护行动计划的发展多瑙河流域对21岁时,对与鲟鱼保护有关的活动产生了重大影响。这些行动旨在减少对小多瑙地区各国的天然鲟鱼缺水和水产养殖发展的压力。

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