“京津冀最美湿地”新增8种鱼类|无码人妻21p

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  中新网衡水11月26日电 (裴国荣 崔志平 张凯)河北衡水滨湖新区资源保护局26日消息,中国水产科学研究院淡水渔业研究中心近日完成衡水湖2023年—2025年渔业资源专项调查,调查显示,该湖新增8种此前未被记录的鱼类,种类由45种增至53种。

  负责此次调查的中国水产科学研究院淡水渔业研究中心研究员徐东坡称,新增的8种鱼类分别是赤眼鳟、达氏鲌、翘嘴鲌、鮻鱼、青鱼、似鱎、银飘鱼、光泽黄颡鱼,标志着衡水湖渔业资源多样性稳步提升。

  “这些新增鱼类多为中上层鱼类,对水体溶氧量、透明度及饵料资源均有较高要求。”徐东坡说,特别是鮻鱼,其天然栖息地多为咸淡水交汇处,此次在淡水环境的衡水湖发现,直观反映出此间水体环境和生态结构持续向好,是生态改善的重要信号。

  素有“京津冀最美湿地”之称的衡水湖,是华北平原保持沼泽、水域、滩涂、草甸和林地等完整湿地生态系统的国家级自然保护区。截至目前,此间已确认共分布鱼类53种,涵盖7目17科,其中鲤科鱼类占比达56.6%,共计30种。这一物种构成,与北方淡水湖泊鱼类群落的典型特征相吻合。

  河北衡水滨湖新区资源保护局副局长张余广表示,鱼类种类的增加是衡水湖生态保护成效的“活指标”,伴随生态改善,衡水湖观测记录到的鸟类达336种、昆虫757种、植物594种,生物多样性的提升为湿地保护提供了精准的科学依据。(完)

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