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首页> 外文期刊>Southeastern naturalist >Historical vs. current biological assemblages in the little choctawhatchee watershed, Southeastern AL
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Historical vs. current biological assemblages in the little choctawhatchee watershed, Southeastern AL

机译：阿拉巴马州东南部小choctawhatchee流域的历史与当前生物组合

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The Little Choctawhatchee River watershed is currently affected by effluents from wastewater treatment plants and may be subject to impoundment as a water supply reservoir. We used historical data from the literature and the results of recent surveys (2006-2008) to assess past and current patterns of the diversity of mussels, crayfishes, and fishes throughout the river basin in order to gain information about the past and potential future effects of degraded water and habitat quality to the fauna of this region. Our results suggest that mussel assemblages have declined dramatically from historical levels, with only three of the eleven historically recorded species found. Several statelisted mussel species and candidates for federal protection formerly present are now believed extirpated from the watershed. Fish and crayfish collections during 2006-2008 were more diverse (52 and 6 species) than historical records indicated (39 and 3 species). This increased diversity was probably due to a more concentrated sampling effort in the current study than in the past. Future impoundment may cause further and possibly drastic changes to the remaining freshwater faunal diversity.
机译：目前，Little Choctawhatchee河流域受到废水处理厂排放的废水的影响，可能会作为水库蓄水。我们使用文献中的历史数据和最近的调查结果（2006-2008年）来评估整个流域中贻贝，小龙虾和鱼类多样性的过去和当前模式，以便获得有关过去和未来潜在影响的信息水和栖息地质量下降对该地区动物的影响。我们的结果表明，贻贝的组合已大大超过历史水平，发现了11种历史记录物种中的3种。现在，人们认为该流域已经灭绝了几种列入国家名录的贻贝物种，以及以前曾存在的联邦保护候选人。 2006-2008年间鱼类和小龙虾的收藏（52种和6种）比历史记录所表明的（39种和3种）更加多样化。多样性的增加可能是由于当前研究比以往更加集中的采样工作。将来的蓄水可能对剩余的淡水动物群多样性造成进一步甚至可能的巨大变化。

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