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首页> 外文期刊>Aquatic Sciences >Floods homogenize aquatic communities across time but not across space in a Neotropical floodplain
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Floods homogenize aquatic communities across time but not across space in a Neotropical floodplain

机译：跨越水生社区的洪水，但在新洪泛平原中没有空间

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摘要

A pattern of increasing similarity among ecological communities in space or time is usually a consequence of anthropogenic pressures. However, natural causes such as flood pulse may also increase spatial similarity among lakes or temporal similarity within a lake. We assessed whether floods homogenize zooplankton and macrophyte assemblages in space and time using a 16 years data set obtained in six lakes in the Upper Parana River floodplain. The spatial changes in beta diversity were tested by comparing assemblages in pairs of lakes located close to each other, while the temporal changes in beta diversity were tested by comparing assemblages of the same lake over time. We did not find lower spatial beta diversity for macrophytes or zooplankton during floods. In contrast, we found lower temporal beta diversity for aquatic macrophytes and littoral zooplankton among flood events. We did find the re-colonization of a similar set of species at each flood event as opposed to drought events for littoral species. On the other hand, for pelagic zooplankton, a diverse regional species pool and the arrival of zooplankton from littoral zones probably resulted in stochastic colonization in the different lakes, and thus less similar community composition during floods. We highlight the importance of explore simultaneously spatial and temporal beta diversities in complex and dynamic ecosystems such as floodplains, because the same event (i.e., flood or drought) may drive different community patterns across space or time.
机译：在空间或时间的生态社区之间增加相似性的模式通常是人为压力的结果。然而，洪水脉冲等自然原因也可能增加湖泊内的湖泊或时间相似性的空间相似度。我们评估了在上部ParaNa河洪泛区中六湖中获得的16年数据集，在空间和时间均匀化Zooplankton和Macrophyte组装的洪水。通过比较彼此靠近的湖泊成对的湖泊的组装来测试β多样性的空间变化，而通过比较同一湖的组装随着时间的推移来测试β多样性的时间变化。在洪水期间，我们没有发现宏观物质或浮游动物的空间β多样性。相比之下，我们发现洪水事件中水生型肺炎和浮游生浮游车的较低时间β多样性。我们确实在每个洪水事件中找到了类似种类类似的物种的重新定位，而不是沿着沿海物种的干旱事件。另一方面，对于Pelagic Zooplankton，各种区域物种池和浮游动物到达沿海地区的到来可能导致不同湖泊的随机殖民化，因此在洪水期间的社区组成较差。我们突出了探索同时空间和时间β多样性的重要性和动态生态系统（如泛洪平），因为相同的事件（即洪水或干旱）可能会跨空间或时间推动不同的社区模式。

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  • 来源
    《Aquatic Sciences》 |2021年第1期|19.1-19.11|共11页
  • 作者

    Petsch Danielle Katharine; Cottenie Karl; Padial Andre Andrian; Dias Juliana Deo; Bonecker Claudia Costa; Thomaz Sidinei Magela; Melo Adriano Sanches;

  • 作者单位

    Univ Fed Goias Programa Posgrad Ecol & Evolucao Goiania Go Brazil|Univ Estadual Maringa Programa Posgrad Ecol Ambientes Aquat Continentai Maringa Parana Brazil;

    Univ Guelph Dept Integrat Biol Guelph ON Canada;

    Univ Estadual Maringa Programa Posgrad Ecol Ambientes Aquat Continentai Maringa Parana Brazil|Univ Fed Parana Lab Anal & Sintese Biodiversidade Programa Posgrad Ecol & Conservacao Programa Posgrad Bot Curitiba Parana Brazil;

    Univ Fed Rio Grande do Norte Dept Oceanog & Limnol Natal RN Brazil;

    Univ Estadual Maringa Programa Posgrad Ecol Ambientes Aquat Continentai Maringa Parana Brazil|Univ Estadual Maringa Nucleo Pesquisas Limnol Ictiol & Aquicultura Nupe Maringa Parana Brazil;

    Univ Estadual Maringa Programa Posgrad Ecol Ambientes Aquat Continentai Maringa Parana Brazil|Univ Estadual Maringa Nucleo Pesquisas Limnol Ictiol & Aquicultura Nupe Maringa Parana Brazil;

    Univ Fed Goas Dept Ecol ICB Goiania Go Brazil|Univ Fed Rio Grande do Sul Dept Ecol IB Porto Alegre RS Brazil;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Beta diversity; Macrophytes; Zooplankton; Flood pulse;

    机译：β多样性;宏观物质;浮游动物;洪水脉冲;

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