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Resilience and resistance of zooplankton communities to drought-induced salinity in freshwater and saline lakes of Central Asia

机译:中亚淡水和盐湖中浮游生物群落对干旱引起的盐分的抗逆性

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摘要

Effects of drought-induced salinity changes on aquatic communities are less studied in lentic than in lotic systems. We present changes in zooplankton assemblages from five arid lakes before, during, and after a supra-seasonal drying event in which lake inflow ceased in 2001. We catalogued zooplankton communities in fresh and saline lakes of the Sudochye wetland in Central Asia. During this record low flow period, salinity increased in the lakes. Zooplankton species richness was inversely correlated with salinity. Linear regression using species richness indicated that zooplankton communities in the two least saline lakes were strongly correlated with changes in salinity. Post-drought recovery of species richness suggested resilience to this perturbation. Both saline lakes' zooplankton communities had low correlation with changes in salinity, suggesting greater resistance than the freshwater communities. The fifth lake showed a hybrid response, beginning in the fresh range, but experiencing higher salinities than the other fresh lakes. In the fifth lake species-richness was similarly correlated to changes in salinity as compared to the saline lakes, correlation of % halotolerant species was intermediate between saline and fresh communities, and post-drought species richness was similar to the fresh lakes, which could indicate a "resilient" recovery of species richness. (C) 2017 Elsevier Ltd. All rights reserved.
机译:干旱引起的盐度变化对水生群落的影响在透镜体中的研究少于在抽水系统中。我们介绍了五个季节性季节之前,之中和之后的五个干旱湖泊浮游动物组成的变化,该现象在2001年停止了湖泊的流入。在中亚苏多奇湿地的新鲜和咸水湖中,我们对浮游动物群落进行了分类。在这个创纪录的低流量时期,湖泊中的盐度增加。浮游动物的物种丰富度与盐度成反比。使用物种丰富度的线性回归表明,两个最不盐湖中的浮游动物群落与盐度变化密切相关。干旱后物种丰富度的恢复表明可以抵抗这种扰动。两个盐湖的浮游动物群落与盐度变化的相关性均较低,表明其抵抗力强于淡水群落。第五个湖泊表现出混合反应,从新鲜范围开始,但比其他新鲜湖泊的盐度更高。在第五个湖泊中,与盐湖相比,物种丰富度与盐度变化具有相似的相关性,盐渍物种百分含量的相关性介于盐水和新鲜群落之间,干旱后物种丰富度与新鲜湖泊相似,这表明物种丰富度的“恢复”。 (C)2017 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Journal of arid environments》 |2017年第9期|1-11|共11页
  • 作者单位

    Acad Sci, Inst Water Problems, N Khadjibayev Str 49, Tashkent 100041, Uzbekistan|Inst Sanit Hyg & Profess Dis, Dept Ecol & Hyg Soil & Water, 325 Olthyn Tepa St, Tashkent 100056, Uzbekistan;

    Univ Nevada Reno, Dept Nat Resources & Environm Sci, Mail Stop 186, Reno, NV 89557 USA;

    Univ Nevada Reno, Dept Nat Resources & Environm Sci, Mail Stop 186, Reno, NV 89557 USA|Univ Nevada Reno, Grad Program Hydrol Sci, Mail Stop 186, Reno, NV 89557 USA;

  • 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

    Wetland; Amu Darya delta; Halotolerance; Uzbekistan; Richness;

    机译:湿地;Amu Darya三角洲;耐盐性;乌兹别克斯坦;丰富度;
  • 入库时间 2022-08-17 13:29:58

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