长期干旱改变了永久性湖泊和临时性湖泊浮游动物休眠卵的孵化模式

IF 2.8 2区生物学 Q2 ECOLOGY

Freshwater Biology Pub Date : 2024-03-13 DOI:10.1111/fwb.14234

Anderson L. Vargas, Thamires Brazil, Jayme M. Santangelo, Reinaldo L. Bozelli

引用次数: 0

摘要

栖息在永久性和临时性湖泊中的浮游动物通常会产休眠卵。虽然休眠卵被认为可以在不同的恶劣条件下存活，但干燥对休眠卵的存活率和孵化模式的影响尚不完全清楚，而且可能取决于具体情况。本研究在源于永久性湖泊和临时性湖泊的潮湿沉积物中模拟了一次长期（1年）的干燥过程，并通过原位实验比较了孵化模式。与潮湿沉积物相比，干燥沉积物中孵化幼体的数量和物种丰富度都有所下降。各类湖泊的干湿沉积物中孵出的幼体组成各不相同，而临时湖泊的干湿沉积物中的群落变异性则没有差异。总体而言，轮虫和甲壳类应对干燥的能力没有差异，因为所有物种在干燥后孵化的幼体数量都会减少。蒿属是唯一从干燥的沉积物中获益的类群。长期干燥可能会影响休眠卵库对水体中未来活跃种群的贡献，即使在临时栖息地也是如此，因为临时栖息地可能会选择耐旱的休眠卵。由于干旱在全球范围内变得越来越普遍，即使是在以前的永久性水生生境中，休眠卵库所发挥的生态作用也可能正在减弱。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Freshwater Biology 生物-海洋与淡水生物学

CiteScore

5.90

自引率

3.70%

发文量

162

审稿时长

2 months

期刊介绍： Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.