The drift effect on nestedness of ephemeroptera, trichoptera and plecoptera orders in the Xingu River

IF 1 4区环境科学与生态学 Q3 BIODIVERSITY CONSERVATION

Biota Neotropica Pub Date : 2023-03-31 DOI:10.1590/1676-0611-bn-2022-1354

Thayara Belo Leal, Rory Senna Oliveira, T. Giarrizzo, B. Godoy

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引用次数: 1

Abstract

Abstract The drift movement consists of the displacement of the organisms inside the water column which allows its passive locomotion. This movement will result in a variation of the communities of organisms along the river, generating spatial patterns. Based on this, we tested the hypotheses a) the drift of individuals in an upstream-downstream direction creates a nestedness pattern, when the upstream is a subset of downstream communities of aquatic insects; b) there will be an increase in the number of individuals and genera as we approach the most downstream point. The present study was carried out in seven sampling points distributed along the Xingu River. The sampling occurred at night in the central area of the river. The number of genera along the river remained constant, and the nestedness distribution of the communities in the upstream-downstream gradient was not observed. Based on the results, it is possible to visualize a turnover of genera in the longitudinal gradient of the river, but with an accumulation of genera in the downstream region. Organisms that are transported by the flow of the water current respond to the characteristics of the body of water by adapting to the type of environment in which they are found.

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漂流对新谷河中蜉蝣目、翅翅目和翅翅目蚁巢性的影响

摘要漂移运动是由水体内生物的位移构成的，它允许生物被动运动。这种运动将导致沿河生物群落的变化，从而产生空间格局。在此基础上，我们验证了以下假设:a)当上游是下游水生昆虫群落的一个子集时，个体在上游-下游方向的漂移产生了一种筑巢模式;B)当我们接近最下游的点时，个体和属的数量会增加。本研究在沿新谷河分布的7个采样点进行。采样是在夜间在河的中心区域进行的。沿河流的属数保持不变，群落在上下游梯度上的巢性分布没有变化。基于这些结果，可以想象在河流的纵向梯度上有一个属的周转，但在下游地区有一个属的积累。被水流运输的生物通过适应它们所处的环境类型来对水体的特征做出反应。

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

Biota Neotropica BIODIVERSITY CONSERVATION-

CiteScore

2.90

自引率

16.70%

发文量

审稿时长

4-8 weeks

期刊介绍： BIOTA NEOTROPICA is an electronic, peer-reviewed journal edited by the Program BIOTA/FAPESP: The Virtual Institute of Biodiversity. This journal"s aim is to disseminate the results of original research work, associated or not to the program, concerned with characterization, conservation and sustainable use of biodiversity within the Neotropical region. Manuscripts are considered on the understanding that their content has not appeared, or will not be submitted, elsewhere in substantially the same form, because once published their copyrights are transferred to BIOTA NEOTROPICA as established in the Copyright Transfer Agreement signed by the author(s).