土地利用变化推动了亚马逊池塘和溪流中浮游动物生态独特性和物种贡献率的提高

IF 2 3区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Francieli de Fátima Bomfim, Larissa Araújo dos Santos, Ana Paula e Silva da Conceição, Matteus Barbosa Marinho, Thaisa Sala Michelan
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引用次数: 0

摘要

溪流和池塘提供多种生态系统服务,但受到人类活动的威胁。对物种贡献和当地独特性的研究是分析因人类活动而需要保护或恢复的地点的方法。在评估亚马逊环境时,这些指标尤为重要,因为亚马逊环境十分复杂且研究不足。在这项研究中,我们调查了亚马逊河溪流和池塘浮游动物的地方贡献(LCBD)和物种贡献(SCBD)与β多样性和群落属性之间的关系,以及土地利用变化和地方环境因素对 LCBD 的影响(总差异、替代差异和丰富度差异)。此外,我们还研究了是否应考虑对具有生态独特性的地点进行保护或恢复。我们在 2022 年对 42 条溪流和 26 个池塘中的浮游动物、大型水草和物理化学变量进行了采样。我们还通过数字图像处理确定了土地利用和土地覆盖情况,并计算了集水区干扰指数(CDI)。共记录了 130 个分类群,包括 76 个轮虫、41 个桡足类和 13 个桡足类。浮游动物 SCBD 与物种出现率和个体丰度呈正相关,而 LCBD 与丰度和物种丰富度呈负相关。在溪流中,总 LCBD 与 CDI 呈正相关,而与大型浮游植物覆盖率呈负相关;在池塘中,未观察到显著的关系。我们的研究结果提高了人们对土地利用变化对浮游动物贝塔多样性影响的认识,表明土地利用变化较大的地点具有独特而贫乏的物种组成,需要进行恢复。我们的数据还增加了人们对亚马逊环境中浮游动物的了解,尤其是在研究不足的溪流中。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Land use changes drive zooplankton ecological uniqueness and species contributions in Amazon ponds and streams

Land use changes drive zooplankton ecological uniqueness and species contributions in Amazon ponds and streams

Streams and ponds provide several ecosystem services but are threatened by anthropic activities. Studies on species contribution and local uniqueness are ways of analyzing sites that need conservation or restoration due to anthropic activities. These metrics are especially important when evaluating Amazonian environments, which are complex and understudied. In this study, we investigated the relationships between the local contribution (LCBD) and the species contribution (SCBD) to beta diversity and community attributes for zooplankton in Amazonian streams and ponds, and those between the land use change and local environmental factors on the LCBD (total, replacement, and richness difference). Additionally, we investigated whether sites with ecological uniqueness should be considered for conservation or restoration. We sampled zooplankton, macrophytes, and physical–chemical variables in 42 streams and 26 ponds in 2022. We also determined land use and land cover through digital image processing and calculated the Catchment Disturbance Index (CDI). A total of 130 taxa, comprising 76 rotifers, 41 cladocerans, and 13 copepods, were recorded. The zooplankton SCBD was positively correlated with species occurrence and abundance of individuals, while the LCBD was negatively related to abundance and species richness. In streams, total-LCBD was positively related to CDI and negatively related to macrophyte cover; in ponds, no significant relationship was observed. Our results improve current understanding of the effects of land use changes on zooplankton beta diversity, showing that more altered sites have unique and poor species composition and need restoration. Our data also increase knowledge on zooplankton in Amazonian environments, especially in streams that are understudied.

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来源期刊
Aquatic Sciences
Aquatic Sciences 环境科学-海洋与淡水生物学
CiteScore
3.90
自引率
4.20%
发文量
60
审稿时长
1 months
期刊介绍: Aquatic Sciences – Research Across Boundaries publishes original research, overviews, and reviews dealing with aquatic systems (both freshwater and marine systems) and their boundaries, including the impact of human activities on these systems. The coverage ranges from molecular-level mechanistic studies to investigations at the whole ecosystem scale. Aquatic Sciences publishes articles presenting research across disciplinary and environmental boundaries, including studies examining interactions among geological, microbial, biological, chemical, physical, hydrological, and societal processes, as well as studies assessing land-water, air-water, benthic-pelagic, river-ocean, lentic-lotic, and groundwater-surface water interactions.
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