The effect of artisanal gold mining on aquatic insect communities: a case study in Costa Rica

IF 0.5 4区农林科学 Q4 ENTOMOLOGY Aquatic Insects Pub Date : 2021-04-03 DOI:10.1080/01650424.2021.1886308

M. J. Monge-Salazar

引用次数: 2

Abstract

Abstract Among the anthropogenic disturbances that affect rivers, artisanal and small-scale gold mining (ASGM) has recently generated great concern regarding the deterioration of aquatic ecosystems. This study aimed to evaluate the impact of ASGM on the assemblages of aquatic insects. For this, aquatic insects were sampled from two actively mined streams in the Osa Peninsula in Costa Rica. ASGM produces significant changes in the richness, abundance and assemblage’s composition of aquatic insects. These changes, however, are mitigated a few meters downstream, after encountering a seemingly undisturbed tributary, for which the stream seems to keep its stability through resilience. For ASGM activities that have low intensities of extraction and don’t use pollutant chemicals for amalgamation, keeping a low intensity of the activity and a considerable distance between goldmining sites could be an option for a more sustainable development of this activity, since it allows biodiversity to be partially restored.

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手工金矿开采对水生昆虫群落的影响：以哥斯达黎加为例

摘要在影响河流的人为干扰中，个体和小规模金矿开采（ASGM）最近引起了人们对水生生态系统恶化的极大关注。本研究旨在评估ASGM对水生昆虫群落的影响。为此，从哥斯达黎加奥萨半岛两条开采活跃的溪流中采集了水生昆虫样本。ASGM使水生昆虫的丰富度、丰度和群落组成发生了显著变化。然而，在遇到一条看似未受干扰的支流后，这些变化在下游几米处得到了缓解，河流似乎通过恢复力保持了稳定。对于提取强度低且不使用污染化学品进行合并的ASGM活动，保持低强度的活动和金矿点之间的相当大的距离可能是该活动更可持续发展的一种选择，因为这可以部分恢复生物多样性。

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

Aquatic Insects 生物-昆虫学

CiteScore

2.00

自引率

25.00%

发文量

审稿时长

>12 weeks

期刊介绍： Aquatic Insects is an international journal publishing original research on the systematics, biology, and ecology of aquatic and semi-aquatic insects. The subject of the research is aquatic and semi-aquatic insects, comprising taxa of four primary orders, the Ephemeroptera, Odonata, Plecoptera, and Trichoptera but also aquatic and semi-aquatic families of Hemiptera, Coleoptera, and Diptera, as well as specific representatives of Hymenoptera , Lepidoptera, Mecoptera, Megaloptera , and Neuroptera that occur in lotic and lentic habitats during part of their life cycle. Studies on other aquatic Hexapoda (i.e., Collembola) will be only accepted if space permits. Papers on other aquatic Arthropoda (e.g., Crustacea) will not be considered, except for those closely related to aquatic and semi-aquatic insects (e.g., water mites as insect parasites). The topic of the research may include a wide range of biological fields. Taxonomic revisions and descriptions of individual species will be accepted especially if additional information is included on habitat preferences, species co-existing, behavior, phenology, collecting methods, etc., that are of general interest to an international readership. Descriptions based on single specimens are discouraged. Detailed studies on morphology, physiology, behavior, and phenology of aquatic insects in all stadia of their life cycle are welcome as well as the papers with molecular and phylogenetic analyses, especially if they discuss evolutionary processes of the biological, ecological, and faunistic formation of the group.