Composition and diversity of benthic macroinvertebrates in a Brazilian Cerrado stream

IF 0.5 4区生物学 Q4 ZOOLOGY

Iheringia Serie Zoologia Pub Date : 2020-01-01 DOI:10.1590/1678-4766e2020016

Jéssica F. G. Pio, E. Santiago, C. E. Copatti

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引用次数: 5

Abstract

ABSTRACT This study aimed to analyse the diversity and composition of benthic macroinvertebrate assemblages in the dry and rainy seasons in a Brazilian Cerrado stream, where it was hypothesized that the dry season has higher diversity and it differs in terms of organism composition in relation to the rainy season. Sampling was carried out in the dry (May and August/2016 and August/2017) and rainy seasons (November/2016 and February and November/2017). Individuals were identified at the family level and classified according to functional feeding group (FFG). There were 3,776 individuals, in which Chironomidae was the most abundant taxon with 2,226 organisms. The FFG with the highest number of individuals and species richness were collector-gatherer and predator, respectively. The species richness was higher in the dry season than in the rainy season. The ordinance generated by NMDS showed that there was no distinction in the composition of the assemblage between the dry and rainy seasons. Seasonal variations do not alter the abundance and composition of the benthic macroinvertebrate assemblage, but the species richness does decrease in rainy seasons.

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巴西塞拉多河中底栖大型无脊椎动物的组成和多样性

摘要:本研究旨在分析巴西塞拉多河干季和雨季底栖大型无脊椎动物群落的多样性和组成，并假设干季具有更高的多样性，并且在生物组成方面与雨季不同。取样时间为旱季(2016年5月和8月以及2017年8月)和雨季(2016年11月以及2017年2月和11月)。在家庭水平上对个体进行鉴定，并按功能喂养组(FFG)进行分类。共有3776只，其中手蚊科数量最多，有2226只。个体数量和物种丰富度最高的FFG分别为采集型和捕食型;物种丰富度在旱季高于雨季。NMDS生成的条例显示，旱季和雨季的组合成分没有区别。季节变化不会改变底栖大型无脊椎动物群落的丰度和组成，但物种丰富度在雨季确实减少。

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来源期刊

Iheringia Serie Zoologia 生物-动物学

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal Iheringia, Série Zoologia, edited by the “Museu de Ciências Naturais” of the “Fundação Zoobotânica do Rio Grande do Sul”, publishes original research findings in zoology with emphasis on taxonomy, systematics, morphology, natural history, and community or population ecology of species from current Neotropical fauna. Scientific notes will not be accepted for publication. Species lists without a taxonomic approach, or that are not the result of studies on the ecology or natural history of communities will not normally be accepted. The same applies to identification keys of groups of taxa defined by political boundaries. Authors wishing to inquire about the scope of the journal or the suitability of a particular topic are encouraged to contact the Editorial Board prior to submission. Furthermore, articles with a main focus on agronomy, veterinary, zootechny or other areas involving applied zoology will not be accepted. Its abbreviated title is Iheringia, Sér. Zool., which should be used in bibliographies, footnotes and bibliographical references and strips.