Can nesting waterbirds influence the community structure of macroinvertebrates in southern Brazilian intermittent wetlands?

IF 0.5 4区生物学 Q4 ZOOLOGY

Iheringia Serie Zoologia Pub Date : 2020-01-01 DOI:10.1590/1678-4766e2020015

Daniela C. Zardo, M. Souza, M. M. Pires, C. Stenert, L. Maltchik

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引用次数: 1

Abstract

ABSTRACT The main goal of this study was to test the effect of the presence of nesting waterbirds on the taxonomic structure (richness, abundance and composition) of macroinvertebrate communities in southern Brazilian wetlands. Macroinvertebrate communities were seasonally sampled in eight intermittent wetlands differing according to the occurrence of nesting colonies of waterbirds (four with the presence of rookeries; four without). The influence of nutrients and water and sediment physicochemical variables on macroinvertebrate communities was also assessed. The community structure of aquatic macroinvertebrates was not affected by the presence of colonies of nesting waterbirds. Rather, macroinvertebrate communities varied seasonally and they were influenced by water-level environmental variables. Richness and composition changed among seasons and were influenced by nutrients and water physicochemical variables. Water turbidity and total dissolved solids influenced macroinvertebrate richness, while water nutrients affected macroinvertebrate abundance. Our results indicate that the lack of effect of nesting waterbirds on macroinvertebrates is possibly due to the variation in the composition of avian species and their reduced population sizes, and in such cases, any effects of birds on macroinvertebrates can be overridden by water chemistry and seasonal changes in intermittent wetlands.

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筑巢的水鸟会影响巴西南部间歇性湿地大型无脊椎动物的群落结构吗?

摘要本研究的主要目的是测试筑巢水鸟的存在对巴西南部湿地大型无脊椎动物群落的分类结构(丰富度、丰度和组成)的影响。大型无脊椎动物群落在8个间歇湿地进行季节性采样，根据水鸟筑巢群落的发生情况而有所不同(4个湿地有繁殖地;四个没有)。还评估了营养物、水和沉积物理化变量对大型无脊椎动物群落的影响。水生大型无脊椎动物的群落结构不受筑巢水鸟群落的影响。相反，大型无脊椎动物群落随季节变化，并受水位环境变量的影响。丰富度和组成随季节变化，受养分和水分理化变量的影响。水体浊度和总溶解固形物影响大型无脊椎动物丰富度，水体养分影响大型无脊椎动物丰富度。研究结果表明，筑巢水鸟对大型无脊椎动物的影响不足可能是由于鸟类组成的变化和种群规模的减少，在这种情况下，鸟类对大型无脊椎动物的影响可能被间歇性湿地的水化学和季节变化所覆盖。

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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.