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Diversity and Distribution of Ephemeroptera and Trichoptera in Southern Brazil Wetlands

机译:巴西南部湿地的前翅目和赤翅目的多样性和分布

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摘要

Ephemeroptera and Trichoptera larvae are important components of freshwater benthic communities. However, the environmental factors that determine Ephemeroptera and Trichoptera diversity and distribution in wetland systems of the Neotropical region are not well known. The objectives of this study were to: 1) conduct a diversity survey of mayflies and caddisflies in 140 wetlands in an extensive area of the Neotropical region (~220,000 km~2, southern Brazil), and 2) determine how much variation in mayfly and caddisfly richness and composition is explained by wetland area, altitude, hydroperiod, aquatic vegetation and water conductivity. A total of 5207 individuals distributed among 16 genera of Trichoptera and Ephemeroptera were collected in the studied wetlands. The mayflies were represented by eight genera, and comprised 94.6% of the collected individuals. The richness of Ephemeroptera and Trichoptera was similar between permanent and intermittent wetlands, and it did not differ significantly between aquatic bed and emergent wetlands. However, the density was higher in permanent than in intermittent wetlands, and it was higher in aquatic bed than in emergent wetlands. While the richness and density were negatively associated with altitude and water conductivity, the composition was associated with wetland area and altitude. In terms of the conservation, there is a need to promote conservation of all wetland systems in southern Brazil, regardless of their area and altitude. These arguments are essential to develop conservation and management programs of wetlands in this region.
机译:鳞翅目和赤翅目幼虫是淡水底栖生物群落的重要组成部分。然而,决定新热带地区湿地系统中星翅目和毛翅目多样性和分布的环境因素尚不清楚。这项研究的目的是:1)在新热带地区广阔的地区(巴西南部〜220,000 km〜2)的140个湿地中对may蝇和虫进行多样性调查,以及2)确定may蝇和and蝇的变异程度。 cad蝇的丰富度和组成由湿地面积,海拔高度,水周期,水生植被和水的电导率来解释。在研究的湿地中,总共有5207个个体分布在直翅目和and翅目的16个属中。 may由八属组成,占收集个体的94.6%。在永久性和间歇性湿地之间,星翅目和毛翅目的丰富度相似,而水生床和紧急湿地之间的显着差异不大。但是,永久性湿地的密度高于间歇性湿地的密度,水生床的密度比新兴湿地的密度高。丰富度和密度与海拔和水的电导率呈负相关,而其组成与湿地面积和海拔相关。在保护方面,有必要促进巴西南部所有湿地系统的保护,无论其面积和高度如何。这些论点对于制定该地区的湿地保护和管理计划至关重要。

著录项

  • 来源
    《Journal of the Kansas Entomological Society》 |2009年第2期|p.160-173|共14页
  • 作者单位

    Laboratório de Ecologia e Conservação de Ecossistemas Aquáticos, Universidade do Vale do Rio dos Sinos, UNISINOS, Av. Unisinos, 950, CEP 93022-000, São Leopoldo, Rio Grande do Sul, Brasil;

    Laboratório de Ecologia e Conservação de Ecossistemas Aquáticos, Universidade do Vale do Rio dos Sinos, UNISINOS, Av. Unisinos, 950, CEP 93022-000, São Leopoldo, Rio Grande do Sul, Brasil;

    Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USP, Av.Bandeirantes, 3900, CEP: 14040-901, Ribeirão Preto, SP, Brasil;

    Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, USP, Av.Bandeirantes, 3900, CEP: 14040-901, Ribeirão Preto, SP, Brasil;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    macroinvertebrate; biodiversity; lakes; neotropical region;

    机译:大型无脊椎动物生物多样性;湖泊新热带地区;
  • 入库时间 2022-08-17 23:36:56

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