Structure of Poduromorpha (Collembola) communities in "restinga" environments in Brazil

Abstract

-The objectives of this work were to evaluate the richness and diversity of the Poduromorpha fauna in two biotopes in Restinga de Maricá, RJ, Brazil, to identify the characteristic species of each biotope and to determine the relationships between the community structure and the abiotic environmental parameters. Representatives of the Poduromorpha (Collembola) order were studied under an ecological viewpoint in halophyte-psammophyte vegetation and foredune zone in preserved areas of Restinga de Maricá, a sand dune environment in the state of Rio de Janeiro, Brazil. The foredune zone showed the highest diversity, richness and equitability of springtail species. Differences in the fundamental, accessory and accidental species in each environment were encountered. Paraxenylla piloua was found to be an indicator species of the halophyte-psammophyte vegetation, while Friesea reducta, Pseudachorutes difficilis and Xenylla maritima were indicators of the foredune zone. The canonical correspondence analysis indicated pH, organic matter content and soil humidity as the most important factors influencing the spatiotemporal distribution of the species.Index terms: bioindicator, ecology, littoral, springtails. Estrutura de comunidades de Poduromorpha (Collembola) em áreas de restingaResumo -Os objetivos deste trabalho foram avaliar a riqueza e a diversidade da fauna de Poduromorpha em dois biótopos na Restinga de Maricá, RJ, identificar as espécies características de cada biótopo e determinar as relações da estrutura da comunidade com parâmetros ambientais abióticos. Representantes da ordem Poduromorpha (Collembola) foram estudados do ponto de vista ecológico nos ambientes de vegetação halófila-psamófila reptante e de primeiro cordão arenoso em áreas preservadas da Restinga de Maricá, localizada no Estado do Rio de Janeiro, Brasil. Os maiores valores de diversidade, riqueza e equitabilidade de espécies de colêmbolos foram observados no ambiente de primeiro cordão arenoso. Foram encontradas diferenças nas espécies fundamentais, acessórias e acidentais nos ambientes amostrados. Paraxenylla piloua atuou como indicadora de ambiente da vegetação halófila-psamófila reptante, ao passo que Friesea reducta, Pseudachorutes difficilis e Xenylla maritima mostraram-se indicadoras de ambiente de primeiro cordão arenoso. A análise de correspondência canônica mostrou que os fatores mais importantes na distribuição espaço-temporal das espécies foram pH, conteúdo de matéria orgânica e umidade do solo.Termos para indexação: bioindicador, ecologia, litoral, colêmbolos.

The springtails (Insecta: Collembola) fauna at different microhabitats of Bečići beach, Montenegro

“…Total number of 6 springtails species was identified: Hypogastrura viatica Tullberg, 1872, H. distincta Axelson, 1902, H. purpurescens Lubbock, 1870, Onychiurus sp., Isotomurus alticolus Handschin, 1919and Sminthurus hispanicus Nayrolles, 1995. Collembolan community was abundant, with the highest diversity, richness and equitability of species from Hypogastrura family that is in compliance with Fernandes et al, (2009) for foredune zone.…”

Diversity of Collembola on Various Post-Rehabilitation Land Covers

“…individuals trap ) and MLC (0.30 ± 0.16 individuals trap ), F = 5.61, p-value = 0.04. Poduromorpha preferred humid habitats with enough food resources (Fernandes et al, 2009;Shayanmehr et al, 2023), and it was provided by GLC and TLC. Meanwhile, MLC had the highest litter water content and humidity, but the litter thickness was the lowest.…”

Epigeal Fauna and Soil Chemical Attributes in Grazing and Regeneration Areas

“…The Entomobryomorpha and Formicidae groups were the most frequent, corresponding to 46% (regeneration area) and 55% (pasture area) of the organisms in the rainy season, respectively (Figure 2). Organisms of the Collembola group (Entomobryomorpha) can be considered biological indicators of disturbance or soil quality (Baretta et al, 2008) because their family diversity and richness are sensitive to anthropogenic interactions and they become more abundant in increased soil organic matter levels (Fernandes et al, 2009). …”