Artigo

Influence of topography on the distribution of ground-dwelling ants in an Amazonian forest

In this study we determined the effects of topography on the distribution of ground-dwelling ants in a primary terra-firme forest near Manaus, in central Amazonia. Ants were collected along stream valleys and on forest plateaus by using pitfall traps, sardine baits, and by extracting ants from litte...

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Autor principal: Vasconcelos, Heraldo L.
Outros Autores: Macedo, Antônio Carlos C., Vilhena, José M.S.
Grau: Artigo
Idioma: English
Publicado em: Studies on Neotropical Fauna and Environment 2020
Assuntos:
Formicidae
Invertebrata
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/18969
id oai:repositorio:1-18969
recordtype dspace
spelling oai:repositorio:1-18969 Influence of topography on the distribution of ground-dwelling ants in an Amazonian forest Vasconcelos, Heraldo L. Macedo, Antônio Carlos C. Vilhena, José M.S. Formicidae Invertebrata In this study we determined the effects of topography on the distribution of ground-dwelling ants in a primary terra-firme forest near Manaus, in central Amazonia. Ants were collected along stream valleys and on forest plateaus by using pitfall traps, sardine baits, and by extracting ants from litter samples. Although the number of species per plot (species density) did not differ between different topographic regions, in total, more species were recorded in valleys than on plateaus. Species evenness also tended to be greater in valleys than on plateaus. Dominant species were relatively rare in valleys, possibly because litter, an important food resource and nesting site, was present in smaller quantity in valleys than on plateaus. Ant abundance was about two times greater on plateaus than in valleys, whereas nest densities were nearly three times higher. Part of this difference was attributed to differences in soil texture and vegetation structure associated with topography. Ordination of plots according to ant species composition showed a separation between valley and plateau plots. These results indicate that local topography promotes heterogeneity in species distribution, and explains part of the observed and strong, within-forest variability in the abundance and diversity of ground-dwelling ants. 2020-06-15T22:04:16Z 2020-06-15T22:04:16Z 2003 Artigo https://repositorio.inpa.gov.br/handle/1/18969 10.1076/snfe.38.2.115.15923 en Volume 38, Número 2, Pags. 115-124 Restrito Studies on Neotropical Fauna and Environment
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Formicidae
Invertebrata
spellingShingle Formicidae
Invertebrata
Vasconcelos, Heraldo L.
Influence of topography on the distribution of ground-dwelling ants in an Amazonian forest
topic_facet Formicidae
Invertebrata
description In this study we determined the effects of topography on the distribution of ground-dwelling ants in a primary terra-firme forest near Manaus, in central Amazonia. Ants were collected along stream valleys and on forest plateaus by using pitfall traps, sardine baits, and by extracting ants from litter samples. Although the number of species per plot (species density) did not differ between different topographic regions, in total, more species were recorded in valleys than on plateaus. Species evenness also tended to be greater in valleys than on plateaus. Dominant species were relatively rare in valleys, possibly because litter, an important food resource and nesting site, was present in smaller quantity in valleys than on plateaus. Ant abundance was about two times greater on plateaus than in valleys, whereas nest densities were nearly three times higher. Part of this difference was attributed to differences in soil texture and vegetation structure associated with topography. Ordination of plots according to ant species composition showed a separation between valley and plateau plots. These results indicate that local topography promotes heterogeneity in species distribution, and explains part of the observed and strong, within-forest variability in the abundance and diversity of ground-dwelling ants.
format Artigo
author Vasconcelos, Heraldo L.
author2 Macedo, Antônio Carlos C.
Vilhena, José M.S.
author2Str Macedo, Antônio Carlos C.
Vilhena, José M.S.
title Influence of topography on the distribution of ground-dwelling ants in an Amazonian forest
title_short Influence of topography on the distribution of ground-dwelling ants in an Amazonian forest
title_full Influence of topography on the distribution of ground-dwelling ants in an Amazonian forest
title_fullStr Influence of topography on the distribution of ground-dwelling ants in an Amazonian forest
title_full_unstemmed Influence of topography on the distribution of ground-dwelling ants in an Amazonian forest
title_sort influence of topography on the distribution of ground-dwelling ants in an amazonian forest
publisher Studies on Neotropical Fauna and Environment
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/18969
_version_ 1787142612243709952
score 11.755432

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