Artigo

Forest fragmentation in central Amazonia and its effects on litter-dwelling ants

We assessed responses of ants nesting in twigs in the litter layer to habitat changes associated with forest fragmentation in central Amazonia. Ants were collected along transects located at nine distances (5, 20, 40, 60, 100, 200, 300, 400, 500 m) from the edges of two isolated 100-ha fragments and...

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Autor principal: Carvalho, Karine Santana
Outros Autores: Vasconcelos, Heraldo L.
Grau: Artigo
Idioma: English
Publicado em: Biological Conservation 2020
Assuntos:
Ant
Community Response
Edge Effect
Habitat Fragmentation
Isolation Effect
Leaf Litter
Rainforest
South America
Formicidae
Hymenoptera
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/19194
id oai:repositorio:1-19194
recordtype dspace
spelling oai:repositorio:1-19194 Forest fragmentation in central Amazonia and its effects on litter-dwelling ants Carvalho, Karine Santana Vasconcelos, Heraldo L. Ant Community Response Edge Effect Habitat Fragmentation Isolation Effect Leaf Litter Rainforest South America Formicidae Hymenoptera We assessed responses of ants nesting in twigs in the litter layer to habitat changes associated with forest fragmentation in central Amazonia. Ants were collected along transects located at nine distances (5, 20, 40, 60, 100, 200, 300, 400, 500 m) from the edges of two isolated 100-ha fragments and two continuous-forest sites. In total, 2880 m2 of litter were examined for the presence of ant colonies. We detected a significant decrease in litter depth with increasing distance to forest edge, and an increase and then decrease in the average diameter-at-breast-height (DBH) of large trees (DBH ≥ 10 cm), and in tree basal area. Distance to forest edge significantly affected ant species composition and this effect was partly attributable to variation in litter depth. With the exception of one fragment, no significant changes in ant nest densities or species richness were found with increasing distance to forest edge. However, species richness of ants was greater in continuous forest than in both fragments. Furthermore, most species (65.8%) had great nest densities in continuous forest. These results suggest that edge and isolation effects both play a role in structuring litter-dwelling ant communities in Amazonian forest remnants. 2020-06-15T22:06:12Z 2020-06-15T22:06:12Z 1999 Artigo https://repositorio.inpa.gov.br/handle/1/19194 10.1016/S0006-3207(99)00079-8 en Volume 91, Número 2-3, Pags. 151-157 Restrito Biological Conservation
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Ant
Community Response
Edge Effect
Habitat Fragmentation
Isolation Effect
Leaf Litter
Rainforest
South America
Formicidae
Hymenoptera
spellingShingle Ant
Community Response
Edge Effect
Habitat Fragmentation
Isolation Effect
Leaf Litter
Rainforest
South America
Formicidae
Hymenoptera
Carvalho, Karine Santana
Forest fragmentation in central Amazonia and its effects on litter-dwelling ants
topic_facet Ant
Community Response
Edge Effect
Habitat Fragmentation
Isolation Effect
Leaf Litter
Rainforest
South America
Formicidae
Hymenoptera
description We assessed responses of ants nesting in twigs in the litter layer to habitat changes associated with forest fragmentation in central Amazonia. Ants were collected along transects located at nine distances (5, 20, 40, 60, 100, 200, 300, 400, 500 m) from the edges of two isolated 100-ha fragments and two continuous-forest sites. In total, 2880 m2 of litter were examined for the presence of ant colonies. We detected a significant decrease in litter depth with increasing distance to forest edge, and an increase and then decrease in the average diameter-at-breast-height (DBH) of large trees (DBH ≥ 10 cm), and in tree basal area. Distance to forest edge significantly affected ant species composition and this effect was partly attributable to variation in litter depth. With the exception of one fragment, no significant changes in ant nest densities or species richness were found with increasing distance to forest edge. However, species richness of ants was greater in continuous forest than in both fragments. Furthermore, most species (65.8%) had great nest densities in continuous forest. These results suggest that edge and isolation effects both play a role in structuring litter-dwelling ant communities in Amazonian forest remnants.
format Artigo
author Carvalho, Karine Santana
author2 Vasconcelos, Heraldo L.
author2Str Vasconcelos, Heraldo L.
title Forest fragmentation in central Amazonia and its effects on litter-dwelling ants
title_short Forest fragmentation in central Amazonia and its effects on litter-dwelling ants
title_full Forest fragmentation in central Amazonia and its effects on litter-dwelling ants
title_fullStr Forest fragmentation in central Amazonia and its effects on litter-dwelling ants
title_full_unstemmed Forest fragmentation in central Amazonia and its effects on litter-dwelling ants
title_sort forest fragmentation in central amazonia and its effects on litter-dwelling ants
publisher Biological Conservation
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/19194
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score 11.653393

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