Diet and prey availability of terrestrial insectivorous birds prone to extinction in Amazonian forest fragments
This study compared niche breath, prey size, and diet variability in two pairs of sympatric species of terrestrial insectivorous birds, each pair containing one species that can persist in small forest fragments and one that does not. The pairs were Myrmeciza ferruginea and Sclerurus rufigularis; an...
| Autor principal: | Mestre, Luiz Augusto Macedo |
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| Outros Autores: | Cohn-Haft, Mario, Dias, Manoel Martins |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Brazilian Archives of Biology and Technology
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/16246 |
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oai:repositorio:1-16246 |
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oai:repositorio:1-16246 Diet and prey availability of terrestrial insectivorous birds prone to extinction in Amazonian forest fragments Mestre, Luiz Augusto Macedo Cohn-Haft, Mario Dias, Manoel Martins Aves Formicarius Analis Formicarius Colma Myrmeciza Ferruginea Sclerurus Rufigularis This study compared niche breath, prey size, and diet variability in two pairs of sympatric species of terrestrial insectivorous birds, each pair containing one species that can persist in small forest fragments and one that does not. The pairs were Myrmeciza ferruginea and Sclerurus rufigularis; and Formicarius colma and F. analis, respectively. The prey availability in forest fragments was also sampled and compared to the availability in continuous forests. Niche breath indices did not differ between pair members, but diet variability differed in the opposite direction from that hypothesized. Although the two bird species most vulnerable to fragmentation fed on larger prey than less vulnerable species, prey availability, including that based on prey size did not differ among fragmented versus continuous forest sites. Thus, diet per se appeared not to be an important cause of extinctionproneness in these species. The simplest explanation proposed, that vulnerability to fragmentation was directly related to territory size, requires testing. However, it was consistent with observations that the bird species feeding on larger prey also need larger territories. 2020-06-02T15:09:53Z 2020-06-02T15:09:53Z 2010 Artigo https://repositorio.inpa.gov.br/handle/1/16246 10.1590/S1516-89132010000600014 en Volume 53, Número 6, Pags. 1371-1381 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Brazilian Archives of Biology and Technology |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Aves Formicarius Analis Formicarius Colma Myrmeciza Ferruginea Sclerurus Rufigularis |
| spellingShingle |
Aves Formicarius Analis Formicarius Colma Myrmeciza Ferruginea Sclerurus Rufigularis Mestre, Luiz Augusto Macedo Diet and prey availability of terrestrial insectivorous birds prone to extinction in Amazonian forest fragments |
| topic_facet |
Aves Formicarius Analis Formicarius Colma Myrmeciza Ferruginea Sclerurus Rufigularis |
| description |
This study compared niche breath, prey size, and diet variability in two pairs of sympatric species of terrestrial insectivorous birds, each pair containing one species that can persist in small forest fragments and one that does not. The pairs were Myrmeciza ferruginea and Sclerurus rufigularis; and Formicarius colma and F. analis, respectively. The prey availability in forest fragments was also sampled and compared to the availability in continuous forests. Niche breath indices did not differ between pair members, but diet variability differed in the opposite direction from that hypothesized. Although the two bird species most vulnerable to fragmentation fed on larger prey than less vulnerable species, prey availability, including that based on prey size did not differ among fragmented versus continuous forest sites. Thus, diet per se appeared not to be an important cause of extinctionproneness in these species. The simplest explanation proposed, that vulnerability to fragmentation was directly related to territory size, requires testing. However, it was consistent with observations that the bird species feeding on larger prey also need larger territories. |
| format |
Artigo |
| author |
Mestre, Luiz Augusto Macedo |
| author2 |
Cohn-Haft, Mario Dias, Manoel Martins |
| author2Str |
Cohn-Haft, Mario Dias, Manoel Martins |
| title |
Diet and prey availability of terrestrial insectivorous birds prone to extinction in Amazonian forest fragments |
| title_short |
Diet and prey availability of terrestrial insectivorous birds prone to extinction in Amazonian forest fragments |
| title_full |
Diet and prey availability of terrestrial insectivorous birds prone to extinction in Amazonian forest fragments |
| title_fullStr |
Diet and prey availability of terrestrial insectivorous birds prone to extinction in Amazonian forest fragments |
| title_full_unstemmed |
Diet and prey availability of terrestrial insectivorous birds prone to extinction in Amazonian forest fragments |
| title_sort |
diet and prey availability of terrestrial insectivorous birds prone to extinction in amazonian forest fragments |
| publisher |
Brazilian Archives of Biology and Technology |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/16246 |
| _version_ |
1787144116955512832 |
| score |
11.755432 |