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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
28/01/2003 |
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Data da última atualização: |
13/03/2017 |
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Autoria: |
SEIXAS, G. H. F.; MOURAO, G. de M. |
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Afiliação: |
SEMA (Campo Grande, MS); EMBRAPA Pantanal (Corumbá, MS). |
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Título: |
Nesting success and hatching survival of the Blue-fronted Amazon (Amazona aestiva) in the Pantanal of Mato Grosso do Sul, Brazil. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Journal of Field Ornithology, v.73, n.4, p.399-409, Autumn 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
We studied the reproductive biology of a population of Blue-fronted Amazons (Amazona aestiva) in the Pantanal of Mato Grosso do Sul State, Brazil, between 1977 and 1999. Nesting occurred from August to December. We monitored 94 nests which were found in trees of different sizes. Nesting trees were distributed in all major vegetation associations (floodplains, grasslands, scrub savanna, savanna, arboreal savanna, riparian forests, and pastures). We found half of nests (53%) in an open and disturbed area of 34 km2, yielding a density of 0.5 nests/km2. In the remaining 486 km2 of the study area, we estimated a mean density of 0.03 nests/km2. This could reflect preferences towards open and anthropic-influenced habitats or simply visibility bias. We found most of the nests in Palmae, Leguminosae, and Bignoniaceae, but the proportion of successful nests did not differ between tree types. Average clutch size varied little among the three years of study, but nest survival and the proportion of fledglings per female were lower in 1998 than in 1997 and 1999. The cause of the lower fledging success in 1998 was not determined, but deforestation, an early onset of the rainy season, and higher rates of nest visitation by researches may have been involved. |
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Palavras-Chave: |
Amazona aestiva; Ave; Biologia reprodutiva; Bird; Blued-fronted Amazon; Mato Grosso do Sul; Papagaio-verdadeiro; Reproductive biology. |
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Thesaurus NAL: |
Brazil; Pantanal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02017naa a2200253 a 4500
001 1810472
005 2017-03-13
008 2002 bl --- 0-- u #d
100 1 $aSEIXAS, G. H. F.
245 $aNesting success and hatching survival of the Blue-fronted Amazon (Amazona aestiva) in the Pantanal of Mato Grosso do Sul, Brazil.
260 $c2002
520 $aWe studied the reproductive biology of a population of Blue-fronted Amazons (Amazona aestiva) in the Pantanal of Mato Grosso do Sul State, Brazil, between 1977 and 1999. Nesting occurred from August to December. We monitored 94 nests which were found in trees of different sizes. Nesting trees were distributed in all major vegetation associations (floodplains, grasslands, scrub savanna, savanna, arboreal savanna, riparian forests, and pastures). We found half of nests (53%) in an open and disturbed area of 34 km2, yielding a density of 0.5 nests/km2. In the remaining 486 km2 of the study area, we estimated a mean density of 0.03 nests/km2. This could reflect preferences towards open and anthropic-influenced habitats or simply visibility bias. We found most of the nests in Palmae, Leguminosae, and Bignoniaceae, but the proportion of successful nests did not differ between tree types. Average clutch size varied little among the three years of study, but nest survival and the proportion of fledglings per female were lower in 1998 than in 1997 and 1999. The cause of the lower fledging success in 1998 was not determined, but deforestation, an early onset of the rainy season, and higher rates of nest visitation by researches may have been involved.
650 $aBrazil
650 $aPantanal
653 $aAmazona aestiva
653 $aAve
653 $aBiologia reprodutiva
653 $aBird
653 $aBlued-fronted Amazon
653 $aMato Grosso do Sul
653 $aPapagaio-verdadeiro
653 $aReproductive biology
700 1 $aMOURAO, G. de M.
773 $tJournal of Field Ornithology$gv.73, n.4, p.399-409, Autumn 2002.
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