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| Registros recuperados : 14 | |
| Registros recuperados : 14 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
07/03/2009 |
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Data da última atualização: |
22/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
VASCONCELOS, S. S.; ZARIN, D. J.; ARAÚJO, M. M.; RANGEL-VASCONCELOS, L. G. T.; CARVALHO, C. J. R. de; STAUDHAMMER, C. L.; OLIVEIRA, F. de A. |
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Afiliação: |
STEEL SILVA VASCONCELOS, CPATU; Daniel Jacob Zarin, Universidade da Flórida; Maristela Machado Araújo, Universidade Federal de Santa Maria; Livia Gabrig Turbay Rangel-Vasconcelos, UFRA; CLAUDIO JOSE REIS DE CARVALHO, CPATU; Christina Lynn Staudhammer, Universidade da Flórida; Francisco de Assis Oliveira, UFRA. |
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Título: |
Effects of seasonality, litter removal and dry-season irrigation on litterfall quantity and quality in eastern Amazonian forest regrowth, Brazil. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Journal of Tropical Ecology, v. 24, p. 27-38, 2008. |
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DOI: |
10.1017/S0266467407004580. |
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Idioma: |
Inglês |
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Conteúdo: |
Litterfall quantity and quality may respond to alterations in resource availability expected with ongoing land-use and climate changes. Here, we quantify the effects of altered resource availability on non-woody litterfall quantity and quality (nitrogen and phosphorus concentrations) in easternAmazonian forest regrowth (Brazil) through twomulti-year experimentalmanipulations: (1) daily irrigation (5mmd?1) during the dry season; and (2) fortnightly litter removal. Consistentwith other tropical forest data litterfall exhibited seasonal patterns, increasingwith the onset of the dry season and declining with the onset of the rainy season. Irrigation did not affect litterfall mass and had little impact on nitrogen (N) or phosphorus (P) concentrations and return, except for decreasing litter P concentration at the end of two irrigation periods. Litter removal did not alter litterfall mass or P concentration, but progressively reduced litterfall N during the course of the experiment. Overall, these results suggest signi?cant resistance to altered resource availabilitywithin the bounds of our experimental treatments; our ?ndingsmay help to constrain carbon and nutrient cycling predictions for tropical forests in response to land-use and climate changes |
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Palavras-Chave: |
Brasil. |
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Thesagro: |
Floresta Secundaria; Irrigação. |
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Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02085naa a2200253 a 4500
001 1410004
005 2022-11-22
008 2008 bl uuuu u00u1 u #d
024 7 $a10.1017/S0266467407004580.$2DOI
100 1 $aVASCONCELOS, S. S.
245 $aEffects of seasonality, litter removal and dry-season irrigation on litterfall quantity and quality in eastern Amazonian forest regrowth, Brazil.$h[electronic resource]
260 $c2008
520 $aLitterfall quantity and quality may respond to alterations in resource availability expected with ongoing land-use and climate changes. Here, we quantify the effects of altered resource availability on non-woody litterfall quantity and quality (nitrogen and phosphorus concentrations) in easternAmazonian forest regrowth (Brazil) through twomulti-year experimentalmanipulations: (1) daily irrigation (5mmd?1) during the dry season; and (2) fortnightly litter removal. Consistentwith other tropical forest data litterfall exhibited seasonal patterns, increasingwith the onset of the dry season and declining with the onset of the rainy season. Irrigation did not affect litterfall mass and had little impact on nitrogen (N) or phosphorus (P) concentrations and return, except for decreasing litter P concentration at the end of two irrigation periods. Litter removal did not alter litterfall mass or P concentration, but progressively reduced litterfall N during the course of the experiment. Overall, these results suggest signi?cant resistance to altered resource availabilitywithin the bounds of our experimental treatments; our ?ndingsmay help to constrain carbon and nutrient cycling predictions for tropical forests in response to land-use and climate changes
650 $aAmazonia
650 $aFloresta Secundaria
650 $aIrrigação
653 $aBrasil
700 1 $aZARIN, D. J.
700 1 $aARAÚJO, M. M.
700 1 $aRANGEL-VASCONCELOS, L. G. T.
700 1 $aCARVALHO, C. J. R. de
700 1 $aSTAUDHAMMER, C. L.
700 1 $aOLIVEIRA, F. de A.
773 $tJournal of Tropical Ecology$gv. 24, p. 27-38, 2008.
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