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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: |
24/03/2011 |
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Data da última atualização: |
11/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
LIMA, T. T. S.; MIRANDA, I. S.; VASCONCELOS, S. S. |
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Afiliação: |
TÂMARA THAIZ SANTANA LIMA, UFRA; IZILDINHA SOUZA MIRANDA, UFRA; STEEL SILVA VASCONCELOS, CPATU. |
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Título: |
Effects of water and nutrient availability on fine root growth in eastern Amazonian forest regrowth, Brazil. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
New Phytologist, v. 187, p. 622-630, 2010. |
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DOI: |
10.1111/j.1469-8137.2010.03299.x |
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Idioma: |
Inglês |
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Conteúdo: |
Fine root dynamics is widely recognized as an important biogeochemical process, but there are few data on ?ne root growth and its response to soil resource availability, especially for tropical forests. We evaluated the response of ?ne root dynamics to altered availability of soil water and nutrients in a 20-yr-old forest regrowth in eastern Amazonia. In one experiment the dry season reduction in soil moisture was alleviated by irrigation. In the other experiment, nutrient supply was reduced by litter removal. We used the ingrowth core technique to measure ?ne root mass growth, length growth, mortality and speci?c root length. Dry-season irrigation had no signi?cant effect on mass and length of live and dead roots, whereas litter removal reduced mass and length of live roots. For both irrigation and litter removal experiments, root growth was signi?cantly greater in the dry season than in the wet season. Increased root growth was associated with decreased soil water availability. However, root growth did not increase in response to nutrient reduction in litter removal plots. Overall, our results suggest that belowground allocation may differ according to the type of soil resource limitation. |
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Thesagro: |
Água; Biomassa; Chuva; Floresta; Irrigação; Raiz; Seca; Solo. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01913naa a2200253 a 4500
001 1882820
005 2022-11-11
008 2010 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1469-8137.2010.03299.x$2DOI
100 1 $aLIMA, T. T. S.
245 $aEffects of water and nutrient availability on fine root growth in eastern Amazonian forest regrowth, Brazil.$h[electronic resource]
260 $c2010
520 $aFine root dynamics is widely recognized as an important biogeochemical process, but there are few data on ?ne root growth and its response to soil resource availability, especially for tropical forests. We evaluated the response of ?ne root dynamics to altered availability of soil water and nutrients in a 20-yr-old forest regrowth in eastern Amazonia. In one experiment the dry season reduction in soil moisture was alleviated by irrigation. In the other experiment, nutrient supply was reduced by litter removal. We used the ingrowth core technique to measure ?ne root mass growth, length growth, mortality and speci?c root length. Dry-season irrigation had no signi?cant effect on mass and length of live and dead roots, whereas litter removal reduced mass and length of live roots. For both irrigation and litter removal experiments, root growth was signi?cantly greater in the dry season than in the wet season. Increased root growth was associated with decreased soil water availability. However, root growth did not increase in response to nutrient reduction in litter removal plots. Overall, our results suggest that belowground allocation may differ according to the type of soil resource limitation.
650 $aÁgua
650 $aBiomassa
650 $aChuva
650 $aFloresta
650 $aIrrigação
650 $aRaiz
650 $aSeca
650 $aSolo
700 1 $aMIRANDA, I. S.
700 1 $aVASCONCELOS, S. S.
773 $tNew Phytologist$gv. 187, p. 622-630, 2010.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
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Registro completo
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Biblioteca(s): |
Catálogo Coletivo de Periódicos Embrapa; Embrapa Amazônia Oriental. |
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Identificador: |
503 |
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Data corrente: |
09/05/2002 |
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Data da última atualização: |
12/05/2015 |
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Código do título: |
0901372 |
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ISSN: |
0100-1922 |
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Código CCN: |
003459-2 |
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Título e Subtítulo: |
ANAIS DA BIBLIOTECA NACIONAL |
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Título alternativo: |
ANAES DA BIBLIOTHECA NACIONAL |
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Entidade: |
Biblioteca Nacional do Rio de Janeiro |
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Local de publicação: |
Rio De Janeiro, RJ |
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Periodicidade: |
Anual |
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Inicio de publicação: |
1876 |
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Coleções da unidade: |
Embrapa Amazônia Oriental
1883 11; 1884/85 12; 1886 14(1-2); 1887/88 15(1/2); 1889/90 16(1-2); 1891/92 17; 1896 18; 1898 20; 1899 21; 1900 22; 1901 23; 1903 25; 1904 26; 1905 27; 1906 28; 1907 29; 1908 30; 1909 31; 1910 32; 1911 33; 1912 34; 1913 35; 1914 36; 1915 37; 1916 38; 1917 39; 1918 40; 1919 41; 1920 42; 1924 46; 1925 47; 1927 49; 1928 50; 1929 51; 1930 52; 1931 53; 1932 54; 1933 55; 1934 56; 1935 57; 1936 58; 1937 59; 1938 60; 1948 66, 67; 1949 68; 1950 69, 70; 1951 71, 72; 1953 74; 1954 73; 1955 75; 1956 76; 1957 77; 1958 78; 1959 79; 1960 80; 1962 82; 1963 83; 1964 84; 1965 85; 1966 86; 1967 87; 1968 88; 1969 89; 1970 90; 1971 91; 1972 92(3,6-8); 1973 93; 1974 94; 1975 95(1-2); 1976 96; 1977 97; 1978 98; 1980 100; 1981 101; 1982 102; 1983 103; 1985 105; 1986 106; 1987 107; 1988 108; 1989 109; 1990 110; 1991 111; 1992 112; 1993 113; 1994 114
Classificação: 981.05A6 |
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