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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
04/07/2003 |
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Data da última atualização: |
12/12/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CARVALHO, J. O. P. de. |
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Afiliação: |
JOÃO OLEGÁRIO PEREIRA DE CARVALHO, CPATU. |
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Título: |
Changes in the spatial distribution of tree species in a terra firme rain forest in Brazilian Amazonia after logging. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Revista de Ciências Agrárias, Belém, PA, n. 37, p. 53-70, jan./jun. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this paper was to determine changes in the spatial distribution of tree species in a logged compared to an unlogged forest of the Tapajos National Forest in the municipality of Belterra, State of Para, Brazil, over an eight-year period. The distribution pattern was determined for trees> 5 cm dbh and, also, for trees > 30 cm dbh. The relationship (a quadrate method) discussed by McGinnis was selected to be used in this study. Forty-seven percent of species with trees > 5 cm dbh showed clumped distribution in the studied forests. Geissospermwn sericeunz Benth & Hook., Minquartia guianensis Aubl., Poureria bilocularis (H. Winkler) Bachni, Protium guacayantan Cuatrec, Sclerolobium chrysophyllunz Poepp. et Endl. and the Sapotaceae family (9 species) occurred in clumps of small trees (5 cm 5 dbh < 30 cm) and big trees (dbh > 30 cm) in both the logged and undisturbed forest. Trees in all sizes of these species certainly have aggregation characteristics in different light condition's during the whole growth-cycle. Only Sclerolobium cizzysophylltan out of fourteen species that occurred aggregated in all forest conditions was light demanding. The shade-tolerant Lecythis lurida (Miers) Mori and Manilkara huberi (Ducke) Stand!. showed also aggregated distribution for small and big trees in the unlogged forest. An aggregated distribution is not always directly correlated to abundance, considering that most of the clumped species had less than seven trees per hectare. |
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Palavras-Chave: |
Brasil; Distribuição espacial; Espécie arborea; Floresta Nacional do Tapajós; Pará. |
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Thesagro: |
Essência Florestal. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/147575/1/2267-8889-1-PB.pdf
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Marc: |
LEADER 02155naa a2200205 a 4500
001 1403501
005 2016-12-12
008 2002 bl uuuu u00u1 u #d
100 1 $aCARVALHO, J. O. P. de
245 $aChanges in the spatial distribution of tree species in a terra firme rain forest in Brazilian Amazonia after logging.
260 $c2002
520 $aThe objective of this paper was to determine changes in the spatial distribution of tree species in a logged compared to an unlogged forest of the Tapajos National Forest in the municipality of Belterra, State of Para, Brazil, over an eight-year period. The distribution pattern was determined for trees> 5 cm dbh and, also, for trees > 30 cm dbh. The relationship (a quadrate method) discussed by McGinnis was selected to be used in this study. Forty-seven percent of species with trees > 5 cm dbh showed clumped distribution in the studied forests. Geissospermwn sericeunz Benth & Hook., Minquartia guianensis Aubl., Poureria bilocularis (H. Winkler) Bachni, Protium guacayantan Cuatrec, Sclerolobium chrysophyllunz Poepp. et Endl. and the Sapotaceae family (9 species) occurred in clumps of small trees (5 cm 5 dbh < 30 cm) and big trees (dbh > 30 cm) in both the logged and undisturbed forest. Trees in all sizes of these species certainly have aggregation characteristics in different light condition's during the whole growth-cycle. Only Sclerolobium cizzysophylltan out of fourteen species that occurred aggregated in all forest conditions was light demanding. The shade-tolerant Lecythis lurida (Miers) Mori and Manilkara huberi (Ducke) Stand!. showed also aggregated distribution for small and big trees in the unlogged forest. An aggregated distribution is not always directly correlated to abundance, considering that most of the clumped species had less than seven trees per hectare.
650 $aAmazonia
650 $aEssência Florestal
653 $aBrasil
653 $aDistribuição espacial
653 $aEspécie arborea
653 $aFloresta Nacional do Tapajós
653 $aPará
773 $tRevista de Ciências Agrárias, Belém, PA$gn. 37, p. 53-70, jan./jun. 2002.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
11/05/2022 |
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Data da última atualização: |
11/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
REIS FILHO, R. J. C. dos; CARNEIRO, M. S. de S.; PEREIRA, E. S.; FURTADO, R. N.; MORAIS NETO, L. B. de; MAGALHAES, J. A.; ALVES, F. G. da S.; LOPES, M. N. |
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Afiliação: |
RAIMUNDO JOSÉ COUTO DOS REIS FILHO, UFC, Fortaleza.; MARIA SOCORRO DE SOUZA CARNEIRO, UFC, Fortaleza.; ELZANIA SALES PEREIRA, UFC, Fortaleza.; RAFAEL NOGUEIRA FURTADO, IFPI, Paulistana, PI.; LUIZ BARRETO DE MORAIS NETO, Integral Agroindustrial Ltda, Fortaleza, CE.; JOAO AVELAR MAGALHAES, CPAMN; FRANCISCO GLEYSON DA SILVEIRA ALVES, UFC, Fortaleza.; MARCOS NEVES LOPES, IFPI, Valença do Piauí. |
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Título: |
Biomass components and water use efficiency in cactus pear under different irrigation systems and harvest frequencies. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v. 51, e20210093, 2022. |
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ISSN: |
1806-9290 |
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DOI: |
10.37496/rbz5120210093 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective was to evaluate the effect of different irrigation systems and harvest frequencies on the cultivation of cactus pear. The study was conducted in the semi-arid region, in the municipality of Russas, CE, Brazil. The experiment was a split plot randomized block design, with four replications. Plots were represented by irrigation systems (surface drip, microsprinkler, Micro Spray Jet, and conventional sprinkler) and subplots by harvest frequencies (6, 9, 12, and 18 months). Cactus pear biomass production characteristics were evaluated. Most of the productive characteristics evaluated were influenced by harvest frequency and irrigation system. The harvest frequency of 12 months combined with conventional sprinkler system resulted in a total dry biomass production of 16,400 kg ha−1. The conventional sprinkler system showed the highest number of second-order cladodes (4.9 cladodes plant−1). The conventional sprinkler and Micro Spray Jet systems showed the highest values for various structural characteristics. For water use efficiency (WUE), the highest value was found at the frequency of six months (8.46 kg ha−1 mm−1). Regarding the effects of irrigation system on WUE, the highest values were observed with the conventional sprinkler system (8.20 kg ha−1 mm−1). The harvest frequency of 12 months combined with the conventional sprinkler system presents better results in the evaluated productive characteristics, mainly the cactus pear production by area. MenosThe objective was to evaluate the effect of different irrigation systems and harvest frequencies on the cultivation of cactus pear. The study was conducted in the semi-arid region, in the municipality of Russas, CE, Brazil. The experiment was a split plot randomized block design, with four replications. Plots were represented by irrigation systems (surface drip, microsprinkler, Micro Spray Jet, and conventional sprinkler) and subplots by harvest frequencies (6, 9, 12, and 18 months). Cactus pear biomass production characteristics were evaluated. Most of the productive characteristics evaluated were influenced by harvest frequency and irrigation system. The harvest frequency of 12 months combined with conventional sprinkler system resulted in a total dry biomass production of 16,400 kg ha−1. The conventional sprinkler system showed the highest number of second-order cladodes (4.9 cladodes plant−1). The conventional sprinkler and Micro Spray Jet systems showed the highest values for various structural characteristics. For water use efficiency (WUE), the highest value was found at the frequency of six months (8.46 kg ha−1 mm−1). Regarding the effects of irrigation system on WUE, the highest values were observed with the conventional sprinkler system (8.20 kg ha−1 mm−1). The harvest frequency of 12 months combined with the conventional sprinkler system presents better results in the evaluated productive characteristics, mainly the cactus pear ... Mostrar Tudo |
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Thesagro: |
Forragem; Irrigação; Manejo de Água. |
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Thesaurus NAL: |
Cladodes; Forage production; Irrigation management; Opuntia stricta. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1142887/1/BiomassComponentsWaterEfficiencyCactusRBZ51.2022.pdf
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Marc: |
LEADER 02469naa a2200313 a 4500
001 2142887
005 2022-05-11
008 2022 bl uuuu u00u1 u #d
022 $a1806-9290
024 7 $a10.37496/rbz5120210093$2DOI
100 1 $aREIS FILHO, R. J. C. dos
245 $aBiomass components and water use efficiency in cactus pear under different irrigation systems and harvest frequencies.$h[electronic resource]
260 $c2022
520 $aThe objective was to evaluate the effect of different irrigation systems and harvest frequencies on the cultivation of cactus pear. The study was conducted in the semi-arid region, in the municipality of Russas, CE, Brazil. The experiment was a split plot randomized block design, with four replications. Plots were represented by irrigation systems (surface drip, microsprinkler, Micro Spray Jet, and conventional sprinkler) and subplots by harvest frequencies (6, 9, 12, and 18 months). Cactus pear biomass production characteristics were evaluated. Most of the productive characteristics evaluated were influenced by harvest frequency and irrigation system. The harvest frequency of 12 months combined with conventional sprinkler system resulted in a total dry biomass production of 16,400 kg ha−1. The conventional sprinkler system showed the highest number of second-order cladodes (4.9 cladodes plant−1). The conventional sprinkler and Micro Spray Jet systems showed the highest values for various structural characteristics. For water use efficiency (WUE), the highest value was found at the frequency of six months (8.46 kg ha−1 mm−1). Regarding the effects of irrigation system on WUE, the highest values were observed with the conventional sprinkler system (8.20 kg ha−1 mm−1). The harvest frequency of 12 months combined with the conventional sprinkler system presents better results in the evaluated productive characteristics, mainly the cactus pear production by area.
650 $aCladodes
650 $aForage production
650 $aIrrigation management
650 $aOpuntia stricta
650 $aForragem
650 $aIrrigação
650 $aManejo de Água
700 1 $aCARNEIRO, M. S. de S.
700 1 $aPEREIRA, E. S.
700 1 $aFURTADO, R. N.
700 1 $aMORAIS NETO, L. B. de
700 1 $aMAGALHAES, J. A.
700 1 $aALVES, F. G. da S.
700 1 $aLOPES, M. N.
773 $tRevista Brasileira de Zootecnia$gv. 51, e20210093, 2022.
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Embrapa Meio-Norte (CPAMN) |
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