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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
25/01/2017 |
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Data da última atualização: |
20/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LEAL, C. G.; POMPEU, P. S.; GARDNER, T. A.; LEITÃO, R. P.; HUGHES, R. M.; KAUFMANN, P. R.; ZUANON, J.; PAULA, F. R. de; FERRAZ, S. F. B.; THOMSON, J. R.; NALLY, R. M.; FERREIRA, J.; BARLOW, J. |
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Afiliação: |
Cecília G. Leal, UFLA / Lancaster University / MPEG; Paulo S. Pompeu, UFLA; Toby A. Gardner, Stockholm Environment Institute; Rafael P. Leitão, INPA; Robert M. Hughes, Oregon State University; Philip R. Kaufmann, U.S. Environmental Protection Agency; Jansen Zuanon, INPA; Felipe R. de Paula, ESALQ/USP; Silvio F. B. Ferraz, ESALQ/USP; James R. Thomson, The University of Canberra; Ralph Mac Nally, The University of Canberra; JOICE NUNES FERREIRA, CPATU; Jos Barlow, Lancaster University / MPEG. |
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Título: |
Multi-scale assessment of human-induced changes to Amazonian instream habitats. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Landscape Ecology, v. 31, n. 8, p. 1725-1745, Oct. 2016. |
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DOI: |
10.1007/s10980-016-0358-x |
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Idioma: |
Inglês |
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Conteúdo: |
Context: Land use change and forest degradation have myriad effects on tropical ecosystems. Yet their consequences for low-order streams remain very poorly understood, including in the world´s largest freshwater basin, the Amazon. Objectives: Determine the degree to which physical and chemical characteristics of the instream habitat of low-order Amazonian streams change in response to past local- and catchment-level anthropogenic disturbances. Methods: To do so, we collected field instream habitat (i.e., physical habitat and water quality) and landscape data from 99 stream sites in two eastern Brazilian Amazon regions. We used random forest regression trees to assess the relative importance of different predictor variables in determining changes in instream habitat response variables. Results: Multiple drivers, operating at multiple spatial scales, were important in determining changes in the physical habitat and water quality of the sites. Although we found few similarities in modelled relationships between the two regions, we observed non-linear responses of specific instream characteristics to landscape change; for example 20 % of catchment deforestation resulted in consistently warmer streams. Conclusions: Our results highlight the importance of local riparian and catchment-scale forest cover in shaping instream physical environments, but also underscore the importance of other land use changes and activities, such as road crossings and upstream agriculture intensification. In contrast to the property-scale focus of the Brazilian Forest code, which governs environmental regulations on private land, our results reinforce the importance of catchment-wide management strategies to protect stream ecosystem integrity. MenosContext: Land use change and forest degradation have myriad effects on tropical ecosystems. Yet their consequences for low-order streams remain very poorly understood, including in the world´s largest freshwater basin, the Amazon. Objectives: Determine the degree to which physical and chemical characteristics of the instream habitat of low-order Amazonian streams change in response to past local- and catchment-level anthropogenic disturbances. Methods: To do so, we collected field instream habitat (i.e., physical habitat and water quality) and landscape data from 99 stream sites in two eastern Brazilian Amazon regions. We used random forest regression trees to assess the relative importance of different predictor variables in determining changes in instream habitat response variables. Results: Multiple drivers, operating at multiple spatial scales, were important in determining changes in the physical habitat and water quality of the sites. Although we found few similarities in modelled relationships between the two regions, we observed non-linear responses of specific instream characteristics to landscape change; for example 20 % of catchment deforestation resulted in consistently warmer streams. Conclusions: Our results highlight the importance of local riparian and catchment-scale forest cover in shaping instream physical environments, but also underscore the importance of other land use changes and activities, such as road crossings and upstream agriculture intensificati... Mostrar Tudo |
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Palavras-Chave: |
Água doce bacia amazónica; Alteração do uso da terra; Gestão de bacias hidrográficas; Impactos antropogénicos. |
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Thesagro: |
Desmatamento; Floresta Tropical. |
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Thesaurus Nal: |
habitats. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02801naa a2200361 a 4500
001 2061809
005 2022-05-20
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1007/s10980-016-0358-x$2DOI
100 1 $aLEAL, C. G.
245 $aMulti-scale assessment of human-induced changes to Amazonian instream habitats.$h[electronic resource]
260 $c2016
520 $aContext: Land use change and forest degradation have myriad effects on tropical ecosystems. Yet their consequences for low-order streams remain very poorly understood, including in the world´s largest freshwater basin, the Amazon. Objectives: Determine the degree to which physical and chemical characteristics of the instream habitat of low-order Amazonian streams change in response to past local- and catchment-level anthropogenic disturbances. Methods: To do so, we collected field instream habitat (i.e., physical habitat and water quality) and landscape data from 99 stream sites in two eastern Brazilian Amazon regions. We used random forest regression trees to assess the relative importance of different predictor variables in determining changes in instream habitat response variables. Results: Multiple drivers, operating at multiple spatial scales, were important in determining changes in the physical habitat and water quality of the sites. Although we found few similarities in modelled relationships between the two regions, we observed non-linear responses of specific instream characteristics to landscape change; for example 20 % of catchment deforestation resulted in consistently warmer streams. Conclusions: Our results highlight the importance of local riparian and catchment-scale forest cover in shaping instream physical environments, but also underscore the importance of other land use changes and activities, such as road crossings and upstream agriculture intensification. In contrast to the property-scale focus of the Brazilian Forest code, which governs environmental regulations on private land, our results reinforce the importance of catchment-wide management strategies to protect stream ecosystem integrity.
650 $ahabitats
650 $aDesmatamento
650 $aFloresta Tropical
653 $aÁgua doce bacia amazónica
653 $aAlteração do uso da terra
653 $aGestão de bacias hidrográficas
653 $aImpactos antropogénicos
700 1 $aPOMPEU, P. S.
700 1 $aGARDNER, T. A.
700 1 $aLEITÃO, R. P.
700 1 $aHUGHES, R. M.
700 1 $aKAUFMANN, P. R.
700 1 $aZUANON, J.
700 1 $aPAULA, F. R. de
700 1 $aFERRAZ, S. F. B.
700 1 $aTHOMSON, J. R.
700 1 $aNALLY, R. M.
700 1 $aFERREIRA, J.
700 1 $aBARLOW, J.
773 $tLandscape Ecology$gv. 31, n. 8, p. 1725-1745, Oct. 2016.
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Embrapa Amazônia Oriental (CPATU) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
27/09/2018 |
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Data da última atualização: |
27/09/2018 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
PINTO, P. H. N.; CRUZ, R. do C.; BRANDÃO, F. Z.; FONSECA, J. de D.; PILE, E. A. M.; FONSECA, J. F. da. |
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Afiliação: |
Pedro Henrique Nicolau Pinto; Renata do Carmo Cruz; Felipe Zandonadi Brandão; João de Deus Fonseca; Edwin Alberto Maure Pile; Jeferson Ferreira da Fonseca, CNPC. |
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Título: |
Uso de sêmen resfriado e inseminação artificial em caprinos leiteiros: a experiência na República de Cabo Verde. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: FONSECA, J. F. da; BRUSCHI, J. H.; MARINHO, A. C. S.; RODRIGUES, I. M. (Ed.). Produção de caprinos e ovinos de leite. Juiz de Fora: Embrapa Gado de Leite; Sobral: Embrapa Caprinos, 2011. Cap. 8. p. 165-191. |
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Idioma: |
Português |
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Palavras-Chave: |
Cabo Verde; Caprino leiteiro. |
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Thesagro: |
Cabra Leiteira; Caprinocultura; Coleta de Sêmen; Inseminação Artificial; Transferência de Embrião. |
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Thesaurus NAL: |
Artificial insemination; Dairy goats; Embryo transfer. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01039naa a2200289 a 4500
001 2096397
005 2018-09-27
008 2011 bl uuuu u00u1 u #d
100 1 $aPINTO, P. H. N.
245 $aUso de sêmen resfriado e inseminação artificial em caprinos leiteiros$ba experiência na República de Cabo Verde.
260 $c2011
650 $aArtificial insemination
650 $aDairy goats
650 $aEmbryo transfer
650 $aCabra Leiteira
650 $aCaprinocultura
650 $aColeta de Sêmen
650 $aInseminação Artificial
650 $aTransferência de Embrião
653 $aCabo Verde
653 $aCaprino leiteiro
700 1 $aCRUZ, R. do C.
700 1 $aBRANDÃO, F. Z.
700 1 $aFONSECA, J. de D.
700 1 $aPILE, E. A. M.
700 1 $aFONSECA, J. F. da
773 $tIn: FONSECA, J. F. da; BRUSCHI, J. H.; MARINHO, A. C. S.; RODRIGUES, I. M. (Ed.). Produção de caprinos e ovinos de leite. Juiz de Fora: Embrapa Gado de Leite; Sobral: Embrapa Caprinos, 2011. Cap. 8. p. 165-191.
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