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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
10/11/2021 |
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Data da última atualização: |
10/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BOURGOIN, C.; BETBEDER, J.; LE ROUX, R.; GOND, V.; OSZWALD, J.; ARVOR, D.; BAUDRY, J.; BOUSSARD, H.; LE CLECH, S.; FREITAS, L. J. M. de; DESSARD, H.; LÄDERACH, P.; REYMONDIN, L.; BLANC, L. |
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Afiliação: |
CLÉMENT BOURGOIN, CIRAD / CIAT; JULIE BETBEDER, CIRAD / CATIE; RENAN LE ROUX, CIRAD; VALÉRY GOND, CIRAD; JOHAN OSZWALD, Université Rennes 2; DAMIEN ARVOR, Université Rennes 2; JACQUES BAUDRY, BAGAP, INRAE, Institut Agro; HUGUES BOUSSARD, BAGAP, INRAE, Institut Agro; SOLEN LE CLECH, Wageningen University and Research; LUCAS JOSE MAZZEI DE FREITAS, CPATU; HÉLÈNE DESSARD, CIRAD; PETER LÄDERACH, CIAT; LOUIS REYMONDIN, CIAT; LILIAN BLANC, CIRAD. |
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Título: |
Looking beyond forest cover: an analysis of landscape-scale predictors of forest degradation in the Brazilian Amazon. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Environmental Research Letters, v. 16, n. 11, 114045, Nov. 2021. |
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DOI: |
https://doi.org/10.1088/1748-9326/ac31eb |
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Idioma: |
Inglês |
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Conteúdo: |
While forest degradation rates and extent exceed deforestation in the Brazilian Amazon, less attention is given to the factors controlling its spatial distribution. No quantified correlation exists between changes of forest structure due to anthropogenic disturbances and dynamics of land use and cover change occurring at broader spatial levels. This study examines the influence of multi-scale landscape structure factors (i.e. spatial composition, configuration and dynamic of land use/cover) on primary forest's aboveground biomass (AGB), spanning from low to highly degraded, in Paragominas municipality (Pará state). We used random forest models to identify the most important landscape predictors of degradation and clustering methods to analyze their distribution and interactions. We found that 58% of the variance of AGB could be explained by metrics reflecting land use practices and agricultural dynamics around primary forest patches and that their spatial patterns were not randomly distributed. Forest degradation is mainly driven by fragmentation effects resulting from old deforestation and colonization events linked with cropland expansion (e.g. soybean and maize) coupled with high accessibility to market. To a lesser extent, degradation is driven by recent and ongoing (1985?2015) deforestation and fragmentation in slash-and-burn agricultural areas, characterized by heterogeneous mosaics of pastures and fallow lands combined with high use of fire. Our findings highlight the potential of landscape-level framework and remotely sensed land cover data for a thorough understanding of the distribution of forest degradation across human-modified landscapes. Addressing these spatial determinants by looking at agricultural dynamics beyond forest cover is necessary to improve forest management which has major implications for biodiversity, carbon and other ecosystem services. MenosWhile forest degradation rates and extent exceed deforestation in the Brazilian Amazon, less attention is given to the factors controlling its spatial distribution. No quantified correlation exists between changes of forest structure due to anthropogenic disturbances and dynamics of land use and cover change occurring at broader spatial levels. This study examines the influence of multi-scale landscape structure factors (i.e. spatial composition, configuration and dynamic of land use/cover) on primary forest's aboveground biomass (AGB), spanning from low to highly degraded, in Paragominas municipality (Pará state). We used random forest models to identify the most important landscape predictors of degradation and clustering methods to analyze their distribution and interactions. We found that 58% of the variance of AGB could be explained by metrics reflecting land use practices and agricultural dynamics around primary forest patches and that their spatial patterns were not randomly distributed. Forest degradation is mainly driven by fragmentation effects resulting from old deforestation and colonization events linked with cropland expansion (e.g. soybean and maize) coupled with high accessibility to market. To a lesser extent, degradation is driven by recent and ongoing (1985?2015) deforestation and fragmentation in slash-and-burn agricultural areas, characterized by heterogeneous mosaics of pastures and fallow lands combined with high use of fire. Our findings highlight the... Mostrar Tudo |
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Thesagro: |
Degradação Ambiental; Sensoriamento Remoto; Uso da Terra. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/227627/1/Bourgoin-2021-Environ.-Res.-Lett.-16-114045.pdf
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Marc: |
LEADER 02866naa a2200325 a 4500
001 2135995
005 2021-11-10
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1088/1748-9326/ac31eb$2DOI
100 1 $aBOURGOIN, C.
245 $aLooking beyond forest cover$ban analysis of landscape-scale predictors of forest degradation in the Brazilian Amazon.$h[electronic resource]
260 $c2021
520 $aWhile forest degradation rates and extent exceed deforestation in the Brazilian Amazon, less attention is given to the factors controlling its spatial distribution. No quantified correlation exists between changes of forest structure due to anthropogenic disturbances and dynamics of land use and cover change occurring at broader spatial levels. This study examines the influence of multi-scale landscape structure factors (i.e. spatial composition, configuration and dynamic of land use/cover) on primary forest's aboveground biomass (AGB), spanning from low to highly degraded, in Paragominas municipality (Pará state). We used random forest models to identify the most important landscape predictors of degradation and clustering methods to analyze their distribution and interactions. We found that 58% of the variance of AGB could be explained by metrics reflecting land use practices and agricultural dynamics around primary forest patches and that their spatial patterns were not randomly distributed. Forest degradation is mainly driven by fragmentation effects resulting from old deforestation and colonization events linked with cropland expansion (e.g. soybean and maize) coupled with high accessibility to market. To a lesser extent, degradation is driven by recent and ongoing (1985?2015) deforestation and fragmentation in slash-and-burn agricultural areas, characterized by heterogeneous mosaics of pastures and fallow lands combined with high use of fire. Our findings highlight the potential of landscape-level framework and remotely sensed land cover data for a thorough understanding of the distribution of forest degradation across human-modified landscapes. Addressing these spatial determinants by looking at agricultural dynamics beyond forest cover is necessary to improve forest management which has major implications for biodiversity, carbon and other ecosystem services.
650 $aDegradação Ambiental
650 $aSensoriamento Remoto
650 $aUso da Terra
700 1 $aBETBEDER, J.
700 1 $aLE ROUX, R.
700 1 $aGOND, V.
700 1 $aOSZWALD, J.
700 1 $aARVOR, D.
700 1 $aBAUDRY, J.
700 1 $aBOUSSARD, H.
700 1 $aLE CLECH, S.
700 1 $aFREITAS, L. J. M. de
700 1 $aDESSARD, H.
700 1 $aLÄDERACH, P.
700 1 $aREYMONDIN, L.
700 1 $aBLANC, L.
773 $tEnvironmental Research Letters$gv. 16, n. 11, 114045, Nov. 2021.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
29/10/2020 |
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Data da última atualização: |
29/10/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
BURCKHARDT, D.; DALLE CORT, J.; QUEIROZ, D. L. de. |
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Afiliação: |
Daniel Burckhardt, Naturhistorisches Museum; Giulia Dalle Cort, UFPR, CIFLOMA; DALVA LUIZ DE QUEIROZ, CNPF. |
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Título: |
Jumping plant lice of the genus Aphalara (Hemiptera, Psylloidea, Aphalaridae) in the Neotropics. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
ZooKeys, v. 980, p. 119-140, 2020. |
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DOI: |
10.3897/zookeys.980.56807 |
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Idioma: |
Inglês |
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Conteúdo: |
The Neotropical species of the predominantly north temperate genus Aphalara are reviewed. Four species are recorded here from this region, two of which are described as new. Aphalara ritteri sp. nov. occurs in southern Brazil (Paraná, Rio Grande do Sul, Santa Catarina) and represents the first and only species reported from South America. A second new species, Aphalara ortegae sp. nov., is described from Mexico and Puerto Rico. Another two species, Aphalara persicaria Caldwell, 1937 and A. simila Caldwell, 1937, have been previously reported from Mexico and the USA, and one of them also from Cuba. The two new species are both associated with Persicaria hydropiperoides and P. punctata (Polygonaceae) on which the immatures induce leaf roll galls. The two new species are morphologically similar to A. persicaria, to which they are probably closely related. A key is provided for the adults and immatures of the Neotropical species of Aphalara. |
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Palavras-Chave: |
Leaf roll galls; Psilídeo; Psyllids. |
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Thesaurus NAL: |
Persicaria; Polygonaceae; Sternorrhyncha. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/217248/1/Dalva-ZK-article-56807-en-1-1.pdf
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Marc: |
LEADER 01612naa a2200229 a 4500
001 2126070
005 2020-10-29
008 2020 bl uuuu u00u1 u #d
024 7 $a10.3897/zookeys.980.56807$2DOI
100 1 $aBURCKHARDT, D.
245 $aJumping plant lice of the genus Aphalara (Hemiptera, Psylloidea, Aphalaridae) in the Neotropics.$h[electronic resource]
260 $c2020
520 $aThe Neotropical species of the predominantly north temperate genus Aphalara are reviewed. Four species are recorded here from this region, two of which are described as new. Aphalara ritteri sp. nov. occurs in southern Brazil (Paraná, Rio Grande do Sul, Santa Catarina) and represents the first and only species reported from South America. A second new species, Aphalara ortegae sp. nov., is described from Mexico and Puerto Rico. Another two species, Aphalara persicaria Caldwell, 1937 and A. simila Caldwell, 1937, have been previously reported from Mexico and the USA, and one of them also from Cuba. The two new species are both associated with Persicaria hydropiperoides and P. punctata (Polygonaceae) on which the immatures induce leaf roll galls. The two new species are morphologically similar to A. persicaria, to which they are probably closely related. A key is provided for the adults and immatures of the Neotropical species of Aphalara.
650 $aPersicaria
650 $aPolygonaceae
650 $aSternorrhyncha
653 $aLeaf roll galls
653 $aPsilídeo
653 $aPsyllids
700 1 $aDALLE CORT, J.
700 1 $aQUEIROZ, D. L. de
773 $tZooKeys$gv. 980, p. 119-140, 2020.
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Registro original: |
Embrapa Florestas (CNPF) |
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