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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
30/08/2021 |
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Data da última atualização: |
19/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, M. V. N. d'; FIGUEIREDO, E. O.; ALMEIDA, D. R. A. de; OLIVEIRA, L. C. de; SILVA, C. A.; NELSON, B. W.; CUNHA, R. M. da; PAPA, D. de A.; STARK, S. C.; VALBUENA, R. |
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Afiliação: |
MARCUS VINICIO NEVES D OLIVEIRA, CPAF-AC; EVANDRO ORFANO FIGUEIREDO, CPAF-AC; DANILO ROBERTI ALVES DE ALMEIDA, "Luiz de Queiroz" College of Agriculture, University of São Paulo (USP/ESALQ); LUIS CLAUDIO DE OLIVEIRA, CPAF-AC; CARLOS ALBERTO SILVA, University of Florida, Gainesville, USA; BRUCE WALKER NELSON, National Institute for Amazon Research (INPA); RENATO MESQUITA DA CUNHA, Instituto de Meio ambiente do Acre; DANIEL DE ALMEIDA PAPA, CPAF-AC; SCOTT C. STARK, Michigan State University, East Lansing, MI, USA; RUBEN VALBUENA, Bangor University, Bangor, UK. |
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Título: |
Impacts of selective logging on Amazon forest canopy structure and biomass with a LiDAR and photogrammetric survey sequence. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 500, 119648, Nov. 2021. |
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ISSN: |
0378-1127 |
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DOI: |
https://doi.org/10.1016/j.foreco.2021.119648 |
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Idioma: |
Inglês |
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Conteúdo: |
Sustainable forest management relies on good knowledge of forest structure obtained from ground surveys combined with remote sensing. Capable of detecting both the forest floor and canopy elements, airborne LiDAR can estimate forest structure parameters with accuracy and precision, but is still difficult to acquire due to the lake of service provider in remote regions of developing countries. Alternatively if ground surface elevations are known (e.g., from LiDAR), they can be tied to a canopy surface model derived from stereo photogrammetry using RGB images from unmanned aerial vehicles (UAV). Here we assessed whether such photogrammetric canopy measurements offer aboveground biomass (AGB) and disturbance impact estimates from logging that are comparable to LiDAR, and whether the use of both in sequence can provide an efficient post-harvest monitoring system. Specifically, through a combination of forest inventory ground plots, airborne LiDAR data, and a UAV-RGB camera system we (i) automatically located and measured canopy disturbance caused by logging, (ii) compared AGB models produced by LiDAR alone and the combination of LiDAR (for terrain elevation model) and RGB-photogrammetry (for forest surface model), and (iii) estimated the AGB stock loss from logging. The study was carried out in the Antimary State forest located in the southwestern Brazilian Amazon. Our results demonstrate that the use of RGB-photogrammetry in regions where the terrain elevation has already been estimated can be an effective way to rapidly identify selective logging and to accurately monitor its impact. MenosSustainable forest management relies on good knowledge of forest structure obtained from ground surveys combined with remote sensing. Capable of detecting both the forest floor and canopy elements, airborne LiDAR can estimate forest structure parameters with accuracy and precision, but is still difficult to acquire due to the lake of service provider in remote regions of developing countries. Alternatively if ground surface elevations are known (e.g., from LiDAR), they can be tied to a canopy surface model derived from stereo photogrammetry using RGB images from unmanned aerial vehicles (UAV). Here we assessed whether such photogrammetric canopy measurements offer aboveground biomass (AGB) and disturbance impact estimates from logging that are comparable to LiDAR, and whether the use of both in sequence can provide an efficient post-harvest monitoring system. Specifically, through a combination of forest inventory ground plots, airborne LiDAR data, and a UAV-RGB camera system we (i) automatically located and measured canopy disturbance caused by logging, (ii) compared AGB models produced by LiDAR alone and the combination of LiDAR (for terrain elevation model) and RGB-photogrammetry (for forest surface model), and (iii) estimated the AGB stock loss from logging. The study was carried out in the Antimary State forest located in the southwestern Brazilian Amazon. Our results demonstrate that the use of RGB-photogrammetry in regions where the terrain elevation has already been ... Mostrar Tudo |
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Palavras-Chave: |
Acre; Aeronave remotamente pilotada; Amazonia Occidental; Amazônia Ocidental; Biomasa aérea; Cubierta forestal; Dossel; Drone; Explotación forestal; FLoresta Estadual do Antimary (AC); RGB images; Sena Madureira (AC); Silvicultura sustentable; Vehículos aéreos no tripulados; Western Amazon. |
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Thesagro: |
Aerofotogrametria; Biomassa; Exploração Florestal; Extração da Madeira; Impacto Ambiental. |
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Thesaurus Nal: |
Aboveground biomass; Environmental impact; Forest canopy; Lidar; Logging; Photogrammetry; Sustainable forestry; Unmanned aerial vehicles. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 03372naa a2200589 a 4500
001 2133927
005 2021-11-19
008 2021 bl uuuu u00u1 u #d
022 $a0378-1127
024 7 $ahttps://doi.org/10.1016/j.foreco.2021.119648$2DOI
100 1 $aOLIVEIRA, M. V. N. d'
245 $aImpacts of selective logging on Amazon forest canopy structure and biomass with a LiDAR and photogrammetric survey sequence.$h[electronic resource]
260 $c2021
520 $aSustainable forest management relies on good knowledge of forest structure obtained from ground surveys combined with remote sensing. Capable of detecting both the forest floor and canopy elements, airborne LiDAR can estimate forest structure parameters with accuracy and precision, but is still difficult to acquire due to the lake of service provider in remote regions of developing countries. Alternatively if ground surface elevations are known (e.g., from LiDAR), they can be tied to a canopy surface model derived from stereo photogrammetry using RGB images from unmanned aerial vehicles (UAV). Here we assessed whether such photogrammetric canopy measurements offer aboveground biomass (AGB) and disturbance impact estimates from logging that are comparable to LiDAR, and whether the use of both in sequence can provide an efficient post-harvest monitoring system. Specifically, through a combination of forest inventory ground plots, airborne LiDAR data, and a UAV-RGB camera system we (i) automatically located and measured canopy disturbance caused by logging, (ii) compared AGB models produced by LiDAR alone and the combination of LiDAR (for terrain elevation model) and RGB-photogrammetry (for forest surface model), and (iii) estimated the AGB stock loss from logging. The study was carried out in the Antimary State forest located in the southwestern Brazilian Amazon. Our results demonstrate that the use of RGB-photogrammetry in regions where the terrain elevation has already been estimated can be an effective way to rapidly identify selective logging and to accurately monitor its impact.
650 $aAboveground biomass
650 $aEnvironmental impact
650 $aForest canopy
650 $aLidar
650 $aLogging
650 $aPhotogrammetry
650 $aSustainable forestry
650 $aUnmanned aerial vehicles
650 $aAerofotogrametria
650 $aBiomassa
650 $aExploração Florestal
650 $aExtração da Madeira
650 $aImpacto Ambiental
653 $aAcre
653 $aAeronave remotamente pilotada
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aBiomasa aérea
653 $aCubierta forestal
653 $aDossel
653 $aDrone
653 $aExplotación forestal
653 $aFLoresta Estadual do Antimary (AC)
653 $aRGB images
653 $aSena Madureira (AC)
653 $aSilvicultura sustentable
653 $aVehículos aéreos no tripulados
653 $aWestern Amazon
700 1 $aFIGUEIREDO, E. O.
700 1 $aALMEIDA, D. R. A. de
700 1 $aOLIVEIRA, L. C. de
700 1 $aSILVA, C. A.
700 1 $aNELSON, B. W.
700 1 $aCUNHA, R. M. da
700 1 $aPAPA, D. de A.
700 1 $aSTARK, S. C.
700 1 $aVALBUENA, R.
773 $tForest Ecology and Management$gv. 500, 119648, Nov. 2021.
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Embrapa Acre (CPAF-AC) |
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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: |
16/05/2017 |
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Data da última atualização: |
22/11/2018 |
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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: |
SANTOS, J. M. L. dos; MONTEIRO, J. P.; RIBEIRO, W. L. C.; MACEDO, I. T. F.; ARAÚJO FILHO, J. V. de; ANDRE, W. P. P. |
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Afiliação: |
Jessica Maria Leite dos Santos, Universidade Estadual do Ceará (UECE) - Fortaleza, CE, Brazil; JOMAR PATRICIO MONTEIRO, CNPC; Wesley Lyeverton Correia Ribeiro, UECE - Fortaleza, CE, Brazil; Iara Tersia Freitas Macedo, UECE- Fortaleza, CE, Brazil; José Vilemar de Araújo Filho, UECE- Fortaleza, CE, Brazil; Weibson Paz Pinheiro Andre, UECE - Fortaleza, CE, Brazil. |
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Título: |
High levels of benzimidazole resistance and beta-tubulin isotype 1 SNP F167Y in Haemonchus contortus populations from Ceará State, Brazil. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Small Ruminant Research, Amsterdam v. 146, p. 48-52, Jan. 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Haemonchus contortus is the most prevalent parasitic nematode in tropical areas, and anthelmintic resistance is a global problem. Our objective was to characterize benzimidazole (BZ) resistance in gastrointestinal nematode populations in Ceará State, Brazil, using the egg hatch test (EHT) and in H. contortus populations using quantitative real-time polymerase chain reaction (qPCR). Twenty locations were surveyed, and fecal samples were collected from a minimum of 40 animals from each farm and pooled. Five thousand L3 from each farm were used to infect single animals at Embrapa (Brazilian Agricultural Research Company) to provide a source of eggs for both phenotypical and molecular tests. The mean EHT was 2.46 ug/ml (±0.58 g/ml), and BZ resistance was detected at all surveyed locations. The mean resistant allelic frequencies at positions F200Y and F167Y were 34.16% (±12.13%) and 58.31% (±18.89%), respectively. The resistant allelic frequencies at F167Y were higher than those at F200Y in most studied locations. We also investigated the possibility that specific BZ utilization may influence resistant allelic frequencies. We selected three nematode populations based on the resistant SNP prevalence at F200Y and F167Y as follows: higher frequency at SNP F200Y, higher frequency at SNP F167Y and similar frequencies at both positions. Anthelmintic treatments included two BZs (oxfendazole and albendazole) and ivermectin. Three animals per population per treatment were infected with 5000 L3, and nematode eggs were collected for molecular test before and after anthelmintic treatments. The results showed preferential selection of SNP F167Y in response to oxfendazole, an increase in resistant SNP frequencies in general in response to albendazole and little change in relation to pre-treatment situations in response to ivermectin. Our results confirm that BZ resistance is common. The resistant allele at SNP F167Y in H. contortus prevails in Ceará State, and we provide evidence that this result may be due to the utilization of oxfendazole in recent years. MenosAbstract: Haemonchus contortus is the most prevalent parasitic nematode in tropical areas, and anthelmintic resistance is a global problem. Our objective was to characterize benzimidazole (BZ) resistance in gastrointestinal nematode populations in Ceará State, Brazil, using the egg hatch test (EHT) and in H. contortus populations using quantitative real-time polymerase chain reaction (qPCR). Twenty locations were surveyed, and fecal samples were collected from a minimum of 40 animals from each farm and pooled. Five thousand L3 from each farm were used to infect single animals at Embrapa (Brazilian Agricultural Research Company) to provide a source of eggs for both phenotypical and molecular tests. The mean EHT was 2.46 ug/ml (±0.58 g/ml), and BZ resistance was detected at all surveyed locations. The mean resistant allelic frequencies at positions F200Y and F167Y were 34.16% (±12.13%) and 58.31% (±18.89%), respectively. The resistant allelic frequencies at F167Y were higher than those at F200Y in most studied locations. We also investigated the possibility that specific BZ utilization may influence resistant allelic frequencies. We selected three nematode populations based on the resistant SNP prevalence at F200Y and F167Y as follows: higher frequency at SNP F200Y, higher frequency at SNP F167Y and similar frequencies at both positions. Anthelmintic treatments included two BZs (oxfendazole and albendazole) and ivermectin. Three animals per population per treatment were infect... Mostrar Tudo |
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Palavras-Chave: |
B-tubulin; Brasil; Ceará; Nematóide gastrointestinal; Real-time PCR; Resistance to anthelmintics; SNP. |
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Thesagro: |
Anti-helmíntico; Benzimidazol; Haemonchus Contortus; Helminto gastrintestinal; Ovino; Resistência. |
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Thesaurus NAL: |
Benzimidazoles; Brazil; Nematoda; Sheep. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 03219naa a2200385 a 4500
001 2069622
005 2018-11-22
008 2017 bl uuuu u00u1 u #d
100 1 $aSANTOS, J. M. L. dos
245 $aHigh levels of benzimidazole resistance and beta-tubulin isotype 1 SNP F167Y in Haemonchus contortus populations from Ceará State, Brazil.$h[electronic resource]
260 $c2017
520 $aAbstract: Haemonchus contortus is the most prevalent parasitic nematode in tropical areas, and anthelmintic resistance is a global problem. Our objective was to characterize benzimidazole (BZ) resistance in gastrointestinal nematode populations in Ceará State, Brazil, using the egg hatch test (EHT) and in H. contortus populations using quantitative real-time polymerase chain reaction (qPCR). Twenty locations were surveyed, and fecal samples were collected from a minimum of 40 animals from each farm and pooled. Five thousand L3 from each farm were used to infect single animals at Embrapa (Brazilian Agricultural Research Company) to provide a source of eggs for both phenotypical and molecular tests. The mean EHT was 2.46 ug/ml (±0.58 g/ml), and BZ resistance was detected at all surveyed locations. The mean resistant allelic frequencies at positions F200Y and F167Y were 34.16% (±12.13%) and 58.31% (±18.89%), respectively. The resistant allelic frequencies at F167Y were higher than those at F200Y in most studied locations. We also investigated the possibility that specific BZ utilization may influence resistant allelic frequencies. We selected three nematode populations based on the resistant SNP prevalence at F200Y and F167Y as follows: higher frequency at SNP F200Y, higher frequency at SNP F167Y and similar frequencies at both positions. Anthelmintic treatments included two BZs (oxfendazole and albendazole) and ivermectin. Three animals per population per treatment were infected with 5000 L3, and nematode eggs were collected for molecular test before and after anthelmintic treatments. The results showed preferential selection of SNP F167Y in response to oxfendazole, an increase in resistant SNP frequencies in general in response to albendazole and little change in relation to pre-treatment situations in response to ivermectin. Our results confirm that BZ resistance is common. The resistant allele at SNP F167Y in H. contortus prevails in Ceará State, and we provide evidence that this result may be due to the utilization of oxfendazole in recent years.
650 $aBenzimidazoles
650 $aBrazil
650 $aNematoda
650 $aSheep
650 $aAnti-helmíntico
650 $aBenzimidazol
650 $aHaemonchus Contortus
650 $aHelminto gastrintestinal
650 $aOvino
650 $aResistência
653 $aB-tubulin
653 $aBrasil
653 $aCeará
653 $aNematóide gastrointestinal
653 $aReal-time PCR
653 $aResistance to anthelmintics
653 $aSNP
700 1 $aMONTEIRO, J. P.
700 1 $aRIBEIRO, W. L. C.
700 1 $aMACEDO, I. T. F.
700 1 $aARAÚJO FILHO, J. V. de
700 1 $aANDRE, W. P. P.
773 $tSmall Ruminant Research, Amsterdam$gv. 146, p. 48-52, Jan. 2017.
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