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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
05/12/2023 |
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Data da última atualização: |
05/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
METCALF, O. C.; BARLOW, J.; MARSDEN, S.; MOURA, N. G. de; BERENGUER, E.; FERREIRA, J. N.; LEES, A. C. |
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Afiliação: |
OLIVER C. METCALF, Manchester Metropolitan University; JOS BARLOW, UFLA / Lancaster University / MPEG; STUART MARSDEN, Manchester Metropolitan University; NARGILA GOMES DE MOURA, Cornell University; ERIKA BERENGUER, Lancaster University / University of Oxford; JOICE NUNES FERREIRA, CPATU; ALEXANDER C. LEES, Manchester Metropolitan University / Cornell University. |
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Título: |
Optimizing tropical forest bird surveys using passive acoustic monitoring and high temporal resolution sampling. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Remote Sensing in Ecology and Conservation, v. 8, n. 1, p. 45-56, 2022. |
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DOI: |
https://doi.org/10.1002/rse2.227 |
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Idioma: |
Inglês |
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Conteúdo: |
Estimation of avian biodiversity is a cornerstone measure of ecosystem condition. Surveys conducted using autonomous recorders are often more efficient at estimating diversity than traditional point-count surveys. However, there is limited research into the optimal temporal resolution for sampling-the trade-off between the number of samples and sample duration when sampling a survey window with a fixed survey effort-despite autonomous recorders allowing easy repeat sampling compared to traditional survey methods. We assess whether the additional temporal coverage from high temporal resolution (HTR) sampling, consisting of 240 15-s samples spread randomly across a survey window detects higher alpha and gamma diversity than low temporal resolution (LTR) sampling of four 15-min samples at the same locations. We do so using an acoustic dataset collected from 29 locations in a region of very high avian biodiversity-the eastern Brazilian Amazon. We find HTR sampling outperforms LTR sampling in every metric considered, with HTR sampling predicted to detect approximately 50% higher alpha diversity, and 10% higher gamma diversity. This effect is primarily driven by increased coverage of variation in detectability across the morning, with the earliest period containing a distinct community that is often under sampled using LTR sampling. LTR sampling produced almost four times as many false absences for species presence. Additionally, LTR sampling incorrectly found 70 species (34%) at only a single forest type when they were in fact present in multiple forest types, while the use of HTR sampling reduced this to just two species (0.9%). When considering multiple independent detections of species, HTR sampling detected three times more uncommon species than LTR sampling. We conclude that high temporal resolution sampling of passive-acoustic monitoring-based surveys should be considered the primary method for estimating the species richness of bird communities in tropical forests. MenosEstimation of avian biodiversity is a cornerstone measure of ecosystem condition. Surveys conducted using autonomous recorders are often more efficient at estimating diversity than traditional point-count surveys. However, there is limited research into the optimal temporal resolution for sampling-the trade-off between the number of samples and sample duration when sampling a survey window with a fixed survey effort-despite autonomous recorders allowing easy repeat sampling compared to traditional survey methods. We assess whether the additional temporal coverage from high temporal resolution (HTR) sampling, consisting of 240 15-s samples spread randomly across a survey window detects higher alpha and gamma diversity than low temporal resolution (LTR) sampling of four 15-min samples at the same locations. We do so using an acoustic dataset collected from 29 locations in a region of very high avian biodiversity-the eastern Brazilian Amazon. We find HTR sampling outperforms LTR sampling in every metric considered, with HTR sampling predicted to detect approximately 50% higher alpha diversity, and 10% higher gamma diversity. This effect is primarily driven by increased coverage of variation in detectability across the morning, with the earliest period containing a distinct community that is often under sampled using LTR sampling. LTR sampling produced almost four times as many false absences for species presence. Additionally, LTR sampling incorrectly found 70 species (34%) at ... Mostrar Tudo |
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Palavras-Chave: |
Bioacustica. |
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Thesagro: |
Ave Selvagem; Floresta Tropical. |
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Thesaurus Nal: |
Tropical forests. |
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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/doc/1159178/1/Optimizing-tropical.pdf
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Marc: |
LEADER 02787naa a2200253 a 4500
001 2159178
005 2023-12-05
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1002/rse2.227$2DOI
100 1 $aMETCALF, O. C.
245 $aOptimizing tropical forest bird surveys using passive acoustic monitoring and high temporal resolution sampling.$h[electronic resource]
260 $c2022
520 $aEstimation of avian biodiversity is a cornerstone measure of ecosystem condition. Surveys conducted using autonomous recorders are often more efficient at estimating diversity than traditional point-count surveys. However, there is limited research into the optimal temporal resolution for sampling-the trade-off between the number of samples and sample duration when sampling a survey window with a fixed survey effort-despite autonomous recorders allowing easy repeat sampling compared to traditional survey methods. We assess whether the additional temporal coverage from high temporal resolution (HTR) sampling, consisting of 240 15-s samples spread randomly across a survey window detects higher alpha and gamma diversity than low temporal resolution (LTR) sampling of four 15-min samples at the same locations. We do so using an acoustic dataset collected from 29 locations in a region of very high avian biodiversity-the eastern Brazilian Amazon. We find HTR sampling outperforms LTR sampling in every metric considered, with HTR sampling predicted to detect approximately 50% higher alpha diversity, and 10% higher gamma diversity. This effect is primarily driven by increased coverage of variation in detectability across the morning, with the earliest period containing a distinct community that is often under sampled using LTR sampling. LTR sampling produced almost four times as many false absences for species presence. Additionally, LTR sampling incorrectly found 70 species (34%) at only a single forest type when they were in fact present in multiple forest types, while the use of HTR sampling reduced this to just two species (0.9%). When considering multiple independent detections of species, HTR sampling detected three times more uncommon species than LTR sampling. We conclude that high temporal resolution sampling of passive-acoustic monitoring-based surveys should be considered the primary method for estimating the species richness of bird communities in tropical forests.
650 $aTropical forests
650 $aAve Selvagem
650 $aFloresta Tropical
653 $aBioacustica
700 1 $aBARLOW, J.
700 1 $aMARSDEN, S.
700 1 $aMOURA, N. G. de
700 1 $aBERENGUER, E.
700 1 $aFERREIRA, J. N.
700 1 $aLEES, A. C.
773 $tRemote Sensing in Ecology and Conservation$gv. 8, n. 1, p. 45-56, 2022.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Biblioteca |
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Origem |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
15/01/2008 |
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Data da última atualização: |
16/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
LILENBAUM, W.; VARGES, R.; MEDEIROS, L.; CORDEIRO, A. G.; CAVALCANTI, A.; SOUZA, G. N. de; RICHTZENHAIN, L.; VASCONCELLOS, S. A. |
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Afiliação: |
Walter Lilenbaum, UFF; Renato Varges, UFF; Luciana Medeiros, UFF; Ana Gabriela Cordeiro, UFF; Amanda Cavalcanti, UFF; Guilherme Nunes de Souza, Embrapa Gado de Leite; Leonardo Richtzenhain, USP; Silvio A. Vasconcellos, USP. |
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Título: |
Risk factors associated with leptospirosis in dairy goats under tropical conditions in Brazil. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Research in Veterinary Science, Oxford, v. 84, n. 1, p. 14-17, 2008. |
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DOI: |
https://doi.org/10.1016/j.rvsc.2007.03.011 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Serum samples from 248 adult dairy goats from 13 flocks with lowered fertility farmed in the Rio de Janeiro region of Brazil were examined for Leptospira antibodies by MAT with 24 serovars, cut off 100. A questionnaire was completed for each herd. Antibodies were detected in 20.8% of these goats, mainly to serovar Hardjo. Risk factors associated with seroprevalence to leptospirosis were the frequency of professional veterinary supervision (OR = 2.35), climate (OR = 2.63) and grazing for more than 2 h a day. Flock factors as size, type of milking and offering of food supplementation, as well as the location and topography, the type of animal housing or the presence of silos did not significantly affect seroprevalence. We suggest that a successful control program for goat leptospirosis should include a complete investigation of herd management practices, which could influence in the occurrence of the infection. (C) 2007 Elsevier Ltd. All rights reserved. |
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Palavras-Chave: |
management practices. |
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Thesaurus NAL: |
goats; leptospirosis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/595311/1/Risk-factors-associated-with-leptospirosis-in-dairy-goats-under-tropical-conditions-in-Brazil.pdf
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Marc: |
LEADER 01758naa a2200253 a 4500
001 1595311
005 2024-02-16
008 2008 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.rvsc.2007.03.011$2DOI
100 1 $aLILENBAUM, W.
245 $aRisk factors associated with leptospirosis in dairy goats under tropical conditions in Brazil.$h[electronic resource]
260 $c2008
520 $aAbstract: Serum samples from 248 adult dairy goats from 13 flocks with lowered fertility farmed in the Rio de Janeiro region of Brazil were examined for Leptospira antibodies by MAT with 24 serovars, cut off 100. A questionnaire was completed for each herd. Antibodies were detected in 20.8% of these goats, mainly to serovar Hardjo. Risk factors associated with seroprevalence to leptospirosis were the frequency of professional veterinary supervision (OR = 2.35), climate (OR = 2.63) and grazing for more than 2 h a day. Flock factors as size, type of milking and offering of food supplementation, as well as the location and topography, the type of animal housing or the presence of silos did not significantly affect seroprevalence. We suggest that a successful control program for goat leptospirosis should include a complete investigation of herd management practices, which could influence in the occurrence of the infection. (C) 2007 Elsevier Ltd. All rights reserved.
650 $agoats
650 $aleptospirosis
653 $amanagement practices
700 1 $aVARGES, R.
700 1 $aMEDEIROS, L.
700 1 $aCORDEIRO, A. G.
700 1 $aCAVALCANTI, A.
700 1 $aSOUZA, G. N. de
700 1 $aRICHTZENHAIN, L.
700 1 $aVASCONCELLOS, S. A.
773 $tResearch in Veterinary Science, Oxford$gv. 84, n. 1, p. 14-17, 2008.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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