Margay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbance
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/267856 |
Resumo: | The margay (Leopardus wiedii) is a small Neotropical arboreal wild cat. This species is thought to be forest-dependent, although few studies so far have directly evaluated the rela tionships between spatiotemporal aspects of its ecology and landscape characteristics. The aim of this study was to estimate margay population density and activity patterns in six areas with different habitat types and levels of anthropogenic disturbance in the southern most Atlantic Forest of Brazil. Our working hypothesis was that density and activity patterns differed between areas in response to differences in forest cover and anthropogenic distur bance. Margay records were obtained using camera trapping, during spring and summer from 2017 to 2019. In all areas, the sampling scheme consisted of 20 un-baited stations, set 1km apart, each containing two paired cameras. We assessed the potential effects of envi ronmental variables, including anthropogenic factors, on margay density, rate of detection and space use by comparing nine spatial capture-recapture (SCR) models. Activity patterns of the margay, its potential prey, and competitors were described and compared using the date and time of the records. We obtained 66 records of margay. Two of the six sampled areas were excluded from subsequent analyses due to the small number of records. The density estimated by the top-ranked model varied from 9.6±6.4 individuals/100km2 in the area with the highest human disturbance to 37.4±15.1 individuals/100km2 in a less disturbed area. Margay densities responded positively to vegetation cover, supporting the hypothesis of forest dependence by the species. Both the margay and their potential prey (small rodents and marsupials) were found to be mostly nocturnal. Margay activity also overlapped with that of the ocelot, Leopardus pardalis, and with mammals associated with human presence (wild boar, cattle, domestic dogs and cats). This is the first multi-area study on pat terns of density and activity of the margay in the Brazilian Atlantic Forest. We concluded that the margay is mostly nocturnal, and while its densities are positively influenced by forest cover and negatively influenced by human disturbance, the activity pattern of the species does not seem to change across landscapes with distinct levels of human modification. Margay populations seem to be able to persist under moderate levels of habitat modification, highlighting the importance of preserving even small native forest remnants in the highly fragmented Atlantic Forest. |
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Horn, Paula ElisaPereira, Maria João Veloso da Costa RamosTrigo, Tatiane CamposEizirik, EduardoTirelli, Flávia Pereira2023-11-30T03:24:52Z20201932-6203http://hdl.handle.net/10183/267856001177932The margay (Leopardus wiedii) is a small Neotropical arboreal wild cat. This species is thought to be forest-dependent, although few studies so far have directly evaluated the rela tionships between spatiotemporal aspects of its ecology and landscape characteristics. The aim of this study was to estimate margay population density and activity patterns in six areas with different habitat types and levels of anthropogenic disturbance in the southern most Atlantic Forest of Brazil. Our working hypothesis was that density and activity patterns differed between areas in response to differences in forest cover and anthropogenic distur bance. Margay records were obtained using camera trapping, during spring and summer from 2017 to 2019. In all areas, the sampling scheme consisted of 20 un-baited stations, set 1km apart, each containing two paired cameras. We assessed the potential effects of envi ronmental variables, including anthropogenic factors, on margay density, rate of detection and space use by comparing nine spatial capture-recapture (SCR) models. Activity patterns of the margay, its potential prey, and competitors were described and compared using the date and time of the records. We obtained 66 records of margay. Two of the six sampled areas were excluded from subsequent analyses due to the small number of records. The density estimated by the top-ranked model varied from 9.6±6.4 individuals/100km2 in the area with the highest human disturbance to 37.4±15.1 individuals/100km2 in a less disturbed area. Margay densities responded positively to vegetation cover, supporting the hypothesis of forest dependence by the species. Both the margay and their potential prey (small rodents and marsupials) were found to be mostly nocturnal. Margay activity also overlapped with that of the ocelot, Leopardus pardalis, and with mammals associated with human presence (wild boar, cattle, domestic dogs and cats). This is the first multi-area study on pat terns of density and activity of the margay in the Brazilian Atlantic Forest. We concluded that the margay is mostly nocturnal, and while its densities are positively influenced by forest cover and negatively influenced by human disturbance, the activity pattern of the species does not seem to change across landscapes with distinct levels of human modification. Margay populations seem to be able to persist under moderate levels of habitat modification, highlighting the importance of preserving even small native forest remnants in the highly fragmented Atlantic Forest.application/pdfengPlos One. San Francisco. Vol. 15, no. 5 (May 2020), e0232013, 25 p.Leopardus wiediiComportamento animalMata AtlânticaMargay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbanceEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001177932.pdf.txt001177932.pdf.txtExtracted Texttext/plain78708http://www.lume.ufrgs.br/bitstream/10183/267856/2/001177932.pdf.txt9b1dcdd09977ca8e6f027830323d8f8eMD52ORIGINAL001177932.pdfTexto completo (inglês)application/pdf3774571http://www.lume.ufrgs.br/bitstream/10183/267856/1/001177932.pdf7a114d5b8961b1228e6269125b45e382MD5110183/2678562023-12-01 04:26:40.481155oai:www.lume.ufrgs.br:10183/267856Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-12-01T06:26:40Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Margay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbance |
title |
Margay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbance |
spellingShingle |
Margay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbance Horn, Paula Elisa Leopardus wiedii Comportamento animal Mata Atlântica |
title_short |
Margay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbance |
title_full |
Margay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbance |
title_fullStr |
Margay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbance |
title_full_unstemmed |
Margay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbance |
title_sort |
Margay (Leopardus wiedii) in the southernmost Atlantic Forest: density and activity patterns under different levels of anthropogenic disturbance |
author |
Horn, Paula Elisa |
author_facet |
Horn, Paula Elisa Pereira, Maria João Veloso da Costa Ramos Trigo, Tatiane Campos Eizirik, Eduardo Tirelli, Flávia Pereira |
author_role |
author |
author2 |
Pereira, Maria João Veloso da Costa Ramos Trigo, Tatiane Campos Eizirik, Eduardo Tirelli, Flávia Pereira |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Horn, Paula Elisa Pereira, Maria João Veloso da Costa Ramos Trigo, Tatiane Campos Eizirik, Eduardo Tirelli, Flávia Pereira |
dc.subject.por.fl_str_mv |
Leopardus wiedii Comportamento animal Mata Atlântica |
topic |
Leopardus wiedii Comportamento animal Mata Atlântica |
description |
The margay (Leopardus wiedii) is a small Neotropical arboreal wild cat. This species is thought to be forest-dependent, although few studies so far have directly evaluated the rela tionships between spatiotemporal aspects of its ecology and landscape characteristics. The aim of this study was to estimate margay population density and activity patterns in six areas with different habitat types and levels of anthropogenic disturbance in the southern most Atlantic Forest of Brazil. Our working hypothesis was that density and activity patterns differed between areas in response to differences in forest cover and anthropogenic distur bance. Margay records were obtained using camera trapping, during spring and summer from 2017 to 2019. In all areas, the sampling scheme consisted of 20 un-baited stations, set 1km apart, each containing two paired cameras. We assessed the potential effects of envi ronmental variables, including anthropogenic factors, on margay density, rate of detection and space use by comparing nine spatial capture-recapture (SCR) models. Activity patterns of the margay, its potential prey, and competitors were described and compared using the date and time of the records. We obtained 66 records of margay. Two of the six sampled areas were excluded from subsequent analyses due to the small number of records. The density estimated by the top-ranked model varied from 9.6±6.4 individuals/100km2 in the area with the highest human disturbance to 37.4±15.1 individuals/100km2 in a less disturbed area. Margay densities responded positively to vegetation cover, supporting the hypothesis of forest dependence by the species. Both the margay and their potential prey (small rodents and marsupials) were found to be mostly nocturnal. Margay activity also overlapped with that of the ocelot, Leopardus pardalis, and with mammals associated with human presence (wild boar, cattle, domestic dogs and cats). This is the first multi-area study on pat terns of density and activity of the margay in the Brazilian Atlantic Forest. We concluded that the margay is mostly nocturnal, and while its densities are positively influenced by forest cover and negatively influenced by human disturbance, the activity pattern of the species does not seem to change across landscapes with distinct levels of human modification. Margay populations seem to be able to persist under moderate levels of habitat modification, highlighting the importance of preserving even small native forest remnants in the highly fragmented Atlantic Forest. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020 |
dc.date.accessioned.fl_str_mv |
2023-11-30T03:24:52Z |
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http://hdl.handle.net/10183/267856 |
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1932-6203 |
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001177932 |
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http://hdl.handle.net/10183/267856 |
dc.language.iso.fl_str_mv |
eng |
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dc.relation.ispartof.pt_BR.fl_str_mv |
Plos One. San Francisco. Vol. 15, no. 5 (May 2020), e0232013, 25 p. |
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