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5 results on '"Mendes, Calebe"'

1. Binturong ecology and conservation in pristine, fragmented and degraded tropical forests.

Author

Honda, Arata, Amir, Zachary, Mendes, Calebe P., Moore, Jonathan H., and Luskin, Matthew Scott

Subjects
TROPICAL forests, FOREST degradation, HABITATS, SPECIES distribution, OIL palm, FOREST conservation, FOREST restoration
Abstract

The persistence of seed-dispersing animals in degraded habitats could be critical for ensuring the long-term conservation value and restoration of forests. This is particularly important in Southeast Asia, where > 70% of the remaining forest areas are within 1 km of a forest edge, and many are degraded (e.g. logged). We synthesized information on the habitat associations of the binturong Arctictis binturong , a large, semi-arboreal, frugivorous civet and one of the most important seed dispersers in the region, especially for figs (Ficus spp). We adopted a multiscale approach by employing ensemble species distribution modelling from presence-only records, assessing landscape-scale variation in detection rates in published camera-trap studies and using hierarchical occupancy modelling to assess local (i.e. within-landscape) patterns observed from 20 new camera-trap surveys. Contrary to prior reports that binturongs are strongly associated with intact forests, the species was equally present in degraded forests and near forest edges where sufficient forest cover was maintained (> 40% forest cover within a 20-km radius). The species also tolerates moderate incursions of oil palm plantations (< 20% of the area within a 20-km radius covered by oil palm plantations). The relative resilience of binturongs to habitat degradation could be in part because of behavioural adaptations towards increased nocturnal activity. These results support the notion that key seed dispersers can persist and maintain their ecological function in degraded forests. [ABSTRACT FROM AUTHOR]

Published
2024
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2. The highs and lows of serow (Capricornis sumatraensis): multi-scale habitat associations inform large mammal conservation strategies in the face of synergistic threats of deforestation, hunting, and climate change.

Author

Carr, Elliot, Amir, Zachary, Mendes, Calebe P., Moore, Jonathan H., Nursamsi, Ilyas, and Luskin, Matthew Scott

Subjects
MAMMAL conservation, SEROWS, CLIMATE change, DEFORESTATION, HABITATS, BUSHMEAT hunting
Abstract

Southeast Asia is experiencing a biodiversity crisis driven by the synergistic forces of deforestation and poaching. The mainland serow (Capricornis sumatraensis) is a large rainforest goat threatened by habitat loss, hunting for bushmeat, and poaching for traditional medicine. Serow have been considered to be montane forest specialists and preferring limestone karsts, but this has never been rigorously evaluated. If the species is restricted to high elevations, climate change and the upward expansion of deforestation and agriculture would threaten the species, but less so if serows are more closely associated with landscape roughness (i.e., rough topography including at low elevations such as in karst landscapes). We collated and synthesised new and existing camera-trap data from 29 landscapes across Southeast Asia to determine the serow's habitat associations at regional, landscape, and local scales. Serow occurrence was negatively associated with oil palm plantation cover and positively associated with landscape roughness across all scales; elevation was not a top-performing variable in model selection. With just 16% of their forested range under some form of declared protection, climate change and expansion of oil palm plantations into higher elevations will further reduce habitat and facilitate poaching into the species' core habitat. However, the serow's preference for rough landscapes, where mechanised agriculture is infeasible, may be its saving grace. An improved understanding of megafauna habitat associations provides conservationists, enforcement agencies, and policymakers with practical and applicable guidance to ensure their persistence in Asia. [ABSTRACT FROM AUTHOR]

Published
2023
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3. Effects of environmental variables and anthropic perturbations on animal behavior

Author

Mendes, Calebe Pereira [UNESP], Universidade Estadual Paulista (Unesp), and Galetti, Mauro [UNESP]

Subjects
Mammals, Mamíferos, Ecology, Zoologia, Conservação, Conservation, Zoology, Comportamento animal, Animal behavior, Ecologia
Abstract

Submitted by CALEBE PEREIRA MENDES (calebepm3@hotmail.com) on 2018-12-20T22:35:55Z No. of bitstreams: 1 Tese_V2_CalebePereiraMendes.pdf: 3033125 bytes, checksum: e3da6c11d33e3f19cfe9d3649a0588e5 (MD5) Rejected by Adriana Aparecida Puerta null (dripuerta@rc.unesp.br), reason: Prezado Calebe, O documento enviado para a coleção Campus Unesp Rio Claro foi recusado pelo(s) seguinte(s) motivo(s): - Falta o as palavras chaves em português e inglês, após o Resumo e o Abstract. - Agradecimentos: A Portaria nº 206, de 04/09/2018 Dispõe sobre obrigatoriedade de citação da CAPES nos agradecimentos da seguinte forma: Art. 3º Deverão ser usadas as seguintes expressões, no idioma do trabalho: "O presente trabalho foi realizado com apoio da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Código de Financiamento 001" Agradecemos a compreensão e aguardamos o envio do novo arquivo. Atenciosamente, Biblioteca Campus Rio Claro Repositório Institucional UNESP https://repositorio.unesp.br on 2018-12-21T12:34:20Z (GMT) Submitted by CALEBE PEREIRA MENDES (calebepm3@hotmail.com) on 2018-12-21T16:27:18Z No. of bitstreams: 1 Tese_V2_CalebePereiraMendes.pdf: 3034158 bytes, checksum: 8e31dcfaf8e0b15478c71157ef8fa0c8 (MD5) Approved for entry into archive by Adriana Aparecida Puerta null (dripuerta@rc.unesp.br) on 2019-01-03T17:29:44Z (GMT) No. of bitstreams: 1 mendes_cp_dr_rcla_par.pdf: 1831578 bytes, checksum: f67d60bc6fba7009207d2b9221812121 (MD5) Made available in DSpace on 2019-01-03T17:29:44Z (GMT). No. of bitstreams: 1 mendes_cp_dr_rcla_par.pdf: 1831578 bytes, checksum: f67d60bc6fba7009207d2b9221812121 (MD5) Previous issue date: 2018-12-10 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) O comportamento de uma determinada espécies define a forma e intensidade das interações desta para com o ambiente, com muitas espécies ajustando suas estratégias comportamentais de acordo com o contexto físico e biológico ao seu redor. No entanto, o processo de tomada de decisões, intrínseco a qualquer sistema comportamental, requer que o organismo possua a capacidade de obter, interpretar e processar informações úteis. Devido à grande magnitude e novidade evolutiva dos distúrbios antrópicos, estes são capazes de interferir no processo cognitivo das espécies, interferindo na percepção e avaliação das informações necessárias para a tomada de decisões eficientes, e dessa forma, gerando comportamentos não adaptativos, aumento de mortalidade e interferências nas interações ecológicas das espécies. Dessa forma, o objetivo deste trabalho é avaliar a ocorrência de plasticidade comportamental, em diversas espécies modelo, em resposta a fatores ambientais e atividades antrópicas. Foram realizados dois capítulos experimentais e um capitulo de revisão. O primeiro capitulo foi desenvolvido no Arizona, E.U.A., e avaliou o volume de alimentos estocados pelo esquilo-vermelho-de-Graham Tamiasciurus fremonti grahamensis em resposta a variáveis climáticas, de relevo e vegetação. Foi observado que apenas as fêmeas responderam a variações no relevo e vegetação, mas não a variáveis climáticas, enquanto os machos não responderam a nenhuma variável testada. O segundo capítulo, desenvolvido em São Paulo, Brasil, avaliou o efeito de perturbações antrópicas variadas sobre a atividade circadiana de 17 espécies de mamíferos florestais. Foi observado que 7 espécies responderam a perturbação antrópica, se tornando em média 20% mais noturnas em áreas perturbadas. Tanto espécies diurnas quanto noturnas se tornaram mais noturnas em resposta a perturbações, sendo que espécies caçadas e perseguidas se tornaram mais noturnas do que espécies não caçadas. O terceiro capitulo foi planejado como uma comparação entre o esquilo-vermelho-de-Graham e um esquilo brasileiro, o Guerlinguetus brasiliensis, no entanto, devido à escassez de informações da história natural da segunda espécie, decidiu-se por mapear o atual estado da informação disponível sobre a ecologia de esquilos neotropicais. Assim, foram encontradas 155 publicações, de 15 países, com dados de ecologia para 20 espécies de esquilos que interagiram com 351 outras espécies. Foi observado que esquilos neotropicais tendem a apresentar maiores densidades populacionais em florestas fragmentadas. Também identificamos diversas partes da história natural do táxon que são virtualmente desconhecidas, como por exemplo, a composição da dieta de esquilos dos gêneros Sciurillus e Microsciurus. The behavior of a given species defines the style and intensity of its interactions with the environment, with several species adjusting their behavioral strategies in response to the physical and biological circumstances. However, the decision-making process, intrinsic of any behavioral system, requires the organism to is able of obtain, interpret and process useful information. Due to the large scale and evolutive novelty of the anthropic disturbances, they are able to interfere in the cognitive processes of the species, disrupting the perception and evaluation of the information needed to efficient decision-making, and therefore, cause nonadaptative behaviors, increase in mortality and effects on species ecological interactions. This way, the objective of this study is to evaluate the occurrence of behavioral plasticity, in several model species, in response to environmental factors and anthropic activities. Two experimental chapters and one literature revision was performed. The first chapter was developed in Arizona, U.S.A., and evaluate the amount of food cached by the Mt. Graham red squirrel Tamiasciurus fremonti grahamensis in response to variables of climate, relief and vegetation. It was found that only the females did respond to relief and variations in relief and vegetation, but not climate, while males did not respond to any examined variable. The second chapter, developed in São Paulo, Brazil, evaluate the effect of general anthropic disturbances on dial activity of 17 forest dwelling mammal species. We detected 7 species becoming more nocturnal in response to anthropic disturbance, with a mean nocturnality increase of 20% in disturbed areas. Both diurnal and nocturnal species become more nocturnal, whereas the poached and persecuted species become more nocturnal than nonpoached species. The third chapter was designed as a comparison between the Mt. Graham red squirrel and a Brazilian squirrel, the Guerlinguetus brasiliensis, however, due to the scarcity of natural history information, we decided to map the actual state of knowledge availability about neotropical squirrels. This way, we found 155 publications, from 15 countries, with ecological data for 20 squirrel species, which interacted with 352 other species. We recorded an increase of squirrel population densities in fragmented forests. We also identified several areas of the taxa natural history which are virtually unknown, such the composition of diet of the Sciurillus and Microsciurus genera. CAPES: 168080/2014-1. FAPESP: 2014/01986-0. FAPESP: 2014/09300-0. FAPESP: 2014/23095-0. FAPESP: 2015/22844-1. FAPESP: 2015/18381-6.

Published
2018

4. Invasive wild boar's distribution overlap with threatened native ungulate in Patagonia.

Author

Bercê, William, Bello, Carolina, Mendes, Calebe P, Vancine, Maurício H, Galetti, Mauro, and Ballari, Sebastián A

Subjects
WILD boar, UNGULATES, SPECIES distribution, FOREST conservation, PARK management, PROTECTED areas
Abstract

Wild boar (Sus scrofa) is one of the most damaging invasive species in the world and can have a profound impact on the distribution of native species. Nevertheless, there still are limitations on the species' current fine-scale spatial information, which is needed to develop effective management measures. Here, we used Species Distribution Models (SDMs) and niche overlap analysis to estimate potential conflict areas between the wild boar and the native southern pudu (Pudu puda), which is a bioindicator of the forest conservation status within the Nahuel Huapi National Park (NHNP), Argentina. The two species' environmental niche overlaps by 40%, which results in a wide geographical overlap between wild boar and pudu distributions. The distribution model predicted that the wild boar potential distribution occupies 22% of the national park and overlaps up to 67% with the pudu distribution, which in turn occupies 20% of the park. Based on our models, we classified 12% of the park as extreme management priority areas, because both species are present. High priority areas, where wild boars have the potential to invade but will not overlap with pudu populations, represent 10% of the park. Medium priority areas, where wild boars do not threaten pudu populations, and low priority areas, with no potential presence of either species, are 8% and 68%, respectively. The results of this study show how SDMs developed at local scales can support the management and monitoring of native and invasive species and help guide the allocation of efforts and resources for management actions focused on protected areas. [ABSTRACT FROM AUTHOR]

Published
2021
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5. ATLANTIC MAMMALS: a data set of assemblages of medium‐ and large‐sized mammals of the Atlantic Forest of South America.

Author

Souza, Yuri, Gonçalves, Fernando, Lautenschlager, Laís, Akkawi, Paula, Mendes, Calebe, Carvalho, Mariana M., Bovendorp, Ricardo S., Fernandes‐Ferreira, Hugo, Rosa, Clarissa, Graipel, Maurício Eduardo, Peroni, Nivaldo, Cherem, Jorge José, Bogoni, Juliano André, Brocardo, Carlos Rodrigo, Miranda, João, Zago da Silva, Luciana, Melo, Geruza, Cáceres, Nilton, Sponchiado, Jonas, and Ribeiro, Milton Cezar

Subjects
MAMMALS, SPECIES diversity, TEACHER researchers, MAMMAL conservation, COMMUNITY organization
Abstract

Biodiversity inventories contain important information about species richness, community structure, and composition, and are the first step in developing any conservation and mitigation strategies. The Atlantic Forest of South America is home to around 334 species of small‐, medium‐, and large‐sized mammals, and is currently restricted to less than 12% of its original cover. Here, we present the ATLANTIC MAMMALS, an open data set on information on medium‐ and large‐sized mammal assemblages in the Atlantic Forest of Brazil, Paraguay, and Argentina. A total of 129 studies were compiled, including published and in press peer‐reviewed papers, book chapters, theses and unpublished data. We mapped 244 assemblages, eight orders, 63 genera, and 94 species (24 of which are classified as threatened by the IUCN Red List) distributed in 128 protected and 116 unprotected areas. Species richness of the mammalian assemblages varied from 1 to 39 species (mean 15). The most recorded species in the entire biome was Dasypus novemcinctus, followed by Cerdocyon thous and Procyon cancrivorous. These data can be useful in support of macroecological studies and conservation planning strategies. Please cite this data paper when the data are used in publications. We also request that researchers and teachers inform us of how they are using the data. [ABSTRACT FROM AUTHOR]

Published
2019
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