| Full text | |
| Author(s): |
Ponzio, Marcella do Carmo
;
Pasqualotto, Nielson
;
Alberici, Vinicius
;
Paolino, Roberta Montanheiro
;
Rodrigues, Thiago Ferreira
;
Chiarello, Adriano G.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | JOURNAL OF MAMMALOGY; v. N/A, p. 12-pg., 2023-10-03. |
| Abstract | |
Mammalian carnivores are often vulnerable to the conversion of natural habitat. Although some species might be frequent in anthropogenic areas, it is not entirely clear how they use modified landscapes, particularly in tropical agroecosystems. Here, we investigated how Puma (Puma concolor) and Maned Wolf (Chrysocyon brachyurus) used three disturbed areas in southeastern Brazil. We sampled 205 camera stations and estimated species occupancy (psi) and detection probabilities (p), interpreted as probability of use and frequency of use, respectively. Our models predicted that both species extensively used the study areas (model-averaged probability of use of 0.65 for pumas and 0.50 for maned wolves). Puma frequency of use was higher in stations further from human structures and areas of savanna. Maned Wolf frequency of use was lower in forest-dominated stations and in a more protected and forested study area. Puma probability of use was high in stations closer to watercourses, while Maned Wolf probability of use was higher in unpaved roads and stations farther from human structures. Our findings suggest that pumas and maned wolves may be able to adapt their use of space in agroecosystems featuring riparian corridors and unpaved roads. Nevertheless, our data also reveal possible impacts to carnivore populations in these systems, such as the degradation of riparian environments, road mortality, and human construction avoidance. Thus, some caution is warranted in considering highly modified environments as safe habitats for large carnivores, until further data on the density and vital rates of these species in agricultural-dominated areas have been quantified. Brazilian carnivores in agricultural areas: pumas display affinity for stations closer to watercourses, while maned wolves avoid human structures and use unpaved roads. Both species demonstrate adaptability to agroecosystems; however, concerns arise from habitat degradation and road risks. Apesar de serem particularmente vulneraveis a conversao de habitats naturais, mamiferos da ordem Carnivora sao frequentemente detectados em areas antropicas. Entretanto, ainda nao esta claro como esses animais utilizam areas modificadas, especialmente nos agroecossistemas tropicais. Aqui, investigamos como oncas pardas (Puma concolor) e lobos-guaras (Chrysocyon brachyurus) usam tres areas modificadas no sudeste do Brasil. Usamos armadilhas fotograficas para amostrar 205 pontos e estimar as probabilidades de ocupacao e deteccao das especies - interpretadas como probabilidade de uso (psi) e frequencia de uso (p), respectivamente. Nossos resultados indicam que ambas as especies usam extensivamente as areas de estudo (probabilidade media de uso de 0,65 para a onca e 0,50 para o lobo). A frequencia de uso da onca parda e maior em locais distantes de edificacoes e altamente cobertos por savana. A frequencia de uso do lobo-guara e menor em locais dominados por florestas e na area de estudo mais protegida, porem mais florestada. A probabilidade de uso da onca e mais alta proxima aos cursos d'agua, enquanto a probabilidade de uso do lobo-guara e maior em estradas nao pavimentadas e em locais mais distantes de edificacoes. No seu conjunto, estas descobertas sugerem que oncas pardas e lobos-guaras podem ser capazes de adaptar a sua utilizacao do espaco em agroecossistemas com corredores riparios e atravessados por estradas nao pavimentadas. No entanto, os nossos dados tambem revelam possiveis impactos para as populacoes de carnivoros nesses sistemas, tais como a degradacao dos ambientes riparios, atropelamentos e mudancas comportamentais para evitar a proximidade com construcoes humanas. Dessa forma, devemos ser cautelosos ao considerar os ambientes altamente modificados como habitats seguros para os grandes carnivoros, pelo menos ate que sejam disponibilizados mais dados sobre a densidade, reproducao e sobrevivencia das especies dentro das areas dominadas pela agricultura. (AU) | |
| FAPESP's process: | 13/12914-7 - Remaining biodiversity in permanent preservation areas (PPAs) from the northeast of the state of São Paulo: medium and large sized mammals situation |
| Grantee: | Roberta Montanheiro Paolino |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 19/26334-9 - European hare invasion and its association with landscape heterogeneity and agricultural crops cycle in a biofuel producing zone |
| Grantee: | Nielson Aparecido Pasqualotto Salvador |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 18/11788-1 - European Hare invasion and its association with structure, composition and agricultural crops cycle in the interior of São Paulo |
| Grantee: | Nielson Aparecido Pasqualotto Salvador |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 11/22449-4 - Conservation of the giant-anteater in Cerrado remnants of Northeastern São Paulo State: landscape occupancy in a region of intensive agriculture |
| Grantee: | Adriano Garcia Chiarello |
| Support Opportunities: | Regular Research Grants |