What, where, and how: a spatiotemporally explicit analysis of the drivers of habitat loss within the range of maned three‐toed sloths (Bradypus torquatus and Bradypus crinitus)

Author:

Santos Paloma M.12ORCID,Bogoni Juliano A.345ORCID,Chiarello Adriano G.6ORCID

Affiliation:

1. Instituto Nacional da Mata Atlântica (INMA) Santa Teresa Espirito Santo 29650‐000 Brazil

2. Instituto de Pesquisa e Conservação de Tamanduás no Brasil Ilhéus Bahia 45655‐718 Brazil

3. Programa de Pós‐Graduação em Ecologia e Conservação Universidade Federal de Mato Grosso do Sul (UFMS) Campo Grande Mato Grosso do Sul 79070‐900 Brazil

4. Laboratório de Ecologia, Manejo e Conservação de Fauna Silvestre (LEMaC), Departamento de Ciências Florestais, Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ) Universidade de São Paulo (USP) Piracicaba São Paulo 13418‐900 Brazil

5. Laboratório de Mastozoologia Centro de Pesquisade Limnologia, Biodiversidade e Etnobiologia do Pantanal Universidade do Estado de Mato Grosso (UNEMAT) Cáceres 78200‐000 Mato Grosso Brazil

6. Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto Universidade de São Paulo (USP) Ribeirão Preto São Paulo 14040‐901 Brazil

Abstract

Abstract The first step towards understanding the conservation situation and informing conservation decision‐making is to identify the habitat loss drivers. However, for nearly all tropical biota, there is a glaring lack of information on the spatiotemporal patterns of anthropogenic drivers. Our objective was to analyse the spatial and temporal distribution of the main anthropogenic drivers of habitat loss for Bradypus torquatus and Bradypus crinitus, two endangered and endemic species to the Brazilian Atlantic Forest. We used land‐use information associated with seven major IUCN‐based threats to sloths, covering a three‐generation time window (1988–2020), to quantify the current area occupied, temporal changes, heterogeneity, and intensity of drivers across species distributions. We found that cattle farming and ranching dominate the range of both species (from 49% to 56%) and cover an area larger than the remaining native forest. Other drivers also represent important spatial and temporal features of land conversion across species distributions. Driven mainly by livestock expansion, both sloth species have experienced a significant loss of forest cover (Bradypus torquatus – 659098.70 ha; Bradypus crinitus – 139013.20 ha) in the Brazilian Atlantic forest. Overall, Bradypus torquatus showed a higher rate of deforestation than forest regeneration, whereas forest gains outweighed habitat loss for Bradypus crinitus. Our results show that a substantial area of native forest – essential for strictly arboreal species – is being continuously replaced by cattle ranching and agricultural activities, which may lead to population isolation and decline, threatening the long‐term population viability.

Funder

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Publisher

Wiley

Subject

Agricultural and Biological Sciences (miscellaneous),Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics

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