Indirect effects of habitat loss via habitat fragmentation: A cross-taxa analysis of forest-dependent species

Thomas Püttker, Renato Crouzeilles, Mauricio Almeida-Gomes, Marina Schmoeller, Daniel Maurenza, Helena Alves-Pinto, Renata Pardini, Marcus V. Vieira, Cristina Banks-Leite, Carlos R. Fonseca, Jean Paul Metzger, Gustavo M. Accacio, Eduardo R. Alexandrino, Camila S. Barros, Juliano A. Bogoni, Danilo Boscolo, Pedro H. S. Brancalion, Adriana A. Bueno, Elaine C.B. Cambui, Gustavo R. CanaleRui Cerqueira, Ricardo G. Cesar, Gabriel D. Colletta, Ana C. Delciellos, Marianna Dixo, Candelaria Estavillo, Carolina F. Esteves, Fábio Falcão, Fabiano T. Farah, Deborah Faria, Katia M. P. M. B. Ferraz, Silvio F. B. Ferraz, Patricia A. Ferreira, Mauricio E. Graipel, Carlos E. V. Grelle, Malva I. M. Hernández, Natalia Ivanauskas, Rudi R. Laps, Inara R. Leal, Marilia M. Lima, Marilia B. Lion, Marcelo Magioli, Luiz F. S. Magnago, Julia R. A. S. Mangueira, Euvaldo Marciano-Jr, Eduardo Mariano-Neto, Marcia C. M. Marques, Sebastião V. Martins, Marlla A. Matos, Fabio A. R. Matos, Jeanette I. Miachir, José M. Morante-Filho, Natalie Olifiers, Luiz G. R. Oliveira-Santos, Mateus L. B. Paciencia, Adriano P. Paglia, Marcelo Passamani, Carlos A. Peres, Clarissa M. Pinto Leite, Tiago J. Porto, Luciano C. A. Querido, Luciana C. Reis, Andréia A. Rezende, Dary M. G. Rigueira, Pedro L. B. Rocha, Larissa Rocha-Santos, Ricardo R. Rodrigues, Rafael A. S. Santos, Juliana S. Santos, Maxwell S. Silveira, Marcelo Simonelli, Marcelo Tabarelli, Rodrigo N. Vasconcelos, Blandina F. Viana, Emerson M. Vieira , Jayme A. Prevedello

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Recent studies suggest that habitat amount is the main determinant of species richness, whereas habitat fragmentation has weak and mostly positive effects. Here, we challenge these ideas using a multi-taxa database including 2230 estimates of forest-dependent species richness from 1097 sampling sites across the Brazilian Atlantic Forest biodiversity hotspot. We used a structural equation modeling approach, accounting not only for direct effects of habitat loss, but also for its indirect effects (via habitat fragmentation), on the richness of forest-dependent species. We reveal that in addition to the effects of habitat loss, habitat fragmentation has negative impacts on animal species richness at intermediate (30–60%) levels of habitat amount, and on richness of plants at high (>60%) levels of habitat amount, both of which are mediated by edge effects. Based on these results, we argue that dismissing habitat fragmentation as a powerful force driving species extinction in tropical forest landscapes is premature and unsafe.

Original languageEnglish
Article number108368
JournalBiological Conservation
Volume241
Early online date19 Dec 2019
DOIs
Publication statusPublished - 1 Jan 2020

Keywords

  • AMOUNT HYPOTHESIS
  • Atlantic forest
  • BETA-DIVERSITY
  • BIODIVERSITY
  • BRAZILIAN ATLANTIC FOREST
  • DIVERSITY PATTERNS
  • EDGE
  • Edge effects
  • Habitat amount hypothesis
  • Habitat fragmentation
  • Habitat loss
  • Hierarchical modeling
  • LANDSCAPE-LEVEL
  • MAMMALS
  • NATIVE VEGETATION
  • RESPONSES

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