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Designing optimal human‐modified landscapes for forest biodiversity conservation
Authors:Víctor Arroyo‐Rodríguez  Lenore Fahrig  Marcelo Tabarelli  James I Watling  Lutz Tischendorf  Maíra Benchimol  Eliana Cazetta  Deborah Faria  Inara R Leal  Felipe P L Melo  Jose C Morante‐Filho  Brulio A Santos  Ricard Arasa‐Gisbert  Norma Arce‐Pea  Martín J Cervantes‐Lpez  Sabine Cudney‐Valenzuela  Carmen Galn‐Acedo  Miriam San‐Jos  Ima C G Vieira  JW Ferry Slik  A Justin Nowakowski  Teja Tscharntke
Institution:Víctor Arroyo‐Rodríguez,Lenore Fahrig,Marcelo Tabarelli,James I. Watling,Lutz Tischendorf,Maíra Benchimol,Eliana Cazetta,Deborah Faria,Inara R. Leal,Felipe P. L. Melo,Jose C. Morante‐Filho,Bráulio A. Santos,Ricard Arasa‐Gisbert,Norma Arce‐Peña,Martín J. Cervantes‐López,Sabine Cudney‐Valenzuela,Carmen Galán‐Acedo,Miriam San‐José,Ima C. G. Vieira,J.W. Ferry Slik,A. Justin Nowakowski,Teja Tscharntke
Abstract:Agriculture and development transform forest ecosystems to human‐modified landscapes. Decades of research in ecology have generated myriad concepts for the appropriate management of these landscapes. Yet, these concepts are often contradictory and apply at different spatial scales, making the design of biodiversity‐friendly landscapes challenging. Here, we combine concepts with empirical support to design optimal landscape scenarios for forest‐dwelling species. The supported concepts indicate that appropriately sized landscapes should contain ≥ 40% forest cover, although higher percentages are likely needed in the tropics. Forest cover should be configured with c. 10% in a very large forest patch, and the remaining 30% in many evenly dispersed smaller patches and semi‐natural treed elements (e.g. vegetation corridors). Importantly, the patches should be embedded in a high‐quality matrix. The proposed landscape scenarios represent an optimal compromise between delivery of goods and services to humans and preserving most forest wildlife, and can therefore guide forest preservation and restoration strategies.
Keywords:Biodiversity crisis  extinction threshold  habitat amount hypothesis  habitat fragmentation  land sparing  land‐use planning  matrix quality  SLOSS debate
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