English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/210109
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Increasing synergistic effects of habitat destruction and hunting on mammals over three decades in the Gran Chaco

AuthorsRomero-Muñoz, Alfredo; Benítez-López, Ana ; Zurell, Damaris; Baumann, Matthias; Camino, Micaela; Decarre, Julieta; Castillo, Hugo del; Giordano, Anthony J.; Gómez-Valencia, Bibiana; Levers, Christian; Noss, Andrew J.; Quiroga, Verónica; Thompson, Jeffrey J.; Torres, Ricardo; Velilla, Marianela; Weiler, Andrea; Kuemmerle, Tobias
KeywordsConservation planning
Defaunation
Deforestation
Habitat loss
Land-use change
Overexploitation
Issue Date2020
PublisherWiley-Blackwell
CitationEcography, 43: 1-20 (2020)
Abstractthey co-occur, their combined impact is often larger than their individual one. Yet, detailed knowledge of the spatial footprints of these threats is lacking, including where they overlap and how they change over time. These knowledge gaps are real barriers for effective conservation planning. Here, we develop a novel approach to reconstruct the individual and combined footprints of both threats over time. We combine satellitebased land-cover change maps, habitat suitability models and hunting pressure models to demonstrate our approach for the community of larger mammals (48 species > 1 kg) across the 1.1 million km2 Gran Chaco region, a global deforestation hotspot covering parts of Argentina, Bolivia and Paraguay. This provides three key insights. First, we find that the footprints of habitat destruction and hunting pressure expanded considerably between 1985 and 2015, across ~40% of the entire Chaco – twice the area affected by deforestation. Second, both threats increasingly acted together within the ranges of larger mammals in the Chaco (17% increase on average, ± 20% SD, cumulative increase of co-occurring threats across 465 000 km2), suggesting large synergistic effects. Conversely, core areas of high-quality habitats declined on average by 38%. Third, we identified remaining priority areas for conservation in the northern and central Chaco, many of which are outside the protected area network. We also identify hotspots of high threat impacts in central Paraguay and northern Argentina, providing a spatial template for threat-specific conservation action. Overall, our findings suggest increasing synergistic effects between habitat destruction and hunting pressure in the Chaco, a situation likely common in many tropical deforestation frontiers. Our work highlights how threats can be traced in space and time to understand their individual and combined impact, even in situations where data are sparse
Publisher version (URL)http://dx.doi.org/10.1111/ecog.05053
URIhttp://hdl.handle.net/10261/210109
DOI10.1111/ecog.05053
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
ecog.05053.pdf4,18 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.