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Abstract:

Agricultural expansion threatens biodiversity due to habitat loss and fragmentation. In the Gran Chaco, a global deforestation hotspot, rampant cropland and pasture expansion raise concerns about the sustainability of these land-use changes. Zoning policies were recently enacted in the Argentine Chaco to balance agriculture and conservation, yet the environmental outcomes of implementing these policies remain unclear. Here, we focused on the province of Formosa (Argentina) to evaluate how fully implementing zoning there would affect forest loss and connectivity, and how multiscale landscape planning could enhance environmental outcomes. Specifically, we simulated potential future forest cover for different spatial planning scenarios to assess the effect of (a) implementing regional corridors and (b) enacting additional policies to minimize forest fragmentation at the plot level, under both high and low deforestation rates. We then quantified forest connectivity and fragmentation using morphological image segmentation and landscape indices. Our results show that implementing regional corridors reduced the extent of potential deforestation by 650,000 ha (43%), and this alone strongly increased forest connectivity compared with scenarios without corridors. However, how deforestation would be carried out at the plot level was critically important. Plot-level spatial planning could have a strong and positive effect on mitigating fragmentation and on maintaining connectivity, even in scenarios with high deforestation rates (i.e., reducing the number of forest fragments by up to 35%, increasing the core forest by up to 6%). Moreover, under high deforestation rates, implementing regional corridors and plot-level design had a strong complementary effect on mitigating forest fragmentation (17% less forest fragments than when implementing either of the two strategies alone). Our analyses clearly highlight the opportunities of multiscale spatial planning and the need to complement broad-scale zoning with plot-level landscape design in order to mitigate the negative impacts of deforestation in the Chaco and other active agricultural frontiers. © 2018 by the author(s).

Registro:

Documento: Artículo
Título:Multiscale spatial planning to maintain forest connectivity in the Argentine Chaco in the face of deforestation
Autor:Torrella, S.A.; Piquer-Rodríguez, M.; Levers, C.; Ginzburg, R.; Gavier-Pizarro, G.; Kuemmerle, T.
Filiación:Grupo de Estudios de Sistemas Ecológicos en Ambientes Agrícolas, Departamento de Ecología, Genética y Evolución-Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Geography Department, Humboldt-University Berlin, Unter den Linden 6, Berlin, 10099, Germany
Instituto de Ecología Regional (IER-CONICET), Universidad Nacional de Tucumán, Tucumán, Argentina
Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Recursos Biológicos-Centro de Investigación en Recursos Naturales (CIRN-IRB), Hurlingham, Buenos Aires, Argentina
Integrative Research Institute on Transformations of Human-Environment Systems (IRI THESys), Humboldt-University Berlin, Unter den Linden 6, Berlin, 10099, Germany
Palabras clave:Agricultural expansion frontiers; Corridors; Deforestation; Forest law; Fragmentation; Gran Chaco; Landscape planning; agricultural management; connectivity; deforestation; forestry policy; fragmentation; landscape planning; spatial planning; Argentina; Chaco [Argentina]
Año:2018
Volumen:23
Número:4
DOI: http://dx.doi.org/10.5751/ES-10546-230437
Título revista:Ecology and Society
Título revista abreviado:Ecol. Soc.
ISSN:17083087
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17083087_v23_n4_p_Torrella

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Citas:

---------- APA ----------
Torrella, S.A., Piquer-Rodríguez, M., Levers, C., Ginzburg, R., Gavier-Pizarro, G. & Kuemmerle, T. (2018) . Multiscale spatial planning to maintain forest connectivity in the Argentine Chaco in the face of deforestation. Ecology and Society, 23(4).
http://dx.doi.org/10.5751/ES-10546-230437
---------- CHICAGO ----------
Torrella, S.A., Piquer-Rodríguez, M., Levers, C., Ginzburg, R., Gavier-Pizarro, G., Kuemmerle, T. "Multiscale spatial planning to maintain forest connectivity in the Argentine Chaco in the face of deforestation" . Ecology and Society 23, no. 4 (2018).
http://dx.doi.org/10.5751/ES-10546-230437
---------- MLA ----------
Torrella, S.A., Piquer-Rodríguez, M., Levers, C., Ginzburg, R., Gavier-Pizarro, G., Kuemmerle, T. "Multiscale spatial planning to maintain forest connectivity in the Argentine Chaco in the face of deforestation" . Ecology and Society, vol. 23, no. 4, 2018.
http://dx.doi.org/10.5751/ES-10546-230437
---------- VANCOUVER ----------
Torrella, S.A., Piquer-Rodríguez, M., Levers, C., Ginzburg, R., Gavier-Pizarro, G., Kuemmerle, T. Multiscale spatial planning to maintain forest connectivity in the Argentine Chaco in the face of deforestation. Ecol. Soc. 2018;23(4).
http://dx.doi.org/10.5751/ES-10546-230437