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Protected area types, strategies and imp...

Protected area types, strategies and impacts in Brazil’s Amazon: public PA strategies do not yield a consistent ranking of PA types by impact

Alexander Pfaff, Juan Robalino, Catalina Sandoval, Diego Herrera Philosophical Transactions B 2015 volume 370 (online http://dx.doi.org/10.1098/rstb.2014.0273) The leading policy to conserve forest is protected areas (PAs). Yet, they are not a single tool: land users and uses vary by PA type; and public PA strategies vary in the extent of each type, as well as […]

Estimating the Impacts of Local Policy I...

Estimating the Impacts of Local Policy Innovation: the synthetic control method applied to tropical deforestation

Erin O. Sills, Diego Herrera, A. Justin Kirkpatrick, Amintas Brandao Jr., Rebecca Dickson, Simon Hall, Subhrendu Pattanayak, David Shoch, Mariana Vedoveto, Luisa Young, Alexander Pfaff PLOS ONE 2015 (forthcoming) DOI:10.1371/journal.pone.0132590 Quasi-experimental methods increasingly are used to evaluate the impacts of conservation interventions by generating credible estimates of counterfactual baselines. These methods generally require large samples […]

Protected Areas’ Impacts on Brazilian Am

Protected Areas’ Impacts on Brazilian Amazon Deforestation: examining conservation – development interactions to inform planning

Alexander Pfaff, Juan Robalino, Diego Herrera, Catalina Sandoval PLOS ONE 2015 (forthcoming) DOI:10.1371/journal.pone.0129460 Protected areas are the leading forest conservation policy for species and ecoservices goals and they may feature in climate policy if countries with tropical forest rely on familiar tools. For Brazil’s Legal Amazon, we estimate the average impact of protection upon deforestation […]

Governance, Location and Avoided Defores...

Governance, Location and Avoided Deforestation from Protected Areas: greater restrictions can have lower impact, due to differences in location

Alexander Pfaff, Juan Robalino, Eirivelthon Lima, Catalina Sandoval, Diego Herrera World Development 2014 volume 55, pp. 7–20 For Acre, in the Brazilian Amazon, we find that protection types with differences in governance, including different constraints on local economic development, also differ in their locations. Taking this into account, we estimate the deforestation impacts of these […]

Unequal Information, Unequal Allocation:...

Unequal Information, Unequal Allocation: bargaining field experiments in NE Brazil

Alexander Pfaff, Maria Alejandra Velez, Renzo Taddei, Kenneth Broad Environmental Science & Policy 26 (2013) 90-101 We assess how unequal information affects the bargaining within resource allocation, a stakeholder interaction that is critical for climate adaptation within the water sector. Motivated by water allocation among unequal actors in NE Brazil, within Ceara´ State, we employ […]

Efficiency and equity in negotiated reso...

Efficiency and equity in negotiated resource transfers: contributions and limitations of trust with limited contracts

Alexander Pfaff, Maria Alejandra Velez Ecological Economics 74 (2012) 55–63 We consider a case of water reallocation in Brazil, one which has numerous analogs elsewhere. To permit empirical study of the effects of institutions that can facilitate or restrict  allocations, we conducted field experiments to explore trust’s potential when resource contracts are limited, using a […]

Regional Interdependence and Forest “Tra

Regional Interdependence and Forest “Transitions”: substitute deforestation limits the relevance of local reversals

Alexander Pfaff, Robert Walker Land Use Policy 2010 27:119–129 Using case studies and concepts we suggest that constraints upon aggregate or global forest transition are significantly more severe than those upon local forest reversals. The basic reason is that one region’s reversal can be facilitated by other regions that supply resources and goods, reducing the […]

Indigenous Lands, Protected Areas, and S...

Indigenous Lands, Protected Areas, and Slowing Climate Change

Taylor H. Ricketts, Britaldo Soares-Filho, Gustavo A.B. da Fonseca, Daniel Nepstad, Alexander Pfaff, Annie Petsonk, Anthony Anderson, Doug Boucher, Andrea Cattaneo, Marc Conte, Ken Creighton, Lawrence Linden, Claudio Maretti, Paulo Moutinho, Roger Ullman, Ray Victurine PLoS Biol 2010 8(3): e1000331. doi:10.1371/journal.pbio.1000331 Forest clearing and degradation account for roughly 15% of global greenhouse gas emissions, more […]

Road Impacts in Brazilian Amazonia

Road Impacts in Brazilian Amazonia

Alexander Pfaff, Alisson Barbieri, Thomas Ludewigs, Frank Merry, Stephen Perz, Eustaquio Reis Chapter in “Amazonia and Global Change” book (American Geophysical Union, linked to the NASA LBA project) We examine the evidence on Amazonian road impacts with a strong emphasis on context. Impacts of a new road, on either deforestation or socioeconomic outcomes, depend upon […]

Road Investments, Spatial Spillovers and...

Road Investments, Spatial Spillovers and Deforestation in the Brazilian Amazon

Alexander Pfaff, Juan Robalino, Robert Walker, Steven Aldrich, Marcellus Caldas, Eustaquio Reis, Stephen Perz, Claudio Bohrer, Eugenio Arima, William Laurance, Kathryn Kirby Journal of Regional Science 2007 volume 47, no. 1, 2007, pp. 109–123 Understanding the impact of road investments on deforestation is part of a complete evaluation of the expansion of infrastructure for development.We […]

Climate, Stream Flow Prediction and Wate...

Climate, Stream Flow Prediction and Water Management in Northeast Brazil: societal trends and forecast value

Kenneth Broad, Alexander Pfaff, Renzo Taddei, Sankar Arumugam, Upmanu Lall, Francisco Assis de Souza Filho Climatic Change (2007) 84:217–239 We assess the potential benefits from innovative forecasts of the stream flows that replenish reservoirs in the semi-arid state of Ceará, Brazil. Such forecasts have many potential applications. In Ceará, they matter for both water-allocation and […]

What Drives Deforestation in the Brazili...

What Drives Deforestation in the Brazilian Amazon?  Evidence from Satellite and Socioeconomic Data

Alexander Pfaff Journal of Environmental Economics and Management 1999 volumne 37, pp. 26-43 While previous empirical analysis of deforestation focused on population, this paper builds from a model of land use which suggests many determinants of deforestation in the Brazilian Amazon. I derive a deforestation equation from this model and test a number of those […]