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Deforestation Spillovers from Costa Rica...

Deforestation Spillovers from Costa Rican Protected Areas

Juan Robalino, Alexander Pfaff, Laura Villalobos LACEEP Working Paper Series WP78 Robalino-et-al-Park-Spillovers-LACEEP-WP78.Spillovers can significantly reduce or enhance the effects of land-use policies, yet there exists little rigorous evidence concerning their magnitudes. We examine how national parks within Costa Rica affect the clearing of forest nearby. We find that average deforestation spillover impacts are not significant […]

Scaling up conservation impact in Madaga...

Scaling up conservation impact in Madagascar

Theo Gimenez, Alexander Pfaff, Ranaivo Rasolofoson, Lucas Joppa Draft working paper, Duke University. Ten years ago, Madagascar’s government committed to drastically scale up the nation’s protected-area coverage from ~3% to 10% of its area. We ask how successful this PA expansion is likely to be in terms of reducing deforestation (and, thereby, increasing the conservation […]

Protected Areas’ Impacts Upon Land Cover

Protected Areas’ Impacts Upon Land Cover Within Mexico: the need to add politics and dynamics to static land-use economics

Alexander Pfaff, Franciso Santiago-Avila, Lucas Joppa Draft working paper, Duke University. Incentives for REDD − i.e., reductions in emissions from deforestation and degradation − motivate application of static economic modeling of land use to assess heterogeneity over space in the business-as-usual baselines for land use required for forest policy evaluations. That some forested locations face […]

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 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 […]

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 […]

Paper Park Performance: Mexico’s Natural

Paper Park Performance: Mexico’s Natural Protected Areas in the 1990s

Allen Blackman, Alexander Pfaff, Juan Robalino Global Environmental Change 31 (2015) pp50-61 Although developing countries have established scores of new protected areas over the past three decades, they often amount to little more than ‘‘paper parks’’ that are chronically short of the financial, human, and technical resources needed for effective management. It is not clear […]

Evaluating Interactions of Forest Conser...

Evaluating Interactions of Forest Conservation Policies on Avoided Deforestation

Juan Robalino, Catalina Sandoval, David N. Barton, Adriana Chacon, Alexander Pfaff PLoS ONE 10(4):e0124910 (2015) doi:10.1371/journal.pone.0124910 We estimate the effects on deforestation that have resulted from policy interactions between parks and payments and between park buffers and payments in Costa Rica between 2000 and 2005. We show that the characteristics of the areas where protected […]

Evolving Protected-Areas Impacts in Pana...

Evolving Protected-Areas Impacts in Panama: impact shifts show that plans require anticipation

Akiko Haruna, Alexander Pfaff, Sander van den Ende, Lucas Joppa Environmental Research Letters 9 (2014) Protected areas (PAs) are the leading forest conservation policy, so accurate evaluation of future PA impact is critical in conservation planning. Yet by necessity impact evaluations use past data. Here we argue that forwardlooking plans should blend such evaluations with […]

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 […]

Global protected area impacts

Global protected area impacts

Lucas N. Joppa, Alexander Pfaff Proceedings of the Royal Society B 2010 doi:10.1098/rspb.2010.1713 Protected areas (PAs) dominate conservation efforts. They will probably play a role in future climate policies too, as global payments may reward local reductions of loss of natural land cover. We estimate the impact of PAs on natural land cover within each […]

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 […]

Reassessing the forest impacts of protec...

Reassessing the forest impacts of protection: The challenge of nonrandom location and a corrective method

Lucas Joppa, Alexander Pfaff Ann. N.Y. Acad. Sci. 1185 (2010) 135–149 Protected areas are leading tools in efforts to slow global species loss and appear also to have a role in climate change policy. Understanding their impacts on deforestation informs environmental policies. We review several approaches to evaluating protection’s impact on deforestation, given three hurdles […]

Park Location Affects Forest Protection:...

Park Location Affects Forest Protection: Land Characteristics Cause Differences in Park Impacts across Costa Rica

Alexander Pfaff, Juan Robalino, G. Arturo Sanchez-Azofeifa, Kwaw S. Andam, Paul J. Ferraro The B.E. Journal of Economic Analysis & Policy: Vol. 9: Iss. 2 (Contributions), Article 5. To support conservation planning, we ask whether a park’s impact on deforestation rates varies with observable land characteristics that planners could use to prioritize sites. Using matching […]

High and Far: Biases in the Location of ...

High and Far: Biases in the Location of Protected Areas

Lucas N. Joppa, Alexander Pfaff PLoS ONE 2009 4(12): e8273. doi:10.1371/journal.pone.0008273 Background: About an eighth of the earth’s land surface is in protected areas (hereafter ‘‘PAs’’), most created during the 20th century. Natural landscapes are critical for species persistence and PAs can play a major role in conservation and in climate policy. Such contributions may […]

Human choices and policies’ impacts on e

Human choices and policies’ impacts on ecosystem services: improving evaluations of payment and park effects on conservation and carbon

Alexander Pfaff, Juan Robalino Engel, S. and C. Palmer, editors, “Avoided Deforestation: Prospects for Mitigating Climate Change”, Routledge Explorations in Environmental Economics 2009 This chapter conveys why human choices complicate correct evaluations of impacts. Unobservable land choices, choices affecting policy location and interactions among choices complicate both ex post impact evaluation and ex ante policy […]

Measuring the effectiveness of protected...

Measuring the effectiveness of protected-area networks in reducing deforestation

Kwaw Andam, Paul Ferraro, Alexander Pfaff, Juan Robalino, G. Arturo Sanchez-Azofeifa PNAS 105(42):16089-16094 Global efforts to reduce tropical deforestation rely heavily on the establishment of protected areas. Measuring the effectiveness of these areas is difficult because the amount of deforestation that would have occurred in the absence of legal protection cannot be directly observed. Conventional […]

Deforestation pressure and biological re...

Deforestation pressure and biological reserve planning: a conceptual approach and an illustrative application for Costa Rica

Alexander Pfaff, G. Arturo Sanchez-Azofeifa Resource and Energy Economics 26 (2004) 237–254 An index of ‘deforestation pressure’ is suggested as useful for reserve planning alongside the currently used information on the species present at candidate sites. For any location, the index value is correlated with threats to habitat and thus also survival probabilities over time […]

Integrity and Isolation of Costa Rica’s

Integrity and Isolation of Costa Rica’s National Parks and Biological Reserves: examining the dynamics of land-cover change

G. Arturo Sanchez-Azofeifa, Gretchen C. Daily, Alexander Pfaff, Christopher Busch Biological Conservation 109 (2003) 123–135 The transformation and degradation of tropical forest is thought to be the primary driving force in the loss of biodiversity worldwide. Developing countries are trying to counter act this massive lost of biodiversity by implementing national parks and biological reserves. […]