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Community-based natural resource management (CBNRM) is a major global strategy for enhancing conservation outcomes while also seeking to improve rural livelihoods; however, little evidence of socioeconomic outcomes exists. We present a national-level analysis that empirically estimates socioeconomic impacts of CBNRM across Tanzania, while systematically controlling for potential sources of bias. Specifically, we apply a difference-in-differences model to national-scale, cross-sectional data to estimate the impact of three different CBNRM governance regimes on wealth, food security and child health, considering differential impacts of CBNRM on wealthy and poor populations. We also explore whether or not longer-standing CBNRM efforts provide more benefits than recently-established CBNRM areas. Our results show significant improvements in household food security in CBNRM areas compared with non-CBNRM areas, but household wealth and health outcomes in children are generally not significantly different. No one CBNRM governance regime demonstrates consistently different welfare outcomes than the others. Wealthy households benefit more from CBNRM than poor households and CBNRM benefits appear to increase with longer periods of implementation. Perhaps evidence of CBNRM benefits is limited because CBNRM hasn't been around long enough to yield demonstrable outcomes. Nonetheless, achieving demonstrable benefits to rural populations will be crucial for CBNRM's future success in Tanzania.

Despite expansive research on Amazonian deforestation and its drivers, the role of local politics is not well understood. Using a panel data set that combines municipal-level deforestation and election data from 2002 to 2012, I estimate the effect of an incumbent mayor running for re-election on deforestation rates in election periods. I find that deforestation rates increase 8–10% in election years when an incumbent mayor runs for re-election, an amount equivalent to four percent of the total forest lost since the 2004 elections. Electoral deforestation cycles do not appear to be driven by changes in agricultural policy implementation and activity, but are linked to corruption and campaign finance, suggesting that weak institutional constraints facilitate electoral manipulation of forest resources. This phenomenon is not likely limited to Amazonian forests; re-election incentives could very well lead to misallocation of other natural resources in alternate geographies. [ABSTRACT FROM AUTHOR]

Highlights: [•] Protected area downgrading, downsizing, and degazettement (PADDD) is understudied. [•] With mixed methods, we assess PADDD in Africa, Asia, Latin America, and Caribbean. [•] We identified 543 instances of PADDD across 57 countries, affecting >503,591km2. [•] Primary causes are industrial-scale activities or local land pressures and claims. [•] Most PADDD suggests tradeoffs between conservation goals and other objectives. [Copyright &y& Elsevier]

National parks and other protected areas (PAs) are the foundation of global efforts to conserve biological diversity. Conservation policy and practice assume that PAs are permanent fixtures on the landscape, but scattered evidence points to widespread-yet largely overlooked-PA downgrading, downsizing, and degazettement (PADDD). As a preliminary investigation of PADDD and its implications for conservation science and policy, we explore the published literature and contemporary media reports. We identify 89 historic instances of PADDD, in 27 countries, since 1900. Contemporary accounts reveal that PADDD has recently occurred or is currently under consideration in at least 12 countries worldwide. Proximate causes of PADDD vary widely, but center on access to and use of natural resources. Case studies from India and South America highlight the fact that PAs are socially defined and socially constructed governance regimes, responsive to social pressures-including conservation demands-at local to global scales. PADDD challenges longstanding assumptions underlying conservation policy and practice, including efforts to reduce deforestation and forest degradation (REDD), and underscores the need for resilient and robust conservation strategies. Because many fundamental questions regarding PADDD remain unanswered, further research is required to understand this conservation phenomenon and develop tailored policy responses. [ABSTRACT FROM AUTHOR]