Sustaining protected areas: Identifying and controlling deforestation and forest degradation drivers in the Ankasa Conservation Area, Ghana

Although protected areas in Africa contain possibly the highest repositories of carbon and thus can play a role in mitigating the effects of climate change through carbon sequestration, they are threatened due to increasing levels of deforestation and forest degradation (DFD). However, little information is available on the on-site causes of DFD in these areas. This paper estimates the levels of DFD and identifies the drivers in the Ankasa Conservation Area (ACA) in Ghana as a case study. A survey was used to identify both direct and underlying factors that promote the DFD. The extent of deforestation was estimated using satellite images. The survey data were analyzed using rankings and ordinal logistic regression techniques, while digital image classification and change detection were used to analyze land cover changes. The results show that DFD occurred at a higher rate in the periphery of the ACA compared to the core-protected and the farthest areas. Agricultural and wood harvesting activities were the main direct causes of DFD. Poverty and large in-migrations of people for cocoa farming were important underlying economic and population growth factors. To address these problems and enable ACA to contribute more to biodiversity conservation and climate change mitigation, the community resource management institutions should be fully adopted and strengthened and priority given to livelihood improvement and ecosystem services provision in the periphery of the ACA.

[1]  G. L. Schmidt,et al.  A multi‐scale segmentation approach to filling gaps in Landsat ETM+ SLC‐off images , 2007 .

[2]  E. Lambin,et al.  Proximate Causes and Underlying Driving Forces of Tropical Deforestation , 2002 .

[3]  K. Chomitz,et al.  Protected area effectiveness in reducing tropical deforestation : a global analysis of the impact of protection status , 2009 .

[4]  Dk Attuaquayefio,et al.  An overview of biodiversity conservation in Ghana: Challenges and prospects , 2009 .

[5]  C. Justice,et al.  Quantifying forest cover loss in Democratic Republic of the Congo, 2000–2010, with Landsat ETM + data , 2012 .

[6]  Lauren Coad,et al.  Protecting the future: Carbon, forests, protected areas and local livelihoods , 2008 .

[7]  K. Willis,et al.  Biodiversity and Climate Change , 2009, Science.

[8]  C. Braak,et al.  Complex contexts and dynamic drivers: understanding four decades of forest loss and recovery in an East African protected area , 2013 .

[9]  U Grouven,et al.  Using binary logistic regression models for ordinal data with non-proportional odds. , 1998, Journal of clinical epidemiology.

[10]  Mark Aldrich,et al.  Assessing environment and development outcomes in conservation landscapes , 2007, Biodiversity and Conservation.

[11]  Bruno Verbist,et al.  Factors driving land use change: Effects on watershed functions in a coffee agroforestry system in Lampung, Sumatra , 2005 .

[12]  G. Asner,et al.  Land-Use Allocation Protects the Peruvian Amazon , 2007, Science.

[13]  J. Sayer,et al.  Improving the effectiveness of interventions to balance conservation and development: a conceptual framework , 2007 .

[14]  M. Hansen,et al.  Securing tropical forest carbon: the contribution of protected areas to REDD , 2010, Oryx.

[15]  L. Agbosu The Origins of Forest Law and Policy in Ghana during the Colonial Period , 1983, Journal of African Law.

[16]  K. Brandon,et al.  Lessons for REDD+ from protected areas and integrated conservation and development projects , 2009 .

[17]  E. Ostrom,et al.  Explaining Deforestation: The Role of Local Institutions , 1998 .

[18]  Dilys Roe,et al.  Community management of natural resources in Africa: impacts, experiences and future directions. , 2009 .

[19]  R. Fisher,et al.  Small changes for big impacts : lessons for landscapes and livelihoods from the Wassa Amenfi West Landscape, Ghana , 2012 .

[20]  T. Sunderland,et al.  Conservation and development in tropical forest landscapes: a time to face the trade-offs? , 2007, Environmental Conservation.

[21]  B. Fisher,et al.  Poverty and biodiversity: Measuring the overlap of human poverty and the biodiversity hotspots , 2007 .

[22]  Grace Bandoh Conservation and Natural Resource Management in the Ankasa Resource Reserve, Ghana , 2010 .

[23]  I. Lysenko,et al.  Carbon Storage in Protected Areas – Technical Report , 2008 .

[24]  A. Contreras-Hermosilla The underlying causes of forest decline , 2000 .

[25]  T. M. Lillesand,et al.  Remote Sensing and Image Interpretation , 1980 .

[26]  P. Ferraro,et al.  Measuring the effectiveness of protected area networks in reducing deforestation , 2008, Proceedings of the National Academy of Sciences.

[27]  Anton Vrieling,et al.  Migration and environment in Ghana: a cross-district analysis of human mobility and vegetation dynamics , 2010 .

[28]  John R. Jensen Introductory Digital Image Processing , 2004 .

[29]  M. Garzuglia,et al.  Changes in Forest Area in Africa 1990–2005 , 2006 .

[30]  L. Verchot,et al.  Analysing REDD+: challenges and choices. , 2012 .

[31]  M. Peralvo,et al.  Coupling Community Heterogeneity and Perceptions of Conservation in Rural South Africa , 2010 .

[32]  M. Knudsen Making a living in the cocoa frontier, Western Ghana: Diversifying incomes in a cocoa economy , 2007 .

[33]  M. Leach,et al.  Reframing Deforestation: Global Analyses and Local Realities: Studies in West Africa , 1998 .

[34]  S. Bajracharya,et al.  Learning from Community Participation in Conservation Area Management , 2007 .

[35]  K. Brandon,et al.  The role of protected areas in conserving biodiversity and sustaining local livelihoods , 2005 .

[36]  David Lamb,et al.  Regreening the Bare Hills: Tropical Forest Restoration in the Asia-Pacific Region , 2010 .

[37]  H. Jachmann Monitoring law-enforcement performance in nine protected areas in Ghana , 2008 .

[38]  Ross W. Gorte,et al.  Carbon Sequestration in Forests , 2009 .

[39]  Matthew C. Hansen,et al.  The global Landsat imagery database for the FAO FRA remote sensing survey , 2011, Int. J. Digit. Earth.

[40]  J. Terborgh,et al.  Making parks work: strategies for preserving tropical nature. , 2002 .

[41]  W. Hawthorne,et al.  Forest Protection in Ghana: With Particular Reference to Vegetation and Plant Species , 1995 .

[42]  A. Pappinen,et al.  Role of tenure insecurity in deforestation in Ghana's high forest zone , 2012 .