James Hafner - Academia.edu (original) (raw)
Papers by James Hafner
The Philippines is among the most endemic-rich areas for all global biodiversity hotspots. Conser... more The Philippines is among the most endemic-rich areas for all global biodiversity hotspots. Conserving that biodiversity presents multi-scaled challenges including the critical need for habitat and species level documentation as a basis for identifying conservation targets. This paper contributes to that need by describing the use of computer modeling tools to synthesize and evaluate data on the status and threats to the Philippine Eagle Pithecophaga jefferyi in the Mt. Hamiguitan Protected Area, one of the key biodiversity areas in the Eastern Mindanao Biodiversity Corridor (EMBC). A Composite Bio-geographic Analysis (CBA) model was used to model the dynamics and interrelationships between species distribution, nest, habitat and land use change, population distribution and access to the PA. The CBA integrates biodiversity data, change probability, regression analysis, geographic modification algorithms and remotely sense imagery was developed for this purpose. A composite Threat profile or Areas of Critical Concern derived from this analysis identifies locations where one or more threat variables impinge upon Nest Habitat and/or the Mt. Hemaguitan Protected Area. This profile clearly defined areas where population pressure, access and declines in nest habitat are associated and pose growing threats to the integrity of Eagle habitat in Mt. Hamiguitan. This analysis has illustrated the benefits of computer modeling of biodiversity dynamics and reinforced the necessity for species level documentation as a foundation for defining conservation targets.
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, a... more JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
The Journal of Asian Studies, 1971
and derived much help from this position and from my colleagues. To all these organisations which... more and derived much help from this position and from my colleagues. To all these organisations which made the work possible I wish to express my thanks. Some six pages of the text of the book are appearing more or less simultaneously, in my chapter on Thai Agriculture in R. T. Shand's book on The Development of Asian Agriculture' , tables 2.1 and 9.1 and parts of some other tables are also used in that chapter. Tables 2.3 and 4.3 and 4 are in large part taken from tables previously
Geoforum, 1990
The accelerated rate of global forest depletion poses a series of complex problems for developmen... more The accelerated rate of global forest depletion poses a series of complex problems for development planners and resource managers in many developing nations. Among the issues being confronted are the need for foresters to gain new skills in managing human resources, design forest use systems which are both productive and sustainable, and to insure that the benefits of these systems are disrtibuted more equitably. In the last quarter of a century reserved forest lands in Thailand have been seriously degraded through deforestation, overcutting, and the illegal encroachment of poor and landless farmers. To counter these forces the government proposed two new forest management programs in 1975 which would grant certificates of use or limited land use rights to some degraded forest land in areas of national reserved forest. This paper examines the use of this policy in the Forest Village and National Forest Land Allotment Projects in northeast Thailand. Since their implementation in the Dong Mun National Reserved Forest 8 years ago, these projects have been plagued with conflicts over de jure and de facto land rights, public misperceptions about the government's grant of amnesty to illegal forest residents, problems controlling immigration, and the small 2.4 ha land allotments given to project participants. These conditions have produced unequal access to and distribution of land, allotment of land poorly suited for agriculture, the destruction of reforestation plots, continued degradation of reserved forest, and a pronounced pattern of social and economic inequality within and between the villages participating in both projects. We argue that these problems are fundamentally caused by government failures to correctly assess population pressures on land in the northeast and to modify program design to better fit community needs, capabilities, and insure equitability in the distribution of benefits introduction The need for improved forest resource management has become a key concern among planners and resource managers in many developing nations. The importance of this issue is nowhere more apparent than in the rate at which forests in the developing world are being degraded. Recent estimates place the level of global forest degradation at 11 million ha
Community Development Journal, 1995
Community Development Journal, 1987
The Philippines is among the most endemic-rich areas for all global biodiversity hotspots. Conser... more The Philippines is among the most endemic-rich areas for all global biodiversity hotspots. Conserving that biodiversity presents multi-scaled challenges including the critical need for habitat and species level documentation as a basis for identifying conservation targets. This paper contributes to that need by describing the use of computer modeling tools to synthesize and evaluate data on the status and threats to the Philippine Eagle Pithecophaga jefferyi in the Mt. Hamiguitan Protected Area, one of the key biodiversity areas in the Eastern Mindanao Biodiversity Corridor (EMBC). A Composite Bio-geographic Analysis (CBA) model was used to model the dynamics and interrelationships between species distribution, nest, habitat and land use change, population distribution and access to the PA. The CBA integrates biodiversity data, change probability, regression analysis, geographic modification algorithms and remotely sense imagery was developed for this purpose. A composite Threat profile or Areas of Critical Concern derived from this analysis identifies locations where one or more threat variables impinge upon Nest Habitat and/or the Mt. Hemaguitan Protected Area. This profile clearly defined areas where population pressure, access and declines in nest habitat are associated and pose growing threats to the integrity of Eagle habitat in Mt. Hamiguitan. This analysis has illustrated the benefits of computer modeling of biodiversity dynamics and reinforced the necessity for species level documentation as a foundation for defining conservation targets.
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, a... more JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
The Journal of Asian Studies, 1971
and derived much help from this position and from my colleagues. To all these organisations which... more and derived much help from this position and from my colleagues. To all these organisations which made the work possible I wish to express my thanks. Some six pages of the text of the book are appearing more or less simultaneously, in my chapter on Thai Agriculture in R. T. Shand's book on The Development of Asian Agriculture' , tables 2.1 and 9.1 and parts of some other tables are also used in that chapter. Tables 2.3 and 4.3 and 4 are in large part taken from tables previously
Geoforum, 1990
The accelerated rate of global forest depletion poses a series of complex problems for developmen... more The accelerated rate of global forest depletion poses a series of complex problems for development planners and resource managers in many developing nations. Among the issues being confronted are the need for foresters to gain new skills in managing human resources, design forest use systems which are both productive and sustainable, and to insure that the benefits of these systems are disrtibuted more equitably. In the last quarter of a century reserved forest lands in Thailand have been seriously degraded through deforestation, overcutting, and the illegal encroachment of poor and landless farmers. To counter these forces the government proposed two new forest management programs in 1975 which would grant certificates of use or limited land use rights to some degraded forest land in areas of national reserved forest. This paper examines the use of this policy in the Forest Village and National Forest Land Allotment Projects in northeast Thailand. Since their implementation in the Dong Mun National Reserved Forest 8 years ago, these projects have been plagued with conflicts over de jure and de facto land rights, public misperceptions about the government's grant of amnesty to illegal forest residents, problems controlling immigration, and the small 2.4 ha land allotments given to project participants. These conditions have produced unequal access to and distribution of land, allotment of land poorly suited for agriculture, the destruction of reforestation plots, continued degradation of reserved forest, and a pronounced pattern of social and economic inequality within and between the villages participating in both projects. We argue that these problems are fundamentally caused by government failures to correctly assess population pressures on land in the northeast and to modify program design to better fit community needs, capabilities, and insure equitability in the distribution of benefits introduction The need for improved forest resource management has become a key concern among planners and resource managers in many developing nations. The importance of this issue is nowhere more apparent than in the rate at which forests in the developing world are being degraded. Recent estimates place the level of global forest degradation at 11 million ha
Community Development Journal, 1995
Community Development Journal, 1987