26 research outputs found
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Land-use change is associated with multi-century loss of elephant ecosystems in Asia
Understanding historic patterns of land use and land cover change across large temporal and spatial scales is critical for developing effective biodiversity conservation management and policy. We quantify the extent and fragmentation of suitable habitat across the continental range of Asian elephants (Elephas maximus) based on present-day occurrence data and land-use variables between 850 and 2015 A.D. We found that following centuries of relative stability, over 64% (3.36 million km2) of suitable elephant habitat across Asia was lost since the year 1700, coincident with colonial-era land-use practices in South Asia and subsequent agricultural intensification in Southeast Asia. Average patch size dropped 83% from approximately 99,000-16,000 km2 and the area occupied by the largest patch decreased 83% from ~ 4 million km2 (45% of area) to 54,000 km2 (~ 7.5% of area). Whereas 100% of the area within 100 km of the current elephant range could have been considered suitable habitat in the year 1700, over half was unsuitable by 2015, driving potential conflict with people. These losses reflect long-term decline of non-forested ecosystems, exceeding estimates of deforestation within this century. Societies must consider ecological histories in addition to proximate threats to develop more just and sustainable land-use and conservation strategies
Universal and Local Understanding of Poverty in Peru
The purpose of this survey of the literature on poverty in Peru is to contribute to universal and interdisciplinary understanding, while at the same time giving due weight to discipline-specific contributions. The first three sections review relevant literature on Peru by economists, social anthropologists and sociologists. The strict positivism of much economic literature renders it susceptible to neglect power relations and assume a benign and universal process of modernization. Anthropologists have revealed the importance of local cultural identity, but at the risk of downplaying universal dimensions of well-being. Sociologists struggle to reconcile a universal analysis of class structure with renewed emphasis on individual and collective agency in adversity. The last section puts forward an integrating theoretical framework centred on the concepts of inclusion and exclusion. In contrast to the ‘tragic optimism’ of Sender this theory of social exclusion can best be summed up as ‘constructive pessimism’