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Warming Seas in the Coral Triangle: Coral Reef Vulnerability and Management Implications

Bruno, John F.

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Casey, Kenneth S.

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McLeod, Elizabeth

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Menviel, Laurie

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Moffitt, Russell

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Palmer, Michael J.

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Salm, Rodney

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Selig, Elizabeth R.

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Timmermann, Axel

2010
The highest diversity coral reefs in the world, located in the Coral Triangle, are threatened by a variety of local stresses including pollution, overfishing, and destructive fishing in addition to climate change impacts, such as increasing sea surface temperatures (SSTs), and ocean acidification. As climate change impacts increase, coral reef vulnerability at the ecoregional scale will have an increasingly important influence on conservation management decisions. This project provides the first detailed assessment of past and future climatic stress, thermal variability, and anthropogenic impacts in the Coral Triangle at the ecoregional level, thus incorporating both local (eg. pollution, development, and overfishing) and global threats (increasing SSTs). The development of marine protected area (MPA) networks across the Coral Triangle is critical for the region to address these threats. Specific management recommendations are defined for MPA networks based on the levels of vulnerability to the therma stress may be priorities for establishment of MPA networks, wheras high vulnerability regions may require selection and design principles aimed at building resilience to climate change. The identification of climate and other human threats to coral reef systems and ecoregions can help conservation practitioners prioritize management responses to address these threats and identify gaps in MPA networks or other management mechanisms (eg. integrated coastal management).
Adaptation of Human Coping Strategies in a Small Island Society in the SW Pacific - 50 Years of Change in the Coupled Human-Environment System on Bellona, Solomon Islands

Birch-Thomsen, Torben

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Christiansen, Sofus

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Fog, Bjarne

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Mertz, Ole

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Reenberg, Anette

2008
Coupled human-environmental timelines are used to explore the temporal coevolution of driving forces and adaptive strategies from the 1960s to 2006 on Bellona in the SW Pacific. Climatic events and agro-environmental conditions are assessed in conjunction with issues such as population dynamics, agricultural strategies, non-agricultural activities, transport and infrastructure, migration, education, political conditions, etc. Satellite imagery and aerial photos reveal relative stability in agricultural land use intensity despite an increase in de facto population (51% from 1966-2006). Results of questionnaire survey of 48 households show that the utilization of natural resources (notably shifting cultivation and fisheries) remains wide-spread, although it is increasingly supplemented by other income generating activities (eg. shopkeeping, private business, government employment). Group interviews are used to discuss ways in which the local communities' adaptive resource management strategies have been employed in the face of climatic and socioeconomic events and changes in the recent past. Fifty years' development is described as a combination of continuity and change. Resource management practices are only marginally impacted by different stress factors, but the importance of agriculture has been decreasing in relative terms. Culturally determined bonds have become a main 'mechanism' to cope with environmental or socioeconomic stress and the Bellonese have become less vulnerable to external shocks.