Climate change is expected to dramatically alter the distribution of many marine megafauna, impacting the people and economies that depend upon them. We build on the recent literature by developing a framework to describe the effects these changes will have on marine megafauna. With the goal to assist policymakers and grass roots organizers, we identify three illustrative pathways by which climate change drives these range shifts: (1) effects on habitat and shelter, (2) impacts on reproduction and disease, and (3) changing distribution of sources of food. We examine non-climate factors that may constrain or enable megafauna to adapt, creating winners and losers both for the species and the people dependent upon them. Finally, we comment on what management strategies exist at international and local scales that could help mitigate these impacts of climate change so that we, as a global community, can ensure that marine megafauna and people can best co-exist in a changing world.

<p>Vanuatu's common property natural resources provide essential ecological services for the global community and sustain the livelihoods of 80% of the Vanuatu population. Sustainable management of natural resources is dependent on locally developed systems that govern common property resources. Understanding the drivers of commons management problems from local resource-users' perspectives is essential to know how local governance systems can be supported and strengthened. I explore locally identified drivers of commons management problems using a case study of the Tangoa Island community of South Santo, Vanuatu. Methods include participatory rural appraisal (PRA) techniques and 31 interviews with local people. Literature from Vanuatu as well as 18 interviews with Vanuatu government departments, NGOs, and aid donors informs how relevant the issues identified in the case study are for other communities across Vanuatu. I found that drivers at different contextual scales, from local to global, affect two main elements of a community's cooperative capacity for commons management - social cohesion and governance systems. The issues identified by the Tangoa Island community affect many Vanuatu communities because they are driven by wider processes of social, cultural, economic, and institutional change. Approaches to support and strengthen local social and governance systems can target drivers at multiple contextual scales.</p>

<p>Vanuatu's common property natural resources provide essential ecological services for the global community and sustain the livelihoods of 80% of the Vanuatu population. Sustainable management of natural resources is dependent on locally developed systems that govern common property resources. Understanding the drivers of commons management problems from local resource-users' perspectives is essential to know how local governance systems can be supported and strengthened. I explore locally identified drivers of commons management problems using a case study of the Tangoa Island community of South Santo, Vanuatu. Methods include participatory rural appraisal (PRA) techniques and 31 interviews with local people. Literature from Vanuatu as well as 18 interviews with Vanuatu government departments, NGOs, and aid donors informs how relevant the issues identified in the case study are for other communities across Vanuatu. I found that drivers at different contextual scales, from local to global, affect two main elements of a community's cooperative capacity for commons management - social cohesion and governance systems. The issues identified by the Tangoa Island community affect many Vanuatu communities because they are driven by wider processes of social, cultural, economic, and institutional change. Approaches to support and strengthen local social and governance systems can target drivers at multiple contextual scales.</p>