Every so often, we run across reports that force us to stop and question our assumptions. Recent papers on global warming and the impact on oceans is a topic we have been monitoring for a couple of years now, with each new paper more depressing than the last.
It is our view that the role of ocean warming on stock health, and by extension, investment risks associated with stock health is either ignored or underestimated in most wild capture fisheries investment models. However, with little information on which to base this assumption, it has been difficult to express this disconnect. Furthermore, most of the impacts are felt at the base of the supply chain – by fishers and fishing firms.
A recent open paper in the journal Nature provides some interesting context. Titled “Coral reef degradation is not correlated with local human population density”, the research appears to “suggests that local factors such as fishing and pollution are having minimal effects or that their impacts are masked by global drivers such as ocean warming” and …. “findings indicate that local management alone cannot restore coral populations or increase the resilience of reefs to large-scale impacts. They also highlight the truly global reach of anthropogenic warming and the immediate need for drastic and sustained cuts in carbon emissions.”
If these findings are true – and we are unsure there is scientific consensus around them – it will have significant implications for wild capture value chains, local populations and for the range of local and community based efforts attempting to address overfishing through local management.
We would welcome comments or thoughts on this paper, which can be accessed at this link.
Bruno, J. F. and Valdivia, A. Coral reef degradation is not correlated with local human population density. Sci. Rep. 6, 29778; doi: 10.1038/srep29778 (2016).