Gulf fisheries supported resilience in the decade following unparalleled oiling

The 2010 Deepwater Horizon (DwH) disaster challenged the integrity of the Gulf of Mexico (GOM) large-marine ecosystem at unprecedented scales, prompting concerns of devastating injury for GOM fisheries in the post-spill decade. Following the catastrophe, projected economic losses for regional commercial, recreational, and mariculture sectors for the decade after oiling were US$3.7-8.7 billion overall, owing to the vulnerability of economically prized, primarily nearshore taxa that support fishing communities. State and federal fisheries data during 2000-2017 indicated that GOM fishery sectors appeared to serve as remarkable anchors of resilience following the largest accidental marine oil spill in human history. Evidence of post-disaster impacts on fisheries economies was negligible. Rather, GOM commercial sales during 2010-2017 were US$0.8-1.5 billion above forecasts derived using pre-spill (2000-2009) trajectories, while pre- and post-spill recreational fishery trends did not differ appreciably. No post-spill shifts in target species or effort distribution across states were apparent to explain these findings. Unraveling the mechanisms for this unforeseen stability represents an important avenue for understanding the vulnerability or resilience of human-natural systems to future disturbances. Following DwH, the causes for fishery responses are likely multifaceted and complex (including exogenous economic forces that typically affect fisheries-dependent data), but appear partially explained by the relative ecological stability of coastal fishery assemblages despite widespread oiling, which has been corroborated by multiple fishery-independent surveys across the northern GOM. Additionally, we hypothesize that damage payments to fishermen led to acquisition or retooling of commercial fisheries infrastructure, and subsequent rises in harvest effort. Combined, these social-ecological dynamics likely aided recovery of stressed coastal GOM communities in the years after DwH, although increased fishing pressure in the post-spill era may have consequences for future GOM ecosystem structure, function, and resilience.

Automated summary

The Deepwater Horizon disaster posed a significant challenge to the Gulf of Mexico fisheries, but remarkably, the fishery sectors showed resilience in the decade following the spill, with commercial sales exceeding pre-spill forecasts. This may be attributed to increased fishing pressure and fishermen acquiring or retooling commercial fisheries infrastructure.