Shift in recreational fishing catches as a function of an extreme cold event

• Published in: Ecosphere (Washington, D.C) Vol. 7; no. 6
• Main Authors: Santos, R. O., Rehage, J. S., Boucek, R., Osborne, J.
• Format: Journal Article
• Language: English
• Published: Washington John Wiley & Sons, Inc 01-06-2016; Wiley
• Subjects: Climate change; Climate effects; Cold; cold spell; Commercial fishing; community composition; Ecosystem dynamics; Ecosystem services; Ecosystems; Environmental changes; extreme climatic event; Extreme cold; Fish; Fish populations; Fisheries; fishery resilience; Fishing; Marine ecosystems; Marine fish; National parks; Recreation; recreational fisheries; Special Feature: Extreme Cold Spells; Sport fishing; Sustainability; South Florida; Everglades; Florida; United States > US
• ISSN: 2150-8925; 2150-8925
• DOI: 10.1002/ecs2.1335

Abstract
There is an increasing recognition that the influence of extreme climate events (
ECE
) can be more significant in structuring ecosystem dynamics than the gradual effects of climate change. Still, our understanding of the effects of climate extremes on ecosystem services such as marine fisheries lags behind those of effects of gradual change. The significance of
ECE
s depends on the severity of the disturbance event and the resilience of a fish community. South Florida experienced an extreme cold spell in 2010 that provided the opportunity to study recreational fisheries resilience to
ECE
s. Our main goal was to examine how recreational fishing catch structures responded to the cold spell, and illustrate any spatial‐specific recovery trajectory dynamics after extreme ecological responses. To address this, we implemented multivariate and nonlinear statistics on fishing guide reports for 20 recreational species. A significant shift in the catch structure occurred after the event, suggesting a high sensitivity of fish populations and fisheries in the region to
ECE
s. All fishing regions considered were affected, but the trajectory of the response and recovery varied across study areas. While some fish species experienced an expected decline (due to mortality), other species manifested an increase in catch. Of the main seven species considered in nonlinear models, three experienced a decline (bonefish, snook, goliath grouper), two experienced an increase (red drum, gray snapper), and the two had various weak trends (tarpon, spotted seatrout). Three years after the event, the catch structure has not returned to the original state, indicating a possible state shift, whose stability needs to be determined in future tracking of affected populations. Future work should also address the extent to which harvest may interfere with resilience to
ECE
s. Our work highlights the need to account for rare environmental forcing induced by
ECE
s to ensure the ecological and economical sustainability of key services such as recreational fisheries.