Data from: Catastrophic dynamics limit Atlantic cod recovery ...

• Main Authors: Sguotti, Camilla, Otto, Saskia, Frelat, Romain, Langbehn, Tom, Plambech Ryberg, Marie, Lindegren, Martin, Durant, Joel, Stenseth, Nils, Möllmann, Christian
• Format: Dataset
• Language: English
• Published: Dryad 2019
• Subjects: Catastrophe theory; Atlantic cod; population recovery; stochastic cusp modelling; stock collapse; Canada; Thorne; atlantic cod; Gadus morhua; North Atlantic; Northwest Atlantic
• Online Access: https://dx.doi.org/10.5061/dryad.037jr6v; https://datadryad.org/stash/dataset/doi:10.5061/dryad.037jr6v

Collapses and regime changes are pervasive in complex systems (such as marine ecosystems) governed by multiple stressors. The demise of Atlantic cod (Gadus morhua) stocks constitutes a text book example of the consequences of overexploiting marine living resources, yet the drivers of these nearly synchronous collapses are still debated. Moreover, it is still unclear why rebuilding of collapsed fish stocks such as cod is often slow or absent. Here we apply the stochastic cusp model, based on catastrophe theory, and show that collapse and recovery of cod stocks are potentially driven by the specific interaction between exploitation pressure and environmental drivers. Our statistical modelling study demonstrates that for most of the cod stocks ocean warming could induce a non-linear discontinuous relationship between fishing pressure and stock size, which would explain hysteresis in their response to reduced exploitation pressure. Our study suggests further that a continuing increase in ocean temperatures will ... : Data of Atlantic cod stockHere the data of Spawning Stock Biomass (SSB), Fishing Mortality (F) and Sea Surface Temperature (SST) for the 19 cod stocks used in the study can be found. SSB and F derived from stock assessment developed by the institutions across the North Atlantic: International Council for the Exploration of the Sea (ICES), Northwest Atlantic Fisheries Organization (NAFO), Fisheries and Oceans Canada also known as Department of Fisheries and Oceans (DFO), and National Oceanic and Atmospheric Administration (NOAA). The SST were collated from the NOAA Extended Reconstructed Sea Surface Temperature dataset (ERSST, www.ncdc.noaa.gov) version 4. Accessed in July of 2017. If you use these SST data, please cite the original data source: Boyin Huang, Viva F. Banzon, Eric Freeman, Jay Lawrimore, Wei Liu, Thomas C. Peterson, Thomas M. Smith, Peter W. Thorne, Scott D. Woodruff, and Huai-Min Zhang, 2015: Extended Reconstructed Sea Surface Temperature (ERSST), Version 4. Sea Surface Temperature. NOAA ...