Data from: Possible adverse impact of contaminants on Atlantic cod population dynamics in coastal ecosystems ...

• Main Authors: Ono, Kotaro, Knutsen, Halvor, Olsen, Esben M, Ruus, Anders, Hjermann, Dag Ø, Stenseth, Nils Chr
• Format: Dataset
• Language: English
• Published: Dryad 2019
• Subjects: Norway; atlantic cod; Gadus morhua
• Online Access: https://dx.doi.org/10.5061/dryad.3r8h547; https://datadryad.org/stash/dataset/doi:10.5061/dryad.3r8h547

While many in-lab ecotoxicological studies have shown the adverse impact of pollutants to the fitness of an individual, direct evidence from the field on the population dynamics of wildlife animals has been lacking. Here, we provide empirical support for a negative effect of pollution on Atlantic cod (Gadus morhua) population dynamics in coastal waters of Norway by combining unique time series of juvenile cod abundance, body size, environmental concentration of toxic contaminants, and a spatially structured population dynamics model. The study shows that mercury concentration might have decreased the reproductive potential of cod in the region despite the general decline in the environmental concentration of mercury, cadmium, and hexachlorobenzene since the implementation of national environmental laws. However, some cod populations appeared to be more resistant to mercury pollution than others and the strength and shape of mercury effect on cod reproductive potential was fjord-specific. Additionally, cod ... : code_dataThe zip file contains all data and R code to reproduce the study ...