Publications des scientifiques de l'IRD

Fu C. H., Olsen N., Taylor N., Gruss A., Batten S., Liu H. Z., Verley Philippe, Shin Yunne-Jai. (2017). Spatial and temporal dynamics of predator-prey species interactions off western Canada. ICES Journal of Marine Science, 74 (8), p. 2107-2119. ISSN 1054-3139.

Titre du document
Spatial and temporal dynamics of predator-prey species interactions off western Canada
Année de publication
2017
Type de document
Article référencé dans le Web of Science WOS:000412707000006
Auteurs
Fu C. H., Olsen N., Taylor N., Gruss A., Batten S., Liu H. Z., Verley Philippe, Shin Yunne-Jai
Source
ICES Journal of Marine Science, 2017, 74 (8), p. 2107-2119 ISSN 1054-3139
Ecosystem models are valuable tools for informing fisheries management due to their ability to simulate the spatial dynamics of modelled species, their trophic interactions, and their responses to fishing in an ecosystem context. In this study, we developed an OSMOSE (Objectoriented Simulator of Marine Ecosystems Exploitation) model for the Pacific North Coast Integrated Management Area (PNCIMA) ecosystem off western Canada, which simulated the entire life cycle of six key species and for the first time integrated spatial population structure and "background" taxa. Background taxa are of secondary importance for the study at hand but have the potential to be important prey or predators of the key species. The primary aim of the study was to explore how the population dynamics of the key species differed over time and different management areas, with results focusing on Pacific Herring (Clupea pallasii) and Pacific Cod (Gadus macrocephalus) that have been assessed on a single-species basis in the last 5 years. Results found that the population dynamics of a specific species varied in different management areas due to differences in species interactions particularly in the form of predation mortality, which supports the current areaspecific assessment and management framework. The study also indicated that increasing predation mortality may have caused the decline of the Pacific Cod populations. By contrast, increasing starvation mortality was found to be a limiting factor for the Pacific Herring populations. The discoveries from these OSMOSE simulations provide important information for fisheries management within the PNCIMA ecosystem.
Plan de classement
Ecologie, systèmes aquatiques [036] ; Ressources halieutiques [040]
Description Géographique
CANADA
Localisation
Fonds IRD [F B010071243]
Identifiant IRD
fdi:010071243
Contact