Spatial and temporal dynamics of predator-prey species interactions off western Canada

Type Article
Date 2017-09
Language English
Author(s) Fu Caihong1, Olsen Norm1, Taylor NathanORCID1, Gruss Arnaud2, 3, Batten Sonia4, Liu Huizhu5, Verley Philippe6, 7, Shin Yunne-JaiORCID6, 7, 8, 9
Affiliation(s) 1 : Fisheries & Oceans Canada, Pacific Biol Stn, 3190 Hammond Bay Rd, Nanaimo, BC V9T 6N7, Canada.
2 : Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Dept Marine Biol & Ecol, 4600 Rickenbacker Causeway, Miami, FL 33149 USA.
3 : Southeast Fisheries Sci Ctr, Sustainable Fisheries Div, 75 Virginia Beach Dr, Miami, FL 33149 USA.
4 : Sir Alister Hardy Fdn Ocean Sci, 4737 Vista View Cr, Nanaimo, BC V9V 1N8, Canada.
5 : Vancouver Isl Univ, Dept Comp Sci, Nanaimo, BC V9T 5S5, Canada.
6 : Ctr Rech Halieut Mediterraneenne & Trop, IRD, MARBEC, UMR 248,CS 30171, Ave Jean Monnet, F-34203 Sete, France.
7 : Univ Montpellier, Pl Eugene Bataillon,CC093,Batiment 24, F-34095 Montpellier 5, France.
8 : Univ Cape Town, Marine Res MA RE Inst, Private Bag X3, ZA-7701 Rondebosch, South Africa.
9 : Univ Cape Town, Dept Biol Sci, Private Bag X3, ZA-7701 Rondebosch, South Africa.
Source Ices Journal Of Marine Science (1054-3139) (Oxford Univ Press), 2017-09 , Vol. 74 , N. 8 , P. 2107-2119
DOI 10.1093/icesjms/fsx056
WOS© Times Cited 22
Keyword(s) ecosystem modelling, fisheries management, OSMOSE, predation mortality, spatial population structure, species interaction

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.

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Fu Caihong, Olsen Norm, Taylor Nathan, Gruss Arnaud, Batten Sonia, Liu Huizhu, 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), 2107-2119. Publisher's official version : , Open Access version :