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Abstract

Cephalopods, especially squids, arebelieved to have a structuring role in marine ecosystemsas a link between different trophic levels,primarily due to their voracious prey consumptionand high production rate. Cephalopod ecology, however,is still poorly understood as observational studiesoften give highly uncertain and variable results due tothe peculiarities of cephalopod behaviour and biology,and their responsiveness to external drivers. Thisreview evaluates our representation of cephalopods inecosystem models and the insights given by thesemodels on the role of cephalopods in our oceans. Weexamined ecosystem models from 13 regions toanalyse the representation of cephalopods and comparedtheir results to local trophic studies. Our analysisindicated that most ecosystem models inadequatelyinclude cephalopods in terms of model structure andparametrization; although some models still have the capacity to draw valuable conclusions regarding theimpact and role of cephalopods within the system.Oceanic squid species have a major role linkingtrophic levels and food webs from different habitats.The importance of neritic species varies locally, butgenerally cephalopods have a substantial impact viatheir consumer role. To better understand the ecologicalrole of cephalopods, improved representation ofthese species in ecosystem models is a criticalrequirement and could be achieved relatively easilyto more accurately articulate the mechanisms regulatingthe ecological role of cephalopods.

Item Type:	Article
Authors/Creators:	de La Chesnais, T and Fulton, EA and Tracey, SR and Pecl, GT
Keywords:	cephalopods, ecosystem models, ecological roles, key species
Journal or Publication Title:	Reviews in Fish Biology and Fisheries
Publisher:	Kluwer Academic Publ
ISSN:	0960-3166
DOI / ID Number:	https://doi.org/10.1007/s11160-019-09554-2
Copyright Information:	Copyright 2019 Springer Nature Switzerland AG
Related URLs:	Google Scholar: Tracey, SR UTAS Profile: Tracey, SR Google Scholar: Pecl, GT UTAS Profile: Pecl, GT
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