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Ecological bridges and barriers in pelagic ecosystems

Citation

Briscoe, DK and Hobday, AJ and Carlisle, A and Scales, K and Eveson, JP and Arrizabalaga, H and Druon, JN and Fromentin, JM, Ecological bridges and barriers in pelagic ecosystems, Deep-Sea Research Part II, 140 pp. 182-192. ISSN 0967-0645 (2016) [Refereed Article]

Copyright Statement

2016 Elsevier Ltd. All rights reserved.

DOI: doi:10.1016/j.dsr2.2016.11.004

Abstract

Many highly mobile species are known to use persistent pathways or corridors to move between habitat patches in which conditions are favorable for particular activities, such as breeding or foraging. In the marine realm, environmental variability can lead to the development of temporary periods of anomalous oceanographic conditions that can connect individuals to areas of habitat outside a population's usual range, or alternatively, restrict individuals from areas usually within their range, thus acting as . ecological bridges or . ecological barriers. These temporary features can result in novel or irregular trophic interactions and changes in population spatial dynamics, and, therefore, may have significant implications for management of marine ecosystems. Here, we provide evidence of ecological bridges and barriers in different ocean regions, drawing upon five case studies in which particular oceanographic conditions have facilitated or restricted the movements of individuals from highly migratory species. We discuss the potential population-level significance of ecological bridges and barriers, with respect to the life history characteristics of different species, and inter- and intra-population variability in habitat use. Finally, we summarize the persistence of bridge dynamics with time, our ability to monitor bridges and barriers in a changing climate, and implications for forecasting future climate-mediated ecosystem change.

Item Details

Item Type:Refereed Article
Keywords:species distribution, migration corridors, population connectivity, oceanographic features, tuna, billfish, marine mammal, Brazilian episode
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Biological Sciences
Author:Hobday, AJ (Dr Alistair Hobday)
ID Code:118804
Year Published:2016
Web of Science® Times Cited:1
Deposited By:Centre for Ecology and Biodiversity
Deposited On:2017-07-20
Last Modified:2017-10-05
Downloads:0

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