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Are cyclones agents for connectivity between reefs?

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dc.contributor Australian Institute Of Marine Science
dc.contributor University Of Western Australia
dc.contributor Univ Western Australia
dc.contributor Commonwealth Scientific & Industrial Research Organisation (csiro)
dc.contributor Csiro Marine Res
dc.contributor Australian Inst Marine Sci
dc.contributor Sch Earth & Environm
dc.contributor Uwa Oceans Inst DONE, TERRY RADFORD, BEN BABCOCK, RUSS VAN NIEL, KIMBERLY 2017-03-21T01:06:48Z 2016-10-25T05:52:57Z 2017-03-21T01:06:48Z 2020-06-30T22:28:46Z 2017-03-21T01:06:48Z 2016-10-25T05:52:57Z 2017-03-21T01:06:48Z 2020-06-30T22:28:46Z 2014-07-01
dc.identifier.citation Radford B, Babcock R, Van Niel K, Done T (2014) Are cyclones agents for connectivity between reefs? Journal of Biogeography 41(7): 1367-1378 en_US
dc.identifier.issn 0305-0270
dc.description.abstract Aim Our aim was to determine whether cyclone-modified currents and winds can enhance coral larval transport between geographically separate reefs and whether connectivity could occur within the competency period of coral larvae. Location The North West Shelf of Australia. Methods Larval connectivity was modelled between inshore and mid-shelf reef zones in two years (1996 and 2001) when cyclones occurred around the time of coral spawning. This was contrasted with 2002, when cyclones were absent during the spawning. The effects of current and wind patterns on the dispersal of buoyant coral eggs was simulated using GCOM3D, a three dimensional hydrodynamic current model, and OILMAP, a surface wind stress model. Results Modelling showed that larvae could disperse across the North West shelf and well beyond the parent reefs when influenced by cyclone-modified wind and current patterns. The dispersal of larvae to reefs separated by 100km is likely to be frequent, to involve a substantial proportion of the larval population (between 63% and 86%), and to occur within 6days (the competency period of the larvae). Simulating larval behaviour by including a buoyant phase in the larval model, where larvae are subject to surface winds, reduces connection time between reef areas by 11% to 29%. Main conclusions Cyclones have the potential to increase the distance larvae travel and can act to rapidly connect widely separated inshore and mid-shelf reefs within the competency period of coral larvae. The buoyant phase of the coral larvae, where larvae are subject to propulsion by surface winds and subsurface currents, may enhance rapid connectivity. Our results show that periodic and extreme climatic conditions could significantly impact connectivity. In combination with larval behaviour they have important implications for connectivity time between inshore and mid-shelf reefs.
dc.description.sponsorship We would like thank Libby Howitt of Apache Energy Limited for advice and access to the resources, software and data required for modelling. This project was funded as part of the Co-operative Research Centre, Reef Research Centre Reef Futures Project (task D2.1.1S).
dc.language English
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.relation.ispartof Null
dc.subject Great-barrier-reef
dc.subject Range Shift
dc.subject Ecology
dc.subject Shelf
dc.subject Larvae
dc.subject Physical Geography
dc.subject Connectivity
dc.subject Diversity
dc.subject Coral Reef
dc.subject Australia
dc.subject Environmental Sciences & Ecology
dc.subject Patterns
dc.subject Settlement
dc.subject Climate Change
dc.subject Assemblages
dc.subject Supply-side Ecology
dc.subject Population Connectivity
dc.subject Biodiversity
dc.subject Dispersal
dc.subject Scleractinian Corals
dc.subject Geography, Physical
dc.subject Cyclone
dc.subject Competence
dc.subject Larval Dispersal
dc.title Are cyclones agents for connectivity between reefs?
dc.type journal article en_US
dc.identifier.doi 10.1111/jbi.12295
dc.identifier.wos WOS:000337615500012

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