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Contrasting patterns of residency and space use of coastal sharks within a communal shark nursery

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dc.contributor Ecosci Precinct
dc.contributor Csiro Oceans & Atmosphere
dc.contributor Indian Ocean Marine Res Ctr
dc.contributor Sch Biol Sci
dc.contributor University Of Western Australia
dc.contributor Ctr Marine Futures
dc.contributor Univ Western Australia
dc.contributor Queensland University Of Technology (qut)
dc.contributor Commonwealth Scientific & Industrial Research Organisation (csiro)
dc.contributor Australian Inst Marine Sci
dc.contributor Oceans Inst
dc.contributor Australian Institute Of Marine Science MEEKAN, MARK G. OH, BEVERLY Z. L. THUMS, MICHELE BABCOCK, RUSS C. MEEUWIG, JESSICA J. PILLANS, RICHARD D. SPEED, CONRAD 2017-08-29T03:23:57Z 2017-08-29T03:23:57Z 2019-07-08T02:09:13Z 2017-08-29T03:23:57Z 2017-08-29T03:23:57Z 2019-07-08T02:09:13Z 2017-01-01
dc.identifier.citation Oh BZL, Thums M, Babcock RC, Meeuwig JJ, Pillans RD, Speed C, Meekan MG (2017) Contrasting patterns of residency and space use of coastal sharks within a communal shark nursery. Marine and Freshwater Research 68(8): 1501-1517
dc.identifier.issn 1323-1650
dc.description.abstract The benefits of marine protected areas are difficult to estimate for mobile species, but their effectiveness can be increased if essential habitats, such as nursery areas, are protected. In the present study we examined movements of juvenile blacktip reef (Carcharhinus melanopterus) and sicklefin lemon (Negaprion acutidens) sharks in a coastal nursery in northern Australia. Telemetry-derived data were modelled using Brownian bridges and overlaid with maps of habitats and no-take zones. Juvenile N. acutidens were typically residents (>= 30 days) of the nursery with small areas of core space use (< 1.9 km(2)), whereas juvenile C. melanopterus were non-residents (<30 days) and used larger areas (<5.6 km(2)). Both species exhibited positive selection for sandflats and mangroves, and avoidance of deeper lagoonal and slope habitats. Monthly patterns were examined only for resident N. acutidens, and residency decreased with increasing shark length and varied seasonally for males but not females. Space use showed weak declines with increasing tidal range, and slight increases with mean air pressure, rainfall and shark length. Protecting sandflat and vegetated habitats may increase the efficacy of no-take zones for juvenile N. acutidens, because they exhibit residency and affinity to these features. Conversely, such protection will be of limited benefit for juvenile C. melanopterus, because they exhibit low residency and broader movements.
dc.description.sponsorship Receiver data were sourced as part of the Integrated Marine Observing System (IMOS), supported by the Australian Government through the National Collaborative Research Infrastructure Strategy and the Super Science Initiative. The authors thank the Australian Institute of Marine Science for environmental data and S. Wijeratne (University of Western Australia, UWA) for tidal height predictions. The authors also thank numerous volunteers who supported shark tagging efforts and extend special thanks to Peter Barnes and Frazer McGregor for logistical support. Beverly Z. L. Oh was supported by a UWApostgraduate scholarship and a Holsworth Wildlife Research Endowment grant (RA/1/411/59). Funding for field work was also provided by the Save our Seas Foundation. The authors thank R. Fisher and other group members for their valuable advice on analysis.
dc.language English
dc.subject Great-barrier-reef
dc.subject Blacktip Sharks
dc.subject Carcharhinus-melanopterus
dc.subject Modelling
dc.subject Juvenile Lemon Sharks
dc.subject Habitat Use
dc.subject Fisheries
dc.subject Conservation
dc.subject Protected Areas
dc.subject Sandbar Sharks
dc.subject Limnology
dc.subject Negaprion-brevirostris
dc.subject Marine & Freshwater Biology
dc.subject Marine Protected Areas
dc.subject Movement Patterns
dc.subject States Virgin-islands
dc.subject Oceanography
dc.subject Elasmobranchs
dc.subject Marine
dc.title Contrasting patterns of residency and space use of coastal sharks within a communal shark nursery
dc.type journal article
dc.identifier.doi 10.1071/MF16131
dc.identifier.wos WOS:000406489100010

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