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dc.contributor.authorJardine, Timothy D
dc.contributor.authorPusey, Bradley J
dc.contributor.authorHamilton, Stephen K
dc.contributor.authorPettit, Neil E
dc.contributor.authorDavies, Peter M
dc.contributor.authorDouglas, Michael M
dc.contributor.authorSinnamon, Vivian
dc.contributor.authorHalliday, Ian A
dc.contributor.authorBunn, Stuart E
dc.date.accessioned2017-05-03T11:34:27Z
dc.date.available2017-05-03T11:34:27Z
dc.date.issued2012
dc.date.modified2013-06-17T03:58:19Z
dc.identifier.issn0029-8549
dc.identifier.doi10.1007/s00442-011-2148-0
dc.identifier.urihttp://hdl.handle.net/10072/48610
dc.description.abstractHigh levels of hydrological connectivity during seasonal flooding provide significant opportunities for movements of fish between rivers and their floodplains, estuaries and the sea, possibly mediating food web subsidies among habitats. To determine the degree of utilisation of food sources from different habitats in a tropical river with a short floodplain inundation duration (*2 months), stable isotope ratios in fishes and their available food were measured from three habitats (inundated floodplain, dry season freshwater, coastal marine) in the lower reaches of the Mitchell River, Queensland (Australia). Floodplain food sources constituted the majority of the diet of largebodied fishes (barramundi Lates calcarifer, catfish Neoarius graeffei) captured on the floodplain in the wet season and for gonadal tissues of a common herbivorous fish (gizzard shad Nematalosa come), the latter suggesting that critical reproductive phases are fuelled by floodplain production. Floodplain food sources also subsidised barramundi from the recreational fishery in adjacent coastal and estuarine areas, and the broader fish community from a freshwater lagoon. These findings highlight the importance of the floodplain in supporting the production of large fishes in spite of the episodic nature and relatively short duration of inundation compared to large river floodplains of humid tropical regions. They also illustrate the high degree of food web connectivity mediated by mobile fish in this system in the absence of human modification, and point to the potential consequences of water resource development that may reduce or eliminate hydrological connectivity between the river and its floodplain.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent223582 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.publisher.placeGermany
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom829
dc.relation.ispartofpageto838
dc.relation.ispartofjournalOecologia
dc.relation.ispartofvolume168
dc.rights.retentionY
dc.subject.fieldofresearchEcology
dc.subject.fieldofresearchFreshwater ecology
dc.subject.fieldofresearchEvolutionary biology
dc.subject.fieldofresearchZoology
dc.subject.fieldofresearchcode3103
dc.subject.fieldofresearchcode310304
dc.subject.fieldofresearchcode3104
dc.subject.fieldofresearchcode3109
dc.titleFish mediate high food web connectivity in the lower reaches of a tropical floodplain river
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, Griffith School of Environment
gro.rights.copyright© 2012 Springer Berlin / Heidelberg. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. The original publication is available at www.springerlink.com
gro.date.issued2012
gro.hasfulltextFull Text
gro.griffith.authorBunn, Stuart E.


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