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dc.contributor.authorKopf, RK
dc.contributor.authorHumphries, P
dc.contributor.authorBond, NR
dc.contributor.authorSims, NC
dc.contributor.authorWatts, RJ
dc.contributor.authorThompson, RM
dc.contributor.authorHladyz, S
dc.contributor.authorKoehn, JD
dc.contributor.authorKing, AJ
dc.contributor.authorMcCasker, N
dc.contributor.authorMcDonald, S
dc.date.accessioned2019-06-19T13:05:51Z
dc.date.available2019-06-19T13:05:51Z
dc.date.issued2019
dc.identifier.issn0706-652X
dc.identifier.doi10.1139/cjfas-2017-0544
dc.identifier.urihttp://hdl.handle.net/10072/383522
dc.description.abstractThe biomass of organisms of different sizes is increasingly being used to explore macroscale variation in food-web and community structure. Here we examine how invasive species and river flow regulation affect native fish biomass and fish community log 10 biomass – body mass scaling relationships in Australia’s largest river system, the Murray–Darling. The log 10 biomass – body mass scaling exponent (scaling B) of invasive fishes (95% CI: −0.14 to −0.18) was less negative than for native fishes (95% CI: −0.20 to −0.25), meaning that invasive species attained a higher biomass in larger size-classes compared to native species. Flow alteration and invasive common carp (Cyprinus carpio) biomass were correlated with severe reductions in native fish biomass ranging from −47% to −68% (95% CI). Our study provides novel evidence suggesting that invasive and native communities have different biomass – body mass scaling patterns, which likely depend on differences in their trophic ecology and body size distributions. Our results suggest that restoration efforts using environmental flows and common carp control has potential to boost native fish biomass to more than double the current level.
dc.description.peerreviewedYes
dc.relation.ispartofpagefrom109
dc.relation.ispartofpageto122
dc.relation.ispartofissue1
dc.relation.ispartofjournalCanadian Journal of Fisheries and Aquatic Sciences
dc.relation.ispartofvolume76
dc.subject.fieldofresearchEcology
dc.subject.fieldofresearchZoology
dc.subject.fieldofresearchFisheries Sciences
dc.subject.fieldofresearchcode0602
dc.subject.fieldofresearchcode0608
dc.subject.fieldofresearchcode0704
dc.titleMacroecology of fish community biomass – size structure: Effects of invasive species and river regulation
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorBond, Nick R.


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