Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/193
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dc.contributor.authorKnox, KJen
dc.contributor.authorClarke, PJen
dc.date.accessioned2008-05-06T16:27:00Z
dc.date.issued2005en
dc.identifier.citationFunctional Ecology, 19(4), p. 690-698en
dc.identifier.issn0269-8463en
dc.identifier.urihttps://hdl.handle.net/1959.11/193en
dc.description.abstract1. Propagule (diaspore) predation by crabs has been shown to be a major source of mortality for mangroves. We measured predation by crabs on seeds of nine tropical mangrove species in multifactorial experiments by following the fates of tethered propagules.2. We tested whether planting, intertidal position and canopy gaps influenced predation of propagules and whether the predation of propagules was reduced in the presence of conspecifics. We also tested if predation influenced patterns of propagule establishment.3. Mortality due to predation ranged from 22 to 100%, withAegiceras corniculatum > Avicennia marina > Bruguiera parviflora > Aegialitis annulata > B. exaristata > Ceriops australis > C. decandra = B. gymnorrhiza > Rhizophora stylosa. Initial predator preferencewas correlated with the size of propagules.4. Propagule planting (prone vs. implanted) and canopy type had the largest magnitude of effects across all species for treatment effects. Propagules dispersed in the prone position had more mortality while those dispersed into canopy gaps were generallyless preyed upon. Three species were tested for dominance-predation by regression of stand relative density with final predation by crabs for canopy treatments. No species had significant effects that supported the hypothesis.5. Predation by crabs often changed with intertidal position but showed no consistent pattern among species or gap treatments. Interactions of canopy treatment and tidal position showed that predation by crabs did not have a major influence on the zonationof mangroves in our study sites.6. Analyses of covariance of predation and establishment showed that establishment success is strongly controlled by predation in six of the nine species tested. This suggests that herbivores have a greater impact on recruitment than do microhabitat effects onresources. The combined effects of predator refuge and growth preference enhance recruitment in large canopy gaps. Crab predators appear to maintain the floristic similarity between canopy gaps and surrounding forests in tropical mangrove forests of northern Australia by removing allopatric species from gaps.en
dc.languageenen
dc.publisherBlackwell Publishing Ltden
dc.relation.ispartofFunctional Ecologyen
dc.titleNutrient availability induces contrasting allocation and starch formation in resprouting and obligate seeding shrubsen
dc.typeJournal Articleen
dc.identifier.doi10.1111/j.1365-2435.2005.01006.xen
dc.subject.keywordsPlant Developmental and Reproductive Biologyen
local.contributor.firstnameKJen
local.contributor.firstnamePJen
local.subject.for2008060703 Plant Developmental and Reproductive Biologyen
local.subject.seo770703 Living resources (flora and fauna)en
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailkknox2@une.edu.auen
local.profile.emailpclarke1@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordpes:2161en
local.publisher.placeUnited Kingdomen
local.format.startpage690en
local.format.endpage698en
local.peerreviewedYesen
local.identifier.volume19en
local.identifier.issue4en
local.contributor.lastnameKnoxen
local.contributor.lastnameClarkeen
dc.identifier.staffune-id:kknox2en
dc.identifier.staffune-id:pclarke1en
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:192en
dc.identifier.academiclevelAcademicen
dc.identifier.academiclevelAcademicen
local.title.maintitleNutrient availability induces contrasting allocation and starch formation in resprouting and obligate seeding shrubsen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 64<br />Views: 63<br />Downloads: 0en
local.search.authorKnox, KJen
local.search.authorClarke, PJen
local.uneassociationUnknownen
local.year.published2005en
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