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Pollinator rarity limits reintroduction sites in an endangered sexually deceptive orchid (Caladenia hastata): implications for plants with specialized pollination systems

Reiter, Noushka; Vlcek, Kate; O'Brien, Nicholas; Gibson, Maria; Pitts, David; Brown, Graham R.; Bower, Colin C.; Phillips, Ryan

Description

Establishment of reintroduction sites and supplementation of small populations is critical to the recovery of many threatened plant species. For plants with specialized pollination strategies, understanding the spatial distribution of pollinators is essential for successful reintroductions. For the critically endangered Caladenia hastata (Orchidaceae), we aimed to identify the pollinator and mechanism of pollination, test for the presence of the pollinator within potential reintroduction sites...[Show more]

dc.contributor.authorReiter, Noushka
dc.contributor.authorVlcek, Kate
dc.contributor.authorO'Brien, Nicholas
dc.contributor.authorGibson, Maria
dc.contributor.authorPitts, David
dc.contributor.authorBrown, Graham R.
dc.contributor.authorBower, Colin C.
dc.contributor.authorPhillips, Ryan
dc.date.accessioned2021-04-14T23:37:14Z
dc.date.available2021-04-14T23:37:14Z
dc.identifier.issn0024-4074
dc.identifier.urihttp://hdl.handle.net/1885/229886
dc.description.abstractEstablishment of reintroduction sites and supplementation of small populations is critical to the recovery of many threatened plant species. For plants with specialized pollination strategies, understanding the spatial distribution of pollinators is essential for successful reintroductions. For the critically endangered Caladenia hastata (Orchidaceae), we aimed to identify the pollinator and mechanism of pollination, test for the presence of the pollinator within potential reintroduction sites and determine reintroduction sites based on pollinator presence and vegetation composition. Baiting trials at existing populations confirmed pollination by sexual deception of the thynnine wasp Lestricothynnus hastata. Surveys of 233 sites showed the pollinator to be extremely scarce in the range of potential reintroduction sites and no longer present at two of the four extant populations of C. hastata. The pollinator was present at five of the 233 sites of which only two sites had similar vegetation structure and composition to extant populations of C. hastata containing the pollinator. Caladenia hastata was reintroduced to two of these sites, with natural pollination and seed set subsequently confirmed. Restricted pollinator distribution in the former range of C. hastata is the key factor limiting reintroduction of this species. We have shown that an essential first step prior to reintroduction for plants with specialized pollination systems is to understand the presence and distribution of the pollinator.
dc.description.sponsorshipRDP was supported by an Australian Research Council Discovery Early Career Research Award Fellowship (DE150101720).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherBlackwell Publishing Ltd
dc.rights© 2017 The Linnean Society of London
dc.sourceBotanical Journal of the Linnean Society
dc.subjectconservation
dc.subjectOrchidaceae
dc.subjectpollination
dc.subjectsexual deception
dc.subjectthynnine wasp
dc.titlePollinator rarity limits reintroduction sites in an endangered sexually deceptive orchid (Caladenia hastata): implications for plants with specialized pollination systems
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume184
dcterms.dateAccepted2017-03-15
dc.date.issued2017-05-04
local.identifier.absfor060208 - Terrestrial Ecology
local.identifier.ariespublicationu9511635xPUB1640
local.publisher.urlhttps://academic.oup.com/
local.type.statusPublished Version
local.contributor.affiliationReiter, Noushka, College of Science, ANU
local.contributor.affiliationVlcek, Kate, Unknown
local.contributor.affiliationO'Brien, Nicholas, Deakin University
local.contributor.affiliationGibson, Maria, Deakin University
local.contributor.affiliationPitts, David, Department of Sustainability and Environment
local.contributor.affiliationBrown, Graham R., Charles Darwin University
local.contributor.affiliationBower, Colin C., Unknown
local.contributor.affiliationPhillips, Ryan, College of Science, ANU
local.description.embargo2099-12-31
dc.relationhttp://purl.org/au-research/grants/arc/DE150101720
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage122
local.bibliographicCitation.lastpage136
local.identifier.doi10.1093/botlinnean/box017
local.identifier.absseo960806 - Forest and Woodlands Flora, Fauna and Biodiversity
dc.date.updated2020-11-23T10:57:29Z
local.identifier.scopusID2-s2.0-85037639542
local.identifier.thomsonID000400595500009
CollectionsANU Research Publications

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