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dc.contributor.author
Frey, David
dc.contributor.author
Reisch, Christoph
dc.contributor.author
Narduzzi-Wicht, Barbara
dc.contributor.author
Baur, Eva-Maria
dc.contributor.author
Cornejo, Carolina
dc.contributor.author
Alessi, Massimo
dc.contributor.author
Schoenenberger, Nicola
dc.date.accessioned
2021-10-21T06:43:33Z
dc.date.available
2017-12-05T05:43:26Z
dc.date.available
2017-12-11T13:27:40Z
dc.date.available
2021-10-21T06:43:33Z
dc.date.issued
2017-11
dc.identifier.issn
0024-4074
dc.identifier.issn
1095-8339
dc.identifier.other
10.1093/botlinnean/box061
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/217092
dc.identifier.doi
10.3929/ethz-b-000217092
dc.description.abstract
Freshwater aquatic plants have increased extinction risks due to strong human pressure and the patchy nature of their habitats. However, their unclear population structure frequently hinders conservation planning. To investigate population subdivision and risks to long-term survival of such species, we combined genetic, morphometric and biogeographical approaches to the example of the endangered water chestnut Trapa natans (Lythraceae) from the southern Alpine lake area (Insubria). Amplified fragment length polymorphism (AFLP) of seven extant local stands revealed similar and intermediate levels of genetic diversity, of which c. 97% was partitioned within lakes. Thus, no signs of strong genetic drift and associated loss of genetic diversity were found, despite a reduction of c. 52% of local populations since the early 19th century. Nuclear ribosomal sequences (ITS1–5.8S rRNA–ITS2) combined with a morphometric study of nuts (based on fresh and historical museum material) revealed the presence of two genetically and morphologically slightly distinct lineages, one of which went extinct during the 20th century after a prolonged period of hyper-eutrophication. Taken together, our results indicate the current presence of one large Insubric Trapa population. To prevent genetic risks to survival associated with small population size and increasing fragmentation due to past extinctions, freshwater managers should preserve the large census sizes still present in many Insubric lakes and reduce eutrophication.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Oxford University Press
en_US
dc.rights.uri
http://rightsstatements.org/page/InC-NC/1.0/
dc.subject
AFLP
en_US
dc.subject
conservation
en_US
dc.subject
Genetic structure
en_US
dc.subject
Insubric region
en_US
dc.subject
Internal transcribed spacer
en_US
dc.subject
multivariate morphometrics
en_US
dc.subject
phylogeny
en_US
dc.subject
Trapa muzzanensis
en_US
dc.subject
Trapa verbanensis
en_US
dc.title
Historical museum specimens reveal the loss of genetic and morphological diversity due to local extinctions in the endangered water chestnut Trapa natans L. (Lythraceae) from the southern Alpine lake area
en_US
dc.type
Journal Article
dc.rights.license
In Copyright - Non-Commercial Use Permitted
dc.date.published
2017-10-31
ethz.journal.title
Botanical Journal of the Linnean Society
ethz.journal.volume
185
en_US
ethz.journal.issue
3
en_US
ethz.journal.abbreviated
Bot. J. Linn. Soc.
ethz.pages.start
343
en_US
ethz.pages.end
358
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.notes
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Oxford
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-12-05T05:43:31Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-12-11T13:27:41Z
ethz.rosetta.lastUpdated
2024-02-02T15:09:44Z
ethz.rosetta.versionExported
true
ethz.COinS
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