Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Variation in life-cycle between three rare and endangered floodplain violets in two regions: implications for population viability and conservation
Justus-Liebig-University Giessen, Germany.ORCID-id: 0000-0002-6953-3855
Czech republic.
2009 (engelsk)Inngår i: Biologia (Bratislava), ISSN 0006-3088, E-ISSN 1336-9563, Vol. 64, nr 1, s. 69-80Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We studied the demography of Viola elatior, V. pumila, and V. stagnina, three rare and endangered Central European floodplain species, to (i) analyse variation in life-cycles among congeners and between regions (Dyje-Morava floodplains, Czech Republic; Upper Rhine, Germany), (ii) to define sensitive stages in the life-cycles, and (iii) to identify possible threats for population viability and species conservation. Matrix models were based on the fate of marked individuals from a total of 27 populations over two years. We analysed population growth rate (lambda), stage distribution, net reproductive rate (R (0)), generation time, age at first reproduction, and elasticity and calculated a life table response experiment (LTRE). Most populations were declining and lambda did not differ between species or regions during the observed interval. Despite higher probabilities for survival and flowering in the Dyje populations, R (0) was higher in the Rhine populations. Also other demographic traits showed consistent differences between regions and/or species. Complex life-cycles and large variation in lambda precluded unequivocal identification of sensitive stages or vital rates for conservation. Variation between regions may be a consequence of differences in habitat quality. Our results suggest that deterministic processes such as reduced management, succession, habitat destruction, and lack of disturbance through reduced or eliminated flooding present the strongest threat for the viability and persistence of populations of the three floodplain violets as compared with stochastic processes. However, the persistent seed bank of the species may buffer populations against environmental variation and represents a reservoir for recovery after resumption of suitable land-use management.

sted, utgiver, år, opplag, sider
2009. Vol. 64, nr 1, s. 69-80
Emneord [en]
Viola elatior, Viola pumila, Viola stagninaI, conservation, demography, life table response experiment (LTRE), matrix models
HSV kategori
Forskningsprogram
Biologi
Identifikatorer
URN: urn:nbn:se:kau:diva-37734DOI: 10.2478/s11756-009-0002-1ISI: 000262965900009OAI: oai:DiVA.org:kau-37734DiVA, id: diva2:857176
Tilgjengelig fra: 2015-09-28 Laget: 2015-08-24 Sist oppdatert: 2019-07-11bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst

Personposter BETA

Eckstein, Rolf Lutz

Søk i DiVA

Av forfatter/redaktør
Eckstein, Rolf Lutz
I samme tidsskrift
Biologia (Bratislava)

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 131 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf