Connectivity, habitat heterogeneity, and population persistence in Ranunculus nodiflorus, an endangered species in France

Florence Noël 1 Emmanuelle Porcher 1 Jacques Moret 2 Nathalie Machon 1
1 CESCO - Centre d'Ecologie et des Sciences de la COnservation
2 CBNBP - Conservatoire Botanique National du Bassin Parisien
Abstract : • Here, we explore the role of habitat spatial structure in the maintenance of metapopulations of Ranunculus nodiflorus. This rare species grows in puddles that can be connected occasionally by flooded corridors. • We monitored five locations in the Fontainebleau forest, France, since 2002 and recorded the presence of corridors among puddles and evaluated their impact on puddle demography and plant fitness. • We showed that connections increased population size, by increasing both the number of puddles occupied by the species and the density of individuals within puddles, but seemed to have no direct influence on plant fitness. We found no evidence of a large persistent soil seed bank. • Natural corridors are likely to decrease the extinction probability of the populations , most probably by allowing recolonization of empty puddles after extinctions. Therefore, the preservation of corridors appears crucial for the conservation of R. nodiflorus in its natural habitat.
Keywords : conservation corridors metapopulation migration pattern Ranunculus nodiflorus reproductive success
Document type :
Journal articles
Complete list of metadatas

Cited literature [1 references]  Display  Hide  Download
https://hal-mnhn.archives-ouvertes.fr/mnhn-02265422
Contributor : Emmanuelle Porcher <>
Submitted on : Friday, August 9, 2019 - 4:05:30 PM
Last modification on : Monday, September 23, 2019 - 3:20:06 PM

File

Noel&al2005.pdf
Files produced by the author(s)

Identifiers

Collections

MNHN | CESCO | SORBONNE-UNIVERSITE | SU-SCIENCES | CBNBP

Citation

Florence Noël, Emmanuelle Porcher, Jacques Moret, Nathalie Machon. Connectivity, habitat heterogeneity, and population persistence in Ranunculus nodiflorus, an endangered species in France. New Phytologist, Wiley, 2006, 169 (1), pp.71-84. ⟨10.1111/j.1469-8137.2005.01572.x⟩. ⟨mnhn-02265422⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

4

Files downloads

8

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD