Données synchorologiques sur la végétation littorale européenne

Géhu, Jean Marie; Franck, Julien

doi:10.1007/978-94-009-5508-0_8

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…As a consequence, 37% of the European littoral plants are endangered (van der Maarel & van der Maarel‐Versluys, 1996). Many of the costal endemics are specialists of sand dunes (vanden Berghen, 1964; Bakker, 1976; Géhu & Franck, 1985), a habitat that is particularly threatened by destruction due to urbanization and erosion (e.g. Géhu, 1989; Heslenfeld, Jungerius & Klijn, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…The species inhabits the longest continuous sand dune in Europe, which is only interrupted by a few towns and villages (Favennec, 1998). On the dune, it occurs in zones with moderate erosion (semi‐fixed dune), where it experiences only low levels of interspecific competition and where it can form high‐density stands of thousands of individuals together with other endemic plant species (Géhu & Franck, 1985; Favennec, 2002a; Forey et al ., 2008).…”

Section: Introductionmentioning

confidence: 99%

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High genetic and morphological diversity despite range contraction in the diploid Hieracium eriophorum (Asteraceae) endemic to the coastal sand dunes of south-west France

Frey

Haag

Kozlowski

et al. 2012

Botanical Journal of the Linnean Society

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Endemic plants inhabiting coastal sand dunes show augmented extinction risks due to the dynamic nature of dunes and strong human pressure on coastal areas. To investigate the survival strategies and threats to long-term survival of such species, we combined genetic, morphological and biogeographical approaches, using the example of Hieracium eriophorum (Asteraceae) and its putative cryptic sister species H. prostratum, which are endemic to the longest coastal sand dune in Europe. An analysis of amplified fragment length polymorphism revealed high within-population genetic variability, and slight isolation by distance was the only indication of genetic population structure. Thus, no signs of genetic threats to survival were found. Furthermore, genetic and morphometric data provided no evidence for the existence of two species. Therefore, we propose to synonymize H. prostratum with H. eriophorum and provide a nomenclatural overview with typification. Finally, an analysis of historical distribution records showed that, during the last 100 years, the species was lost from its range margins, where its habitat became fragmented. Taken together, our results suggest that one successful survival strategy of narrow endemics may be the achievement of large local population sizes on a small geographical scale, thus avoiding the genetic problems inherent to small and fragmented populations. Dune management policies should thus take care that the current tendencies to allow more erosion will not result in too severe fragmentation of the remaining continuous stretches of dune habitat.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High genetic and morphological diversity despite range contraction in the diploid Hieracium eriophorum (Asteraceae) endemic to the coastal sand dunes of south-west France

Frey

Haag

Kozlowski

et al. 2012

Botanical Journal of the Linnean Society

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“…La végétation et l'environnement des dunes littorales méditerranéennes ont fait l'objet d'études fondatrices (par exemple, Géhu & Franck, 1985 ;. Plus récemment, des travaux ont porté sur la cartographie des dunes et leur vulnérabilité face à la menace anthropique en Italie (Acosta et al, 2000(Acosta et al, , 2003(Acosta et al, , 2004(Acosta et al, , 2005Carboni et al, 2009 ;Malavasi et al, 2013), en Turquie (Çakan et al, 2011) et en Espagne (Liu et al, 2012).…”

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La végétation dunaire du littoral de Jijel (Algérie) : proposition d’une nouvelle Zone Importante pour les Plantes

Khennouf¹,

Chefrour²,

Corcket³

et al. 2018

revec

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Les dunes littorales de Jijel se situent entre deux Zones Importantes pour les Plantes (ZIP ) et enclavent un site Ramsar. Cet écosystème fragile et très convoité par le public héberge des groupements caractéristiques et des plantes de grande valeur patrimoniale. Trois sites ont été sélectionnés pour l’étude de la végétation selon la méthode du relevé phytosociologique. L’analyse floristique a permis de dresser une liste de 235 espèces végétales et de décrire les groupements végétaux présents sur les dunes. L’analyse biogéographique permet d’évaluer à 68,3 % l’originalité méditerranéenne de la flore, et à seulement 2,5 % l’endémisme. Les dunes de Jijel présentent une grande richesse floristique et abritent plusieurs espèces répondant aux critères de classification de ZIP. Certaines plantes sont inédites pour la région de Jijel, et plusieurs autres nécessitent une révision de leur distribution et leur abondance.

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“…One of the first systematic studies of the eastern part of the Aegean was published by Davis et al (1985). Over the second half of the last century there have been many phytosociological studies on the Aegean islands, especially on the large island of Crete (Rechinger and Rechinger-Moser (1951), Zohary and Orshan (1965), Horvat et al (1974), Gradstein and Smittenberg (1977), Quézel (1980, 1989), Hager (1985), Géhu et al (1987), Tsiourlis et al (1998a), Zaffran (1990), Turland et al (1993), Mayer (1994, Jahn and Schönfelder (1995), Bergmeier (2002), and Jahn (2005)). However, phytogeographers working in the eastern Mediterranean region have had difficulties in establishing a phytosociological interpretation of these formations.…”

Section: Introductionmentioning

confidence: 99%

Taxonomy and ecology of phryganic communities with <i>Sarcopoterium spinosum</i> (L.) Spach of the Aegean (Greece)

Tsiourlis¹,

Konstantinidis²,

Xofis³

2007

Israel Journal of Plant Sciences

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Phrygana (dwarf-shrub formations similar to batha) are the most common natural vegetation type in the Aegean region. Prickly burnet Sarcopoterium spinosum (L.) Spach is the characteristic species and also the dominant one of many phrygana and batha over the Eastern Mediterranean region. This paper contributes to a phytosociological systematic approach in the study of the Aegean phryganic plant communities with S.

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Données synchorologiques sur la végétation littorale européenne

Cited by 6 publications

References 3 publications

High genetic and morphological diversity despite range contraction in the diploid Hieracium eriophorum (Asteraceae) endemic to the coastal sand dunes of south-west France

High genetic and morphological diversity despite range contraction in the diploid Hieracium eriophorum (Asteraceae) endemic to the coastal sand dunes of south-west France

La végétation dunaire du littoral de Jijel (Algérie) : proposition d’une nouvelle Zone Importante pour les Plantes

Taxonomy and ecology of phryganic communities with <i>Sarcopoterium spinosum</i> (L.) Spach of the Aegean (Greece)

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