The red-listed lichen Seirophora villosa is associated with undisturbed coastal dune systems dominated by Juniperus spp. The clustered distribution of this species suggests that propagative traits may be responsible for its conservation status. We tested whether the local distribution of an S. villosa population under undisturbed conditions is limited by habitat filtering or by low dispersal fitness. Using Strip Adaptive Cluster Sampling, we estimated the size of one of the largest undisturbed Italian populations of S. villosa. We considered the abundance of both mature and juvenile thalli in relation to geographical and environmental spaces. Multiple regression on distance matrices models were in accordance with the hypothesis that S. villosa is occupying only a small portion of its colonizable niche because of a very limited propagation ability. Apart from the co-occurrence of mature thalli, the presence of juvenile thalli was independent of pure spatial and environmental factors

Local dispersal dynamics determine the occupied niche of the red-listed lichen Seirophora villosa (Ach.) Frödén in a Mediterranean Juniperus shrubland

Giordani, Paolo;Mariotti, Mauro Giorgio
2015-01-01

Abstract

The red-listed lichen Seirophora villosa is associated with undisturbed coastal dune systems dominated by Juniperus spp. The clustered distribution of this species suggests that propagative traits may be responsible for its conservation status. We tested whether the local distribution of an S. villosa population under undisturbed conditions is limited by habitat filtering or by low dispersal fitness. Using Strip Adaptive Cluster Sampling, we estimated the size of one of the largest undisturbed Italian populations of S. villosa. We considered the abundance of both mature and juvenile thalli in relation to geographical and environmental spaces. Multiple regression on distance matrices models were in accordance with the hypothesis that S. villosa is occupying only a small portion of its colonizable niche because of a very limited propagation ability. Apart from the co-occurrence of mature thalli, the presence of juvenile thalli was independent of pure spatial and environmental factors
File in questo prodotto:
File Dimensione Formato  
2015_03_S1754504814001081-main.pdf

accesso chiuso

Descrizione: articolo
Tipologia: Documento in versione editoriale
Dimensione 414.09 kB
Formato Adobe PDF
414.09 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/738184
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 10
social impact