In this work we analyse the distribution pattern of Audouin’s gull in the Mediterranean basin. This gull is endemic to this area. We reported its movements, along the Mediterranean coasts and its islands. Its presence, however, was only registered along Atlantic coast, and, rarely, in the Middle Europe. Currently, the estimated population is around 19,000 pairs. In Spain is found 76% of the population , whereas, in Italy, the population is the second largest group representing 5% of it. The dynamics of the colonisation of the species is not so simple: there might have been, in previous years, a fragmentation in the primal area followed by diverse and different processes of recolonisation still taking place. The risk of extinction expressed in the years 70'-80' was also connected to the scant knowledge of the species. The invasion and competition by the Yellow-legged Herring gull(Larus cachinnans)seems to be among the various probable causes of most evident risk. The impact that the species currently has on the development of the populations of Yellow-legged Herring gull could be one of the original incidental factors for the fragmentation of the area at the time of the Yellow-legged Herring gull’s colonisation of the Mediterranean

DISTRIBUTION PATTERN OF AUDOUINS GULL (LARUS AUDOUINII, PAYRAUDEAU,1826) IN THE MEDITERRANEAN BASIN.

CALIENDO, MARIA FILOMENA;MILONE, MARIO
2004

Abstract

In this work we analyse the distribution pattern of Audouin’s gull in the Mediterranean basin. This gull is endemic to this area. We reported its movements, along the Mediterranean coasts and its islands. Its presence, however, was only registered along Atlantic coast, and, rarely, in the Middle Europe. Currently, the estimated population is around 19,000 pairs. In Spain is found 76% of the population , whereas, in Italy, the population is the second largest group representing 5% of it. The dynamics of the colonisation of the species is not so simple: there might have been, in previous years, a fragmentation in the primal area followed by diverse and different processes of recolonisation still taking place. The risk of extinction expressed in the years 70'-80' was also connected to the scant knowledge of the species. The invasion and competition by the Yellow-legged Herring gull(Larus cachinnans)seems to be among the various probable causes of most evident risk. The impact that the species currently has on the development of the populations of Yellow-legged Herring gull could be one of the original incidental factors for the fragmentation of the area at the time of the Yellow-legged Herring gull’s colonisation of the Mediterranean
File in questo prodotto:
File Dimensione Formato  
11. milone.pdf

non disponibili

Tipologia: Documento in Post-print
Licenza: Accesso privato/ristretto
Dimensione 232.25 kB
Formato Adobe PDF
232.25 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: http://hdl.handle.net/11588/8655
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact