La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Common Tern Sterna hirundo breeding population: Development and nature conservation management results at the Ormoz wastewater basins between 1992 and 2002 (NE Slovenia)
Auteurs :	Damijan Denac, Auteur
Type de document :	Article
Dans :	Acrocephalus (23(115) 2002)
Article en page(s) :	163-168
Résumé :	A colony of Common Terns Sterna hirundo and Black-headed Gulls Larus ridibundus formed in 1981 in the wastewater basins of the sugar factory in Ormoz. From than on, the colony has been monitored regularly by direct counting. The site was flooded in 1994 and, in 1995 and 1996, Common Terns and Black-headed Gulls did not breed. In 1997, the first artificial breeding raft (surface area 12.5 m(2)) was Placed, followed in 1998 and 2001 by additional rafts (14 m(2) and 96 m(2), respectively). All rafts were placed with the intention of preserving the Common Tern, since this species is highly endangered in Slovenia. As a result, the biggest mixed Common Tern and Black-headed Gull colony in Slovenia has been established on the artificial breeding rafts. In 2002,

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