La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Population and reproductive trends of Nene Branta sandvicensis in Hawaii Volcanoes National Park, 1989-1999
Auteurs :	E. H. Rave, Auteur ; A. Cooper, Auteur ; D. Hu, Auteur ; R. Swift, Auteur ; K. Misajon, Auteur
Type de document :	Article
Dans :	Wildfowl (55 2005)
Article en page(s) :	7-16
Langues:	Anglais
Résumé :	The Hawaiian Goose or Nene Branta sandvicensis is an endangered species endemic to Hawaii. Hawaii Volcanoes National Park contains about 41% of Nene on the island of Hawaii. Population numbers, reproductive success and causes of known adult mortality of Nene in the park were summarised from 1989 to 1999 in order to determine population and reproductive trends. Reproductive data were also pooled across years to determine overall reproductive success at several sites within the park. Numbers in the park generally increased throughout the decade, from 153 birds in 1990/1991 to 203 in 1997/1998. Annual hatching success averaged 55%, whereas annual fledgling production averaged 11 birds. Fledgling production varied among sites, from 0 at Mauna Loa and Kipuka Kahalii to

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