Pagenaud A., Bourgeois K., Dromzee S., Thibault Martin, Chagneau G., Barre N., Bouye E., Chartendrault V., Delelis N., Dijoux J., Patrois M., Spaggiari J., Vidal Eric. (2022). Tahiti Petrel Pseudobulweria rostrata population decline at a nickel-mining site : a critical need for adapted conservation strategies. Bird Conservation International, [Early access], [13 p.]. ISSN 0959-2709.
Titre du document
Tahiti Petrel Pseudobulweria rostrata population decline at a nickel-mining site : a critical need for adapted conservation strategies
Année de publication
2022
Auteurs
Pagenaud A., Bourgeois K., Dromzee S., Thibault Martin, Chagneau G., Barre N., Bouye E., Chartendrault V., Delelis N., Dijoux J., Patrois M., Spaggiari J., Vidal Eric
Source
Bird Conservation International, 2022,
[Early access], [13 p.] ISSN 0959-2709
New Caledonia hosts a large part of the world's breeding population of the Tahiti Petrel Pseudobulweria rostrata. This rare, cryptic and little-studied seabird nests locally in the mountains up to 1,200 m in altitude, particularly in ultramafic (i.e. nickel-rich) areas where mining activity is a major threat. The considerable development of mining activities in New Caledonia over the past decade raises concerns about its potential impacts on breeding populations through both direct habitat destruction and side effects such as pollution or repeated disturbances. This context calls for a dedicated assessment of the persistence of local populations to guide the design of an adapted conservation strategy and potential restoration programmes. We investigated the impact of mining activities on a Tahiti Petrel population when surveyed pre-mining (2004-2007) and following a period of full mining (2017-2018). The vocal activity was assessed at a total of 114 night-call count stations spread over the Koniambo massif. Areas with ground-originated vocal activity were then searched during daytime for nesting evidence. Finally, georeferenced aerial photos were used to estimate habitat degradation as the percentage of bare soil cover (PBSC) within a 400-m radius around each call count station. Our study revealed a dramatic decline in the Tahiti Petrel vocal activity and a desertion of breeding habitats during the full-mining period compared to the pre-mining period. In light of these results, we recommend designing safe breeding areas and combining restoration methods including social attraction, predation control and artificial burrows at mining sites.
Plan de classement
Sciences du milieu [021]
;
Limnologie biologique / Océanographie biologique [034]
;
Pollution [038]
;
Géologie et formations superficielles [064]
;
Sciences du monde animal [080]
Description Géographique
NOUVELLE CALEDONIE
Localisation
Fonds IRD [F B010083941]
Identifiant IRD
fdi:010083941
