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Thibault M., Vidal Eric, Potter M. A., Sanchez T., Brescia F. (2018). The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot. PLoS One, 13 (2), e0192249 [18 p.]. ISSN 1932-6203

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Lien direct chez l'éditeur doi:10.1371/journal.pone.0192249

En Libre Accès sur HAL https://hal.archives-ouvertes.fr/hal-01793845

Titre
The invasive Red-vented bulbul (Pycnonotus cafer) outcompetes native birds in a tropical biodiversity hotspot
Année de publication2018
Type de documentArticle référencé dans le Web of Science WOS:000423793400081
AuteursThibault M., Vidal Eric, Potter M. A., Sanchez T., Brescia F.
SourcePLoS One, 2018, 13 (2), p. e0192249 [18 p.]. p. e0192249 [18 p.] ISSN 1932-6203
RésuméInvasive alien species are a major cause of biodiversity loss globally, but especially on islands where high species richness and levels of endemism accentuate their impacts. The Red vented bulbul (Pycnonotus cafer), a tropical passerine bird that has been introduced widely across locations of high conservation value, is considered an extreme pest. It is currently expanding its range in New Caledonia, one of the world's biodiversity hotspots. Decisive recommendations on management strategies are required urgently to inform local managers and policy makers, but they should be based on quantitative local evidence, not just on expert opinion. The Red-vented bulbul is widely blamed for its impacts on biodiversity, especially through competition. We used data from 2,472 point counts to explore the abundance relationships between the Red-vented bulbul and 14 other species of bird. Our results revealed a negative relationship between the occurrence of the bulbul and the mean abundance of nine species, all native (or endemic, n = 3) to the New Caledonia archipelago. In contrast, the abundance of other introduced species such as Acridotheres tristis (Common myna), Passer domesticus (House sparrow) and Spilopelia chinensis (Spotted dove) were not affected by the Red-vented bulbul. Moreover, temporal trends in the abundance of impacted species suggest that the Red-vented bulbul may cause niche contractions rather than mortality for native species in man-modified habitats. Monitoring and control of the Red-vented bulbul is recommended to prevent on-going impacts on native bird communities throughout New Caledonia, and its impact on native bird communities elsewhere should be quantified.
Plan de classementSciences du monde animal [080] ; Etudes, transformation, conservation du milieu naturel [082]
Descr. géo.NOUVELLE CALEDONIE
LocalisationFonds IRD [F B010072073]
Identifiant IRDfdi:010072073
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010072073

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