Elvina Henriette

Conservation introduction as a tool for recovery of endangered species

Territoriality and demography of the Seychelles white-eye (Zosterops modestus) on Frégate Island

• Broschiertes Buch

Produktbeschreibung

Conservation introduction can be used as a tool to establish self-sustaining populations of species threatened with extinction. The endemic Seychelles white-eye (Zosterops modestus) originally confined to Conception and Mahé islands (280-390 individuals in 1997) was transferred to Frégate (37 birds in 2001-2003), Ile du Nord (25 birds in 2007) and Cousine (23 birds in 2007) islands. By 2010, the metapopulation increased to 550-650 birds. The development of transferred and source populations were monitored, particularly on Frégate. Territories on Frégate are spatially aggregated, relatively large (mean 1.34 ha) and predominantly found in broad-leaf forest. The 'Core-weighting kernel' was the most efficient method in measuring territory size. We confirm the extended year-round breeding season on Frégate (only c.9 months on Conception), as well as reproduction of first-year birds. We also reveal the first case of suspected polyterritoriality for this species. We show that the species has high adult survival rates (76%). We conclude that creating new island populations has been advantageous for the species and offers more scope for the metapopulation to grow.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 224
• Erscheinungstermin: 22. Juli 2016
• Englisch
• Abmessung: 220mm x 150mm x 14mm
• Gewicht: 352g
• ISBN-13: 9783659895678
• ISBN-10: 3659895679
• Artikelnr.: 45603075

Autorenporträt

Elvina Henriette is a Seychellois Doctor specialised in ecology. She is a conservation biologist and practitioner who has accumulated substantial experience in the conservation of endangered species, management of invasive species, species reintroductions, faunistic inventories and island restoration techniques.