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Viac informácií o knihe Conservation introduction as a tool for recovery of endangered species

• Parametre knihy
• Anotácia kniha
• Obľúbené z iného súdka

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Anotácia knihy

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.

Parametre knihy

• Celý názov: Conservation introduction as a tool for recovery of endangered species
• Podnázov: Territoriality and demography of the Seychelles white-eye (Zosterops modestus) on Frégate Island
• Autor: Elvina Henriette
• Jazyk: Angličtina
• Väzba: Brožovaná
• Počet strán: 224
• EAN: 9783659895678
• ID: 13926241
• Nakladateľ: LAP Lambert Academic Publishing
• Hmotnosť: 350 g
• Rozmery: 220 × 150 × 13 mm
• Rok vydania: 2016

Obľúbené z iného súdka

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