Body condition and abundance of the endemic passeriformes of Fernando de Noronha, Brazil
| Autor: | Luna, Cecília Licarião Barreto |
|---|---|
| Přispěvatelé: | Mestre, Luiz Augusto Macedo, Zanette, Lorenzo Roberto Sgobaro, Rechetelo, Juliana |
| Jazyk: | portugalština |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Repositório Institucional da Universidade Federal do Ceará (UFC) Universidade Federal do Ceará (UFC) instacron:UFC |
| Popis: | Habitat quality - resource availability and environmental conditions - affects body condition of birds, and when altered can lead to population decline and extinctions. Thus, we evaluated body condition and abundance of Noronha Elaenia (Elaenia ridleyana) and Noronha Vireo (Vireo gracilirostris) in anthropic and preserved areas in Fernando de Noronha, and sampled vegetation cover and food resource availability. We measured body condition (weight, fat, feather wear, ectoparasites, brood patch and cloacal protuberance) of 45 Noronha Elaenia and 52 Noronha Vireo, food resource availability (10 sample points of malaise trap and 20 of entomological umbrella) and vegetal cover (20 sample points). We observed that feathers were worn in anthropic area for Noronha Elaenia (X2 = 15.26; p = 0.009) and Noronha Vireo (X2 = 13.10; p = 0.004) and a greater number of Noronha Elaenia individuals with brood patches in the preserved area. The abundance of Noronha Elaenia and Noronha Vireo was greater in preserved area (GLMM Chi2 = 9.91, p = 0.001, GLMM Chi2 = 56.61, p |
| Databáze: | OpenAIRE |
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