Population limitation in Palaearctic-African migrant passerines
نویسندگان
چکیده
منابع مشابه
Potential impacts of climate change on the winter distribution of Afro-Palaearctic migrant passerines.
We modelled the present and future sub-Saharan winter distributions of 64 trans-Saharan migrant passerines to predict the potential impacts of climate change. These predictions used the recent ensemble modelling developments and the latest IPCC climatic simulations to account for possible methodological uncertainties. Results suggest that 37 species would face a range reduction by 2100 (16 of t...
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Wing morphology strongly affects flight performance which may consequently decline during feather moult due to the creation of feather gaps in the wing. Hence, the size and shape of moult-related wing gap may directly affect flight capacity. Here I examined the rare divergent primary moult sequence compared to the more common descendant moult sequence. In the divergent moult, the focus of prima...
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Eleven species of Neotropical migrant passerines collected in Illinois (USA) during May 1996, were analyzed for the presence of organochlorine (OC) pesticides. At least one of five OC pesticide residues was detected in 66 of 72 birds, representing all species examined. The contaminants most frequently detected were p,p'-DDE, dieldrin and heptachlor epoxide, all of which were present in the 10-3...
متن کاملSexually transmitted infections in an African migrant population in Portugal: a base-line study.
BACKGROUND For geographical and recent historic reasons, Portugal is a gateway and home for immigration from sub-Saharan countries. Misconceptions related to these populations often lead to consider them as high-frequency clusters for dissemination of sexually transmitted infections (STIs). Epidemiological evidence-based data is needed to elucidate these issues and baseline prevalence studies a...
متن کاملNutrient intake trends among African-Caribbeans in Britain: a migrant population and its second generation.
OBJECTIVE To explore British African-Caribbean (AfC) nutrient intake by migration status (place of birth), diet (traditional Caribbean or more European) and age and relate this ecologically to coronary heart disease (CHD) mortality rates. DESIGN Cross-sectional. SETTING Inner-city Manchester, UK. SUBJECTS Two hundred and fifty-five adults of AfC origin aged 25-79 years, randomly sampled f...
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ژورنال
عنوان ژورنال: Ibis
سال: 2008
ISSN: 0019-1019
DOI: 10.1111/j.1474-919x.1992.tb04742.x