Africa's avifauna
نویسندگان
چکیده
منابع مشابه
Africas Role in Multilateral Trade Negotiations
1846 Countries in Sub-Saharan Africa won fewer concessions on their exports in the Uruguay Round than did other developing countries, but they still emerged facing fewer or lower restrictions than others. They should be more active in the next Round, focusing negotiations not on trade preferences but on bound most-favored-nation tariff reductions. Summary findings Openness and liberal trade pol...
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Results of the study by Blackburn et al. (2004a) of avifauna on oceanic islands suggest that distance from the mainland and time since European colonization have major influences on species extinctions and that island area is a significant but secondary contributing factor. After augmenting the data of the study on geographical properties for some of the islands they examined, we used a causal ...
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ژورنال
عنوان ژورنال: Nature
سال: 1982
ISSN: 0028-0836,1476-4687
DOI: 10.1038/300558a0