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- W2057293357 abstract "We analysed population trends of 24 wildfowl species in Mexico. Wildfowl numbers peaked during the early 1980s; lowest counts were recorded in 1997. Total wildfowl numbers (all species combined) and duck numbers (duck species combined) showed significant short-term (1981–2000) declines, while geese (goose species combined) showed a significant long-term (1961–2000) increase. Six wildfowl species suffered significant long-term declines, while four showed increases. During 1981–2000, 11 species declined, but none had significant increases. Redhead (Aythya americana), Mexican duck (Anas diazi), northern pintail (A. acuta) and black brant (Branta bernicla nigricans) should be given high conservation priority because of the high proportions of their North American populations in Mexico. Declining numbers of the later two species should trigger further investigation into the possibility of assigning them legal protection status. Other species with apparent declines in numbers should also be more closely monitored. For setting hunting limits in the country, the population status of each species should be accounted for, as well as the condition of breeding populations the previous spring. Other species with poor data or combined counts should be targeted for basic population studies. We suggest that the mid-winter counts be expanded to cover non-surveyed areas and conducted every year to more precisely detect wildfowl population change. Integrated to a site-selection analysis, the information presented here can provide the basis for a wildfowl conservation strategy in Mexico." @default.
- W2057293357 created "2016-06-24" @default.
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- W2057293357 date "2004-02-01" @default.
- W2057293357 modified "2023-10-03" @default.
- W2057293357 title "Wildfowl population trends in Mexico, 1961–2000: a basis for conservation planning" @default.
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- W2057293357 doi "https://doi.org/10.1016/s0006-3207(03)00088-0" @default.
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