Protected cerrado fragments grow up and lose even metapopulational birds in central São Paulo, Brazil

Brazilian Journal of Biology

Edwin O. Willis¹ 

[1] ,Universidade Estadual Paulista Departamento de Zoologia Rio Claro SP ,Brazil

关键词: birds;    cerrado;    extinctions;    forest growth;    metapopulations;    savannas;    aves;    cerrado;    crescimento florestal;    extinção;    metapopulações;    savanas;   

DOI  :  10.1590/S1519-69842006000500008

来源: SciELO

【 摘 要 】

Moderately dense woodland (cerradão) grew in two isolated patches of bushy savanna (cerrado) in central São Paulo over 23 years of bird censuses. Various uncommon birds were lost and some forest species were permanently gained. Fall and winter fruits attract long and short-distance migrants. Woodpeckers and some birds that nest in their holes seem to disappear during tree growth. Some birds in weedy areas nearby disappeared when the pastures replaced these areas, however sugar cane reduced the numbers of birds even more up to the point when some areas became pastures once more. Even travel-prone species disappear with vegetation growth in cerrado protected fragments, and therefore "metapopulations" may not survive over time, only in space.

【 授权许可】

CC BY   
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