Plant endemism in two forests in southern Bahia, Brazil

被引:236
作者
Thomas, WW [1 ]
de Carvalho, AAMV [1 ]
Amorim, AMA [1 ]
Garrison, J [1 ]
Arbelaez, AL [1 ]
机构
[1] New York Bot Garden, Inst Systemat Bot, Bronx, NY 10458 USA
关键词
Atlantic coastal forest; Bahia; Brazil; endemism; flora;
D O I
10.1023/A:1008825627656
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
An important factor in determining species rarity is the geographic distribution of species. Estimates were made of the level of endemism of the flora of two sites in the southern Bahian wet forest zone. Estimates were made for endemism in the Atlantic forest biome and for the much more restricted area of southern Bahia and northern Espirito Santo and are derived from analyses of the distributions of the species known from each area. The species checklist for each area is based on identified specimens resulting from intensive collecting in a forest near Serra Grande (40 km north of Ilheus) and the Una Biological Reserve (40 km south of Ilheus). Slightly less than half of the species (45.2% at Una and 47.7% at Serra Grande) have widespread distributions and 7.4% at each site are disjunct between the coastal forests and Amazonia. In the Una Reserve, 44.1% of the species are endemic to the coastal forest and 28.1% endemic to southern Bahia and northern Espirito Santo. At Serra Grande, 41.6% of the species are endemic to the coastal forest and 26.5% endemic to southern Bahia and northern Espirito Santo.
引用
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页码:311 / 322
页数:12
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