Table 1: Complementary county subsets for the different groups of endangered species of the United States

Where are Endangered Species Found in the United States?

Table 1: Complementary county subsets for the different groups of endangered species of the United States.

Taxon

Species

Counties

Area (%)

Power (SE)

Plants

Mollusks

Arthropods

Fish

Herptiles

Birds

Mammals

503

107

136

9.61

1.15

2.38

4.76

0.97

1.59

2.08

1.63 (0.02)

2.92 (0.08)

2.44 (0.11)

1.24 (0.04)

3.26 (0.17)

4.00 (0.16)

2.61 (0.08)

Species, number of threatened species in each taxon; Counties, number of counties in the complementary subset; Area, percentage of the total U.S. landmass covered by the complementary subset; Power, index that expresses how well each group indicates endangered species richness in other groups; SE, standard error. Power values are means of 200 bootstrapping runs (data taken from Dobson et al. 1997, please see this reference for additional details.)