Ecological Archives A020-008-A3

Chad C. Jones, Steven A. Acker, and Charles B. Halpern. 2010. Combining local- and large-scale models to predict the distributions of invasive plant species. Ecological Applications 20:311–326.

Appendix C. Climate variable parameters in climate envelope models.

TABLE C1. Climate parameters used to develop climate envelope models. Native range models are based on data from Europe and invaded range models based on data from the contiguous United States. Numbers indicate the extreme values for each variable among locations where the species occur after removing the 5% most extreme values (2.5% at each extreme). Min. indicates that the lower extreme was used (all three variables); Max. indicates that the upper extreme was also used (Mean July temperature).

Model

n

Annual precipitation, Min. (cm)

Mean January temperature, Min. (°C)

Mean July temperature (°C)

Min.
Max.

Geranium robertianum

Native range

1886

55.7

-8.8

11.8

18.4

Invaded range

93

70.5

-7.7

15.5

23.5

Hedera helix

Native range

389

48.5

-3.8

14.4

25.3

Invaded range

59

51.8

-3.4

15.5

27.5

Ilex aquifolium

Native range

183

64.7

-2.9

12.7

21.7

Invaded range

49

54.2

 1.2

15.6

19.7


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