Data on geographical range size and climatic niche variables for 72 species of western North American Mimulus

This file contains all variables used in Fig. 2b of “Identifying the paths leading to variation in geographical range size in western North American monkeyflowers” by Sheth et al. 2014 in Journal of Biogeography. Please see publication for more details. The columns are as follows: species: species of Mimulus extent_of_occurrence: geographic range size measured by minimum convex polygon (in units of kilometers squared) encompassing the occurrence points of each species number_of_pixels_occupied: number of 5-arc minute pixels in which each species is known to occur latitudinal_extent: latitudinal extent (in decimal degrees) encompassed by the occurrence points of each species longitudinal_extent: longitudinal extent (in decimal degrees) encompassed by the occurrence points of each species niche_breadth: multivariate climatic niche breadth of each species niche_position: multivariate climatic niche position of each species amount_of_suitable_habitat: number of 5-arc minute pixels defined as climatically suitable for each species connectivity: connectivity of climatically suitable habitat (in km multiplied by -1) occupancy_of_suitable_habitat: number of climatically suitable grid cells in which each species is known to occur (number_of_pixels_occupied/amount_of_suitable_habitat)

本文件包含Sheth等人2014年发表于"Journal of Biogeography"的论文"Identifying the paths leading to variation in geographical range size in western North American monkeyflowers"中图2b所使用的全部变量。更多详细信息请参阅该正式发表文献。各列字段如下：
1. species：猴面花属（Mimulus）物种名称
2. extent_of_occurrence：以最小凸多边形（minimum convex polygon）测算的地理分布范围大小，单位为平方千米，涵盖各物种的全部分布点位
3. number_of_pixels_occupied：各物种已知分布所占据的5弧分像素总数量
4. latitudinal_extent：各物种分布点位所覆盖的纬度跨度，单位为十进制度
5. longitudinal_extent：各物种分布点位所覆盖的经度跨度，单位为十进制度
6. niche_breadth：各物种的多变量气候生态位宽度
7. niche_position：各物种的多变量气候生态位位置
8. amount_of_suitable_habitat：被定义为气候适宜各物种生存的5弧分像素总数量
9. connectivity：气候适宜生境的连通性（单位为千米，数值已乘以-1）
10. occupancy_of_suitable_habitat：各物种已知存在的气候适宜栅格单元数量，计算公式为number_of_pixels_occupied/amount_of_suitable_habitat