TY  - RPRT
TI  - Ecology and the ratchet of events: Climate variability, niche dimensions, and species distributions
AU  - S.T. Jackson
AU  - J.L. Betancourt
AU  - R.K. Booth
AU  - S.T. Gray
PY  - 2009
DO  - 10.1073/pnas.0901644106
UR  - https://pubs.usgs.gov/publication/70034289
ID  - 70034289
ER  -