Huey, Raymond B.2004-11-222007-06-132004-11-222007-06-131978-01R. B. Huey, The American Naturalist, 112(983): 225-229.0003-0147http://hdl.handle.net/1773/2023Moving up or down a mountain from a given site, one encounters faunas that differ by varying degrees. The elevational separation between sites obviously influences the magnitude of that difference (faunal similarity is inversely proportional to elevational separation); local environmental discontinuities, steepness of slope (Beals 1969), and certain global factors may also affect these “between-altitude” faunal similarities. Here I examine one possible global relationship, that of latitude and the extent of faunal similarity for reptilian and amphibian communities at different altitudes. I gathered these data to test Janzen’s (1967) hypothesis that mountains are effectively “higher” to animals in the tropics; if this is true, then “between-altitude” faunal similarity should vary directly with latitude.428560 bytesapplication/pdfen-USArticle