Evaluation of Germination Niche Breadth Along an Elevational Gradient

Ecological generalization, or an increase in niche breadth, has been shown to vary consistently with latitude and elevation. Specifically, comparative studies in plant taxa have documented a strong increase in niche breadth with elevation, often attributed to enhancing the ability to survive in more variable conditions at higher elevations. At present, the following questions remain:

[1] Does niche breadth increase with elevation within a single species?

[2] Is an increase in niche breadth with elevation adaptive?

PI plans to conduct a pilot study in summer 2015 to assess [1] and to inform selection of a potential future study system with which to evaluate [2]. As such, she will examine if the breadth of the germination niche changes along an elevational gradient in multiple species native to the southern Appalachian mountains.