Local Landscape Position Impacts Demographic Rates in a Widespread North American Steppe Bunchgrass

Abstract

Photo 1. Widely spaced bluebunch wheatgrass (Pseudoroegneria spicata) surrounded by smaller annual grasses on a south-facing slope at Wallula Gap Biological Station, WA, USA. Photo credit: Timothy Parker. Photo 2. Densely distributed bluebunch wheatgrass (Pseudoroegneria spicata) and other perennial bunchgrasses on a north-facing slope at Wallula Gap Biological Station, Washington, USA. Photo credit: Timothy Parker. Photo 3. A comparison between a north-facing slope (left) and a hotter, drier south-facing slope (right) at Wallula Gap Biological Station, Washington, USA. Note the widely spaced green clumps of bluebunch wheatgrass (Pseudoroegneria spicata) on the south-facing slope in the foreground and the much denser concentration of green perennial grasses, many of which are bluebunch wheatgrass, on the north-facing slopes. Photo credit: Timothy Parker. These photographs illustrate the article “Local landscape position impacts demographic rates in a widespread North American steppe bunchgrass” by Shriver et al. published in Ecosphere. https://doi.org/10.1002/ecs2.3351