Pocket gopher esker-krummholz distance data for Martinelli slope and North of Tvan, 1995.

Two ares of Niwot Ridge were examined for simultaneous occurrences of krummholz and eskers created by Thomomys talpoides (Northern pocket gopher) burrowing, to establish a relationship between snowpack and gopher habitat. The krummholz east and northeast of the Martinelli slope and the krummholz north of T-van were surveyed for the abundance of gopher eskers. Using a tape measure, the minimum and maximum distances of the eskers from the krummholz vegetation were measured, with a value of 0 m indicating that the nearest soil core was immediately adjacent to or actually underlying a branch of the tree. With the use of a compass, both the northernmost and southernmost bearings were measured from the krummholz to the esker. The krummholz were tagged at the northeasternmost point whenever possible for consistency, or the northernmost branches of the leeward side of the tree island. All measurements were taken from the nearest protruberance of the krummholz.

本研究对尼沃特岭（Niwot Ridge）的两处区域展开调查，旨在同步确认矮曲林（krummholz）与北部囊鼠（Thomomys talpoides，Northern pocket gopher）挖掘形成的土丘的共存情况，以建立积雪深度与囊鼠栖息地之间的关联。针对马蒂内利坡东侧及东北侧的矮曲林，以及T-van北侧的矮曲林，本研究统计了囊鼠土丘的分布数量。使用卷尺测量囊鼠土丘与矮曲林植被之间的最小和最大距离；当测量值为0米时，表示最近的土芯紧邻矮曲林枝条，或直接位于枝条下方。使用罗盘测量从矮曲林指向囊鼠土丘的最北方位角与最南方位角。为保证测量一致性，尽可能选取矮曲林群的最东北点作为标记点；若不可行，则选取该树岛（tree island）背风侧的最北端枝条作为标记点。所有测量均以矮曲林最邻近的凸出部分为基准点开展。