Environmental Studies Commons^™

Creating A Comprehensive Western American/Canadian Fire Dataset, 1880-2018, Katherine Welch

WWU Graduate School Collection

The currently available fire-history data of Western North America (US/Canada) available for geographic and other analyses is largely piecemeal and difficult to find. Data from before the 1980s is scattered among many sources and held by a plethora of different agencies. The aim of this project was to change that daunting reality and provide a single dataset that would fill that data gap and make doing research on and mapping of fires in the late 19th and early 20th centuries more accessible.

This data encompasses 138 years (1880 - 2018), 12 US states, three Canadian provinces and two Canadian territories. …

Dendrochronology Of Seaside Juniper (Juniperus Maritima), Dustin Gleaves

WWU Graduate School Collection

Seaside juniper (Juniperus maritima) is a recently discovered tree species endemic to the Salish Sea region and is an as yet unutilized dendrochronological resource. This study reports the first dendrochronological investigation of the species. We sought to determine if Seaside junipers are capable of crossdating, a requirement for consideration as a dendrochronology study species, and to identify correlations between instrumental climate records and radial growth to determine climate-growth response. We collected tree core samples from Seaside juniper in five sites throughout the San Juan Islands and nearby mainland. Samples collected from one of five sites successfully crossdated. Bootstrapped …