Physical Sciences and Mathematics Commons^™

Daytime Summer Microclimate Influence Of Large Woody Debris On Dewatered Sediments In Lake Mills, Wa Following Dam Removal, Mariah J. Colton

WWU Graduate School Collection

In 2014, dam removal from the Elwha River, Washington state, exposed large areas of previously submerged sediment. The Olympic National Park placed ~100 large logs on 2 ha of exposed sediment to promote plant establishment. I quantified patterns of three microclimate variables near logs: wind speed at 10-cm height (u₁₀), sediment temperature (T_S), and evaporation rate (E); and their relationships to broader environmental factors. The northern-most log, exposed to northerly winds, was measured along 3-m perpendicular transects 14 times during August and September 2015. I determined nonlinear and multilevel regressions to investigate …