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Date Permissions Signed
Date of Award
Master of Science (MS)
Matthews, Robin A., 1952-
Bodensteiner, Leo R., 1957-
Sofield, Ruth M.
The objective of my study was to characterize the water quality conditions and algal species composition of six mountain lakes in the North Cascades of Washington, USA. Exploratory data analysis examined water quality conditions and algal species composition separately, then determined if they were related. The lakes exhibited median temperatures from 13.3 °C to 20.8 °C, had nitrate and soluble reactive phosphate concentrations below 100 µg/L and 6 µg/L, respectively, were slightly acidic (pH 5.1-6.9), and had median dissolved oxygen concentrations ranging from 6.7 mg/L to 10.6 mg/L. Over 340 non-diatom algal taxa were identified. Algal species richness was positively correlated with water temperature (τ = 0.353, p-value
Mountain Lakes, Biomonitoring
Western Washington University
Subject – LCSH
Freshwater algae--Ecology--North Cascades (B.C. and Wash.); Algal communities--North Cascades (B.C. and Wash.); Water quality biological assessment--North Cascades (B.C. and Wash.); Lake ecology--North Cascades (B.C. and Wash.)
North Cascades (B.C. and Wash.)
Copying of this thesis in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this thesis for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.
Lawlor, Michael P., "A Multivariate Analysis of the Relationship Between the Water Quality Conditions and Algal Species Composition of Six Mountain Lakes in the North Cascades, WA, USA" (2019). WWU Graduate School Collection. 843.