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Full-Text Articles in Life Sciences
Community Structure Of Benthic Microbial Mats At Hydrothermal Springs In Crater Lake, Oregon, Amanda Stromecki
Community Structure Of Benthic Microbial Mats At Hydrothermal Springs In Crater Lake, Oregon, Amanda Stromecki
WWU Graduate School Collection
Crater Lake, Oregon is an oligotrophic freshwater caldera lake fed by thermally and chemically-enriched hydrothermal springs. These vents distinguish Crater Lake from other freshwater systems and provide a unique ecosystem for study. This study examines the microbial community structure of hydrothermal mat communities found in the bottom of Crater Lake. Small subunit rRNA gene amplicon sequencing from eight microbial mats was used to assess community structure. These findings revealed a relatively homogeneous, yet diverse bacterial community. High alpha diversity and low beta diversity indicates that these communities are likely fueled by homogeneous and consistent hydrothermal fluids. An examination of autotrophic …
Evaluation Of The Stream Function Assessment Methodology (Sfam) In Watersheds Of The Puget Sound Lowlands, Michelle Bahnick
Evaluation Of The Stream Function Assessment Methodology (Sfam) In Watersheds Of The Puget Sound Lowlands, Michelle Bahnick
WWU Graduate School Collection
Effective stream management requires identification of anthropogenic degradation effects on stream functioning. However, few stream assessment protocols aim to evaluate stream functions (i.e., ecosystem processes), integrate multiple disciplines, and combine stream reach assessment with landscape-level context. To address these shortcomings, several agencies in Oregon collaborated to develop the Stream Function Assessment Methodology (SFAM). However, SFAM has yet to be tested against established protocols and some SFAM metrics have no equivalent data sources outside of Oregon. I conducted SFAM (2015 draft version) on 36 stream reaches in Water Resource Inventory Area 8 in Washington State. I compared SFAM scores to commensurate …