A5037321865- Freshwater macroinvertebrate diversity and ecology
- Fish Ecology and Management Studies
- Soil and Water Nutrient Dynamics
- Species Distribution and Climate Change
- Aquatic Invertebrate Ecology and Behavior
- Hydrology and Sediment Transport Processes
- Analytical chemistry methods development
- Environmental DNA in Biodiversity Studies
- Soil erosion and sediment transport
- Diatoms and Algae Research
- Science, Research, and Medicine
- Pharmaceutical and Antibiotic Environmental Impacts
- Educator Training and Historical Pedagogy
- Infrastructure Resilience and Vulnerability Analysis
- Flood Risk Assessment and Management
- Water Treatment and Disinfection
- Fire effects on ecosystems
- Geography Education and Pedagogy
- Water Quality and Resources Studies
- Aeolian processes and effects
- Information and Cyber Security
- Geographic Information Systems Studies
Portland State University
2016-2024
University of Illinois Urbana-Champaign
2016
U.S. Army Engineer Research and Development Center
2016
United States Army
2016
Cold Regions Research and Engineering Laboratory
2016
Abstract Rising water temperatures in rivers due to climate change are already having observable impacts on river ecosystems. Warming has both direct and indirect aquatic life, further aggravates pervasive issues such as eutrophication, pollution, the spread of disease. Animals can survive higher through physiological and/or genetic acclimation, behavioral phenological change, range shifts more suitable locations. As such, those animals that adapted cool‐water regions typically found high...
Citizen science has the potential to generate valuable biologic data for use in restoration monitoring, while also providing a unique opportunity public participation local projects. In this article, we describe and evaluate citizen program designed monitor effect of stream construction disturbance on macroinvertebrate community. We present results 7‐year study conducted by scientists utilizing Before‐After‐Control‐Impact (BACI) design. Trait‐based showed strong response return...
Abstract Background Historically, wildfire regimes produced important landscape‐scale disturbances in many regions globally. The “pyrodiversity begets biodiversity” hypothesis suggests that wildfires generate temporally and spatially heterogeneous mosaics of severity post‐burn recovery enhance biodiversity at landscape scales. However, river management has often led to channel incision disconnects rivers from their floodplains, desiccating floodplain habitats depleting groundwater. In...
The purpose of this investigation was to systematically examine the variability associated with temporally-oriented invertebrate data collected by citizen scientists and consider value such for use in stream management. Variability estimated three sources variation: sampling, within-reach spatial long-term temporal. Long-term temporal were also evaluated using ordinations an Index Biotic Integrity (IBI). Through two separate investigations over 11-year study period, participants more than...
Abstract This paper presents the design, implementation and assessment of Columbia River Basin Environmental Research Project (CERP) curriculum. CERP is an online inquiry-based, regional geographic curriculum designed to improve technology skills content knowledge about water quality watershed-level processes. Student attitudes gains were assessed over a three-year period in freshmen level general education inquiry class using pre- -post surveys work sample analysis. Results show students...
ABSTRACT Stream restoration is a proposed climate adaptation tool; however, outcomes of floodplain on stream temperature have been debated. Despite growing number studies that investigated water in restored streams, few quantified variations new habitat types created by hydrogeomorphic processes to explore the effects aquatic macroinvertebrates. We evaluated hypotheses: (1) increases diversity, (2) diversity variability, and (3) macroinvertebrate assemblage associations. In August 2021, we...
A reconnaissance of pharmaceutical chemicals in urban streams the Tualatin River basin was conducted July 2002 an effort to better understand occurrence and distribution such compounds, determine whether they might be useful indicators human-related stream contamination. Of 21 metabolites tested, only 6 (acetaminophen, caffeine, carbamazepine, codeine, cotinine, sulfamethoxazole) were detected filtered samples from 10 sites. The concentrations most compounds relatively low (less than 0.05...
Abstract A primary goal of river restoration is to reestablish lost ecological functions. Yet the impact on diatom assemblages and algal biomass in a stream rarely addressed scientific literature reporting outcomes projects aimed at improving riverine habitat. To investigate potential for using benthic diatoms as indicators benefits habitat associated with restoration, we conducted pilot study Whychus Creek, headwater tributary Deschutes River Oregon, USA. As part work project college...
High school and middle students mingled with scientists from all over the world when they presented their posters at Joint Aquatic Sciences Meeting.
Streams systems draining upland landscapes provide valuable ecosystem services, but they are vulnerable to incision and channelization caused by anthropogenic disturbance. Restoring a degraded stream its pre‐disturbance condition reconnecting the channel historical floodplain aims recover lost hydro‐morphological processes functions. Seeking evidence indicate whether that aim is met in practice, we examined diatoms macroinvertebrate trophic structures three reaches of Whychus Creek, Oregon,...
Abstract Flooding of the town Forres, Scotland prompted implementation a flood alleviation scheme (FAS) featuring low earth‐fill dam constructed upstream to create retention area, limiting peak discharges entering urban area. Flow through is controlled by weir, and it was recognised that if coarse sediment, large wood, and/or debris collected at weir this could adversely affect its performance. To ensure reliable operation “Burn Management Works” (BMW) were designed reconnect embanked,...
Streams and stream macroinvertebrates are ideal natural systems for ecological inquiry. We present three simple experiments that students can use to conduct field-based investigations which illustrate the importance of algae-based food webs in streams measure effects sediment pollution (scour deposition) on processes. Over past 5 years, we have conducted these 19 times with our students. report results reliability make suggestions other educators who may want them.
Teaching students about ecological disturbance provides them with an understanding of a critical factor that shapes the structure and function biological communities in environmental systems. This article describes four simple experiments related curriculum can use to conduct inquiry around theme stream ecosystems: insect drift, colonization, life history, intermediate hypothesis. Over five years, our conducted these 57 times; 79% resulted data supported students’ hypotheses. Our findings...