Publications
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A streamflow permanence classification model for forested streams that explicitly accounts for uncertainty and extrapolation A streamflow permanence classification model for forested streams that explicitly accounts for uncertainty and extrapolation
Accurate mapping of headwater streams and their flow status has important implications for understanding and managing water resources and land uses. However, accurate information is rare, especially in rugged, forested terrain. We developed a streamflow permanence classification model for forested lands in western Oregon using the latest light detection and ranging-derived hydrography...
Authors
Jonathan D. Burnett, Kristin Jaeger, Sherri Johnson, Steven M. Wondzell, Jason B. Dunham, Matthew Irwin Barker, Emily Heaston, Nathan Chelgren, Michael G. Wing, Brian Staab, Michael E. Brown
Global terrestrial nitrogen fixation and its modification by agriculture Global terrestrial nitrogen fixation and its modification by agriculture
Biological nitrogen fixation (BNF) is the largest natural source of new nitrogen (N) that supports terrestrial productivity1,2, yet estimates of global terrestrial BNF remain highly uncertain3,4. Here we show that this uncertainty is partly because of sampling bias, as field BNF measurements in natural terrestrial ecosystems occur where N fixers are 17 times more prevalent than their...
Authors
Carla R. Reis Ely, Steven Perakis, Cory C. Cleveland, Duncan Menge, Sasha Reed, Benton Taylor, Sarah A. Batterman, Christopher Clark, Timothy E. Crews, Katherine Dynarski, Maga G. Gei, Michael J. Gundale, David F. Herridge, Sarah Jovan, Sian Kou-Giesbrecht, Mark B. Peoples, Johannes Piipponen, Emilio Rodriguez-Caballero, Verity G. Salmon, Fiona Soper, Anika P. Staccone, Bettina Weber, Christopher A. Williams, Nina Wurzburger
Simulated soundscapes and transfer learning boost the performance of acoustic classifiers under data scarcity Simulated soundscapes and transfer learning boost the performance of acoustic classifiers under data scarcity
1. The biodiversity crisis necessitates spatially extensive methods to monitor multiple taxonomic groups for evidence of change in response to evolving environmental conditions. Programs that combine passive acoustic monitoring and machine learning are increasingly used to meet this need. These methods require large, annotated datasets, which are time-consuming and expensive to produce...
Authors
Matthew Weldy, Damon Lesmeister, Tom Denton, Adam Duarte, Ben Vernasco, Amandine Gasc, Jennifer Rowe, Michael Adams, Matthew G. Betts
Metabarcoding analysis of arthropod pollinator diversity: A methodological comparison of eDNA derived from flowers and DNA derived from bulk samples of insects Metabarcoding analysis of arthropod pollinator diversity: A methodological comparison of eDNA derived from flowers and DNA derived from bulk samples of insects
Limitations of traditional insect sampling methods have motivated the development and optimisation of new non-lethal methods capable of quantifying diverse arthropod communities. Environmental DNA (eDNA) metabarcoding using arthropod-specific primers has recently been investigated as a novel way to characterise arthropod communities from the DNA they deposit on the surface of plants...
Authors
Kara Suzanne Jones, David Pilliod, Aaron Aunins
Soil-microbial communities respond less than plant communities to synthetic- or bio-herbicides applied to address the exotic grass-fire cycle in rangelands Soil-microbial communities respond less than plant communities to synthetic- or bio-herbicides applied to address the exotic grass-fire cycle in rangelands
The exotic grass-fire cycle is degrading semiarid rangelands, such as the vast areas of shrub-steppe in North America now invaded by fire-promoting cheatgrass. Chemical- or bio-herbicides are sprayed onto soils to inhibit the invaders, but information on chemical- or bio-herbicide impacts to soil microbial communities is limited. We asked how the soil-microbiome responded to the...
Authors
Brynne E Lazarus, Rebecca Mueller, Matthew Germino
Fine-scale spatial risk models to predict avian collisions with power lines Fine-scale spatial risk models to predict avian collisions with power lines
1. Avian fatalities caused by collisions with overhead power lines are an important conservation issue worldwide. Although mitigation strategies can help reduce mortalities, given their considerable cost and the vast scale of power line infrastructure, cost-effective action requires that these efforts be prioritised to areas with the highest potential risk to birds. To date, this risk...
Authors
James Pay, Elissa Cameron, Clare Hawkins, Christopher Johnson, Amelia Koch, Jason M. Wiersma, Todd E. Katzner
Constraints and enablers for meaningful consideration of plural values through integration of cultural ecosystem services (CES) in decision-making Constraints and enablers for meaningful consideration of plural values through integration of cultural ecosystem services (CES) in decision-making
This chapter presents and applies five constraint/enabler categories that influence integration of the plural values of cultural ecosystem services (CES) in decision-making, highlighting how diverse forms of CES knowledge can intersect with decision making contexts. CES make foundational contributions to human well-being, and yet they are consistently underrepresented in research...
Authors
Kristen R Hoelting, Rachelle Gould, Amanda Cravens, Brian D. Winter
Reliability of satellite-based vegetation maps for planning wildfire-fuel treatments in shrub steppe: Inferences from two contrasting national parks Reliability of satellite-based vegetation maps for planning wildfire-fuel treatments in shrub steppe: Inferences from two contrasting national parks
Protecting habitat threatened by increasing wildfire size and frequency requires identifying the spatial intersection of wildfire behavior and ecological conditions that favor positive management outcomes. In the perennial sagebrush steppe of Western North America, invasions by fire-prone annual grasses are a key concern, and management of them requires reliable maps of vegetation cover...
Authors
Samuel Price, Chad Kluender, Matthew J. Germino, Thomas Rodhouse
Effects of riparian forest thinning on resident salmonid fishes in coastal northern California catchments Effects of riparian forest thinning on resident salmonid fishes in coastal northern California catchments
Resource managers are interested in whether thinning second-growth forests may be a viable restoration strategy for stream and riparian habitats, but may be concerned about the potential impacts that increases in stream temperature associated with riparian thinning treatments may have on cold-water salmonid fishes.We evaluated the effects of riparian forest thinning on resident...
Authors
David Roon, Jason B. Dunham, Joseph Benjamin, Bret Harvey, James Bellmore
New technology for an ancient fish: A lamprey life cycle modeling tool with an R Shiny application New technology for an ancient fish: A lamprey life cycle modeling tool with an R Shiny application
Lampreys (Petromyzontiformes) are an ancient group of fishes with complex life histories. We created a life cycle model that includes an R Shiny interactive web application interface to simulate abundance by life stage. This will allow scientists and managers to connect available demographic information in a framework that can be applied to questions regarding lamprey biology and...
Authors
Dylan Gomes, Joseph Benjamin, Benjamin Clemens, Ralph Lampman, Jason B. Dunham
A partner-driven decision support model to inform the reintroduction of bull trout A partner-driven decision support model to inform the reintroduction of bull trout
Assessments of species reintroductions involve a series of complex decisions that include human perspectives and ecological contexts. Here, we present a reintroduction assessment involving bull trout (Salvelinus confluentus) using a structured decision-making process. We approached this assessment by engaging partners representing public utilities, government agencies, and Tribes with...
Authors
Joseph Benjamin, Judith Neibauer, Hugh Anthony, Jose Vazquez, Ashley Rawhouser, Jason B. Dunham
Ultrasonic deterrents provide no additional benefit over curtailment in reducing bat fatalities at an Ohio wind energy facility Ultrasonic deterrents provide no additional benefit over curtailment in reducing bat fatalities at an Ohio wind energy facility
Wind energy is important for achieving net-zero greenhouse gas emissions but also contributes to global bat mortality. Current strategies to minimize bat mortality due to collision with wind-turbine blades fall broadly into two categories: curtailment (limiting turbine operation during high-risk periods) and deterrence (discouraging bat activity near turbines). Recently, there has been...
Authors
Jeffrey Clerc, Manuela Huso, Michael Schirmacher, Michael Whitby, Cris Hein