Northern Rocky Mountain Science Center (NOROCK)
Linking spring phenology with mechanistic models of host movement to predict disease transmission risk
Disease models typically focus on temporal dynamics of infection, while often neglecting environmental processes that determine host movement. In many systems, however, temporal disease dynamics may be slow compared to the scale at which environmental conditions alter host space-use and accelerate disease transmission.Using a mechanistic movement...Merkle, Jerod A.; Cross, Paul C.; Scurlock, Brandon M.; Cole, Eric K.; Courtemanch, Alyson B.; Dewey, Sarah R.; Kauffman, Matthew J.
A probe-based quantitative PCR assay for detecting Tetracapsuloides bryosalmonae in fish tissue and environmental DNA water samples
A probe-based quantitative real-time PCR assay was developed to detect Tetracapsuloides bryosalmonae, which causes proliferative kidney disease in salmonid fish, in kidney tissue and environmental DNA (eDNA) water samples. The limits of detection and quantification were 7 and 100 DNA copies for calibration standards and T. bryosalmonae...Hutchins, Patrick; Sepulveda, Adam; Martin, Renee; Hopper, Lacey
Climate change and alpine stream biology: progress, challenges, and opportunities for the future
In alpine regions worldwide, climate change is dramatically altering ecosystems and affecting biodiversity in many ways. For streams, receding alpine glaciers and snowfields, paired with altered precipitation regimes, are driving shifts in hydrology, species distributions, basal resources, and threatening the very existence of some habitats and...Hotaling, Scott; Finn, Debra S.; Giersch, J. Joseph; Weisrock, David W.; Jacobsen, Dean
Guest editorial: Aquatic science in the Northwest
In recent years, Northwest Science has seen a significant increase in the number of submissions representing aquatic science. Our region is punctuated by aquatic systems. The current issue in particular, presents a number of new aquatic science contributions. Accordingly, Northwest Science invited the authors of this guest editorial to...Sepulveda, Adam; Ray, Andrew M.
Novel application of explicit dynamics occupancy models to ongoing aquatic invasions
Identification of suitable habitats, where invasive species can establish, is an important step towards controlling their spread. Accurate identification is difficult for new or slow invaders because unoccupied habitats may be suitable, given enough time for dispersal, while occupied habitats may prove to be unsuitable for establishment.To...Sepulveda, Adam J.
Pneumonia in bighorn sheep: Risk and resilience
Infectious disease was an important driver of historic declines and extirpations of bighorn sheep (Ovis canadensis) in North America and continues to impede population restoration and management. Domestic sheep have long been linked to pneumonia outbreaks in bighorn sheep and this association has now been confirmed in 13 captive commingling...Cassirer, E. Frances; Manlove, Kezia R.; Almberg, Emily S.; Kamath, Pauline; Cox, Mike; Wolff, Peregrine L.; Roug, Annette; Shannon, Justin M.; Robinson, Rusty; Harris, Richard B.; Gonzales, Ben J.; Plowright, Raina K.; Hudson, Peter J.; Cross, Paul C.; Dobson, Andrew; Besser, Thomas E.
Potential paths for male-mediated gene flow to and from an isolated grizzly bear population
For several decades, grizzly bear populations in the Greater Yellowstone Ecosystem (GYE) and the Northern Continental Divide Ecosystem (NCDE) have increased in numbers and range extent. The GYE population remains isolated and although effective population size has increased since the early 1980s, genetic connectivity between these populations...Peck, Christopher P.; van Manen, Frank T.; Costello, Cecily M.; Haroldson, Mark A.; Landenburger, Lisa; Roberts, Lori L.; Bjornlie, Daniel D.; Mace, Richard D.
Projected warming portends seasonal shifts of stream temperatures in the Crown of the Continent Ecosystem, USA and Canada
Climate warming is expected to increase stream temperatures in mountainous regions of western North America, yet the degree to which future climate change may influence seasonal patterns of stream temperature is uncertain. In this study, a spatially explicit statistical model framework was integrated with empirical stream temperature data (...Jones, Leslie A.; Muhlfeld, Clint C.; Marshall, Lucy A.
Spatially explicit population estimates for black bears based on cluster sampling
We estimated abundance and density of the 5 major black bear (Ursus americanus) subpopulations (i.e., Eglin, Apalachicola, Osceola, Ocala-St. Johns, Big Cypress) in Florida, USA with spatially explicit capture-mark-recapture (SCR) by extracting DNA from hair samples collected at barbed-wire hair sampling sites. We employed a clustered sampling...Humm, J.; McCown, J. Walter; Scheick, B.K.; Clark, Joseph D.
Statistical design and analysis for plant cover studies with multiple sources of observation errors
1.Effective wildlife habitat management and conservation requires understanding the factors influencing distribution and abundance of plant species. Field studies, however, have documented observation errors in visually estimated plant cover including measurements which differ from the true value (measurement error) and not observing a species...Wright, Wilson; Irvine, Kathryn M.; Warren, Jeffrey M .; Barnett, Jenny K.
Declines revisited: Long-term recovery and spatial population dynamics oftailed frog larvae after wildfire
Drought has fueled an increased frequency and severity of large wildfires in many ecosystems. Despite an increase in research on wildfire effects on vertebrates, the vast majority of it has focused on short-term (< 5 years) effects and there is still little information on the time scale of population recovery for species that decline in...Hossack, Blake R.; Honeycutt, Richard
Widespread legacy brine contamination from oil production reduces survival of chorus frog larvae
Advances in drilling techniques have facilitated a rapid increase in hydrocarbon extraction from energy shales, including the Williston Basin in central North America. This area overlaps with the Prairie Pothole Region, a region densely populated with wetlands that provide numerous ecosystem services. Historical (legacy) disposal practices often...Hossack, Blake R.; Puglis, Holly J.; Battaglin, William A.; Anderson, Chauncey; Honeycutt, Richard; Smalling, Kelly