Search Results - "Som, Nicholas A."

SSNdesign—An R package for pseudo-Bayesian optimal and adaptive sampling designs on stream networks by Pearse, Alan R, McGree, James M, Som, Nicholas A, Leigh, Catherine, Maxwell, Paul, Ver Hoef, Jay M, Peterson, Erin E, Bryhn, Andreas C, .

“…Streams and rivers are biodiverse and provide valuable ecosystem services. Maintaining these ecosystems is an important task, so organisations often monitor…”
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In lieu of the paired catchment approach: Hydrologic model change detection at the catchment scale by Zégre, Nicolas, Skaugset, Arne E., Som, Nicholas A., McDonnell, Jeffrey J., Ganio, Lisa M.

“…The paired catchment approach has been the predominant method for detecting the effects of disturbance on catchment‐scale hydrology. Notwithstanding, the…”
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Using a mechanistic framework to model the density of an aquatic parasite Ceratonova shasta by Robinson, H Eve, Alexander, Julie D, Bartholomew, Jerri L, Hallett, Sascha L, Hetrick, Nicholas J, Perry, Russell W, Som, Nicholas A

“…is a myxozoan parasite endemic to the Pacific Northwest of North America that is linked to low survival rates of juvenile salmonids in some watersheds such as…”
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The mechanics of diurnal thermal stratification in river pools: Implications for water management and species conservation by Buxton, Todd H., Lai, Yong G., Som, Nicholas A., Peterson, Eric, Abban, Ben

“…We examined conditions that form or prevent thermal stratification in river pools using field measurements, statistical modelling, and three‐dimensional (3D)…”
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Restoration pulse flows from a California dam temporarily increase drifting invertebrate biomass concentration by Williamshen, Jasmine S., O'Dowd, Alison P., De Juilio, Kyle, Som, Nicholas A., Ward, Darren M., Williamshen, Brian O.

“…•This study examined the effects of dam-release pulse flows on invertebrate drift.•Invertebrate biomass concentration responded inconsistently across pulse…”
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Probabilistic accounting of uncertainty in forecasts of species distributions under climate change by Wenger, Seth J., Som, Nicholas A., Dauwalter, Daniel C., Isaak, Daniel J., Neville, Helen M., Luce, Charles H., Dunham, Jason B., Young, Michael K., Fausch, Kurt D., Rieman, Bruce E.

“…Forecasts of species distributions under future climates are inherently uncertain, but there have been few attempts to describe this uncertainty…”
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From site to system: Approaches for producing system‐wide estimates of fish habitat in large rivers by Robinson, H. Eve, Henderson, Mark J., Perry, Russell W., Goodman, Damon H., Som, Nicholas A.

“…Worldwide, many productive rivers are dam‐regulated and rely on flow management strategies that must balance support of ecological processes with human water…”
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A mapping technique to evaluate age-0 salmon habitat response from restoration by Goodman, Damon H., Som, Nicholas A., Alvarez, Justin, Martin, Aaron

“…To combat decades of anthropogenic degradation, restoration programs seek to improve ecological conditions through habitat enhancement. Rapid assessments of…”
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Integrating models to predict distribution of the invertebrate host of myxosporean parasites by Alexander, Julie D., Bartholomew, Jerri L., Wright, Katrina A., Som, Nicholas A., Hetrick, Nicholas J.

“…Manayunkia speciosa, a freshwater polychaete, is the invertebrate host of myxosporean parasites that negatively affect salmonid populations in the Pacific…”
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Habitat Suitability Criteria via Parametric Distributions: Estimation, Model Selection and Uncertainty by Som, Nicholas A., Goodman, Damon H., Perry, Russell W., Hardy, Thomas B.

“…Previous methods for constructing univariate habitat suitability criteria (HSC) curves have ranged from professional judgement to kernel‐smoothed density…”
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Spatial sampling on streams: principles for inference on aquatic networks by Som, Nicholas A., Monestiez, Pascal, Ver Hoef, Jay M., Zimmerman, Dale L., Peterson, Erin E.

“…For ecological and environmental data, prior inquiries into spatial sampling designs have considered two‐dimensional domains and have shown that design…”
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Flow variation and substrate type affect dislodgement of the freshwater polychaete, Manayunkia speciosa by Malakauskas, David M., Willson, Sarah J., Wilzbach, Margaret A., Som, Nicholas A.

“…We quantified microscale flow forces and their ability to entrain the freshwater polychaete, Manayunkia speciosa, the intermediate host for 2 myxozoan…”
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Deconstructing dams and disease: predictions for salmon disease risk following Klamath River dam removals by Bartholomew, Jerri L., Alexander, Julie D., Alvarez, Justin, Atkinson, Stephen D., Belchik, Michael, Bjork, Sarah J., Foott, J. Scott, Gonyaw, Alex, Hereford, Mark E., Holt, Richard A., McCovey, Barry, Som, Nicholas A., Soto, Toz, Voss, Anne, Williams, Thomas H., Wise, Ted G., Hallett, Sascha L.

“…The health of fish populations and the river systems they inhabit have broad ecological, cultural, recreational, and economic relevance. This is exemplified by…”
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Comment on "Methods to account for spatial autocorrelation in the analysis of species distributional data: a review" by Betts, Matthew G., Ganio, Lisa M., Huso, Manuela M. P., Som, Nicholas A., Huettmann, Falk, Bowman, Jeff, Wintle, Brendan A.

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Using Cure Models for Analyzing the Influence of Pathogens on Salmon Survival by Ray, R. Adam, Perry, Russell W, Som, Nicholas A, Bartholomew, Jerri L

“…Parasites and pathogens influence the size and stability of wildlife populations, yet many population models ignore the population-level effects of pathogens…”
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Disease in Central Valley Salmon: Status and Lessons from Other Systems by Lehman, Brendan, Johnson, Rachel C., Adkison, Mark, Burgess, Oliver T., Connon, Richard E., Fangue, Nann A., Foott, J. Scott, Hallett, Sascha L., Martinez–López, Beatriz, Miller, Kristina M., Purcell, Maureen K., Som, Nicholas A., Valdes–Donoso, Pablo, Collins, Alison A.

“…hinook Salmon (Oncorhynchus tshawytscha) are increasingly vulnerable to anthropogenic activities and climate change, especially at their most southern range in…”
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Corrected prediction intervals for change detection in paired watershed studies by Som, Nicholas A, Zégre, Nicolas P, Ganio, Lisa M, Skaugset, Arne E

“…Hydrological data may be temporally autocorrelated requiring autoregressive process parameters to be estimated. Current statistical methods for hydrological…”
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Evaluating Alternative Hierarchical Modeling Approaches for the Estimation of Salmonid Smolt Abundance by Payton, Quinn, Som, Nicholas A.

“…Calibrated estimates of fisheries population abundance are vital in the development and appraisal of management actions. Capture–recapture (CR) experiments are…”
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Effects of 2 D hydrodynamic model resolution on habitat estimates for rearing Coho Salmon in contrasting channel forms by Smit, Reuben B., Goodman, Damon H., Boyce, Josh, Som, Nicholas A.

“…Estimating the impacts of water allocation decisions on fish populations and habitat availability is an important part of environmental flow assessments,…”
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A life cycle model for evaluating estuary residency and recovery potential in Chinook salmon by Chen, Emily K., Som, Nicholas A., Deibner-Hanson, John D., Anderson, David G., Henderson, Mark J.

“…Understanding the spatial and temporal habitat use of a population is a necessary step for recovery planning. For Chinook salmon (Oncorhynchus tshawytscha),…”
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