Forest and Rangeland Ecosystem Science Center (FRESC)

Publications

Filter Total Items: 1,510
Year Published: 2018

Molybdenum isotope fractionation during adsorption to organic matter

Organic matter is of emerging interest as a control on molybdenum (Mo) biogeochemistry, and information on isotope fractionation during adsorption to organic matter can improve interpretations of Mo isotope variations in natural settings. Molybdenum isotope fractionation was investigated during adsorption onto insolubilized humic acid (IHA), a...

King, Elizabeth K.; Perakis, Steven; Pett-Ridge, Julie C.
King, E.K., Perakis, S.S., Pett-Ridge, J.C., 2017, Molybdenum isotope fractionation during adsorption to organic matter: Geochimica et Cosmochimica Acta, v. 222, p. 584–598, https://doi.org/10.1016/j.gca.2017.11.014.

Year Published: 2018

Evaluating trade-offs in bull trout reintroduction strategies using structured decision making

Structured decision making allows reintroduction decisions to be made despite uncertainty by linking reintroduction goals with alternative management actions through predictive models of ecological processes. We developed a decision model to evaluate the trade-offs between six bull trout (Salvelinus confluentus) reintroduction decisions with the...

Brignon, William R.; Peterson, James; Dunham, Jason B.; Schaller, Howard A.; Schreck, Carl B.
Brignon, W. R., Peterson, J. T., Dunham, J. B., Schaller, H. A., & Schreck, C. B. (2017). Evaluating Tradeoffs in Bull Trout Reintroduction Strategies Using Structured Decision Making. Canadian Journal of Fisheries and Aquatic Sciences.

Year Published: 2018

Lack of observed movement response to lead exposure of California condors

Lead poisoning is an important conservation concern for wildlife, and scavenging birds are especially at risk from consumption of carcasses of animals killed with lead ammunition. Because current methods to identify lead exposure require animal capture and blood collection, management would benefit from the development of a less costly and...

Poessel, Sharon; Brandt, Joseph; Uyeda, Linda; Astell, Molly; Katzner, Todd E.
Poessel, S.A., Brandt, J., Uyeda, L., Astell, M., Katzner, T.E., 2017, Lack of observed movement response to lead exposure of California condors: Journal of Wildlife Management, p. online, https://doi.org/10.1002/jwmg.21378.

Year Published: 2018

Longitudinal thermal heterogeneity in rivers and refugia for coldwater species: Effects of scale and climate change

Climate-change driven increases in water temperature pose challenges for aquatic organisms. Predictions of impacts typically do not account for fine-grained spatiotemporal thermal patterns in rivers. Patches of cooler water could serve as refuges for anadromous species like salmon that migrate during summer. We used high-resolution remotely sensed...

Fullerton, A.H.; Torgersen, Christian E.; Lawer, J.J.; Steel, E. A.; Ebersole, J.L.; Lee, S.Y.
Fullerton, A.H., Torgersen, C.E., Lawler, J.J., Steel, E.A., Ebersole, J.L., Lee, S.Y., 2018, Longitudinal thermal heterogeneity in rivers and refugia for coldwater species- effects of scale and climate change: Aquatic Sciences, p. online, https://doi.org/10.1007/s00027-017-0557-9.

Year Published: 2018

Estimating vegetation biomass and cover across large plots in shrub and grass dominated drylands using terrestrial lidar and machine learning

Terrestrial laser scanning (TLS) has been shown to enable an efficient, precise, and non-destructive inventory of vegetation structure at ranges up to hundreds of meters. We developed a method that leverages TLS collections with machine learning techniques to model and map canopy cover and biomass of several classes of short-stature vegetation...

Anderson, Kyle E.; Glenn, Nancy F.; Spaete, Lucas P.; Shinneman, Douglas; Pilliod, David S.; Arkle, Robert; McIlroy, Susan; Derryberry, DeWayne R.
Anderson, K.E., Glenn, N.F., Spaete, L.P., Shinneman, D.J., Pilliod, D.S., Arkle, R.S., McIlroy, S.K., Derryberry, D.R., 2018, Estimating vegetation biomass and cover across large plots in shrub and grass dominated drylands using terrestrial lidar and machine learning: Ecological Indicators, v. 84, p. 793-802, https://doi.org/10.1016/j.ecolind.2017.09.034

Year Published: 2018

Meteorological and environmental variables affect flight behaviour and decision-making of an obligate soaring bird, the California Condor Gymnogyps californianus

The movements of animals are limited by evolutionary constraints and ecological processes and are strongly influenced by the medium through which they travel. For flying animals, variation in atmospheric conditions is critically influential in movement. Obligate soaring birds depend on external sources of updraft more than do other flying species...

Poessel, Sharon; Brandt, Joseph; Miller, Tricia A.; Katzner, Todd E.
Poessel, S.A., Brandt, J., Miller, T.A., Katzner, T.E., 2017, Meteorological and environmental variables affect flight behaviour and decision-making of an obligate soaring bird, the California Condor Gymnogyps californianus: Ibis, p. online, https://doi.org/10.1111/ibi.12531.

Year Published: 2018

Long-term trends in restoration and associated land treatments in the southwestern United States

Restoration treatments, such as revegetation with seeding or invasive species removal, have been applied on U.S. public lands for decades. Temporal trends in these management actions have not been extensively summarized previously, particularly in the southwestern United States where invasive plant species, drought, and fire have altered dryland...

Copeland, Stella M.; Munson, Seth M.; Pilliod, David S.; Welty, Justin L.; Bradford, John B.; Butterfield, Bradley J.
Copeland, S.M., Munson, S.M., Pilliod, D.S., Welty, J.L., Bradford, J.B., and Butterfield, B.J., 2017, Long-term trends in restoration and associated land treatments in the southwestern United States: Restoration Ecology, v. (online), http://dx.doi.org/10.1111/rec.12574.

Year Published: 2018

Spectrophotometry of Artemisia tridentata to quantitatively determine subspecies

Ecological restoration is predicated on our abilities to discern plant taxa. Taxonomic identification is a first step in ensuring that plants are appropriately adapted to the site. An example of the need to identify taxonomic differences comes from big sagebrush (Artemisia tridentata). This species is composed of three predominant subspecies...

Richardson, Bryce; Boyd, Alicia; Tobiasson, Tanner; Germino, Matthew J.
Richardson, B., Boyd, A.A., Tobaisson, T., Germino, M.J., 2017, Spectrophotometry of Artemisia tridentata to qualitatively determine subspecies: Rangeland Ecology and Management, p. online, https://doi.org/10.1016/j.rama.2017.07.004.

Year Published: 2018

Weather-centric rangeland revegetation planning

Invasive annual weeds negatively impact ecosystem services and pose a major conservation threat on semiarid rangelands throughout the western United States. Rehabilitation of these rangelands is challenging due to interannual climate and subseasonal weather variability that impacts seed germination, seedling survival and establishment, annual weed...

Hardegree, Stuart P.; Abatzoglou, John T.; Brunson, Mark W.; Germino, Matthew J.; Hegewisch, Katherine C.; Moffet, Corey A.; Pilliod, David S.; Roundy, Bruce A.; Boehm, Alex R.; Meredith, Gwendwr R.
Hardegree, S.P., Abatzoglou, J.T., Brunson, M., Germino, M.J., Hegewisch, K.C., Moffet, C.A., Pilliod, D.S., Roundy, B.A., Boehm, A.R., Meredith, G.R., 2017, Weather-centric rangeland revegetation planning: Rangeland Ecology and Management, p. online, https://doi.org/10.1016/j.rama.2017.07.003.

Year Published: 2018

Seed origin and warming constrain lodgepole pine recruitment, slowing the pace of population range shifts

Understanding how climate warming will affect the demographic rates of different ecotypes is critical to predicting shifts in species distributions. Here we present results from a common garden, climate change experiment in which we measured seedling recruitment of lodgepole pine, a widespread North American conifer that is also planted globally....

Conlisk, Erin; Castanha, Cristina; Germino, Matthew J.; Veblen, Thomas T.; Smith, Jeremy M.; Moyes, Andrew B.; Kueppers, Lara M.
Conlisk, E., Castanha, C., Germino, M.J., Veblen, T.T., Smith, J.M., Kueppers, L.M., 2017, Seed origin and warming constrain lodgepole pine recruitment, slowing the pace of population range shifts: Global Change Biology, p. online, https://doi.org/10.1111/gcb.13840.

Year Published: 2018

Growth strategies and threshold responses to water deficit modulate effects of warming on tree seedlings from forest to alpine

1.Predictions of upslope range shifts for tree species with warming are based on assumptions of moisture stress at lower elevation limits and low temperature stress at high elevation limits. However, recent studies have shown that warming can reduce tree seedling establishment across the entire gradient from subalpine forest to alpine via moisture...

Lazarus, Brynne E.; Castanha, Cristina; Germino, Matthew J.; Kueppers, Lara M.; Moyes, Andrew B.
Lazarus, B. E., Castanha, C., Germino, M. J., Kueppers, L. M. and Moyes, A. B. (), Growth strategies and threshold responses to water deficit modulate effects of warming on tree seedlings from forest to alpine. J Ecol. Accepted Author Manuscript. doi:10.1111/1365-2745.12837

Year Published: 2018

Bioenergetic evaluation of diel vertical migration by bull trout (Salvelinus confluentus) in a thermally stratified reservoir

Many species living in deeper lentic ecosystems exhibit daily movements that cycle through the water column, generally referred to as diel vertical migration (DVM). In this study, we applied bioenergetics modelling to evaluate growth as a hypothesis to explain DVM by bull trout (Salvelinus confluentus) in a thermally stratified reservoir (Ross...

Eckmann, Madeleine; Dunham, Jason B.; Connor, Edward J.; Welch, Carmen A.
Eckmann, M., Dunham, J.B., Connor, E.J., Welch, C.A., 2016, Bioenergetic evaluation of diel vertical migration by bull trout (Salvelinus confluentus) in a thermally stratified reservoir: Ecology of Freshwater Fish, p. online, http://dx.doi.org/10.1111/eff.12321.