Publications
Filter Total Items: 168
Analyzing high resolution topography for advancing the understanding of mass and energy transfer through landscapes: A review
The study of mass and energy transfer across landscapes has recently evolved to comprehensive considerations acknowledging the role of biota and humans as geomorphic agents, as well as the importance of small-scale landscape features. A contributing and supporting factor to this evolution is the emergence over the last two decades of technologies able to acquire high resolution...
Authors
Paola Passaiacquaa, Patrick Belmont, Dennis M. Staley, Jeffrey D. Simley, J. Ramon Arrowsmith, Collin A. Bode, Christopher J. Crosby, Stephen B. DeLong, Nancy F. Glenn, Sara Kelly, Dimitri Lague, Harish Sangireddy, Keelin R. Schaffrath, David G. Tarboton, Thad A. Wasklewicz, Joseph M. Wheaton
Sharp increase in central Oklahoma seismicity 2009-2014 induced by massive wastewater injection
Unconventional oil and gas production provides a rapidly growing energy source; however high-producing states in the United States, such as Oklahoma, face sharply rising numbers of earthquakes. Subsurface pressure data required to unequivocally link earthquakes to injection are rarely accessible. Here we use seismicity and hydrogeological models to show that distant fluid migration from...
Authors
Kathleen M. Keranen, Geoffrey A. Abers, Matthew Weingarten, Barbara A. Bekins, Shemin Ge
Fitness in animals correlates with proximity to discontinuities in body mass distributions.
Discontinuous structure in landscapes may cause discontinuous, aggregated species body-mass patterns, reflecting the scales of structure available to animal communities within a landscape. Empirical analyses have shown that the location of species within body mass aggregations, which reflect this scale-specific organization, is non-random with regard to several ecological phenomena...
Authors
David G. Angeler, Craig Allen, Anna Vila-Gispert, David Almeida
Crustal permeability: Introduction to the special issue
The topic of crustal permeability is of broad interest in light of the controlling effect of permeability on diverse geologic processes and also timely in light of the practical challenges associated with emerging technologies such as hydraulic fracturing for oil and gas production (‘fracking’), enhanced geothermal systems, and geologic carbon sequestration. This special issue of...
Authors
Steven E. Ingebritsen, Tom Gleeson
Relationships between annual plant productivity, nitrogen deposition and fire size in low-elevation California desert scrub
Although precipitation is correlated with fire size in desert ecosystems and is typically used as an indirect surrogate for fine fuel load, a direct link between fine fuel biomass and fire size has not been established. In addition, nitrogen (N) deposition can affect fire risk through its fertilisation effect on fine fuel production. In this study, we examine the relationships between...
Authors
Leela E. Rao, John R. Matchett, Matthew Brooks, Robert Johns, Richard A. Minnich, Edith B. Allen
Seasonal weather patterns drive population vital rates and persistence in a stream fish
Climate change affects seasonal weather patterns, but little is known about the relative importance of seasonal weather patterns on animal population vital rates. Even when such information exists, data are typically only available from intensive fieldwork (e.g., mark–recapture studies) at a limited spatial extent. Here, we investigated effects of seasonal air temperature and...
Authors
Yoichiro Kanno, Benjamin Letcher, Nathaniel P. Hitt, David A. Boughton, John E.B. Wofford, Elise Zipkin
Habitat structure and body size distributions: Cross-ecosystem comparison for taxa with determinate and indeterminate growth
Habitat structure across multiple spatial and temporal scales has been proposed as a key driver of body size distributions for associated communities. Thus, understanding the relationship between habitat and body size is fundamental to developing predictions regarding the influence of habitat change on animal communities. Much of the work assessing the relationship between habitat...
Authors
Kirsty L. Nash, Craig Allen, Chris Barichievy, Magnus Nystrom, Shana M. Sundstrom, Nicholas E. Graham
Replacement cost valuation of Northern Pintail (Anas acuta) subsistence harvest in Arctic and sub-Arctic North America
Migratory species provide economically beneficial ecosystem services to people throughout their range, yet often, information is lacking about the magnitude and spatial distribution of these benefits at regional scales. We conducted a case study for Northern Pintails (hereafter pintail) in which we quantified regional and sub-regional economic values of subsistence harvest to indigenous...
Authors
Joshua H. Goldstein, Wayne E. Thogmartin, Kenneth J. Bagstad, James A. Dubovsky, Brady J. Mattsson, Darius J. Semmens, Laura López-Hoffman, James Diffendorfer
Spatial variability in survival of adult brook trout within two intensively surveyed headwater stream networks
Headwater stream networks are considered heterogeneous riverscapes, but it is challenging to characterize spatial variability in demographic rates. We estimated site-scale (50 m) survival of adult (>age 1+) brook trout (Salvelinus fontinalis) within two intensively surveyed headwater stream networks by applying an open-population N-mixture approach to count data collected over two...
Authors
Yoichiro Kanno, Benjamin Letcher, Jason C. Vokoun, Elise Zipkin
Rate of tree carbon accumulation increases continuously with tree size
Forests are major components of the global carbon cycle, providing substantial feedback to atmospheric greenhouse gas concentrations. Our ability to understand and predict changes in the forest carbon cycle—particularly net primary productivity and carbon storage - increasingly relies on models that represent biological processes across several scales of biological organization, from...
Authors
N.L. Stephenson, A.J. Das, R. Condit, S.E. Russo, P.J. Baker, N.G. Beckman, D.A. Coomes, E.R. Lines, W.K. Morris, Nadja Ruger, E. Álvarez, C. Blundo, Sarayudh Bunyavejchewin, George B. Chuyong, S.J. Davies, Á. Duque, C.N. Ewango, O. Flores, J.F. Franklin, H.R. Grau, Z. Hao, M. E. Harmon, S.P. Hubbell, David Kenfack, Y. Lin, J.-R. Makana, A. Malizia, L.R. Malizia, R.J. Pabst, N. Pongpattananurak, S.-H. Su, I-F. Sun, S. Tan, D. M. Thomas, P. J. van Mantgem, X. Wang, S.K. Wiser, M.A. Zavala
Market forces and technological substitutes cause fluctuations in the value of bat pest-control services for cotton
Critics of the market-based, ecosystem services approach to biodiversity conservation worry that volatile market conditions and technological substitutes will diminish the value of ecosystem services and obviate the “economic benefits” arguments for conservation. To explore the effects of market forces and substitutes on service values, we assessed how the value of the pest-control...
Authors
Laura López-Hoffman, Ruscena Wiederholt, Chris Sansone, Kenneth J. Bagstad, Paul M. Cryan, James Diffendorfer, Joshua H. Goldstein, Kelsie LaSharr, John H. Loomis, Gary F. McCracken, Rodrigo A. Medellín, Amy M. Russell, Darius J. Semmens
Inferences about population dynamics from count data using multi-state models: A comparison to capture-recapture approaches
Wildlife populations consist of individuals that contribute disproportionately to growth and viability. Understanding a population's spatial and temporal dynamics requires estimates of abundance and demographic rates that account for this heterogeneity. Estimating these quantities can be difficult, requiring years of intensive data collection. Often, this is accomplished through the...
Authors
Evan H. Campbell Grant, Elise Zipkin, Sillett T. Scott, Richard B. Chandler, Andy Royle