Publications
Below are publications associated with the Southwest Biological Science Center's research.
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Filter Total Items: 1538
Quantifying animal movement for caching foragers: the path identification index (PII) and cougars, Puma concolor Quantifying animal movement for caching foragers: the path identification index (PII) and cougars, Puma concolor
Relocation studies of animal movement have focused on directed versus area restricted movement, which rely on correlations between step-length and turn angles, along with a degree of stationarity through time to define behavioral states. Although these approaches may work well for grazing foraging strategies in a patchy landscape, species that do not spend a significant amount of time...
Authors
Kirsten E. Ironside, David J. Mattson, Tad Theimer, Brian Jansen, Brandon Holton, Terence R. Arundel, Michael Peters, Joseph O. Sexton, Thomas C. Edwards
Variability in eddy sandbar dynamics during two decades of controlled flooding of the Colorado River in the Grand Canyon Variability in eddy sandbar dynamics during two decades of controlled flooding of the Colorado River in the Grand Canyon
Sandbars are iconic features of the Colorado River in the Grand Canyon, Arizona, U.S.A. Following completion of Glen Canyon Dam in 1963, sediment deficit conditions caused erosion of eddy sandbars throughout much of the 360 km study reach downstream from the dam. Controlled floods in 1996, 2004, and 2008 demonstrated that sand on the channel bed could be redistributed to higher...
Authors
Erich R. Mueller, Paul E. Grams, Joseph E. Hazel, John C. Schmidt
Hatching success and predation of Bog Turtle (Glyptemys muhlenbergii) eggs in New Jersey and Pennsylvania Hatching success and predation of Bog Turtle (Glyptemys muhlenbergii) eggs in New Jersey and Pennsylvania
Nest-site selection by most turtles affects the survival of females and their offspring. Although bog turtles (Glyptemys muhlenbergii) do not typically leave their wetlands for nesting, nest-site selection can impact hatching success and hatchling survival. Between 1974 and 2012, we monitored the fates of 258 bog turtle eggs incubated in the field and 91 eggs incubated under laboratory...
Authors
Robert T. Zappalorti, Annalee M. Tutterow, Shannon E. Pittman, Jeffrey E. Lovich
Estimating disperser abundance using open population models that incorporate data from continuous detection PIT arrays Estimating disperser abundance using open population models that incorporate data from continuous detection PIT arrays
Autonomous passive integrated transponder (PIT) tag antenna systems continuously detect individually marked organisms at one or more fixed points over long time periods. Estimating abundance using data from autonomous antennae can be challenging, because these systems do not detect unmarked individuals. Here we pair PIT antennae data from a tributary with mark-recapture sampling data in...
Authors
Maria C. Dzul, Charles B. Yackulic, Josh Korman
Future soil moisture and temperature extremes imply expanding suitability for rainfed agriculture in temperate drylands Future soil moisture and temperature extremes imply expanding suitability for rainfed agriculture in temperate drylands
The distribution of rainfed agriculture is expected to respond to climate change and human population growth. However, conditions that support rainfed agriculture are driven by interactions among climate, including climate extremes, and soil moisture availability that have not been well defined. In the temperate regions that support much of the world’s agriculture, these interactions are
Authors
John B. Bradford, Daniel R. Schlaepfer, William K. Lauenroth, Charles B. Yackulic, Michael C. Duniway, Sonia A. Hall, Gensuo Jia, Khishigbayar Jamiyansharav, Seth M. Munson, Scott D. Wilson, Britta Tietjen
Riparian bird density decline in response to biocontrol of Tamarix from riparian ecosystems along the Dolores River in SW Colorado, USA Riparian bird density decline in response to biocontrol of Tamarix from riparian ecosystems along the Dolores River in SW Colorado, USA
Biocontrol of invasive tamarisk (Tamarix spp.) in the arid Southwest using the introduced tamarisk beetle (Diorhabda elongata) has been hypothesized to negatively affect some breeding bird species, but no studies to date have documented the effects of beetle-induced defoliation on riparian bird abundance. We assessed the effects of tamarisk defoliation by monitoring defoliation rates...
Authors
Abigail J. Darrah, Charles van Riper
Variation in annual clutch phenology of desert tortoises (Gopherus morafkai) in the Sonoran Desert of Arizona Variation in annual clutch phenology of desert tortoises (Gopherus morafkai) in the Sonoran Desert of Arizona
The phenology of egg production and oviposition in organisms affects survival and development of neonates and thus, both offspring and maternal fitness. In addition, in organisms with environmental sex determination, clutch phenology can affect hatchling sex ratios with attendant effects on population demography. The rapid rate of contemporary climate change might disrupt reproductive...
Authors
Jeffrey E. Lovich, Roy C. Averill-Murray, Mickey Agha, Joshua R. Ennen, Meaghan Austin
Biocrust ecology: Unifying micro- and macro-scales to confront global change Biocrust ecology: Unifying micro- and macro-scales to confront global change
Biological soil crusts (biocrusts) are communities of microbes, lichens and bryophytes living at the soil surface in drylands (Fig. 1; Belnap et al., 2016). Biocrusts occur on all continents and can comprise a majority of cover in some systems (Belnap et al., 2016). While species diversity and distributions have long been a research focus, interest in controls on community composition...
Authors
Scott Ferrenberg, Sasha C. Reed
Landscape-scale processes influence riparian plant composition along a regulated river Landscape-scale processes influence riparian plant composition along a regulated river
Hierarchical frameworks are useful constructs when exploring landscape- and local-scale factors affecting patterns of vegetation in riparian areas. In drylands, which have steep environmental gradients and high habitat heterogeneity, landscape-scale variables, such as climate, can change rapidly along a river's course, affecting the relative influence of environmental variables at...
Authors
Emily C. Palmquist, Barbara Ralston, David M. Merritt, Patrick B. Shafroth
A coupled metabolic-hydraulic model and calibration scheme for estimating of whole-river metabolism during dynamic flow conditions A coupled metabolic-hydraulic model and calibration scheme for estimating of whole-river metabolism during dynamic flow conditions
Conventional methods for estimating whole-stream metabolic rates from measured dissolved oxygen dynamics do not account for the variation in solute transport times created by dynamic flow conditions. Changes in flow at hourly time scales are common downstream of hydroelectric dams (i.e. hydropeaking), and hydrologic limitations of conventional metabolic models have resulted in a poor
Authors
Robert A. Payn, Robert O Hall, Theodore A. Kennedy, Geoff C Poole, Lucy A. Marshall
Building capacity in biodiversity monitoring at the global scale Building capacity in biodiversity monitoring at the global scale
Human-driven global change is causing ongoing declines in biodiversity worldwide. In order to address these declines, decision-makers need accurate assessments of the status of and pressures on biodiversity. However, these are heavily constrained by incomplete and uneven spatial, temporal and taxonomic coverage. For instance, data from regions such as Europe and North America are...
Authors
Dirk S. Schmeller, Monika Böhm, Christos Arvanitidis, Shannon Barber-Meyer, Neil Brummitt, Mark Chandler, Eva Chatzinikolaou, Mark John Costello, Hui Ding, Jaime Garcia-Moreno, Michael J. Gill, Peter Haase, Miranda Jones, Romain Juillard, William E. Magnusson, Corinne S. Martin, Melodie A. McGeoch, Jean-Baptiste Mihoub, Nathalie Pettorelli, Vânia Proença, Cui Peng, Eugenie Regan, Ute Schmiedel, John P. Simsika, Lauren Weatherdon, Carly Waterman, Haigen Xu, Jayne Belnap
Short-term and long-term evapotranspiration rates at ecological restoration sites along a large river receiving rare flow events Short-term and long-term evapotranspiration rates at ecological restoration sites along a large river receiving rare flow events
Many large rivers around the world no longer flow to their deltas, due to ever greater water withdrawals and diversions for human needs. However, the importance of riparian ecosystems is drawing increasing recognition, leading to the allocation of environmental flows to restore river processes. Accurate estimates of riparian plant evapotranspiration (ET) are needed to understand how the...
Authors
Margaret Shanafield, Hugo Gutierrez Jurado, Jesus Eliana Rodriguez Burgueno, Jorge Ramirez Hernandez, Christopher Jarchow, Pamela L. Nagler