Publications
Below are publications associated with the Southwest Biological Science Center's research.
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Filter Total Items: 1328
The influence of drying on the aeolian transport of river-sourced sand
Transgression and regression of water levels (stages) have impacted the evolution of aeolian landforms and sedimentary deposits throughout geologic history. We studied this phenomenon over a five-day period of reduced flow on the Colorado River in Grand Canyon National Park, AZ, USA, in March 2021. These transient low flows exposed river-channel sand deposits to the air, causing progressive desicc
Authors
Joel B. Sankey, Joshua Caster, Alan Kasprak, Helen C. Fairley
Impeding access to tributary spawning habitat and releasing experimental fall-timed floods increases brown trout immigration into a dam's tailwater
River ecosystems have been altered by flow regulation and species introductions. Regulated flow regimes often include releases designed to benefit certain species or restore ecosystem processes, and invasive species suppression programs may include efforts to restrict access to spawning habitat. The impacts of these management interventions are often uncertain. Here, we assess hypotheses regarding
Authors
Brian D. Healy, Charles Yackulic, Robert C. Schelly
Grazing and ecosystem service delivery in global drylands
Grazing represents the most extensive use of land worldwide. Yet its impacts on ecosystem services remain uncertain because pervasive interactions between grazing pressure, climate, soil properties, and biodiversity may occur but have never been addressed simultaneously. Using a standardized survey at 98 sites across six continents, we show that interactions between grazing pressure, climate, soil
Authors
Fernando T. Maestre, Yoann Le Bagousse-Pinguet, Manuel Delgado-Baquerizo, David J. Eldridge, Hugo Saiz, Miguel Berdugo, Beatriz Gozalo, Victoria Ochoa, Emilio Guirado, Miguel García-Gómez, Enrique Valencia, Juan J. Gaitán, Sergio Asensio, Betty J. Mendoza, César Plaza, Paloma Díaz-Martínez, Ana Rey, Hang-Wei Hu, Ji-Zheng He, Jun-Tao Wang, Anika Lehmann, Matthias C. Rillig, Simone Cesarz, Nico Eisenhauer, Jaime Martínez-Valderrama, Eduardo Moreno-Jiménez, Osvaldo E. Sala, Mehdi Abedi, Negar Ahmadian, Concepción L. Alados, Valeria Aramayo, Fateh Amghar, Tulio Arredondo, Rodrigo J. Ahumada, Khadijeh Bahalkeh, Farah Ben Salem, Niels Blaum, Bazartseren Boldgiv, Matthew A. Bowker, Donaldo Bran, Chongfeng Bu, Rafaella Canessa, Andrea P. Castillo-Monroy, Helena Castro, Ignacio Castro, Patricio Castro-Quezada, Roukaya Chibani, Abel A. Conceição, Courtney M. Currier, Anthony Darrouzet-Nardi, Balázs Deák, David A. Donoso, Andrew J. Dougill, Jorge Durán, Batdelger Erdenetsetseg, Carlos I. Espinosa, Alex Fajardo, Mohammad Farzam, Daniela Ferrante, Anke S. K. Frank, Lauchlan H. Fraser, Laureano A. Gherardi, Aaron C. Greenville, Carlos A. Guerra, Elizabeth Gusmán-Montalvan, Rosa M. Hernández-Hernández, Norbert Hölzel, Elisabeth Huber-Sannwald, Frederic M. Hughes, Oswaldo Jadán-Maza, Florian Jeltsch, Anke Jentsch, Kudzai F. Kaseke, Melanie Köbel, Jessica E. Koopman, Cintia V. Leder, Anja Linstädter, Peter C. le Roux, Xinkai Li, Pierre Liancourt, Jushan Liu, Michelle A. Louw, Gillian Maggs-Kölling, Thulani P. Makhalanyane, Oumarou Malam Issa, Antonio J. Manzaneda, Eugene Marais, Juan P. Mora, Gerardo Moreno, Seth M. Munson, Alice Nunes, Gabriel Oliva, Gastón R. Oñatibia, Guadalupe Peter, Marco O. D. Pivari, Yolanda Pueyo, R. Emiliano Quiroga, Soroor Rahmanian, Sasha C. Reed, Pedro J. Rey, Benoit Richard, Alexandra Rodríguez, Víctor Rolo, Juan G. Rubalcaba, Jan C. Puppert, Ayman Salah, Max A. Schuchardt, Sedona Spann, Ilan Stavi, Colton R. A. Stephens, Anthony M. Swemmer, Alberto L. Teixido, Andrew D. Thomas, Heather L. Throop, Katja Tielbörger, Samantha K. Travers, James Val, Orsolya Valkó, Liesbeth van den Brink, Sergio Velasco Ayuso, Frederike Velbert, Wanyoike Wamiti, Deli Wang, Lixin Wang, Glenda M. Wardle, Laura Yahdjian, Eli Zaady, Yuanming Zhang, Xiaobing Zhou, Brajesh K. Singh, Nicolas Gross
A review of current capabilities and science gaps in water supply data, modeling, and trends for water availability assessments in the Upper Colorado River Basin
The Colorado River is a critical water resource in the southwestern United States, supplying drinking water for 40 million people in the region and water for irrigation of 2.2 million hectares of land. Extended drought in the Upper Colorado River Basin (UCOL) and the prospect of a warmer climate in the future pose water availability challenges for those charged with managing the river. Limited wat
Authors
Fred D. Tillman, Natalie K. Day, Matthew P. Miller, Olivia L. Miller, Christine Rumsey, Daniel Wise, Patrick Cullen Longley, Morgan C. McDonnell
Exploring the role of cryptic nitrogen fixers in terrestrial ecosystems: A frontier in nitrogen cycling research
Biological nitrogen fixation represents the largest natural flux of new nitrogen (N) into terrestrial ecosystems, providing a critical N source to support net primary productivity of both natural and agricultural systems. When they are common, symbiotic associations between plants and bacteria can add more than 100 kg N ha−1 y−1 to ecosystems. Yet, these associations are uncommon in many terrestri
Authors
Cory Cleveland, Carla R. G. Reis, Steven Perakis, Katherine A Dynarski, Sarah Batterman, Timothy Crews, Maga Gei, Michael Gundale, Duncan Menge, Mark Peoples, Sasha C. Reed, Verity Salmon, Fiona M. Soper, Benton Taylor, Monica Turner, Nina Wurzburger
Spatial and temporal patterns in Arctic mosquito abundance
Organisms that undergo a shift in ontogeny and habitat type often change their spatial distribution throughout their life cycle, but how this affects population dynamics remains poorly understood.We examined spatial and temporal patterns in Aedes nigripes abundance, a widespread univoltine Arctic mosquito species (Diptera: Culicidae), hypothesizing that the spatial distribution of adults would be
Authors
Melissa H DeSiervo, Rebecca A Finger-Higgens, Matthew P. Ayres, Ross A Virginia, Lauren E Culler
Ecologically relevant moisture and temperature metrics for assessing dryland ecosystem dynamics
In drylands, water-limited regions that cover ~40% of the global land surface, ecosystems are primarily controlled by access to soil moisture and exposure to simultaneously hot and dry conditions. Quantifying ecologically relevant environmental metrics is difficult in drylands because the response of vegetation to moisture and temperature conditions is not easily explained solely by climate-based
Authors
D. A. Chenoweth, Daniel Rodolphe Schlaepfer, J. C. Chambers, J. L. Brown, A. K. Urza, Brice Hanberry, D. Board, M. Crist, John B. Bradford
Geologic, geomorphic, and edaphic underpinnings of dryland ecosystems: Colorado Plateau landscapes in a changing world
Drylands represent more than 41% of the global land surface and are at degradation risk due to land use and climate change. Developing strategies to mitigate degradation and restore drylands in the face of these threats requires an understanding of how drylands are shaped by not only soils and climate, but also geology and geomorphology. However, few studies have completed such a comprehensive ana
Authors
Michael C. Duniway, Christopher Benson, Travis W. Nauman, Anna C Knight, John B. Bradford, Seth M. Munson, Dana L. Witwicki, Carolyn Livensperger, Matthew W. Van Scoyoc, Terry T Fisk, David Thoma, Mark E. Miller
Drought related changes in water quality surpass effects of experimental flows on trout growth downstream of Lake Powell reservoir
Flows released from reservoirs are often modified to mitigate the negative ecosystem effects of dams. We estimated the effects of two experimental flows, fall-timed floods and elimination of sub-daily variation in flows on weekends, on growth rates of rainbow trout (Oncorhynchus mykiss) in the Colorado River downstream from Glen Canyon Dam. Experimental flow effects were compared to effects of wat
Authors
Josh Korman, Bridget Deemer, Charles Yackulic, Theodore Kennedy, Mariah Aurelia Giardina
Mapping 2-D bedload rates throughout a sand-bed river reach from high-resolution acoustical surveys of migrating bedforms
This paper introduces a method for determining spatially-distributed, 2-D bedload rates using repeat, high-resolution surveys of the bed topography. As opposed to existing methods, bedform parameters and bedload rates are computed from bed elevation profiles interpolated along the local bedform velocities. The bedform velocity fields are computed applying Large-Scale Particle Image Velocimetry, in
Authors
Jérôme Le Coz, Emeline Perret, Benoît Camenen, David Topping, Daniel D. Buscombe, Kate C.P. Leary, Guillaume Dramais, Paul Grams
The hydroclimate niche: A tool for predicting and managing riparian plant community responses to streamflow seasonality
Habitat suitability is a consequence of interacting environmental factors. In riparian ecosystems, suitable plant habitat is influenced by interactions between stream hydrology and climate, hereafter referred to as “hydroclimate”. We tested the hypothesis that hydroclimate variables would improve the fit of ecological niche models for a suite of riparian species using occurrence data from the west
Authors
Bradley J. Butterfield, Emily C. Palmquist, Charles Yackulic
Patterns and controls of foliar nutrient stoichiometry and flexibility across United States forests
Plant element stoichiometry and stoichiometric flexibility strongly regulate ecosystem responses to global change. Here, we tested three potential mechanistic drivers (climate, soil nutrients, and plant taxonomy) of both using paired foliar and soil nutrient data from terrestrial forested National Ecological Observatory Network sites across the USA. We found that broad patterns of foliar nitrogen
Authors
Katherine A Kynarski, Fiona M. Soper, Sasha C. Reed, William R Wieder, Cory C Cleveland