Evidence of extensive home range sharing among mother–daughter bobcat pairs in the wildland–urban interface of the Tucson Mountains
Natalie Payne, Desiree Andersen, Robert A. Davis, Cheryl Mollohan, Kerry Baldwin, Albert L. LeCount, Melanie Culver
2025, Journal of Heredity (116) 408-421
Urbanization impacts the structure and viability of wildlife populations. Some habitat generalists, such as bobcats (Lynx rufus), maintain populations at the intersection of wild and urban habitats (wildland urban interface, WUI), but impacts of urbanization on bobcat social structure are not well understood. Although commonly thought to establish exclusive home...
Food-web dynamics of a floodplain mosaic overshadow the effects of engineered logjams for Pacific salmon and steelhead
James C. Paris, Colden V. Baxter, James R Bellmore, Joseph R. Benjamin
2025, Ecological Applications (35)
Food webs vary in space and time. The structure and spatial arrangement of food webs are theorized to mediate temporal dynamics of energy flow, but empirical corroboration in intermediate-scale landscapes is scarce. River-floodplain landscapes encompass a mosaic of aquatic habitat patches and food webs, supporting a variety of aquatic consumers...
Physical habitat is more than a sediment issue: A multi-dimensional habitat assessment indicates new approaches for river management
Matthew J. Cashman, Gina Lee, Leah Ellen Staub, Michelle P. Katoski, Kelly O. Maloney
2025, Journal of Environmental Management (371)
Degraded physical habitat is a common stressor affecting river ecosystems and typically addressed in the United States (US) through a regulatory focus on sediment. However, a narrow regulatory focus on sediment may overlook other aspects of physical habitat and the processes for its creation, maintenance, and degradation. In addition, there...
Declining ecological resilience and invasion resistance under climate change in the sagebrush region, United States
Daniel Rodolphe Schlaepfer, Jeanne C. Chambers, Alexandra K. Urza, Brice B. Hanberry, Jessi L. Brown, David I. Board, Steven B. Campbell, Karen J. Clause, Michele R. Crist, John B. Bradford
2025, Ecological Applications (35)
In water-limited dryland ecosystems of the Western United States, climate change is intensifying the impacts of heat, drought, and wildfire. Disturbances often lead to increased abundance of invasive species, in part, because dryland restoration and rehabilitation are inhibited by limited moisture and infrequent plant recruitment events. Information on ecological resilience...
Timing and geometry of the Chemehuevi Formation reveal a late Pleistocene sediment pulse into the Lower Colorado River
Harrison J. Gray, Kyle House, Adam M. Hudson, Jorge A. Vazquez, Ryan S. Crow, Miriam Primus, Shannon A. Mahan, Tammy M. Rittenour, Keith A. Howard
2025, GSA Bulletin (137) 1582-1606
The Chemehuevi Formation is a distinctive 50−150-m-thick wedge-shaped Pleistocene sedimentary unit deposited by the Colorado River. It lines the perimeters of the river’s floodplains and bedrock canyons for more than 600 km between the mouth of the Grand Canyon and the delta region in the Gulf of California. The formation...
Mangrove freeze resistance and resilience across a tropical-temperate transitional zone
Yiyang Kang, David A. Kaplan, Michael Osland
2025, Journal of Ecology (113) 94-111
Freeze events govern the distribution and structure of mangrove ecosystems, especially in tropical-temperate transitional zones. Understanding mangrove responses to freezing is crucial for predicting their poleward expansion under climate change. However, there is a need for field-based measurements of mangrove freeze resistance and resilience.After an extreme winter storm in...
Comparative behavioral responses of grass carp (Ctenopharyngodon idella), bighead carp (Hypophthalmichthys nobilis), and silver carp (H. molitrix) to free amino acids in water
Mark L. Wildhaber, Zachary D Beaman, Karlie K Ditter, Benjamin M West
2025, Journal of Fish Biology (106) 481-491
Control and elimination of invasive fishes, like carps (Order Cypriniformes), may be possible by using chemical stimuli to congregate them for removal. To this end, we tested behavioral responses of grass (Ctenopharyngodon idella), bighead (Hypophthalmichthys nobilis), and silver carp (H. molitrix) to L-alanine, L-arginine, L-glutamic acid, and L-aspartic acid. In...
Macroinvertebrate community responses to disturbance in a fragmented river with contrasting legacies of alteration
Karen A. Baumann, Eric Arthur Scholl, Heidi M. Rantala, Matt R. Whiles
2025, River Research and Applications (41) 638-651
Flow is a critical factor determining the riverine ecosystem structure and function. Widespread hydrologic alteration, however, has impacted the ecological integrity of rivers in ways that are not well understood, including responses of biological communities to increasingly frequent and severe climatic disturbances. Our study...
Quantitative support for the benefits of proactive management for wildlife disease control
Molly Bletz, Evan H. Campbell Grant, Graziella Vittoria DiRenzo
2025, Conservation Biology (39)
Finding effective pathogen mitigation strategies is one of the biggest challenges humans face today. In the context of wildlife, emerging infectious diseases have repeatedly caused widespread host morbidity and population declines of numerous taxa. In areas yet unaffected by a pathogen, a proactive management approach has the potential to minimize...
Inconsistent transcriptomic responses to hexabromocyclododecane in Japanese quail: A comparative analysis of results from four different study designs
Paul Béziers, Elena Legrand, Emily Boulanger, Niladri Basu, Jessica Ewald, Paula F. P. Henry, Marcus Hecker, Jianguo Xia, Natalie Karouna-Renier, Doug Crump, Jessica A. Head
2025, Environmental Toxicology and Chemistry (44) 2524-2534
Efforts to use transcriptomics for toxicity testing have classically relied on the assumption that chemicals consistently produce characteristic transcriptomic signatures that are reflective of their mechanism of action. However, the degree to which transcriptomic responses are conserved across different test methodologies has seldom been explored. With increasing regulatory demand for...
Comparing the efficacy of two immobilization drug combinations for the chemical restraint of bobcats (Lynx rufus)
Christopher N. Jacques, Robert W. Klaver, Christopher S. DePerno, Aimee P. Rockhill
2025, Journal of Wildlife Diseases (60) 86-94
Chemical immobilization agents that provide rapid induction time, short duration of action, wide margin of safety, and postreversal recovery are important attributes to the handling process of immobilized animals. We evaluated differences in induction, recovery, and physiologic parameters in 23 (13 female, nine adults and four yearlings; 10 male, nine...
Haploid gynogens facilitate disomic marker development in paleotetraploid sturgeons
Richard Flamio Jr., Dominic G Swift, David S Portnoy, Kimberly Chojnacki, Aaron J. DeLonay, Jeffrey Powell, Patrick Braaten, Edward J. Heist
2025, Molecular Ecology Resources (25)
Acipenseriformes (sturgeons and paddlefishes) are of substantial conservation concern, and development of genomic resources for these species is difficult due to past whole genome duplication. Development of disomic markers for polyploid organisms can be challenging due to difficulty in resolving alleles at a single locus from...
Strontium isotopes reveal diverse life history variations, migration patterns, and habitat use for Broad Whitefish (Coregonus nasus) in Arctic, Alaska
Jason C. Leppi, Daniel J. Rinella, Mark S. Wipfli, Randy J. Brown, Karen J. Spaleta, Matthew S. Whitman
2025, PLoS ONE (17)
Conservation of Arctic fish species is challenging partly due to our limited ability to track fish through time and space, which constrains our understanding of life history diversity and lifelong habitat use. Broad Whitefish (Coregonus nasus) is an important subsistence species for Alaska’s Arctic Indigenous communities, yet little is known...
Habitat management for stopover and breeding songbird communities along rights-of-way in forest-dominated landscapes
Eric L. Margenau, Petra B. Wood, Christopher T. Rota
2025, Ecological Applications (32)
The proliferation of energy rights-of-way (pipelines and powerlines; ROWs) in the central Appalachian region has prompted wildlife management agencies to consider ways to use these features to manage and conserve at-risk songbird species. However, little empirical evidence exists regarding best management strategies to enhance habitat surrounding ROWs for the songbird...
What have we lost? Modeling dam impacts on American shad populations through their native range
Joseph D. Zydlewski, Daniel S. Stich, Samuel G. Roy, Michael M. Bailey, Timothy F Sheehan, Kenneth Sprankle
2025, Frontiers in Marine Science (8)
American shad (Alosa sapidissima) are native to the east coast of North America from the St. Johns River, Florida, to the St. Lawrence River region in Canada. Since the 1800s, dams have reduced access to spawning habitat. To assess the impact of dams, we estimated the historically accessed spawning habitat...
Thicknesses of lava flows in satellite images: Comparison of layered mare units with terrestrial analogs
M. Elise Rumpf, Heidi Needham, Sarah A. Fagents
2025, Icarus (350)
Recent advances in satellite imaging technology have greatly improved our observations of planetary surfaces. The Lunar Reconnaissance Orbiter (LRO) Narrow Angle Camera (NAC) records images with resolutions on average of 0.5 m per pixel, resolving meter scale features on the surface of the Moon. NAC images have revealed layered deposits, interpreted to...
Reevaluation of thermal maturity and stages of petroleum formation of the Mississippian Barnett Shale, Fort Worth Basin, Texas
Michael Lewan, M.J. Pawlewicz
2025, AAPG Bulletin (101) 1945-1970
New data including measured reflectance (%Ro), programmed open-system pyrolysis data, and kerogen elemental analyses obtained on the Mississippian Barnett Shale in the Fort Worth Basin, Texas, indicate that secondary-gas generation starts at 1.5% Ro and not at the previously prescribed 1.1% Ro. Oil-cracking kinetic parameters derived from pyrolysis experiments in the presence and...
An intercomparison of DOC estimated from fDOM sensors in wildfire affected streams of the western United States
Garrett Alexander Akie, David W. Clow, Sheila F. Murphy, Gregory D. Clark, Michael R. Meador, Brian A. Ebel
2024, Hydrological Processes (38)
Wildfires in the western United States (US) have been demonstrated to affect water quality, including dissolved organic carbon (DOC), in streams. Elevated post-wildfire DOC concentration poses a potential risk to drinking water treatment systems. In-stream measurements of fluorescent dissolved organic matter (fDOM), a proxy for DOC, have shown potential to...
Sequoia groves of Yosemite: Visitor use and impacts monitoring
Sheri A. Shiflett, Jeffery S. Jenkins, Rachel F. Mattos, Peter Christian Ibsen, Nicole D. Athearn
2024, Forests (15)
Despite being long-lived and massive, giant sequoias (Sequoiadendron giganteum (Lindl.) J. Bucholz) are susceptible to erosion given their relatively shallow root structure. Human-caused soil compaction and vegetation loss through social trails are primary drivers of erosion in giant sequoia groves, particularly for trees that are near formal trails and access...
Spatial differences in predicted Phalaris arundinacea (reed canarygrass) occurrence in floodplain forest understories
John Delaney, Molly Van Appledorn, Nathan R. De Jager, Kristen L. Bouska, Jason J. Rohweder
2024, Ecosphere (15)
Reed canarygrass (Phalaris arundinacea L.) is one of the most common invaders of floodplains and wetlands in North America. In the Upper Mississippi River floodplain, invasion by reed canarygrass in forest understories can inhibit forest regeneration when gaps form in the overstory. Understanding the distribution of reed canarygrass in forest understories...
Bee habitat, but not bee community structure, varies across grassland management in four national parks in the Mid-Atlantic, USA
Diane L. Larson, Andrew P Landsman, Michael Simanonok, Jennifer L. Larson, Cora Davies, Clint Otto
2024, Ecology and Evolution (14)
National parks in the U.S. play a large role in providing habitat for native pollinators. In parks that are established to preserve cultural landscapes, park managers recognize an opportunity to improve pollinator habitat while maintaining historically accurate conditions. In this study we document floral resources and native bees within...
Abiotic and biotic factors related to growth of non-native Walleyes in Lake Pend Oreille, Idaho
Susan Frawley, Matthew P. Corsi, Andrew M. Dux, Ryan S. Hardy, Michael C. Quist
2024, North American Journal of Fisheries Management (44) 1325-1341
Objective Growth is one of the primary drivers of fish population dynamics and understanding factors influencing growth is vital to effective management of fish populations. This study investigated potential factors influencing growth of a recently established, non-native population of Walleye Sander vitreus in the Lake Pend Oreille system in northern...
Presence-absence surveys yield spatially imprecise information about nesting sites of an endangered, forest-nesting seabird
Jonathan J. Spurgeon, Lindsay J. Adrean, S. Kim Nelson, Matthew G. Betts, Daniel D. Roby, James W. Rivers
2024, PLoS ONE (19)
Presence-absence surveys are frequently used to monitor populations of rare and elusive species. Such data may also be used as a proxy for breeding activity, but links between presence-absence data and higher-order processes must be validated to determine their reliability. The Marbled Murrelet (Brachyramphus marmoratus) is a threatened seabird that...
Pragmatically mapping Phragmites with unoccupied aerial systems: A comparison of invasive species land cover classification using RGB and multispectral imagery
Alexandra Danielle Evans, Jennifer Marie Cramer, Victoria Mary Scholl, Erika E. Lentz
2024, Remote Sensing (16)
Unoccupied aerial systems (UASs) are increasingly being deployed in coastal environments to rapidly map and monitor changes to geomorphology, vegetation, and infrastructure, particularly in difficult to access areas. UAS data, relative to airplane or satellite data, typically have higher spatial resolution, sensor customization, and increased flexibility in temporal resolution, which...
Mixed responses of tenebrionid beetles to solar energy development in the Mojave Desert
Steven Mark Grodsky, Joshua W. Campbell, Karl A. Roeder, Evan Waite, Ethan R. Wright, M. Andrew Johnston
2024, Journal of Arid Environments (225)
Solar energy development causes land-use change and habitat alteration that may affect desert ecosystems. Tenebrionid beetles have evolved to exploit desert environments and heavily contribute to ecosystem functionality in aridlands, yet their species-specific, ecological responses to solar energy development are unknown. Our objective was to elucidate effects of solar energy...
