Sex- and developmental stage-related differences in the hepatic transcriptome of Japanese quail (Coturnix japonica) exposed to 17β-Trenbolone
Krittika Mittal, Paula F. P. Henry, Robert S. Cornman, Catherine M. Maddox, Niladri Basu, Natalie Karouna-Renier
2021, Environmental Toxicology and Chemistry (40) 2559-2570
Endocrine-disrupting chemicals can cause transcriptomic changes that may disrupt biological processes associated with reproductive function including metabolism, transport, and cell growth. We investigated effects from in ovo and dietary exposure to 17β-trenbolone (at 0, 1, and 10 ppm) on the Japanese quail (Coturnix japonica) hepatic transcriptome. Our objectives were to identify...
As the prey thickens: Rainbow trout select prey based upon width not length
Michael Dodrill, Charles Yackulic, Theodore Kennedy, Michael D. Yard, Josh Korman
2021, Canadian Journal of Fisheries and Aquatic Sciences (78) 809-819
Drift-feeding fish are typically considered size-selective predators. Yet, few studies have explicitly tested which aspect of prey “size” best explains size selection by drift-foraging fish. Here, we develop a Bayesian discrete choice model to evaluate how attributes of both prey and predator simultaneously influence size-selective foraging. We apply the model...
Refining sampling protocols for cavefishes and cave crayfishes to account for environmental variation
J.B. Mouser, Shannon K. Brewer, M.L. Niemiller, M. Mollenhauer, Van Den Bussche
2021, Subterranean Biology (39) 79-105
Subterranean habitats support a diverse array of organisms and represent imperative habitats in many conservation strategies; however, subterranean habitats are one of the most difficult environments to study. Accounting for variable sampling detection is necessary to properly evaluate conservation options for rare species such as karst and other groundwater organisms....
Climate impacts on source contributions and evaporation to flow in the Snake River Basin using surface water isoscapes (δ2H and δ18O)
Grace Windler, J. Renee Brooks, Henry M. Johnson, Randy Comeleo, Rob Coulombe, Gabriel J. Bowen
2021, Water Resources Research (57)
Rising global temperatures are expected to decrease the precipitation amount that falls as snow, causing greater risk of water scarcity, groundwater overdraft, and fire in areas that rely on mountain snowpack for their water supply. Streamflow in large river basins varies with the amount, timing, and type of precipitation, evapotranspiration,...
The North American Breeding Bird Survey in Mexico, 2008 to 2018—A status report
Water Resources Division, U.S. Geological Survey, Mexican National Commission for the Knowledge and Use of Biodiversity
2021, Circular 1479
Collection of avian population data has repeatedly been identified as a high priority for bird conservation in Mexico. To meet this need, in 2008 the North American Breeding Bird Survey (BBS), a volunteer-based survey, was expanded to include northern Mexico. The BBS in Mexico (Mexican BBS) is managed by the...
Demography of the Oregon spotted frog along a hydrologically modified river
Jennifer Rowe, Adam Duarte, Christopher Pearl, Brome McCreary, Patricia Haggerty, John Jones, Michael J. Adams
2021, Ecosphere (12)
Altered flow regimes can contribute to dissociation between life history strategies and environmental conditions, leading to reduced persistence reported for many wildlife populations inhabiting regulated rivers. The Oregon spotted frog (Rana pretiosa) is a threatened species occurring in floodplains, ponds, and wetlands in the Pacific Northwest...
Endophytic bacteria in grass crop growth promotion and biostimulation
James F. White, Xiaoqian Chang, Kathryn L. Kingsley, Qiuwei Zhang, Peerapol Chiaranunt, April Micci, Fernando Velazquez, Matthew T. Elmore, Sharron Crane, Shanjia Li, Jiaxin Lu, Maria Molina Cobos, Natalia Gonzalez-Benitez, Miguel J Beltran-Garcia, Kurt P. Kowalski
2021, Grass Research (1)
Plants naturally carry microbes on seeds and within seeds that may facilitate development and early survival of seedlings. Some crops have lost seed-vectored microbes in the process of domestication or during seed storage and seed treatment. Biostimulant microbes from wild plants were used by pre-modern cultures to re-acquire beneficial...
Resilience to fire and resistance to annual grass invasion in sagebrush ecosystems of US National Parks
Thomas Rodhouse, Jeffrey Lonneker, Lisa Bowersock, Diana Popp, Jamela Thompson, Gordon Dicus, Kathryn M. Irvine
2021, Global Ecology and Conservation (28)
Western North American sagebrush shrublands and steppe face accelerating risks from fire-driven feedback loops that transition these ecosystems into self-reinforcing states dominated by invasive annual grasses. In response, sagebrush conservation decision-making is increasingly done through the lens of resilience to fire and annual grass invasion resistance. Operationalizing...
Age and tectonic setting of the Quinebaug-Marlboro belt and implications for the history of Ganderian crustal fragments in southeastern New England, USA
Gregory J. Walsh, John N. Aleinikoff, Robert A. Ayuso, Robert P. Wintsch
2021, Geosphere (4) 1038-1100
Crustal fragments underlain by high-grade rocks represent a challenge to plate reconstructions, and integrated mapping, geochronology, and geochemistry enable the unravelling of the temporal and spatial history of exotic crustal blocks. The Quinebaug-Marlboro belt (QMB) is an enigmatic fragment on the trailing edge of the...
Monitoring abundance of aggregated animals (Florida manatees) using an unmanned aerial system (UAS)
Holly H Edwards, Jeffrey A. Hostetler, Bradley M Stith, Julien Martin
2021, Scientific Reports (11)
Imperfect detection is an important problem when counting wildlife, but new technologies such as unmanned aerial systems (UAS) can help overcome this obstacle. We used data collected by a UAS and a Bayesian closed capture-mark-recapture model to estimate abundance and distribution while accounting for imperfect detection...
Estimating abundance and simulating fertility control in feral burros
Jay V. Gedir, James W. Cain III, Bruce C. Lubow, Talesha Karish, David K. Delaney, Gary W. Roemer
2021, Journal of Wildlife Management (85) 1187-1199
Overabundant populations of feral equids are negatively impacting rangelands in the western United States. To effectively manage these populations, robust estimates of abundance and demography are necessary, as well as cost-effective methods of reducing abundance. We used a double-observer-sightability aerial survey method to estimate the number of feral burros (Equus...
Permafrost thaw in northern peatlands: Rapid changes in ecosystem and landscape functions
David Olefeldt, Liam Hefferman, Miriam C. Jones, A. Britta Sannel, Claire C. Treat, Merritt R. Turetsky
2021, Book chapter, Ecosystem collapse and climate change
Peatlands within the northern permafrost region cover approximately 2 million km2 and are characterized by organic soils that can be several meters thick, and a fine-scale mosaic of permafrost and non-permafrost landforms interspersed by shallow ponds and lakes. Ongoing permafrost thaw is transforming these peatlands, causing abrupt changes to their morphology,...
Magnetic surveys with unmanned aerial systems: Software for assessing and comparing the accuracy of different sensor systems, suspension designs and compensation methods
Leon Kaub, Gordon Keller, Claire Bouligand, Jonathan M.G. Glen
2021, Geochemistry, Geophysics, Geosystems (G-Cubed) (22)
A typical problem for magnetic surveys with small Unmanned Aerial Systems (sUAS) is the heading error caused by undesired magnetic signals that originate from the aircraft. This can be addressed by suspending the magnetometers on sufficiently long tethers. However, tethered payloads require skilled pilots and are difficult...
Extreme events trigger terrestrial and marine ecosystem collapses: A tale of two regions
Katinka X. Ruthrof, Joseph B. Fontaine, David D. Breshears, Jason P. Field, Craig D. Allen
2021, Book chapter, Ecosystem collapse and climate change
We outline the multiple, cross-scale, and complex consequences of terrestrial and marine ecosystem heatwaves in two regions on opposite sides of the planet: the southwestern USA and southwestern Australia, both encompassing Global Biodiversity Hotspots, and where ecosystem collapses or features of it have occurred in the past two decades. We...
Interacting effects of density-dependent and density-independent factors on growth rates in southwestern Cutthroat Trout populations
Brock M. Huntsman, Abigail Lynch, Colleen A. Caldwell
2021, Transactions of the American Fisheries Society (150) 651-664
Density-dependent (DD) and density-independent (DI) effects play an important role in shaping fish growth rates, an attribute that correlates with many life history traits in fishes. Consequently, understanding the extent to which DD and DI effects influence growth rates is valuable for fisheries assessments because it can inform managers about...
Comparison of historical water temperature measurements with landsat analysis ready data provisional surface temperature estimates for the Yukon River in Alaska
Carson Baughman, Jeff Conaway
2021, Remote Sensing (13)
Water temperature is a key element of freshwater ecological systems and a critical element within natural resource monitoring programs. In the absence of in situ measurements, remote sensing platforms can indirectly measure water temperature over time and space. The Earth Resources Observation and Science (EROS) Center has processed archived Landsat...
Sediment transport, turbidity, and dissolved oxygen responses to annual streambed drawdowns for downstream fish passage in a flood control reservoir
Liam N. Schenk, Heather M. Bragg
2021, Journal of Environmental Management (295)
Sediment transport, turbidity, and dissolved oxygen were evaluated during six consecutive water years (2013–2018) of drawdowns of a flood control reservoir in the upper Willamette Valley, Oregon, USA. The drawdowns were conducted to allow volitional passage of endangered juvenile chinook salmon through the dam's regulating outlets by lowering the reservoir elevation...
Egg retention of high-latitude sockeye salmon (Oncorhynchus nerka) in the Pilgrim River, Alaska, during the Pacific marine heatwave of 2014–2016
Michael P. Carey, Vanessa R. von Biela, Ashley Dunker, Kevin D. Keith, Merlyn Schelske, Charlie Lean, Christian E. Zimmerman
2021, Polar Biology (44) 1643-1654
Ocean and freshwater conditions can influence spawning success of Pacific salmon (Oncorhynchus spp.) by governing the energy content of fish at the start of and during the spawning migration. Ocean conditions determine the energy stores of fish at the freshwater entry, while freshwater conditions determine how quickly stored energy is depleted...
New geochemical tools for investigating resource and energy functions at deep-sea cold seeps using amino-acid δ15N in chemosymbiotic mussels (Bathymodiolus childressi)
Natasha Vokhshoori, Matt McCarthy, Hilary Close, Amanda Demopoulos, Nancy G. Prouty
2021, Geobiology (19) 601-617
In order to reconstruct the ecosystem structure of chemosynthetic environments in the fossil record, geochemical proxies must be developed. Here, we present a suite of novel compound-specific isotope parameters for tracing chemosynthetic production with a focus on understanding nitrogen dynamics in deep-sea cold seep environments. We examined the chemosymbiotic bivalve Bathymodiolus...
Nutrient limitation of algae and macrophytes in streams: Integrating laboratory bioassays, field experiments, and field data
Christopher A. Mebane, Andrew M. Ray, Amy M Marcarelli
2021, PLoS ONE (16)
Successful eutrophication control strategies need to address the limiting nutrient. We conducted a battery of laboratory and in situ nutrient-limitation tests with waters collected from 9 streams in an agricultural region of the upper Snake River basin, Idaho, USA. Laboratory tests used the green alga Raphidocelis subcapitata, the macrophyte Lemna minor (duckweed) with...
Land-based sediment sources and transport to southwest Puerto Rico coral reefs after Hurricane Maria, May 2017 to June 2018
Renee K. Takesue, Clark E. Sherman, Aaron O. Reyes, Olivia M. Cheriton, Natalia I. Ramirez, Roberto Viqueira Rios, Curt D. Storlazzi
2021, Estuarine, Coastal and Shelf Science (259)
The effects of runoff from land on nearshore ecosystems, including coral reef communities, are influenced by both sediment supply and removal by coastal processes. Integrated studies across the land-sea interface describing sources and transport of terrestrial sediment and its nearshore fate allow reef protection initiatives to target key onshore and offshore areas....
When hazard avoidance is not an option: Lessons learned from monitoring the postdisaster Oso landslide, USA
Mark E. Reid, Jonathan W. Godt, Richard G LaHusen, Stephen L Slaughter, Thomas C. Badger, Brian D. Collins, William H. Schulz, Rex L. Baum, Jeffrey A. Coe, Edwin L Harp, Kevin M. Schmidt, Richard M. Iverson, Joel B. Smith, Ralph A. Haugerud, David L. George
2021, Landslides (18) 2993-3009
On 22 March 2014, a massive, catastrophic landslide occurred near Oso, Washington, USA, sweeping more than 1 km across the adjacent valley flats and killing 43 people. For the following 5 weeks, hundreds of workers engaged in an exhaustive search, rescue, and recovery effort directly in...
Borreliosis transmission from ticks to humans associated with desert tortoise burrows: Examples of tick-borne relapsing fever in the Mojave Desert
Molly J Bechtel, K. Kristina Drake, Todd Esque, Nathan C Nieto, Jeffrey T. Foster, Mike B Teglas
2021, Vector-Borne and Zoonotic Diseases (21) 635-637
Ticks transmit pathogens and parasitize wildlife in turn causing zoonotic diseases in many ecosystems. Argasid ticks, such as Ornithodoros spp., harbor and transmit Borrelia spp., resulting in tick-borne relapsing fever (TBRF) in people. In the western United States, TBRF is typically associated with the bite of...
Regional occurrence of aqueous tungsten and relations with antimony, arsenic and molybdenum concentrations (Sardinia, Italy)
Rosa Cidu, Riccardo Biddau, Franco Frau, Richard Wanty, Stefano Naitza
2021, Journal of Geochemical Exploration (229)
Tungsten (W) is rarely found in natural waters, yet it can be introduced into the food chain and cause potentially toxic effects. Uptake of W by plants and vegetables, or trace presence of W in drinking water are...
The marine terraces of Santa Cruz Island, California: Implications for glacial isostatic adjustment models of last-interglacial sea-level history
Daniel R. Muhs, R. Randall Schumann, Lindsey T. Groves, Kathleen R. Simmons, Christopher R. Florian
2021, Geomorphology (389)
Glacial isostatic adjustment (GIA) models hypothesize that along coastal California, last interglacial (LIG, broadly from ~130 to ~115 ka) sea level could have been as high as +11 m to +13 m, relative to present, substantially higher than the commonly estimated elevation of +6 m....
