Transcriptomic response to elevated water temperatures in adult migrating Yukon River Chinook salmon (Oncorhynchus tshawytscha)
Lizabeth Bowen, Vanessa R. von Biela, Stephen D. McCormick, Amy M. Regish, Shannon C. Waters-Dynes, Blythe Durbin-Johnson, Monica Britton, Matt Settles, Daniel S. Donnelly, Sarah M. Laske, Michael P. Carey, Randy J Brown, Christian E. Zimmerman
2020, Conservation Physiology (8)
Chinook salmon (Oncorhynchus tshawytscha) declines are widespread and may be attributed, at least in part, to warming river temperatures. Water temperatures in the Yukon River and tributaries often exceed 18°C, a threshold commonly associated with heat stress and elevated mortality in Pacific salmon. Untangling the complex web of direct...
Impacts of periodic dredging on macroinvertebrate prey availability for benthic foraging fishes in central San Francisco Bay, California
Susan E. W. De La Cruz, Isa Woo, Laurie Hall, Alison Flanagan, Hannah Mittelstaedt
2020, Open-File Report 2020-1086
BackgroundBecause of its importance for species covered under Federal Fishery Management Plans (FMPs), the San Francisco Bay (SFB) estuary has been designated as Essential Fish Habitat (EFH) under the Magnuson-Stevens Fishery Conservation and Management Act (MSA; 16 United States Code §18559b). Within this estuary, benthic macroinvertebrate communities provide important...
Keystone predators govern the pathway and pace of climate impacts in a subarctic marine ecosystem
Douglas B Rasher, Robert S Stenek, Jochen Halfar, Kristy J Kroeker, Justin B. Ries, M. Tim Tinker, Phoebe T W Chan, J Fietzke, Nicolas Kamenos, Brenda H. Konar, Jonathan S. Lefcheck, Christopher J D Norley, Ben Weitzman, Isaac T Westfield, James A. Estes
2020, Science (369) 1351-1354
Predator loss and climate change are hallmarks of the Anthropocene yet their interactive effects are largely unknown. Here, we show that massive calcareous reefs, built slowly by the alga Clathromorphum nereostratum over centuries to millennia, are now declining because of the emerging interplay between these two processes. Such reefs, the structural base...
Lead speciation, bioaccessibility and source attribution in Missouri's Big River watershed
Matthew Noerpel, Michael Pribil, Danny Rutherford, Preston Law, Karen Bradham, Clay Nelson, Rob Weber, Gene Gunn, Kirk G. Scheckel
2020, Applied Geochemistry (123)
The Southeast Missouri Lead District is among the most productive lead deposits exploited in modern times. Intensive mining conducted prior to regulations resulted in a legacy of lead contaminated soil, large piles of mine tailings and elevated childhood blood lead levels. This study seeks to identify the source of the...
40 years strong—Long-time Geoscience Australia, U.S. Geological Survey (USGS) partnership benefits both agencies and the world
U.S. Geological Survey
2020, General Information Product 206
In 1979, the Australian Government chose the city of Alice Springs to host a Landsat Ground Station because of its location in central Australia. This location enables satellite coverage of the entire Australian continent. Its antennas have played a key role in supporting international satellite programs over more than 40...
Assessment of undiscovered gas resources of the Sacramento Basin Province in California, 2019
Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Cheryl A. Woodall, Kristen R. Marra, Heidi M. Leathers-Miller, Phuong A. Le
2020, Fact Sheet 2020-3036
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 512 billion cubic feet of gas in the Upper Jurassic–Neogene Total Petroleum System of the Sacramento Basin Province in California....
Effect of water velocity and temperature on energy use, behaviour and mortality of pallid sturgeon Scaphirhynchus albus larvae
Joseph T. Mrnak, Laura B. Heironimus, Daniel A. James, Steven R. Chipps
2020, Journal of Fish Biology (97) 1690-1700
Natural reproduction of pallid sturgeon Scaphirhynchus albus has been limited for decades and a recruitment bottleneck is hypothesized to occur during the larval stage of development. In this study, we evaluated the effects of water velocity and temperature on the swimming activity, energy use, settling behaviour and mortality of endogenously feeding larvae....
Relative toxicity and sublethal effects of NaCl and energy-related saline wastewaters on prairie amphibians
Brian J. Tornabene, Creagh W Breuner, Blake R. Hossack
2020, Aquatic Toxicology (228)
Increasing salinity in freshwater environments is a growing problem due both to the negative influences of salts on ecosystems and their accumulation and persistence in environments. Two major sources of increased salinity from sodium chloride salts (NaCl) are saline wastewaters co-produced during...
Spatial and vertical bias in down-looking ship-based acoustic estimates of fish density in Lake Superior: Lessons learned from multi-directional acoustics
Ryan C Grow, Thomas R. Hrabik, Daniel Yule, Bryan G. Matthias, Jared T. Myers, Chad Abel
2020, Journal of Great Lakes Research (46) 1639-1649
Hydroacoustic surveys using hull-mounted down-looking transducers are useful for estimating pelagic fish densities; however, this method may miss shallow fish owing to the acoustic surface dead zone and vessel avoidance. Our objective was to compare pelagic fish density estimates acquired by a traditional down-looking acoustic survey to estimates obtained by...
Habitat use by tiger prey in Thailand’s Western Forest Complex: What will it take to fill a half-full tiger landscape?
Pornkamol Jornburom, Somphot Duangchantrasiri, Sitthichai Jinamoy, Anak Pattanavibool, James E. Hines, Todd W. Arnold, John Fieberg, James L D Smith
2020, Journal for Nature Conservation (58)
Tiger populations are declining globally, and depletion of major ungulate prey is an important contributing factor. To better understand factors affecting prey distribution in Thailand’s Western Forest Complex (WEFCOM), we conducted sign surveys for gaur (Bos gaurus), banteng (Bos javanicus), and sambar (Rusa...
Microbiomes from biorepositories? 16S rRNA bacterial amplicon sequencing of archived and contemporary intestinal samples of wild mammals (Eulipotyphla: Soricidae)
Stephen E. Greiman, Joseph A. Cook, Timothy Odem, Katelyn Cranmer, Schuyler W Liphardt, Damian M. Menning, Sarah A. Sonsthagen, Sandra L. Talbot
2020, Frontiers in Ecology and Evolution (8)
Interest in gut microbial community composition has exploded recently as a result of the increasing ability to characterize these organisms and a growing understanding of their role in host fitness. New technologies, such as next generation amplicon (16S rRNA) sequencing, have enabled identification of bacterial communities from samples of diverse...
Seismic analysis of the 2020 Magna, Utah, earthquake sequence: Evidence for a listric Wasatch fault
Guanning Pang, Keith D. Koper, Maria Messimeri, Kristine L. Pankow, Ben Baker, Jamie Farrell, James Holt, J. Mark Hale, Paul B. Robertson, Relu Burlacu, James C. Pechmann, Katherine Whidden, Monique M. Holt, Amir Allam, Christopher DuRoss
2020, Geophysical Research Letters (47)
The 18 March 2020 Mw 5.7 Magna earthquake near Salt Lake City, Utah, offers a rare glimpse into the subsurface geometry of the Wasatch fault system—one of the world's longest active normal faults and a major source of seismic hazard in northern Utah. We analyze the Magna earthquake...
Earthquake information products and tools from the Advanced National Seismic System (ANSS)
Lisa A. Wald
2020, Fact Sheet 2020-3042
This Fact Sheet describes post-earthquake products and tools provided by the Advanced National Seismic System (ANSS) through the U.S. Geological Survey Earthquake Hazards Program. The focus is on products that provide situational awareness immediately after significant earthquakes....
Movement dynamics of nonnative Burbot in the upper Green River system and implications for management
Tucker A. Brauer, Michael C. Quist, Darren T. Rhea, Troy W. Laughlin, Erik Waring
2020, North American Journal of Fisheries Management (40) 1161-1173
Burbot Lota lota were illegally introduced to the Green River, Wyoming, in the mid-1990s and pose a threat to recreational fisheries and native fish conservation. Although much is known about Burbot population dynamics, little is known about their movement patterns. Our objectives were to describe the movement dynamics of Burbot in the...
Integrated borehole, radar, and seismic velocity analysis reveals dynamic spatial variations within a firn aquifer in southeast Greenland
Siobhan Killingbeck, N. C. Schmerr, L. N. Montgomery, A. D. Booth, P. W. Livermore, Olivia L. Miller, J. Guandique, S. Burdick, R. R. Forster, L. S. Koenig, Anatoly Legchenko, S. R. M. Ligtenberg, C. Miege, D. K. Solomon, L. J. West
2020, Geophysical Research Letters (47)
Perennial water storage in firn aquifers has been observed within the lower percolation zone of the southeast Greenland ice sheet. Spatially distributed seismic and radar observations, made ~50 km upstream of the Helheim Glacier terminus, reveal spatial variations of seismic velocity within a firn aquifer. From 1.65 to 1.8 km elevation, shear‐wave...
The effects of management practices on grassland birds—Sedge Wren (Cistothorus stellaris)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Barry D. Parkin, Travis L. Wooten, Betty R. Euliss
2020, Professional Paper 1842-V
Keys to Sedge Wren (Cistothorus stellaris) management include providing tall, dense grasslands with moderate forb coverage and minimizing disturbances during the breeding season. Sedge Wrens have been reported to use habitats with 30–166 centimeters (cm) average vegetation height, 8–80 cm visual obstruction reading, 15–75 percent grass cover, 3–78 percent forb...
The effects of management practices on grassland birds—Lesser Prairie-Chicken (Tympanuchus pallidicinctus)
Brent E. Jamison, Lawrence D. Igl, Jill A. Shaffer, Douglas H. Johnson, Christopher M. Goldade, Betty R. Euliss
2020, Professional Paper 1842-D
The key to Lesser Prairie-Chicken (Tympanuchus pallidicinctus) management is maintaining expansive sand shinnery oak (Quercus havardii) or sand sagebrush (Artemisia filifolia) grasslands. Within these grasslands, areas should contain short herbaceous cover for lek sites (that is, an area where male prairie-chickens gather to engage in courtship displays to attract mates);...
Coastal marsh degradation into ponds induces irreversible elevation loss relative to sea level
Lennert Schepers, Patrick Brennand, Matthew L. Kirwan, Glenn R. Guntenspergen, Stijn Temmerman
2020, Geophysical Research Letters (47)
Coastal marshes and their valuable ecosystem services are feared to be lost by sea level rise, yet the mechanisms of marsh degradation into ponds and potential recovery are poorly understood. We quantified and analyzed elevations of marsh surfaces and pond bottoms along a marsh loss gradient (Blackwater...
Influence of demand and capacity in transportation simulations of short-notice, distant-tsunami evacuations
Nathan J. Wood, Kevin Henry, Jeff Peters
2020, Transportation Research Interdisciplinary Perspectives (7)
Distant tsunamis require short-notice evacuations in coastal communities to minimize threats to life safety. Given the available time to evacuate and potential distances out of hazard zones, coastal transportation planners and emergency managers can expect large proportions of populations to evacuate...
Ontogenetic diet shifts with potential ramifications for resource competition in a kokanee – Mysis diluviana system
Zachary B. Klein, Michael C. Quist, Andrew M. Dux, Matthew P. Corsi
2020, Article
Ontogenetic shifts represent important transitions that can influence how fish interact with their environment. However, ontogenetic shifts are rarely placed into a population context due to the difficulty of incorporating the vagaries of size-mediated interactions. As such, we evaluated the role of ontogenetic shifts in diet as they relate to...
Influenza A viruses remain infectious for more than seven months in northern wetlands of North America
Andrew M. Ramey, Andrew B. Reeves, Judith Z. Drexler, Joshua T. Ackerman, Susan E.W. De La Cruz, Andrew S. Lang, Christina Leyson, Paul T. Link, Diann Prosser, Gregory J. Robertson, Jordan Wight, Sungsu Youk, Erica Spackman, Mary Pantin-Jackwood, Rebecca L. Poulson, David E. Stallknecht
2020, Proceedings of the Royal Society B: Biological Sciences (287)
In this investigation, we used a combination of field- and laboratory-based approaches to assess if influenza A viruses (IAVs) shed by ducks could remain viable for extended periods in surface water within three wetland complexes of North America. In a field experiment, replicate filtered surface water samples...
High concentration methane hydrate in a silt reservoir from the deep-water Gulf of Mexico
Stephen Philips, Peter Flemings, Melanie Holland, Peter Schultheiss, William F. Waite, Junbong Jang, Ethan Petrou, Helen Hammon
2020, AAPG Bulletin (104) 1971-1995
We present results from 30 quantitative degassing experiments of pressure core sections collected during The University of Texas-Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition at Green Canyon Block 955 in the deep-water Gulf of Mexico as part of The University of Texas at Austin–US Department of Energy Deepwater...
Pressure coring a Gulf of Mexico deep-water turbidite gas hydrate reservoir: Initial results from The University of Texas–Gulf of Mexico 2-1 (UT-GOM2-1) Hydrate Pressure Coring Expedition
Peter Flemings, Stephen Phillips, Ray Boswell, Timothy Collett, Ann Cook, Tian Dong, Matthew Frye, David Goldberg, Giles Guerin, Melanie Holland, Junbong Jang, Kevin Meazell, Jamie Morrison, Joshua O’Connell, Ethan Petrou, Tom Pettigrew, Peter Polito, Alexey Portnov, Manasj Santra, Peter Schultheiss, Yongkoo Seol, William Shedd, Evan S. Solomon, Carla Thomas, William F. Waite, Kehua You
2020, AAPG Bulletin (104) 1847-1876
The University of Texas Hydrate Pressure Coring Expedition (UT-GOM2-1) recovered cores at near in situ formation pressures from a gas hydrate reservoir composed of sandy silt and clayey silt beds in Green Canyon Block 955 in the deep-water Gulf of Mexico. The expedition results are synthesized and linked to other...
Littoral sediment from rivers: Patterns, rates and processes of river mouth morphodynamics
Jonathan A. Warrick
2020, Frontiers in Earth Science (8)
Rivers provide important sediment inputs to many littoral cells, thereby replenishing sand and gravel of beaches around the world. However, there is limited information about the patterns and processes of littoral-grade sediment transfer from rivers into coastal systems. Here I address these information gaps by examining topographic and...
Rethinking a groundwater flow system using a multiple-tracer geochemical approach: A case study in Moab-Spanish Valley, Utah
Philip M. Gardner, Nora C. Nelson, Victor M. Heilweil, John E. Solder, Douglas K. Solomon
2020, Journal of Hydrology (590)
The Glen Canyon Group Aquifer (GCGA) is the sole source of public water supply for the city of Moab, Utah, a domestic and international tourist destination. Population and tourism growth are likely to target the GCGA for future water resources, but our analysis indicates...
