Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

183839 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 749, results 18701 - 18725

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Developing earthquake forecast templates for fast and effective communication
Sara K. McBride, Andrew J. Michael, Anne M. Wein, Jeanne L. Hardebeck, Julia S. Becker, Sally H. Potter, Suzanne C. Perry, Morgan T. Page, Matthew Gerstenberger, Edward H. Field, Nicholas van der Elst
2019, Conference Paper, Earthquake engineering. National conference. 11th 2018: Integrating science, engineering and policy
No abstract available....
Impact cratering of Mercury
Clark R. Chapman, David M. H. Baker, Olivier S. Barnouin, Caleb I. Fassett, Simone Marchi, William Merline, Lillian R. Ostrach, Louise Prockter, Robert G. Strom
2019, Book chapter
No abstract available....
The volcanic character of Mercury
Paul K. Byrne, Jennifer L Whitten, Christian Klimczak, Francis M. McCubbin, Lillian R. Ostrach
2019, Book chapter, Mercury: The view after MESSENGER
No abstract available....
Subterranean invasion by gapped ringed crayfish: Effectiveness of a removal effort and barrier installation
J.B. Mouser, D.C. Ashley, T. Aley, Shannon K. Brewer
2019, Diversity (11)
Non-native crayfish invasion is a major threat to many stream fauna; however, invasions in subterranean habitats are rarely documented. Our study objectives were to examine demographics and morphological and life-history traits of a gapped ringed crayfish Faxonius neglectus chaenodactylus population that invaded Tumbling Creek Cave and determine the...
Investigation into the effect of heteroatom content on kerogen structure using advanced 13C solid-state nuclear magnetic resonance spectroscopy
Wenying Chu, Xiaoyan Cao, Klaus Schmidt-Rohr, Justin E. Birdwell, Jingdong Mao
2019, Energy & Fuels (33) 645-653
To elucidate how different extreme heteroatom concentrations in oil shale kerogen may present and contribute to various structural features, three shale samples, containing kerogen with high oxygen content, low heteroatom content, and high sulfur content, were analyzed using advanced 13C solid-state nuclear magnetic resonance (NMR) techniques, including multiple cross-polarization/magic angle spinning...
A collection of historic seismic instrumentation photographs at the Albuquerque Seismological Laboratory
Sabrina Veronica Moore, Charles R. Hutt, Robert E. Anthony, Adam T. Ringler, Alexis Casondra Bianca Alejandro, David C. Wilson
2019, Seismological Research Letters (90) 765-773
The Albuquerque Seismological Laboratory (ASL) has preserved a collection of photographs of seismographic equipment, stations, and drawings used by the United States Coast and Geodetic Survey (USC&GS) in the early-to-mid-twentieth century. The photographs were transferred to ASL from the US Department of Commerce building in Washington DC after ASL became...
Data sharing in magnetotellurics
Anna Kelbert, Svetlana Erofeeva, Chad Trabant, Rich Karstens, Mickey C. Van Fossen
2019, Eos, Earth and Space Science News (99)
Here, we introduce the first openly available comprehensive database of magnetotelluric (MT) and related electromagnetic data that we developed and matured over the past decade, explain how to access the data, and describe the challenges that had to be overcome to make MT data sharing possible. The database is a...
Stable pack abundance and distribution in a harvested wolf population
Sarah B. Bassing, David E. Ausband, Michael S. Mitchell, Paul Lukacs, Allison Keever, Greg Hale, Lisette Waits
2019, Journal of Wildlife Management (83) 577-590
Harvesting gray wolves (Canis lupus) could affect the abundance and distribution of packs, but the frequency of change in pack occurrence (i.e., turnover) and relative effects of harvest compared to environmental factors is unclear. We used noninvasive genetic sampling, hunter surveys, and occupancy models to evaluate...
Movement and diel habitat use of juvenile Neosho Smallmouth Bass in an Ozark stream
Andrew D. Miller, Robert Mollenhauer, Shannon K. Brewer
2019, North American Journal of Fisheries Management (39) 240-253
Documenting fish movement patterns and examining relationships with both fish and habitat characteristics are essential aspects of sound conservation and management. Stream fish movement and habitat use have been associated with a myriad of factors, and variability among individuals is common. Movement and habitat use patterns...
The development of a GIS methodology to identify oxbows and former stream meanders from LiDAR-derived digital elevation models
Courtney L. Zambory, Harvest Ellis, Clay Pierce, Kevin J. Roe, Michael J. Weber, Keith E. Schilling, Nathan C. Young
2019, Remote Sensing (11)
Anthropogenic development of floodplains and alteration to natural hydrological regimes have resulted in extensive loss of off-channel habitat. Interest has grown in restoring these habitats as an effective conservation strategy for numerous aquatic species. This study developed a process to reproducibly identify areas of former stream meanders to assist future...
Global sea-level contribution from Arctic land ice: 1971 to 2017
Jason E. Box, William T. Colgan, Bert Wouters, David O Burgess, Shad O’Neel, Laura Thomson, Sebastian H Mernild
2019, Environmental Research Letters (13)
The Arctic Monitoring and Assessment Program (AMAP) (AMAP, 2017) identifies the Arctic as the largest regional source of land ice to global sea-level rise in the 2003 to 2014 period. Yet, this contextualization ignores the longer perspective from in-situ records of glacier mass balance. Here, using 18 (> 55 °N latitude) glacier and...
Long-term soil-water tension measurements in semi-arid environments: A method for automated tensiometer refilling
Joel B. Smith, Jason W. Kean
2019, Vadose Zone Journal (17)
Tensiometer-equipped data acquisition systems measure and record positive and negative soil-water pressures. These data contribute to studies in hillslope hydrology, including analyses of rainfall runoff, near-surface hydrologic response, and slope stability. However, the unique ability of a tensiometer to rapidly and accurately measure pre- and post-saturation subsurface pressures requires maintenance...
UZIG research: Measurement and characterization of unsaturated zone processes under wide-ranging climates and changing conditions
Jared J. Trost, Benjamin B. Mirus, Kimberlie Perkins, Wesley R. Henson, John R. Nimmo, Rafael Munoz-Carpena
2019, Vadose Zone Journal (17)
Unsaturated zone properties and processes are central to understanding the interacting effects of land-use change, contamination, and hydroclimate on our ability to grow food, sustain clean water supplies, and minimize loss of life and property. Advances in unsaturated zone science are being achieved through collaborations across traditional boundaries where information...
Use of blood clotting assays to assess potential anticoagulant rodenticide exposure and effects in free-ranging birds of prey
Sofi Hindmarch, Barnett A. Rattner, John E. Elliott
2019, Science of the Total Environment (657) 1205-1216
Non-target wildlife, particularly birds of prey, are widely exposed to and acutely poisoned by anticoagulant rodenticides (ARs). An unresolved issue surrounding such exposure, however, is the potential for sublethal effects. In particular, the consequences of AR exposure and resulting coagulopathy on health and survival of unintentionally exposed animals, which often encounter a multitude of anthropogenic...
Efficient hydrogeological characterization of remote stream corridors using drones
Martin A. Briggs, Cian B. Dawson, Christopher Holmquist-Johnson, Kenneth H. Williams, John W. Lane Jr.
2019, Hydrological Processes (33) 316-319
This project demonstrates the successful use of small unoccupied aircraft system (sUASs) for hydrogeological characterization of a remote stream reach in a rugged mountain terrain. Thermal infrared, visual imagery, and derived digital surface models are used to inform conceptual models of groundwater/surface‐water exchange and efficiently geolocate zones of preferential groundwater...
The planktonic foraminiferal response to the Paleocene-Eocene thermal maximum on the Atlantic coastal plain
Caitlin M. Livsey, Tali Babila, Marci M. Robinson, Timothy J. Bralower
2019, Marine Micropaleontology (146) 39-50
Planktonic foraminiferal assemblages in two cores from Maryland and New Jersey show evidence for significant changes in surface ocean habitats on the continental shelf during the Paleocene-Eocene Thermal Maximum (PETM). At both sites, significant assemblage shifts occur immediately before the onset of the event. These changes include the appearance of abundant triserial/biserial species as...
Estimating occurrence, prevalence, and detection of amphibian pathogens: Insights from occupancy models
B. A. Mosher, Adrianne Brand, ANM Wiewel, D. A. W. Miller, MT Gray, Debra L. Miller, Evan H. Campbell Grant
2019, Journal of Wildlife Diseases (55) 563-575
Understanding the distribution of pathogens across landscapes and their prevalence within host populations is a common aim of wildlife managers. Despite the need for unbiased estimates of pathogen occurrence and prevalence for planning effective management interventions, many researchers fail to account for imperfect pathogen detection. Instead raw data are often...
Pitfall traps: A review of methods for estimating arthropod abundance
Courtney J. Conway, Rhianna Hohbein
2019, Wildlife Society Bulletin (42) 597-606
Pitfall traps are commonly used in diet studies for insectivorous and omnivorous wildlife. Pitfall trap methodologies and designs vary tremendously among studies and investigators, and this variation and lack of standardization limits scientists’ abilities to compare their results to others. We conducted a literature review to identify the most common...
Salt marsh ecosystem restructuring enhances elevation resilience and carbon storage during accelerating relative sea-level rise
Meagan Gonneea Eagle, Christopher V. Maio, Kevin D. Kroeger, Andrea D. Hawkes, Jordan Mora, Richard Sullivan, Stephanie Madsen, Richard M. Buzard, Niamh Cahill, Jeffrey P. Donnelly
2019, Estuarine, Coastal and Shelf Science (217) 56-68
Salt marshes respond to sea-level rise through a series of complex and dynamic bio-physical feedbacks. In this study, we found that sea-level rise triggered salt marsh habitat restructuring, with the associated vegetation changes enhancing salt marsh elevation resilience. A continuous record of marsh elevation relative to sea level that includes reconstruction of high-resolution, sub-decadal, marsh elevation over the...
Evaluating consumptive and nonconsumptive predator effects on prey density using field times series data
John A. Marino, Scott D. Peacor, David Bunnell, Henry A. Vanderploeg, Steven A. Pothoven, Ashley K. Elgin, James R. Bence, J. Jiao, Edward L. Ionides
2019, Ecology (100)
Determining the degree to which predation affects prey abundance in natural communities constitutes a key goal of ecological research. Predators can affect prey through both consumptive effects (CEs) and nonconsumptive effects (NCEs), although the contributions of each mechanism to the density of prey populations remain largely hypothetical in most systems....
On the contribution of waves to total coastal water level changes in the context of sea level rise: a response to Melet, et al. (2018)
Jerome Aucan, Ron Hoeke, Curt D. Storlazzi, Justin Stopa, Moritz Wandres, Ryan J. Lowe
2019, Climate Change (9)
Response to Melet, A., Meyssignac, B., Almar, R. & Le Cozannet, G. Under-estimated wave contribution to coastal sea-level rise. Nat. Clim. Change 8, 234–239 (2018). In a recent paper, Melet et al.1 claim that the contribution of wind-waves to coastal sea-level rise has been under-estimated. Although we agree with the overall...
Public acceptability of development in the Northern Forest of Vermont, USA – the influence of wildlife information, recreation involvement, and demographic characteristics
Jessica Espenshade, James Murdoch, Therese M. Donovan, Robert Manning, Charles Bettigale, John Austin
2019, PLoS ONE (13)
Increasing development such as roads and houses will alter future landscapes and result in biological, social, and economic trade-offs. Managing development requires information on the public’s acceptability of development and understanding which factors shape acceptability. In this study, we examined three questions: 1) What is the public’s acceptability...
Congruent population genetic structure but differing depths of divergence for three alpine stoneflies with similar ecology and geographic distributions
Scott Hotaling, J. Joseph Giersch, Debra S. Finn, Lusha M. Tronstad, Steve Jordan, Larry Serpa, Ronald Call, Clint C. Muhlfeld, David W. Weisrock
2019, Freshwater Biology (64) 335-347
Comparative population genetic studies provide a powerful means for assessing the degree to which evolutionary histories may be congruent among taxa while also highlighting the potential for cryptic diversity within existing species.In the Rocky Mountains, three confamilial stoneflies (Zapada glacier , Lednia tumana , and Lednia tetonica ; Plecoptera, Nemouridae) occupy cold alpine streams...