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

183987 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 754, results 18826 - 18850

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Conceptualizing ecological responses to dam removal: If you remove it, what's to come?
J. Ryan Bellmore, George R. Pess, Jeffrey J. Duda, Jim E. O'Connor, Amy E. East, Melissa M. Foley, Andrew C. Wilcox, Jon J. Major, Patrick B. Shafroth, Sarah A. Morley, Christopher S. Magirl, Chauncey W. Anderson, James E. Evans, Christian E. Torgersen, Laura S. Craig
2019, BioScience (69) 26-39
One of the desired outcomes of dam decommissioning and removal is the recovery of aquatic and riparian ecosystems. To investigate this common objective, we synthesized information from empirical studies and ecological theory into conceptual models that depict key physical and biological links driving ecological responses to removing dams. We define...
Volcanic ash resuspension from the Katmai Region
Kristi L. Wallace, Hans Schwaiger
2019, Park Science
Volcanic ash is not only a hazard during an eruptive event; in strong winds, previously deposited loose volcanic ash can be picked up and reworked into dust clouds. Resuspension and transport of fine-grained volcanic ash from Katmai National Park and Preserve, Alaska has been observed and documented many times over...
Recent outer-shelf foraminiferal assemblages on the Carnarvon Ramp and Northwestern Shelf of Western Australia
Christian Haller, Pamela Hallock, Albert C. Hine, Christopher G. Smith
2019, Book chapter, Geologic problem solving with microfossils IV
The carbonate sediments of the Western Australian shelf in the Indian Ocean host diverse assemblages of benthic foraminifera. Environments of the shelf are dominated by the southward-flowing Leeuwin Current, which impacts near-surface circulation and influences biogeographic ranges of Indo-Pacific warm-water foraminifera. Analyses of outer ramp to upper slope sediments (127–264...
Improving conservation policy with genomics: A guide to integrating adaptive potential into U.S. Endangered Species Act decisions for conservation practitioners and geneticists
W.C. Funk, Brenna R. Forester, Sarah J. Converse, Catherine Darst, Steve Morey
2019, Conservation Genetics (20) 115-134
Rapid environmental change makes adaptive potential—the capacity of populations to evolve genetically based changes in response to selection—more important than ever for long-term persistence of at-risk species. At the same time, advances in genomics provide unprecedented power to test for and quantify adaptive potential, enabling consideration of adaptive potential in...
Guadalupe Bass flow-ecology relationships; with emphasis on the impact of flow on recruitment
Timothy B. Grabowski, Heather M. Williams, Robin Verble, Allison Pease, Jessica Pease
2019, Cooperator Science Series 144-2019
Guadalupe Bass Micropterus treculii is an economically and ecologically important black bass species endemic to the Edwards Plateau ecoregion and the lower portions of the Colorado River in central Texas. It is considered a fluvial specialist and as such, there are concerns that the increasing demands being placed upon the...
Application strategy for an anthraquinone-based repellent and the protection of soybeans from Canada goose depredation
Scott J. Werner, Matthew Gottlob, Charles D. Dieter, Joshua D. Stafford
2019, Human-Wildlife Interactions (13) 308-316
Agricultural crops can sustain extensive damage caused by Canada geese (Branta canadensis) when these crops are planted near wetlands or brood-rearing sites. From 2000 to 2015, South Dakota Game, Fish and Parks spent >$5.6 million to manage damages caused by Canada geese to agricultural crops (primarily soybeans) in...
Living with wildfire in Archeluta County, Colorado: 2015 data report
James Meldrum, Hannah Brenkert-Smith, Pamela Wilson, Patricia A. Champ, Christopher M. Barth, Angela Boag
2019, Research Note RMRS-RN-79
Residents in the wildland-urban interface (WUI) can play an important role in reducing wildfire’s negative effects by performing wildfire risk mitigation on their property. This report offers insight into the wildfire risk mitigation activities and related considerations, such as attitudes, experiences, and concern about wildfire, for people with homes in...
Living with wildfire in La Plata County, Colorado: 2015 data report
Hannah Brenkert-Smith, James Meldrum, Pamela Wilson, Patricia A. Champ, Christopher M. Barth, Angela Boag
2019, Research Note RMRS-RN-80
Residents in the wildland-urban interface (WUI) can play an important role in reducing wildfire’s negative effects by performing wildfire risk mitigation on their property. This report offers insight into the wildfire risk mitigation activities and related considerations, such as attitudes, experiences, and concern about wildfire, for people with homes in...
Relationships between wildfire burn severity, cavity-nesting bird assemblages and habitat in an eastern ponderosa pine forest
E. C. Keele, V. M. Donovan, C. P. Roberts, S. M. Nodskov, C. L. Wonkka, Craig R. Allen, L. Powell, David A. Wedin, D. G. Angeler, D. Twidwell
2019, American Midland Naturalist (18) 1-17
Historically, eastern ponderosa pine (Pinus ponderosa) forests were described as sparse patches of old-growth trees maintained by frequent, low-severity fires; however, in recent decades, there have been a number of large mixed-severity wildfires throughout the range of these forests. Wildlife responses to severe fire disturbance in eastern ponderosa pine forests...
Yellowstone’s birds are vital
Robert H. Diehl, Douglas W. Smith
2019, Yellowstone Science (27) 46-48
Traveling through Yellowstone National Park (YNP), visitors frequently stop to enjoy the park’s birds: small songbirds flitting about the willows, sandhill cranes engaged in their ritual mating dances, or myriad species of waterfowl loafing in one of the park's many wetlands. Typically while driving the roads of YNP, a majority...
Volcanic hazards in Alaska’s National Parks
Katherine Mulliken, Kristi L. Wallace, Cheryl Cameron, Christopher F. Waythomas
2019, Park Science
There are over 100 volcanoes in Alaska, 54 of which are considered historically active. A historically active volcano is one that fits one of the following criteria: a documented or strongly suspected eruption since the year 1700, persistent fumaroles near boiling point, significant deformation with a volcanic cause, or an...
Deep convolutional neural networks for map-type classification
Xiran Zhou, Wenwen Li, Samantha Arundel, Jun Liu
2019, Conference Paper, Autocarto 2018: Proceedings
Maps are an important medium that enable people to comprehensively understand the configuration of cultural activities and natural elements over different times and places. Although a massive number of maps are available in the digital era, how to effectively and accurately locate and access the desired map on the Internet...
Perspectives and challenges for the use of radar in biological conservation
Ommo Huppop, Michal Ciach, Robert H. Diehl, Don Reynolds, Phillip Stepanian, Myles Menz
2019, Ecography (42) 912-930
Radar is at the forefront for the study of broad‐scale aerial movements of birds, bats and insects and related issues in biological conservation. Radar techniques are especially useful for investigating species which fly at high altitudes, in darkness, or which are too small for applying electronic...
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...