Evaluating riparian vegetation change in canyon-bound reaches of the Colorado River using spatially extensive matched photo sets
Michael L. Scott, Robert H. Webb, R. Roy Johnson, Raymond M. Turner, Jonathan M. Friedman, Helen C. Fairley
2018, Book chapter, Riparian research and management: Past, present, future: Volume 1 (General Technical Report RMRS-GTR-377)
Much of what we know about the functional ecology of aquatic and riparian ecosystems comes from work on regulated rivers (Johnson et al. 2012). What little we know about unregulated conditions on many of our larger rivers is often inferred from recollections of individuals, personal diaries, notes, maps, and collections...
Ontogenetic changes in swimming speed of silver carp, bighead carp, and grass carp larvae: implications for larval dispersal
Amy E. George, Tatiana Garcia, Benjamin H. Stahlschmidt, Duane Chapman
2018, PeerJ (6)
Bighead, silver, and grass carps are invasive in the waterways of central North America, and grass carp reproduction in tributaries of the Great Lakes has now been documented. Questions about recruitment potential motivate a need for accurate models of egg and larval dispersal. Quantitative data on swimming behaviors and capabilities...
Accounting for surveyor effort in large-scale monitoring programs
Kevin Aagaard, James E. Lyons, Wayne E. Thogmartin
2018, Journal of Fish and Wildlife Management (9) 459-466
Accounting for errors in wildlife surveys is necessary for reliable status assessments and quantification of uncertainty in estimates of population size. We apply a hierarchical log-linear Poisson regression model that accounts for multiple sources of variability in count data collected for the Integrated Waterbird Management and Monitoring Program during 2010–2014....
Navigating the field of decision analysis
Michael C. Runge, Eve McDonald-Madden
2018, Decision Point Online 4-11
Managers, policy makers, and decision makers with responsibility for environmental decisions have an extraordinarily difficult job. The systems they manage are complex (coupled human-natural systems), with many dimensions and complicated dynamics. Our knowledge of how those systems respond to management actions is often limited, so many of the decisions have...
Characterization of groundwater resources in the Chequamegon-Nicolet National Forest, Wisconsin: Nicolet Unit
Anna Fehling, Ken Bradbury, Peter R. Schoephoester, Stephen Mauel, Andrew T. Leaf, Paul Juckem, Randall Hunt
2018, Technical Report 004-2
No abstract available....
Geomorphic evolution of a gravel‐bed river under sediment‐starved vs. sediment‐rich conditions: River response to the world's largest dam removal
Amy E. East, Joshua B. Logan, Mark C. Mastin, Andrew C. Ritchie, Jennifer A. Bountry, Christopher S. Magirl, Joel B. Sankey
2018, Journal of Geophysical Research F: Earth Surface (123) 3338-3369
Understanding river response to sediment pulses is a fundamental problem in geomorphic process studies, with myriad implications for river management. However, because large sediment pulses are rare and usually unanticipated, they are seldom studied at field scale. We examine fluvial response to a massive (~20 Mt) sediment pulse released by the...
Characterization of groundwater resources in the Chequamegon-Nicolet National Forest, Wisconsin: Washburn/Great Divide Unit
Anna Fehling, Ken Bradbury, Peter R. Schoephoester, Stephen Mauel, Andrew T. Leaf, Paul Juckem, Randall Hunt
2018, Technical Report 004-4
No abstract; report has an executive summary....
Estimating the potential costs of brine production to expand the pressure-limited CO2 storage capacity of the Mount Simon Sandstone
Steven T. Anderson, Hossein Jahediesfanjani
Peter D. Warwick, editor(s)
2018, Conference Paper, U.S. Association for Energy Economics and International Association for Energy Economics North American Conference
The conventional wisdom is that widespread deployment of carbon capture and storage (CCS) is likely necessary to be able to satisfy baseload electricity demand, to maintain diversity in the energy mix, and to achieve mitigation of carbon dioxide (CO2) emissions at lowest cost (IPCC, 2014). If national-scale deployment of CCS...
GNIS-LD: Serving and visualizing the Geographic Names Information System Gazetteer as linked data
Blake Regalia, Krzysztof Janowicz, Gengchen Mai, Dalia E. Varanka, E. Lynn Usery
2018, Conference Paper, The semantic web; 15th International Conference, ESWC 2018, Heraklion, Crete, Greece, June 3–7, 2018, Proceedings
In this dataset description paper we introduce the GNIS-LD, an authoritative and public domain Linked Dataset derived from the Geographic Names Information System (GNIS) which was developed by the U.S. Geological Survey (USGS) and the U.S. Board on Geographic Names. GNIS provides data about current, as well as historical, physical,...
Population characteristics of Yellow Perch in a central Appalachia hydropower reservoir
Corbin D. Hilling, Nate D. Taylor, Stuart A. Welsh, Dustin M. Smith
2018, Journal of Fish and Wildlife Management (9) 486-495
Estimates of population characteristics of sport fishes inform fisheries management decisions and provide feedback on management strategies. Cheat Lake provides an unusual fishery in West Virginia because the hydropower reservoir supports a Yellow Perch Perca flavescens population. We estimated age structure, size structure, condition, total instantaneous mortality, growth, and summer diet for...
Remote sensing vegetation index methods to evaluate changes in greenness and evapotranspiration in riparian vegetation in response to the Minute 319 environmental pulse flow to Mexico
Pamela L. Nagler, Christopher J. Jarchow, Edward P. Glenn
2018, Proceedings of the International Association of Hydrological Sciences (380) 45-54
During the spring of 2014, 130 million m3 of water were released from the United States' Morelos Dam on the lower Colorado River to Mexico, allowing water to reach the Gulf of California for the first time in 13 years. Our study assessed the effects of water transfer or ecological environmental flows from...
The Introduced Argentine ant (Linepithema humile) on the California Channel Islands: Distribution and Patterns of Spread
Christina L. Boser, Korie Merrell, Robert N. Fisher, Ida Naughton, David A Holway
2018, Western North American Naturalist (78) 820-828
The Argentine ant (Linepithema humile) is a widespread and abundant introduced species that disrupts ecosystems throughout its introduced range. This invader was inadvertently introduced to Santa Catalina, San Clemente, Santa Cruz, and San Nicolas Islands at various points during the past century but currently appears to be absent from the...
Biodiversity of amphibians and reptiles at the Camp Cady Wildlife Area, Mojave Desert, California and comparisons with other desert locations
Kristy L. Cummings, Shellie R. Puffer, Jenny B. Holmen, Jason K. Wallace, Jeffrey E. Lovich, Kathie Meyer-Wilkins, Chris Petersen, Robert E. Lovich
2018, California Fish and Game (104) 129-147
We examined the biodiversity of amphibian and reptile species living in and near constructed ponds in the riparian area at the Camp Cady Wildlife Area (CCWA) in the Mojave Desert of San Bernardino County, California, based on field work from 1998-1999, 2016-2017, review of the literature, and searches for museum...
Early life history
Timothy B. Grabowski, Jonathan Grabowski
2018, Book chapter, Atlantic Cod: A bio-ecology
No abstract available....
The National Elevation Dataset
Dean B. Gesch, Gayla A. Evans, Michael J. Oimoen, Samantha T. Arundel
2018, Book chapter
The National Elevation Dataset (NED) is a primary elevation data product that has been produced and distributed by the U.S. Geological Survey (USGS). Since its inception, the USGS has compiled and published topographic information in many forms, and the NED is a significant development in this long line of products...
Executive summary. In Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report
Richard Birdsey, Melanie A. Mayes, Patricia Romero-Lankao, Raymond G. Najjar, Sasha C. Reed, Nancy Cavallaro, Gyami Shrestha, Daniel J. Hayes, Laura Lorenzoni, Anne Marsh, Kathy Tedesco, Tom Wirth, Zhiliang Zhu
Nancy Cavallaro, Gyami Shrestha, Richard Birdsey, Melanie A. Mayes, Raymond G. Najjar, Sasha C. Reed, Patricia Romero-Lankao, Zhiliang Zhu, editor(s)
2018, Report, Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report
Central to life on Earth, carbon is essential to the molecular makeup of all living things and plays a key role in regulating global climate. To understand carbon’s role in these processes, researchers measure and evaluate carbon stocks and fluxes. A stock is the quantity of carbon contained in a...
Analysis of population change and movement using robust design removal data
William A. Link, Sarah J. Converse, Amy A. Yackel Adams, Nathan J. Hostetter
2018, Journal of Agricultural, Biological, and Environmental Statistics (23) 463-477
In capture-mark-reencounter studies, Pollock’s robust design combines methods for open populations with methods for closed populations. Open population features of the robust design allow for estimation of rates of death or permanent emigration, and closed population features enhance estimation of population sizes. We describe a similar design, but for use...
Hydrogeochemical controls on brook trout spawning habitats in a coastal stream
Martin A. Briggs, Judson W. Harvey, Stephen T. Hurley, Donald O. Rosenberry, Timothy D. McCobb, Dale D. Werkema, John W. Lane Jr.
2018, Hydrology and Earth System Sciences (22) 6383-6398
Brook trout (Salvelinus fontinalis) spawn in fall and overwintering egg development can benefit from stable, relatively warm temperatures in groundwater-seepage zones. However, eggs are also sensitive to dissolved oxygen concentration, which may be reduced in discharging groundwater (i.e., seepage). We investigated a 2 km reach of the coastal Quashnet River in...
Role of fault gouge during Interaction between hydraulic fracture and a preexisting fracture
S. Mighani, David A. Lockner, Brian D. Kilgore, Brian Evans
2018, Conference Paper
Enhanced reservoir connectivity generally requires maximizing the intersection between hydraulic fracture (HF) and preexisting underground natural fractures (NF), while having the hydraulic fracture continue to propagate across the natural fractures. Observations of downhole core samples suggest that these natural fractures are in fact veins filled with minerals such as calcite...
Quantifying post-wildfire hillslope erosion with lidar
Francis K. Rengers, Luke McGuire
2018, Conference Paper
Following a wildfire, flooding and debris- flow hazards are common and pose a threat to human life and infrastructure in steep burned terrain. Wildfire enhances both water runoff and soil erosion, which ultimately shape the debris flow potential. The erosional processes that route excess sediment from hillslopes to debris-flow...
Natural resource condition assessment: Olympic National Park
Rebecca M. McCaffery, Kurt J. Jenkins, editor(s)
2018, Natural Resource Report NPS/OLYM/NRR—2018/1826
The Natural Resource Assessment Program aims to document condition and trends of selected park resources while identifying emerging issues and information needs. This information is intended to serve as a platform for natural resource managers to use in developing future resource stewardship priorities and planning.Olympic National Park (OLYM) on Washington’s...
Strategic and critical metals in produced geothermal fluids from Nevada and Utah
Stuart F. Simmons, Stephe H. Kirby, Philip L. Verplanck, Karen Duttweiler Kelley
2018, Conference Paper, Proceedings 43rd Stanford Geothermal Workshop
Herein we summarize the results of an investigation dealing with the concentrations and inventories of strategic, critical and valuable materials (SCVM) in produced fluids from geothermal and hydrocarbon reservoirs (50-250° C) in Nevada and Utah. Water samples were collected from thirty-four production wells across eight geothermal fields, the Uinta Basin...
Effects of simulated magnitude 9 earthquake motions on structures in the Pacific Northwest
Nasser A. Marafi, M. Eberhard, J. Berman, Erin A. Wirth, Arthur D. Frankel, J. Vidale
2018, Conference Paper
The Cascadia Subduction Zone (CSZ) produces long-duration, large-magnitude earthquakes that could severely affect structures in the Pacific Northwest (PNW). The impact of synthetic M9.0 CSZ earthquakes on buildings in the Pacific Northwest is studied using eight reinforced concrete wall archetypes that range from 4 to 40 stories. These archetypes were...
Zone identification and oil saturation prediction in a waterflooded field: Residual oil zone, East Seminole Field, Texas, Permian Basin
Jacqueline Roueche, C. Ozgen Karacan
2018, Conference Paper
Recently, the miscible CO2-EOR tertiary process used in the main pay zone (MP) of suitable reservoirs has broadened to include exploitation of the underlying residual oil zone (ROZ) where a significant amount of oil may remain. The objective of this study is to identify the ROZ and to assess...
California gull (Larus californicus) space use and timing of movements in relation to landfills and breeding colonies
Joshua T. Ackerman, Sarah H. Peterson, Danika C Tsao, John Y. Takekawa
2018, Waterbirds (41) 384-400
Expanding gull (Laridae) populations throughout the world have been attributed to the availability of anthropogenic food subsidies. The influence of landfills on California Gull (Larus californicus) space use and the timing of their movements was evaluated in San Francisco Bay, California, USA. Using radio telemetry, 108 California Gulls were tracked,...
