Consequences of ignoring spatial variation in population trend when conducting a power analysis
Emily L. Weiser, James E. Diffendorfer, Laura Lopez-Hoffman, Darius J. Semmens, Wayne E. Thogmartin
2019, Ecography (42) 836-844
Long-term, large-scale monitoring programs are becoming increasingly common to document status and trends of wild populations. A successful program for monitoring population trend hinges on the ability to detect the trend of interest. Power analyses are useful for quantifying the sample size needed for trend detection, given expected variation in...
Lead in piscivorous raptors during breeding season in the Chesapeake Bay region of Maryland and Virginia, USA
Vincent A. Slabe, James T. Anderson, Jeff Cooper, Bracken Brown, Patricia Ortiz, John Buchweitz, Dave McRuer, Todd E. Katzner
2019, Environmental Toxicology and Chemistry (38) 862-871
Sources of lead exposure of many bird species are poorly understood. We analyzed blood lead concentrations from osprey (n = 244; Pandion haliaetus) and bald eagles (n = 68; Haliaeetus leucocephalus) and documented potential sources of lead they may encounter. Adult bald eagles had higher blood lead concentrations than did...
AVO-G2S: A modified, open-source Ground-to-Space atmospheric specification for infrasound modeling
Hans Schwaiger, Alexandra M. Iezzi, David Fee
2019, Computers & Geosciences (125) 90-97
To facilitate infrasound propagation studies, we present AVO-G2S, an open-source, Ground-to-Space model which provides temperature and wind specifications from the surface to an altitude of 225 km. This model provides a means of smoothly characterizing atmospheric conditions using multiple numerical weather prediction forecast and reanalysis products, along with upper-atmospheric...
Assessing seasonal changes in microgravity at Yellowstone caldera
Michael P. Poland, Elske de Zeeuw-van Dalfsen
2019, Journal of Geophysical Research (124) 4174-4188
Microgravity time series at active volcanoes can provide an indication of mass change related to subsurface magmatic processes, but uncertainty is often introduced by hydrologic variations and other noise sources that cannot easily be isolated. We empirically assessed seasonality and noise by conducting four surveys over the course of...
Simulating the effects of climate variability on waterbodies and wetland-dependent birds in the Prairie Pothole Region
N.E. Mcintyre, G. Liu, J. Gorzo, C.K. Wright, Glenn R. Guntenspergen, F. Schwartz
2019, Ecosphere (10) 1-18
Understanding how bird populations respond to changes in waterbody availability in the climatically variable Prairie Pothole Region (PPR) of North America hinges on being able to couple hydrological and climate modeling to represent potential future landscapes. Model experiments run with the Pothole Complex Hydrologic Model using...
Investigation of recent decadal-scale cyclical fluctuations in salinity in the lower Colorado river
Fred D. Tillman, Alissa L. Coes, David W. Anning, Jon P. Mason, Tyler B. Coplen
2019, Journal of Environmental Management 442-452
Beginning in the late 1970s, 10- to 15-year cyclical oscillations in salinity were observed at lower Colorado River monitoring sites, moving upstream from the international border with Mexico, above Imperial Dam, below Hoover Dam, and at Lees Ferry. The cause of these cyclical...
Patterns of primary production and ecological drought in Yellowstone
David P. Thoma, Seth Munson, Ann W. Rodman, Roy Renkin, Heidi M. Anderson, Stephanie D. Wacker
2019, Yellowstone Science (27) 34-39
Introduction: Photosynthesis converts sunlight into stored energy in millions of leaves, flowers and seeds that maintain the web of life in Yellowstone. This transformation of energy fixes carbon, supplies organic matter to soils, and can become fuel for wildfire. As the first link of the food chain, new plant...
Research, monitoring, and evaluation of emerging issues and measures to recover the Snake River fall Chinook Salmon ESU
Kenneth Tiffan, Russell Perry, John Plumb, Dalton Hance, Brad Bickford, Tobyn Rhodes
2019, Report
The portion of the Snake River fall Chinook Salmon Oncorhynchus tshawytscha ESU that spawns upstream of Lower Granite Dam transitioned from low to high abundance during 1992–2018 in association with U.S. Endangered Species Act recovery efforts and other federally mandated actions. This annual report focuses on (1) numeric and habitat...
2018 Status of the Lake Ontario lower trophic levels
Kristen T. Holeck, Lars G. Rudstam, Christopher Hotaling, Dave Lemon, Web Pearsall, Jana Lantry, Mike Connerton, Chris Legard, Steve LaPan, Zy Biesinger, Brian F. Lantry, Brian Weidel
2019, Book chapter, 2018 Annual report Bureau of Fisheries Lake Ontario Unit and St. Lawrence River Unit to the Great Lakes Fishery Commission’s Lake Ontario Committee
Significant Findings for Year 2018: 1) Offshore spring total phosphorus (TP) in 2018 was 7.0 µg/L; values have remained stable since 2001. Offshore soluble reactive phosphorus (SRP) remained low (1.3 µg/L) in 2018; Apr/May – Oct mean values have been stable in nearshore and offshore habitats since 1998 (range, 0.4...
Prey fish
Jeremy Holden, Brian Weidel, Michael J. Connerton
2019, Book chapter, Lake Ontario fish communities and fisheries: 2018 annual report of the Lake Ontario Management Unit
No abstract available....
Geology of the Mineral and Lake Anna West Quadrangles, Virginia
Mark W. Carter, William C. Burton, Ryan J. McAleer, Mary DiGiacomo-Cohen, R. Tyler Sauer
2019, Virginia Division of Geology and Mineral Resources Publication 189
This map product is a cooperator series publication and, as such, does not have a specific abstract. Geologic mapping for this map product was completed between 2014 and 2017, with most of the field work occurring between January 2016 and May 2017. Numerous foot traverses were completed along creeks and roads...
Groundwater Conditions in Utah, Spring of 2018
Lincoln Smith, Adam S. Birken, Phillip H. Klebba, Katherine K. Jones, V. Noah Derrick, Paul Downhour, Robert J. Eacret, Travis L. Gibson, Bradley A. Slaugh, Nickolas R. Whittier, Brandon P. Douglas, Douglas V. LaBonte, Martel J. Fisher
2019, Report
This is the fifty-fifth in a series of annual reports that describe groundwater conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Department of Natural Resources, Division of Water Rights, and the Utah Department of Environmental Quality, Division of Water Quality, provide data to enable interested parties to...
Windows to the deep 2018: Exploration of the southeast US Continental margin
Leslie R Sautter, Cheryl L. Morrison, Kasey Cantwell, Derek Sowers, Elizabeth Lobecker
2019, Oceanography (32) 82-87
Windows to the Deep 2018: Exploration of the Southeast US Continental Margin was a 36-day expedition aboard NOAA Ship Okeanos Explorer to acquire data on priority exploration areas identified by the ocean management and scientific communities. This expedition involved high-resolution multibeam sonar mapping and ROV dives, ranging from 340 m...
Seasonal fluxes of dissolved nutrients in streams of catchments dominated by swidden agriculture in the Maya Forest of Belize, Central America
David G. Buck, Peter C. Esselman, Shiguo Jiang, Joel D. Wainwright, Mark Brenner, Matthew J. Cohen
2019, Water (11)
The biogeochemistry of nitrogen (N) and phosphorus (P) in tropical streams and rivers is strongly regulated by the pronounced seasonality of rainfall and associated changes in hydrology. Land use and land cover change (LULCC) can also be a dominant driver of changes in stream biogeochemistry yet responses are not fully...
Assessing rangeland health under climate variability and change
John B. Bradford, Michael C. Duniway, Seth M. Munson
2019, Book chapter, Grasslands and climate change
RANGELAND HEALTH IN A CHANGING WORLD Rangeland health is an integrated metric that describes a complex suite of ecosystem properties and processes as applied to resource management. While the concept of “healthy” landscapes has a long history, the term “rangeland health” was codified in the US in 1994 as part...
Effects of high-flow experiments on other resources: Recreation and hydropower
Lucas S. Bair
2019, Conference Paper, High-Flow Experiments Assessment Extended Abstracts
Glen Canyon National Recreation Area (GCNRA) and Grand Canyon National Park (GCNP) offer unique recreational opportunities. An objective in the Long-Term Experimental and Management Plan Environmental Impact Statement (LTEMP EIS) is to maintain and improve the quality of recreational experiences (U.S. Department of the Interior, 2016). Some of the higher...
Sandbar deposition caused by high-flow experiments on the Colorado River downstream from Glen Canyon Dam: November 2012 – November 2018
Paul E. Grams
2019, Conference Paper, High-Flow Experiments Assessment Extended Abstracts
The streamflow regime and sand supply of the Colorado River have been affected by the presence and operations of Glen Canyon Dam since filling of Lake Powell began in March 1963. Consequent changes in river morphology have included decreases in the size and abundance of sandbars used as campsites in...
Effects of high flow experiments on riparian vegetation resources in Grand Canyon
B.J. Butterfield, Emily C. Palmquist, Joel B. Sankey
2019, Conference Paper, High-Flow Experiments Assessment Extended Abstracts
Flood events have historically had a strong impact on riparian vegetation within Grand Canyon. Pre-dam sandbars were nearly devoid of perennial riparian vegetation due to the magnitude and frequency of periodic floods (Turner and Karpiscak, 1980). Vegetation has increased since dam closure (Waring, 1995), particularly since the early 1990s (Sankey...
Polychlorinated biphenyls (PCBs) in the Pacific sand lance, Puget Sound, Washington
Theresa Liedtke, Kathleen Conn, Richard Dinicola, Renee Takesue
2019, Conference Paper, 2018 Salish Sea Toxics Monitoring Synthesis
Forage fish are small, abundant, schooling planktivores that form a critical link in marine food webs by transferring energy from plankton up to birds, fishes, and marine mammals. Forage fishes in Puget Sound include the iconic Pacific herring as well as lesser known species such as surf smelt and...
High elevation sand/cultural Sites: The response of source-bordering aeolian dunefields to the 2012-2016 high flow experiments of the Colorado River in Grand Canyon (Extended Abstract)
Joel B. Sankey
2019, Conference Paper, High-Flow Experiments Assessment Extended Abstracts
Glen Canyon Dam has reduced downstream sediment supply to the Colorado River by about 95% in the reach upstream of the Little Colorado River confluence and by about 85% below the confluence (Topping and others, 2000). Operation of the dam for hydropower generation has additionally altered the flow regime of the river in...
Optimal timing of high-flow experiments for sandbar deposition
David J. Topping, Paul E. Grams, Ronald E. Griffiths, Joseph E. Hazel Jr., Matthew Kaplinski, David J. Dean, Nicholas Voichick, Joel A. Unema, Thomas A. Sabol
2019, Conference Paper, High-Flow Experiments Assessment Extended Abstracts
Sediment-transport theory and field measurements indicate that the greatest or most efficient deposition of sand in eddies occurs during controlled floods (a.k.a. High-Flow Experiments or HFEs) when the greatest amount of the finest sand is available on the bed of the Colorado River (Topping and others, 2010). Conducting HFEs when...
Results from the Department of the Interior Strategic Sciences Group Technical Support for the 2018 Kīlauea Eruption
K. A. Ludwig, Alice Pennaz, Aleeza Wilkins
2019, Report
On May 3, 2018 Hawai'i’s Kīlauea volcano erupted, ultimately covering 35 square kilometers (13.5 square miles) of land in lava, destroying over 700 homes in multiple subdivisions, and displacing over 2500 residents in the Puna District on the southeast flank of the volcano. Simultaneously, Kīlauea’s summit experienced its largest collapse...
A revised continuous surface elevation model for modeling
Rueen-Fang Wang, Eli Ateljevich, Theresa A. Fregoso, Bruce E. Jaffe
2019, Book chapter, Methodology for flow and salinity estimates in the Sacramento-San Joaquin Delta and Suisun Marsh, 39th Annual Progress Report to the State Water Resources Control Board
A digital elevation model (DEM) is an essential component of any hydrodynamic model. The Delta Modeling Section (Section) has maintained a database of bathymetry soundings and levee surveys for decades and published a 10-meter (10m) DEM for the San Francisco Bay and Sacramento-San Joaquin Delta (Delta) (California Department of Water...
Changes in body condition and diet of lotic Smallmouth Bass across two flow regimes during summer months at the southern extent of their native range
Christopher R. Middaugh, Daniel D. Magoulick
2019, American Fisheries Society Symposium (87) 93-110
The Ozark Plateau is located at the southern extent of native Smallmouth Bass Micropterus dolomieu range and water temperature and drought conditions during summer months may potentially affect growth of Smallmouth Bass in this region. Groundwater streams in the region do not warm to the same extent as runoff streams...
Estimating indirect impacts of wind-energy development for breeding grassland birds and waterfowl in the northern Great Plains
Jill A. Shaffer, Charles R. Loesch, Deborah A. Buhl
2019, Conference Paper, Proceedings of the Wind Wildlife Research Meeting XII
No abstract available....
