Identifying shared priorities for a bioregional approach to restoration in the Northern Gulf of Mexico
Kelly G. Guilbeau, Ann C Hijuelos, Stephanie Romanach, Gregory Steyer
2022, Frontiers in Ecology and Evolution (10)
Natural resource management is often challenged with a mismatch between the scale of decision-making and the scale of the biological, ecological, and physical processes that control a system. Bioregional approaches to adaptive management have emerged as an approach to inform natural resource management at ecologically relevant scales and...
Neural net detection of seismic features related to gas hydrates and free gas accumulations on the northern U.S. Atlantic margin
Urmi Majumdar, Nathaniel C. Miller, Carolyn D. Ruppel
2022, Interpretation (10) T785-T806
Bottom-simulating reflections (BSRs) that sometimes mark the base of the gas hydrate stability zone in marine sediments are often identified based on the reverse polarity reflections that cut across stratigraphic layering in seismic amplitude data. On the northern U.S. Atlantic margin (USAM) between Cape...
Establishment of invasive Black Carp (Mylopharyngodon piceus) in the Mississippi River basin: Identifying sources and year classes contributing to recruitment
Gregory W. Whitledge, Patrick T. Kroboth, Duane Chapman, Quinton E. Phelps, Wesley Sleeper, Jennifer Bailey, Jill Jenkins
2022, Biological Invasions (24) 3885-3904
Black Carp (Mylopharyngodon piceus) was imported to the USA to control aquaculture pond snails. This species has escaped captivity and occurs in parts of the Mississippi River, several tributaries, and floodplain lakes, which is concerning due to potential competition with native fishes and predation on...
Discovery of prolactin-like in lamprey: Role in osmoregulation and new insight into the evolution of the growth hormone/prolactin family
Ningping Gong, Diogo Ferreira-Martins, Jessica L. Norstog, Stephen D. McCormick, Mark Sheridan
2022, PNAS (119)
We used a representative of one of the oldest extant vertebrate lineages (jawless fish or agnathans) to investigate the early evolution and function of the growth hormone (GH)/prolactin (PRL) family. We identified a second member of the GH/PRL family in an agnathan, the sea lamprey (Petromyzon marinus). Structural, phylogenetic, and...
Groundwater and surface-water data collection for the Walla Walla River Basin, Washington, 2018–22
Elisabeth T. Fasser, Sarah B. Dunn
2022, Data Report 1163
The semi-arid Walla Walla River Basin (WWRB) spans 1777 square miles in the states of Washington and Oregon and supports a diverse agricultural region as well as cities and rural communities that are partially reliant on groundwater. Historically, surface water and groundwater data have been collected in the WWRB...
Tapwater exposures, effects potential, and residential risk management in Northern Plains Nations
Paul M. Bradley, Kristin M. Romanok, Kelly L. Smalling, Michael J. Focazio, Robert Charboneau, Christine Marie George, Ana Navas-Acien, Marcia O'Leary, Reno Red Cloud, Tracy Zacher, Sara E. Breitmeyer, Mary C. Cardon, Christa K. Cuny, Guthrie Ducheneaux, Kendra Enright, Nicola Evans, James L. Gray, David E. Harvey, Michelle Hladik, Leslie K. Kanagy, Keith Loftin, R. Blaine McCleskey, Elizabeth Medlock-Kakaley, Shannon M. Meppelink, Joshua F. Valder, Christopher P. Weis
2022, Environmental Science and Technology Water (2) 1772-1788
In the United States (US), private-supply tapwater (TW) is rarely monitored. This data gap undermines individual/community risk-management decision-making, leading to an increased probability of unrecognized contaminant exposures in rural and remote locations that rely on private wells. We assessed point-of-use (POU) TW in three northern plains Tribal Nations, where ongoing...
Biosiliceous, organic-rich, and phosphatic facies of Triassic strata of northwest Alaska: Transect across a high-latitude, low-angle continental margin
Julie A. Dumoulin, Katherine J. Whidden, William A. Rouse, Richard O. Lease, Adam Boehlke, Paul O'Sullivan
2022, Book chapter, Understanding the Monterey Formation and similar biosiliceous units across space and time
The Shublik Formation (Middle and Upper Triassic) is a mixed siliciclastic-carbonate-phosphatic unit in northern Alaska. It generated oil found in Prudhoe Bay and other accumulations and is a prospective self-sourced resource play on Alaska’s North Slope. Its distal, deeper-water equivalent—the Otuk Formation—consists largely of radiolarian chert, mudstone, and limestone and...
Density estimation in terrestrial chelonian populations using spatial capture–recapture and search–encounter surveys
J. Andrew Royle, Haley Turner
2022, Journal of Herpetology (56) 341-348
Having an accurate estimate of population size and density is imperative to the conservation of chelonian species and a central objective of many monitoring programs. Capture–recapture and related methods are widely used to obtain information about population size of chelonians. However, classical capture–recapture methods have strict spatial sampling requirements and...
Flopy: The Python interface for MODFLOW
Andrew T. Leaf, Michael N. Fienen
2022, Groundwater (60) 710-712
No abstract available....
Seismic sources in the aleutian cradle of tsunamis
Robert C. Witter, Richard W. Briggs, Tina Dura, Simon E. Engelhart, Alan Nelson
2022, Eos, American Geophysical Union
No abstract available....
A study on the effect of site response on California seismic hazard map assessment
Molly M. Gallahue, Leah Marschall Salditch, Madeleine C. Lucas, James S. Neely, Seth Stein, Norman A. Abrahamson, Tessa Williams, Susan E. Hough
2022, Frontiers in Earth Science: Geohazards and Georisks (10)
Prior studies have repeatedly shown that probabilistic seismic hazard maps from several different countries predict higher shaking than that observed. Previous map assessments have not, however, considered the influence of site response on hazard. Seismologists have long acknowledged the influence of near-surface geology, in particular low-impedance sediment layers,...
Wind turbine wakes can impact down-wind vegetation greenness
James E. Diffendorfer, Melanie K. Vanderhoof, Zachary H. Ancona
2022, Environmental Research Letters (17)
Global wind energy has expanded 5-fold since 2010 and is predicted to expand another 8–10-fold over the next 30 years. Wakes generated by wind turbines can alter downwind microclimates and potentially downwind vegetation. However, the design of past studies has made it difficult to isolate the impact...
Insights on multistage rock avalanche behavior from runout modeling constrained by seismic inversions
Andrew Mitchell, Kate E. Allstadt, David L. George, Jordan Aaron, Scott McDougall, Jeffrey R. Moore, Brian Menounous
2022, Journal of Geophysical Research: Solid Earth (127)
Inversion of low-frequency regional seismic records to solve for a time series of bulk forces exerted on the earth by a landslide (a force-time function) is increasingly being used to infer volumes and dynamics of large, highly energetic landslides, such as rock avalanches and flowslides, and to...
Astrochronology of the Paleocene-Eocene Thermal Maximum on the Atlantic Coastal Plain
Mingsong Li, Timothy J. Bralower, Lee R. Kump, Jean Self-Trail, James C. Zachos, William D. Rush, Marci M. Robinson
2022, Nature Communications (13)
The chronology of the Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma) remains disputed, hampering complete understanding of the possible trigger mechanisms of this event. Here we present an astrochronology for the PETM carbon isotope excursion from Howards Tract, Maryland a paleoshelf environment, on the mid-Atlantic Coastal Plain. Statistical evaluation of variations in...
The effects of cheatgrass invasion on US Great Basin carbon storage depend on interactions between plant community composition, precipitation seasonality, and soil climate regime
Toby M Maxwell, Matthew J. Germino
2022, Journal of Applied Ecology (59) 2863-2873
Annual-grass invasions are transforming desert ecosystems in ways that affect ecosystem carbon (C) balance, but previous studies do not agree on the pattern, magnitude and direction of changes. A recent meta-analysis of 41 articles and 386 sites concludes that invasion by annual grasses such as cheatgrass (Bromus tectorum L) reduces...
Decision-making for managing harmful algal blooms
Jennifer L. Graham
2022, General Information Product 215
Cyanobacteria are a global water-quality concern because these organisms can develop into harmful blooms that affect ecologic, economic, and public health. U.S. Geological Survey scientists worked with the New York State Office of Parks, Recreation and Historic Preservation and the New York State Department of Environmental Conservation to develop a structured decision-making template for managing cyanobacterial harmful algal blooms. This...
Evaluating acid-aluminum stress in streams of the Northeastern U.S. at watershed, fish community and physiological scales
Benjamin J Zdasiuk, Celia Y. Chen, Stephen D. McCormick, Keith H. Nislow, Joel G Singley, John T. Kelly
2022, Ecological Indicators (144)
In spite of overall improvements in air and water quality, biological stress from low pH and high concentrations of inorganic aluminum continue to impact fish and fish habitat in northeastern North America, with independent and interactive effects on individuals, populations and communities. Integrative indicators can therefore be useful in monitoring...
Inventory of eelgrass (Zostera marina) and seaweeds at the end of the Alaska Peninsula, August–September 2012:
David H. Ward, Kyle R. Hogrefe, Tyronne F. Donnelly, Neils C. Dau, Orville Lind, Kevin J. Payne, Sandra C. Lindstrom
2022, Open-File Report 2021-1034
Coastal communities in Alaska are undergoing rapid environmental change from increasing temperatures and baseline data are needed to monitor potential impacts. We conducted the first surveys of the abundance and distribution of eelgrass (Zostera marina) and seaweeds in the western part of Izembek National Wildlife Refuge at the end of...
Eelgrass (Zostera marina) and seaweed abundance along the coast of Nunivak Island, Yukon Delta National Wildlife Refuge, Alaska, 2010
David H. Ward, Kyle R. Hogrefe, Tyrone F. Donnelly, Lucretia L. Fairchild
2022, Open-File Report 2020-1143
Eelgrass (<em>Zostera marina</em>) is a highly productive seagrass that plays an essential role in the health of the estuarine and coastal ecosystems; however, information about its abundance and distribution is insufficient in the Bering Sea along the Yukon Delta National Wildlife Refuge. We inventoried the spatial extent and abundance of...
Eelgrass (Zostera marina) and Seaweed Abundance along the Coast of Togiak National Wildlife Refuge, Alaska, 2008–10
David H. Ward, Kyle R. Hogrefe, Michael A. Swaim, Tyronne F. Donnelly, Lucretia L. Fairchild
2022, Open-File Report 2020-1114
We conducted a point-sampling survey to determine eelgrass (Zostera marina) and seaweed abundance in coastal waters adjacent to Togiak National Wildlife Refuge, Alaska, in July 2008–10. Eelgrass was known to be abundant in protected embayments of the southeastern Bering Sea and near the Togiak National Wildlife Refuge, but prior to...
Distribution of eelgrass (Zostera marina) in coastal waters adjacent to Togiak National Wildlife Refuge, Alaska
David H. Ward, Kyle R. Hogrefe, Tyronne F. Donnelly, Michael A. Swaim
2022, Open-File Report 2020-1080
Declines in the distribution and abundance of seagrasses worldwide have prompted a need for baseline distribution maps of eelgrass (Zostera marina) in Alaska. We used high-resolution digital-color aerial photography and multi-spectral satellite imagery to map the distribution and spatial extent of eelgrass at 21 sites in coastal waters adjacent...
Abundance and distribution of eelgrass (Zostera marina) and seaweeds at Izembek National Wildlife Refuge, Alaska, 2007–10
David H. Ward, Kyle R. Hogrefe, Tyronne F. Donnelly, Lucretia L. Fairchild, Kristine M. Sowl, Sandra C. Lindstrom
2022, Open-File Report 2020-1035
Eelgrass (Zostera marina) meadows are expansive along the lower Alaska Peninsula, supporting a rich diversity of marine life, yet little is known about their status and trends in the region. We tested techniques to inventory and monitor trends in the spatial extent and abundance of eelgrass in lagoons of...
Assessment of undiscovered conventional oil and gas resources of New Guinea, Papua Barat, Seram, and Timor-Leste, 2020
Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Geoffrey S. Ellis, Cheryl A. Woodall, Phuong A. Le, Heidi M. Leathers-Miller, Ronald M. Drake II
2022, Fact Sheet 2022-3046
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered resource means of 1.8 billion barrels of oil and 129.5 trillion cubic feet of gas within New Guinea, Papua Barat, Seram, and Timor-Leste....
A century of drought in Hawai‘i: Geospatial analysis and synthesis across hydrological, ecological, and socioeconomic scales
Abby G. Frazier, Christian P. Giardina, Thomas W Giambelluca, Laura Brewington, Yi-Leng Chen, Pao-Shin Chu, Lucas Fortini, David Helweg, Victoria W. Keener, Ryan J Longman, Matthew P Lucas, Alan Mair, Delwyn S. Oki, Julian J Reyes, Stephanie G. Yelenik, Clay Trauernicht
2022, Sustainability (14)
Drought is a prominent feature of Hawaiʻi’s climate. However, it has been over 30 years since the last comprehensive meteorological drought analysis, and recent drying trends have emphasized the need to better understand drought dynamics and multi-sector effects in Hawaiʻi. Here, we provide a comprehensive synthesis of...
Oxygenation of a karst subterranean estuary during a tropical cyclone: Mechanisms and implications for the carbon cycle
David Brankovits, John Pohlman, Laura Lapham
2022, Limnology & Oceanography (67) 2691-2705
Seasonal precipitation affects carbon turnover and methane accumulation in karst subterranean estuaries, the region of coastal carbonate aquifers where hydrologic and biogeochemical processes regulate material exchange between the land and ocean. However, the impact that tropical cyclones exert on subsurface carbon cycling within karst landscapes is...
