Seasonal epilimnetic temperature patterns and trends in a suite of lakes from Wisconsin (USA), Germany and Finland
Richard C. Lathrop, Peter Kasprzak, Marjo Tarvainen, Anne-Mari Ventela, Tapio Keskinen, Rainer Koschel, Dale M. Robertson
2019, Inland Waters (9) 471-488
Epilimnetic temperatures from the early 1980s through 2017 were analyzed for 12 Wisconsin, German and Finnish lakes. Seasonal temperature metrics exhibited large interannual variability with trends differing among regions. In the Wisconsin lakes, only late summer and fall temperatures increased significantly. In the northeastern Germany lakes, temperatures increased in all...
Spatio-temporal variability of human-fire interactions on the Navajo Nation
Christopher H. Guiterman, Ellis Q. Margolis, Christopher H. Baisan, Donald A. Falk, Craig D. Allen, Thomas W. Swetnam
2019, Ecosphere (10)
Unraveling the effects of climate and land-use on historical fire regimes provides important insights into broader human-fire-climate dynamics, which are necessary for ecologically-based forest management. We developed a spatial human land-use model for Navajo Nation forests across which we sampled a network of tree-ring fire history sites to reflect contrasting...
A statistical forecasting approach to metapopulation viability analysis
Paige E. Howell, Blake R. Hossack, Erin L. Muths, Brent Sigafus, A Chenevert-Steffler, Richard B. Chandler
2019, Ecological Applications (30)
Conservation of at‐risk species is aided by reliable forecasts of the consequences of environmental change and management actions on population viability. Forecasts from conventional population viability analysis (PVA) are made using a two‐step procedure in which parameters are estimated, or elicited from expert opinion, and then...
Simple metrics predict salt-marsh sediment fluxes
Daniel J. Nowacki, Neil K. Ganju
2019, Geophysical Research Letters (46) 12250-12257
The growth (or decay) of salt marshes depends on suspended-sediment flux into and out of the marsh. Suspended-sediment concentration (SSC) is a key element of the flux, and SSC-based metrics reflect the long-term sediment-flux trajectories of a variety of salt marshes. One metric, the flood–ebb SSC differential, correlates with area-normalized...
Variable normal-fault rupture behavior, northern Lost River fault zone, Idaho, USA
Christopher B. DuRoss, Michael P. Bunds, Ryan D. Gold, Richard W. Briggs, Nadine G. Reitman, Stephen Personius, Nathan A. Toke
2019, Geosphere (15) 1869-1892
The 1983 Mw 6.9 Borah Peak earthquake generated ∼36 km of surface rupture along the Thousand Springs and Warm Springs sections of the Lost River fault zone (LRFZ, Idaho, USA). Although the rupture is a well-studied example of multisegment surface faulting, ambiguity remains regarding the degree to which a bedrock...
Process-guided deep learning predictions of lake water temperature
Jordan S. Read, Xiaowei Jia, Jared Willard, Alison P. Appling, Jacob Aaron Zwart, Samantha K. Oliver, Anuj Karpatne, Gretchen J. A. Hansen, Paul C. Hanson, William Watkins, Michael Steinbach, Vipin Kumar
2019, Water Resources Research (55) 9173-9190
The rapid growth of data in water resources has created new opportunities to accelerate knowledge discovery with the use of advanced deep learning tools. Hybrid models that integrate theory with state‐of‐the art empirical techniques have the potential to improve predictions while remaining true to physical laws. This paper evaluates the...
Full Equations Model Graphical Data Inspector (FEQ–GDI) user guide
Jessica L. Ern, Terry Ortel, Audrey L. Ishii, Maitreyee Bera
2019, Open-File Report 2019-1113
The Full Equations Model Graphical Data Inspector (FEQ–GDI) is a menu-driven utility program that enables users to visualize and check the geometric and hydraulic properties of channel cross sections, selected control structures, and stream profiles in the input files for the Full Equations (FEQ) Model and the Full Equations Utilities...
300,000 yr history of water-table fluctuations at Wind Cave, South Dakota, USA—Scale, timing, and groundwater mixing in the Madison Aquifer
James B. Paces, Margaret V. Palmer, Arthur N. Palmer, Andrew J. Long, Matthew P. Emmons
2019, GSA Bulletin (132) 1447-1468
Deposits of calcite coating the lower passages of Wind Cave in the southern Black Hills of South Dakota were precipitated under phreatic conditions. Data from samples associated with a new cave survey and hydrologic studies indicate that past water tables within Wind Cave reached a maximum height of 45 m...
Updates to the Madison Lake (Minnesota) CE–QUAL–W2 water-quality model for assessing algal community dynamics
Erik A. Smith, Richard L. Kiesling
2019, Scientific Investigations Report 2019-5124
A previously developed CE–QUAL–W2 model for Madison Lake, Minnesota, simulated the algal community dynamics, water quality, and fish habitat suitability of Madison Lake under recent (2014) meteorological conditions. Additionally, this previously developed model simulated the complex interplay between external nutrient loading, internal nutrient loading from sediment release of phosphorus, and...
Submergence responses of cool-season annual plants and potential for fish habitat
G Coppola, Leandro E. Miranda, ME Colvin, HR Hatcher, Marcus A. Lashley
2019, North American Journal of Fisheries Management (39) 1269-1276
Unnatural water regimes of flood control reservoirs limit vegetation establishment in littoral zones and produce mudflats with low structural complexity insufficient for many juvenile fishes. One strategy to enhance habitat on mudflats is to sow cool-season plants to provide submerged structure when inundated. However, how long the structure of these...
Earthquakes, PAGER
David J. Wald, Kishor S. Jaiswal, Kristin Marano, Mike Hearne
2019, Book chapter, Encyclopedia of Solid Earth Geophysics
PAGER, short for Prompt Assessment of Global Earthquakes for Response, is an automated system developed and run by the US Geological Survey (USGS) that produces information concerning the impact of significant earthquakes around the world within approximately 20 min of any magnitude 5.5 or larger event. PAGER rapidly...
A statewide evaluation of Florida Bass genetic introgression in Tennessee
John S. Hargrove, Mark W. Rogers, P.T. Kackmar, P. Black
2019, North American Journal of Fisheries Management (39) 637-651
Largemouth Bass (Micropterus salmoides) are one of the most popular freshwater sport fish in the United States and managers in southeastern states have stocked the Florida Bass (M. s. floridanus) subspecies outside of its natural range to increase size structure of existing Largemouth Bass populations. In Tennessee, fisheries for Largemouth...
Changes in adult Chinook salmon (Oncorhynchus tshawytscha) survival within the lower Columbia River amid increasing pinniped abundance
A. Michelle Wargo Rub, Nicholas A. Som, Mark J. Henderson, Benjamin P. Sandford, Donald M. Van Doornik, David J. Teel, Matt Tennis, Olaf P. Langness, Bjorn van der Leeuw, David D. Huff
2019, Canadian Journal Fisheries and Aquatic Sciences (76) 1862-1873
Significant effort towards conservation has contributed to the recovery of historically depleted pinniped populations world-wide. However, in several locations where pinnipeds have increased, they have been blamed for preventing the recovery of commercially valuable fish species through predation. Prompted by increasing pinniped abundance within the Columbia River (CR) USA,...
Evaluation of artificial cover units as a sampling technique and habitat enhancement for madtoms in rivers
W. R. Cope, Thomas J. Kwak, T. R. Black, Krishna Pacifici
2019, North American Journal of Fisheries Management (39) 778-787
Instream habitat degradation and loss are major threats to freshwater fishes and critical conservation issues among nongame species, due to a lack of research and knowledge concerning their habitat requirements. Instream physical cover is an important component of fish habitat, especially for benthic species that require cover for reproduction and...
Effects of invasive plants on fire regimes and postfire vegetation diversity in an arid ecosystem
Emma C. Underwood, Robert C. Klinger, Matthew L. Brooks
2019, Ecology and Evolution (9) 12421-12435
We assessed the impacts of co‐occurring invasive plant species on fire regimes and postfire native communities in the Mojave Desert, western USA. We analyzed the distribution and co‐occurrence patterns of three invasive annual grasses (Bromus rubens, Bromus tectorum, and Schismus spp.) known to alter fuel conditions and community structure, and...
Multipurpose oxbows as a nitrate export reduction practice in the agricultural Midwest
Keith E. Schilling, Karen Wilke, Clay Pierce, Keegan Kult, Aleshia Kenny
2019, Agricultural & Environmental Letters (4)
Core IdeasOxbows reduce nitrate export from agricultural fields to adjacent rivers and streams.Oxbows are important habitat for wildlife, including the endangered Topeka shiner.Oxbows have largely disappeared from midwestern landscapes modified for agriculture.Restoring multipurpose oxbows provides multiple benefits in the agricultural Midwest.Nutrient export from the agricultural...
The behavior of the Salesforce Tower, the tallest building in San Francisco, California inferred from earthquake and ambient shaking
Mehmet Celebi, Hamid Haddadi, Moh Huang, Michael Valley, John Hooper, Klemencic. Ron
2019, Earthquake Spectra (35) 1711-1737
The newly constructed tallest building designed in conformance with performance-based design procedure in San Francisco, California is a 61-story building equipped with an accelerometric array that recorded the January 4, 2018 M4.4 Berkeley earthquake. The building is designed with concrete core shear walls and perimeter gravity steel...
La Niña-driven flooding in the Indo-Pacific warm pool during the past millennium
Jessica Rodysill, James M. Russell, Mathias Vuille, Sylvia Dee, Brent D. Lunghino, Satria Bijaksana
2019, Quaternary Science Reviews (225)
Extreme precipitation events are one of the most consequential components of climate change for society. The El Niño-Southern Oscillation (ENSO) is the dominant mode of precipitation variability in the tropics and causes severe flooding and drought in many socioeconomically vulnerable regions. It remains unclear how tropical rainfall extremes and ENSO...
Tidal erosion and upstream sediment trapping modulate records of land-use change in a formerly glaciated New England estuary
Justin L. Shawler, Christopher J. Hein, Elizabeth A Canuel, James M Kaste, Gregory G Fitzsimons, Ioannis Y. Georgiou, Debra A. Willard
2019, Anthropocene Coasts (2) 340-361
Land clearing, river impoundments, and other human modifications to the upland landscape and within estuarine systems can drive coastal change at local to regional scales. However, as compared with mid-latitude coasts, the impacts of human modifications along sediment-starved formerly glaciated coastal landscapes are relatively understudied. To address this...
Partly cloudy with a chance of lava flows: Forecasting volcanic eruptions in the 21st century
Michael P. Poland, Kyle R. Anderson
2019, Journal of Geophysical Research (1)
A primary goal of volcanology is forecasting hazardous eruptive activity. Despite much progress over the last century, however, volcanoes still erupt with no detected precursors, lives and livelihoods are lost to eruptive activity, and forecasting the onsets of eruptions remains fraught with uncertainty. Long‐term forecasts are generally...
Coseismic slip and early afterslip of the M6.0 August 24, 2014 South Napa, California, earthquake
Frederick Pollitz, Jessica R. Murray, Sarah E. Minson, Charles W. Wicks Jr., Jerry L. Svarc, Benjamin A. Brooks
2019, Journal of Geophysical Research (124) 11728-11747
We employ strong motion seismograms and static offsets from the Global Positioning System, Interferometric Synthetic Aperture Radar, and other measurements in order to derive a coseismic slip and afterslip model of the M6.0 24 August 2014 South Napa earthquake. This earthquake ruptured an ∼13‐km‐long portion of...
Reactive transport modeling to understand attenuation of arsenic concentrations in anoxic groundwater during Fe(II) oxidation by nitrate
Douglas B. Kent, Richard L. Smith, James Jamieson, J.K. Bohlke, Deborah A. Repert, Henning Prommer
2019, Book chapter, Environmental Arsenic in a Changing World
A previously published field-experimental investigation showed that injection of nitrate in anoxic groundwater that contained aqueous and sediment-bound Fe(II) diminished concentrations of As(V) and As(III) to below drinking-water limits. In the current study, reactive transport modeling confirmed that the observed attenuation was consistent with oxidation of Fe(II) by nitrate, leading...
A conceptual framework for the identification and characterization of lacustrine spawning habitats for native lake charr Salvelinus namaycush
Stephen Riley, J. E. Marsden, M. S. Ridgway, Christopher Konrad, Steven A. Farha, Thomas R. Binder, Trevor A. Middel, Peter C. Esselman, Charles C. Krueger
2019, Environmental Biology of Fishes (102) 1533-1557
Lake charr Salvelinus namaycush are endemic to the formerly glaciated regions of North America and spawn primarily in lakes, unlike most other Salmoninae. Spawning habitats for lake charr are thought to be characterized by relatively large substrate particle sizes which provide sufficient interstitial spaces for egg incubation, but little is...
Summary of hydrologic testing, wellbore-flow data, and expanded water-level and water-quality data, 2011–15, Fort Irwin National Training Center, San Bernardino County, California
Joseph M. Nawikas, Jill N. Densmore, David R. O'Leary, David C. Buesch, John A. Izbicki
2019, Scientific Investigations Report 2019-5091
In view of the U.S. Army’s historical reliance and plans to increase demands on groundwater to supply its operations at Fort Irwin National Training Center (NTC), California, coupled with the continuing water-level declines in some developed groundwater basins as a result of pumping, the U.S. Geological Survey (USGS), in cooperation...
Riverscape correlates for distribution of threatened spotfin chub Erimonax monachus in the Tennessee River Basin, USA
Joshuah S. Perkin, W. Keith Gibbs, Josey Lee Ridgway, S. Bradford Cook
2019, Endangered Species Research (40) 91-105
Globally, aquatic biodiversity is imperiled at an increasing rate, especially in diversity hotspots such as the southeastern USA. The spotfin chub Erimonax monachus is a federally threatened minnow with a disjunct distribution resulting from numerous impoundments on the Tennessee River and its tributaries in the heart of the southeastern USA. Recovery actions...
