Interpreting and reporting 40Ar/39Ar geochronologic data
Allen J. Schaen, Brian R. Jicha, Kip V. Hodges, Pieter Vermeesch, Mark E. Stelten, Cameron M. Mercer, David Phillips, Tiffany Rivera, Fred Jourdan, Erin L. Matchan, Sidney R. Hemming, Leah E. Morgan, Simon P. Kelley, William S. Cassata, Matt T. Heizler, Paulo M. Vasconcelos, Jeff A. Benowitz, Anthony A.P. Koppers, Darren F. Mark, Elizabeth M. Niespolo, Courtney J. Sprain, William E. Hames, Klaudia F. Kuiper, Brent D. Turrin, Paul R. Renne, Jake Ross, Sebastian Nomade, Herve Guillou, Laura E. Webb, Barbara A. Cohen, Andrew T. Calvert, Nancy Joyce, Morgan Ganderod, Jan Wijbrans, Osamu Ishizuka, Huaiyu He, Adan Ramirez, Jorg Pfander, Margarita Lopez-Martinez, Huaning Qiu, Brad S. Singer
2021, GSA Bulletin (133) 461-487
The 40Ar/39Ar dating method is among the most versatile of geochronometers, having the potential to date a broad variety of K-bearing materials spanning from the time of Earth’s formation into the historical realm. Measurements using modern noble-gas mass spectrometers are now producing 40Ar/39Ar dates with analytical uncertainties of ∼0.1%, thereby...
Sediment budget estimates for a highly impacted embayment with extensive wetland loss
Robert Chant, David K. Ralston, Neil K. Ganju, Casia Pianca, Amy Simonson, Richard Cartwright
2021, Estuaries and Coasts (44) 608-626
External sediment supply is an important control on wetland morphology and vulnerability to storms, sea-level rise, and land use change. Constraining sediment supply and net budgets is difficult due to multiple timescales of variability in hydrodynamic forcing and suspended-sediment concentrations, as well as the fundamental limitations of measurement and modeling...
Estimating age and growth of invasive sea lamprey: A review of approaches and investigation of a new method
Heather A Dawson, Courtney Higgins-Weier, Todd B. Steeves, Nicholas S. Johnson
2021, Journal of Great Lakes Research (47) S570-S579
We review recent advances in age and growth estimation of invasive sea lamprey (Petromyzon marinus) in the Great Lakes and present a more accurate method for growth estimation. To forecast growth and prioritize streams for control actions, sea lamprey managers currently...
Modeling groundwater inflow to the new crater lake at Kīlauea Volcano, Hawaiʻi
Steven E. Ingebritsen, Ashton F. Flinders, James P. Kauahikaua, Paul A. Hsieh
2021, Groundwater (59) 7-15
During the 2018 eruption of Kīlauea Volcano, Hawai'i, scientists relied heavily on a conceptual model of explosive eruptions triggered when lava‐lake levels drop below the water table. Numerical modeling of multiphase groundwater flow and heat transport revealed that, contrary to expectations, liquid water inflow to the...
Source switching maintains dissolved organic matter chemostasis across discharge levels in a large temperate river network
J.D. Hosen, K.S. Aho, Jennifer H. Fair, E.D. Kyzivat, S. Matt, Jonathan Morrison, A. Stubbins, L.C. Weber, B. Yoon, P.A. Raymond
2021, Ecosystems (24) 227-247
Dissolved organic matter (DOM) helps regulate aquatic ecosystem structure and function. In small streams, DOM concentrations are controlled by transport of terrestrial materials to waterways, and are thus highly variable. As rivers become larger, the River Continuum Concept hypothesizes that internal primary production is an increasingly...
Riverbank stability assessment of lower Osage River during hydro-peak flow events: The lower Osage River case (Missouri, USA)
Wesam Mohammed-Ali, Cesar Mendoza, Robert R. Holmes Jr.
2021, International Journal of River Basin Management (19) 335-343
The fluctuation of water level downstream from dams due to hydropower flow releases can negatively affect riverbank stability. This research aims to investigate riverbank instability resulting from the outflow variation of hydropower plants, using Bagnell Dam and the lower Osage River (Missouri, USA) as the basis of analysis. The effects...
Adult sea lamprey respond to induced turbulence in a low current system
Daniel P. Zielinski, Scott M. Miehls, Gordon Burns, Charles Coutant
2021, Journal of Ecohydraulics (6) 82-90
Manipulation of water velocities and turbulence using pumps, propellers, or jets is a promising alternative to physical water control structures to guide fish towards traps or fishways. Sea lamprey (Petromyzon marinus) are a species of concern in much of their native and invasive ranges, and their improved guidance could benefit...
Eradication of sea lampreys from the Laurentian Great Lakes is possible
Michael L. Jones, Jean V. Adams
2021, Journal of Great Lakes Research (47) S776-S781
Eradication has been achieved for many vertebrate pest control programs, primarily on small, isolated islands, but has never been considered a practical goal for invasive sea lampreys in the Laurentian Great Lakes. Our objective was to examine evidence relevant to the feasibility of setting eradication as a management goal for Great Lakes...
Assessment of NMR logging for estimating hydraulic conductivity in glacial aquifers
Alexander K. Kendrick, Rosemary Knight, Carole D. Johnson, Gaisheng Liu, Steven Knobbe, Randall J. Hunt, James J. Butler
2021, Groundwater (59) 31-48
Glacial aquifers are an important source of groundwater in the United States and require accurate characterization to make informed management decisions. One parameter that is crucial for understanding the movement of groundwater is hydraulic conductivity, K. Nuclear magnetic resonance (NMR) logging measures the NMR response associated with...
Detrital zircon age spectra of middle and upper Eocene outcrop belts, U.S. Gulf Coast region
William H. Craddock, James L. Coleman Jr., Andrew R.C. Kylander-Clark
2021, Basin Research (33) 250-269
Recently reported detrital zircon (DZ) data help to associate the Paleogene strata of the Gulf of Mexico region to various provenance areas. By far, recent work has emphasised upper Paleocene-lower Eocene and upper Oligocene strata that were deposited during the two episodes of the highest sediment...
A Lagrangian particle-tracking approach to modelling larval drift in rivers
Richard R. McDonald, Jonathan M. Nelson
2021, Journal of Ecohydraulics (6) 17-35
The migration of larval fish from spawning to rearing habitat in rivers is not well understood. This paper describes a methodology to predict larval drift using a Lagrangian particle-tracking (LPT) model with passive and active behavioural components loosely coupled to a quasi-three-dimensional hydraulic model. In the absence of measured larval...
Factors influencing Cinnamon Teal nest attendance patterns
Casey M. Setash, William L. Kendall, David Olson
2021, Ibis (163) 125-136
Patterns of nest attendance in birds result from complex behaviours and influence the success of reproductive events. Incubation behaviours vary based on individual body condition, energy requirements and environmental factors. We assessed nest attendance patterns in Cinnamon Teal Spatula cyanoptera breeding in the San Luis Valley of Colorado...
Quantifying and mapping inundation regimes within a large river‐floodplain ecosystem for ecological and management applications
Molly Van Appledorn, Nathan R. De Jager, Jason J. Rohweder
2021, River Research and Applications (37) 241-255
Spatial information on the distribution of ecosystem patterns and processes can be a critical component of designing and implementing effective management programs in river‐floodplain ecosystems. For example, translating how flood pulses detected within a stream gauge record are spatially manifested across a river‐valley bottom can be used to evaluate whether...
Using decision analysis to collaboratively respond to invasive species threats: A case study of Lake Erie grass carp (Ctenopharyngodon idella)
Kelly F. Robinson, Mark R. DuFour, Michael Jones, Seth Herbst, Tammy Newcomb, James C. Boase, Travis O. Brenden, Duane Chapman, John M. Dettmers, James Francis, Travis Hartman, Patrick Kocovsky, Brian Locke, Jeff Tyson, Christine Mayer
2021, Journal of Great Lakes Research (47) 108-119
Decisions about invasive species control and eradication can be difficult because of uncertainty in population demographics, movement ecology, and effectiveness of potential response actions. These decisions often include multiple stakeholders and management entities with potentially different objectives, management priorities, and jurisdictional authority. We provide a case study of using multi-party,...
Carbon stock losses and recovery observed for a mangrove ecosystem following a major hurricane in Southwest Florida
Elitsa I. Peneva-Reed, Ken Krauss, Eric L. Bullock, Zhiliang Zhu, Victoria Woltz, Judith Z. Drexler, Jeremy R. Conrad, Stephen V. Stehman
2021, Estuarine, Coastal and Shelf Science (248)
Studies integrating mangrove in-situ observations and remote sensing analysis for specific sites often lack precise estimates of carbon stocks over time frames that include disturbance events. This study quantifies change in mangrove area from 1985 to 2018 with Landsat time series analysis, estimates above and belowground stored carbon using field data, and...
Geomorphological mapping and anthropogenic landform change in an urbanizing watershed using structure-from-motion photogrammetry and geospatial modeling techniques
Peter G. Chirico, Sarah E. Bergstresser, Jessica D. DeWitt, Marissa Ann Alessi
2021, Journal of Maps (17) 241-252
Increasing urbanization and suburban growth in cities globally has highlighted the importance of land planning using detailed geomorphologic maps that depict anthropogenic landform changes. Such mapping provides information crucial for land management, hazard identification, and the management of the challenges arising from urbanization. The development and use...
Scientific contributions of the Mangrove Macrobenthos and Management (MMM) conference series, 2000-2019
Daniel A. Friess, Farid Dahdouh-Guebas, Behara Satyanarayana, Stefano Cannicci, Marco Vannini, Siew Chin Chua, Norman Duke, Ilka C. Feller, Zeehan Jaafer, L.P. Jayatissa, Nico Koedam, Ken Krauss, Shing Yip Lee, Jose Ernesto Mancera Pineda, Renison Ruwa, Erik S. Yando
2021, Estuarine, Coastal and Shelf Science (248)
The conservation of mangrove forests has become an important international policy priority in recent decades, and is mirrored by a large increase in research interest. Multiple disciplines now use mangroves as a study system, from molecular biology to social science. The variety of research conducted in mangroves is exemplified by...
Fish diversity, endemism, threats, and conservation in the Jinsha River basin (upper Yangtze River), China
H. W. Liu, C. Guo, X. Qu, F. Xiong, Craig P. Paukert, Y. Chen, W. Sullivan
2021, North American Journal of Fisheries Management (41) 967-984
The Jinsha River, which comprises the upper reaches of the Yangtze River, has among the highest freshwater fish biodiversity and endemism in China, but these characteristics have rarely been quantitatively evaluated at the basin scale. We used fish presence–absence data collected from the entire Jinsha River basin (JRB) from 1964...
Units recovery methods in compositional data analysis
J. A Martin-Fernandez, Juan Jose Egozcue, Ricardo A. Olea, Vera Pawlowsky-Glahn
2021, Natural Resources Research (30) 3045-3058
Compositional data carry relative information. Hence, their statistical analysis has to be performed on coordinates with respect to a log-ratio basis. Frequently, the modeler is required to back-transform the estimates obtained with the modeling to have them in the original units such as euros, kg or...
Emerging and historical contaminants detected in desert rodents collected near a low‐level radioactive waste site
Ryan S. Cleary, Adcharee Karnjanapiboonwong, William A. Thompson, Steven J. Lasee, Seenivasan Sabbiah, Ronald Kauble, Brian J. Andraski, Todd A. Anderson
2021, Environmental Toxicology and Chemistry (40) 727-734
In an effort to determine contaminant presence, concentrations, and movement from a low‐level radioactive waste (LLRW) burial disposal site to ecosystems in the surrounding area, a study was developed to assess concentrations of per‐ and polyfluoroalkyl substances (PFAS), polychlorinated biphenyls (PCBs), and tritium. To complete this...
Effects of latitude, season, and temperature on Lake Sturgeon movement
Michael J. Moore, Craig P. Paukert, T. Moore
2021, North American Journal of Fisheries Management (41) 916-928
Ecologists have a limited understanding of the rangewide variation in movement behavior in freshwater fishes, but recent expansion of biotelemetry allows biologists to investigate how fish movement can help to predict behavioral shifts in response to changing environments. The Lake Sturgeon Acipenser fulvescens is a wide-ranging, migratory, coolwater species, making it a...
Erosion and recovery: Sound-side inundation of Cape Lookout National Seashore during Hurricane Dorian
Christopher R. Sherwood
2021, Newsletter
Hurricane Dorian tracked immediately offshore of Cape Lookout National Seashore (which includes the barrier islands of North and South Core Banks) and Ocracoke Island after devastating the Bahamas in early September, 2019. Dorian briefly made landfall at Cape Hatteras as a Category 1 hurricane on September 6 before moving northeast...
Limitations, lack of standardization, and recommended best practices in studies of renewable energy effects on birds and bats
Tara Conkling, S. R. Loss, James E. Diffendorfer, A. Duerr, Todd E. Katzner
2021, Conservation Biology (35) 64-76
Increasing global energy demand is fostering the development of renewable energy as an alternative to fossil fuels. However, renewable energy facilities may adversely affect wildlife. Facility siting guidelines recommend or require project developers complete pre‐ and postconstruction wildlife surveys to predict risk and estimate effects of proposed projects. Despite this,...
Two-event genesis of Butte lode veins: Geologic and geochronologic evidence from ore veins, dikes, and host plutons
Karen Lund, Ryan J. McAleer, John N. Aleinikoff, Michael Cosca
2021, Conference Paper, Proceedings of the Montana Mining and Mineral Symposium 2019
The long-standing ore-genesis model for world-class deposits of the Butte mining district, Montana, is of deep pre-Main Stage porphyry Cu-Mo and overlying Main Stage Ag-Zn-Cu-zoned lode veinsformed from discrete hydrothermal systems related to rhyolite dikes. The lode-specific model describes metals zones that formed in the lode veins as hydrothermal processes...
Making Recursive Bayesian inference accessible
Mevin Hooten, Devin S. Johnson, Brian M. Brost
2021, American Statistician (75) 185-194
Bayesian models provide recursive inference naturally because they can formally reconcile new data and existing scientific information. However, popular use of Bayesian methods often avoids priors that are based on exact posterior distributions resulting from former studies. Two existing Recursive Bayesian methods are: Prior- and Proposal-Recursive Bayes. Prior-Recursive Bayes uses Bayesian updating, fitting...
