The structure and volume of large geysers in Yellowstone National Park, USA and the mineralogy and chemistry of their silica sinter deposits
Dakota Churchill, Michael Manga, Shaul Hurwitz, Sara Peek, David Damby, Richard Conrey, John R. Wood, R. Blaine McCleskey, William E. Keller, Behnaz Hosseini, Jefferson D.G. Hungerford
2021, Journal of Volcanology and Geothermal Research (419)
Siliceous sinter is formed by biogenic and abiogenic opal deposition around hot springs and geysers. Using Structure-from-Motion photogrammetry we generated three-dimensional models of Giant and Castle Geysers from the Upper Geyser Basin of Yellowstone National Park. We use these models to calculate...
Improvements to the Third Uniform California Earthquake Rupture Forecast ETAS Model (UCERF3‐ETAS)
Edward H. Field, Kevin R. Milner, Morgan T. Page, William H. Savran, Nicholas van der Elst
2021, The Seismic Record (1) 117-125
We describe recent improvements to the Third Uniform California Earthquake Rupture Forecast ETAS Model (UCERF3‐ETAS), which continues to represent our most advanced and complete earthquake forecast in terms of relaxing segmentation assumptions and representing multifault ruptures, elastic‐rebound effects, and spatiotemporal clustering (the latter to...
Estimating and forecasting time-varying groundwater recharge in fractured rock: A state-space formulation with preferential and diffuse flow to the water table
Allen M. Shapiro, Frederick Day-Lewis
2021, Water Resources Research (57)
Rapid infiltration following precipitation may result in groundwater contamination from surface contaminants or pathogens. In fractured rock, contaminants can migrate rapidly to points of groundwater withdrawals. In contrast to the temporal availability of groundwater quality chemical indicators, meteorological and groundwater level observations are available in real-time to estimate time-varying recharge,...
Global drivers of avian haemosporidian infections vary across zoogeographical regions
Alan Fecchio, Nicholas J. Clark, Jeffrey A Bell, Heather Skeen, Holly L Lutz, Gabriel M De La Torre, Jefferson A Vaughan, Vasyl V. Tkach, Fabio Schunck, Francisco C Ferreira, Erika M Braga, Camile Lugarini, Wanyoike Wamiti, Janice H Dispoto, Spencer C Galen, Karin Kirchgatter, M. Cecilia Sagario, Victor R Cueto, Daniel Gonzalez-Acuna, Mizue Inumaru, Yukita Sato, Yvonne R. Schumm, Petra Quillfeldt, Irene Pellegrino, Guha Dharmarajan, Pooja Gupta, V. V. Robin, Arif Ciloglu, Alparslan Yildirim, Xi Huang, Leonardo Chapa-Vargas, Paulina Alvarez-Mendizabal, Diego Santiago-Alarcon, Sergei V. Drovetski, Olof Hellgren, Gary Voelker, Robert E Ricklefs, Shannon Hackett, Michael D Collins, Jason D Weckstein, Konstans Wells
Pauline Kamath, editor(s)
2021, Global Ecology and Biogeography (30) 2393-2406
Aim: Macroecological analyses provide valuable insights into factors that influence how parasites are distributed across space and among hosts. Amid large uncertainties that arise when generalizing from local and regional findings, hierarchical approaches applied to global datasets are required to determine whether drivers of parasite infection patterns vary across scales....
Hotspot dune erosion on an intermediate beach
Nicholas Cohn, Katherine Brodie, Bradley Johnson, Margaret L. Palmsten
2021, Coastal Engineering (170)
A large, low pressure Nor’easter storm and Hurricane Joaquin contributed to multiple weeks of sustained, elevated wave and water level conditions along the southeastern Atlantic coast of the United States in Fall 2015. Sea level anomalies in excess of 1 m and...
Detrital signals of coastal erosion and fluvial sediment supply during glacio-eustatic sea-level rise, Southern California, USA
Glenn R. Sharman, Jacob A Covault, Daniel F. Stockli, Zack Sickmann, Matthew A. Malkowski, Samuel Johnstone
2021, Geology (49) 1501-1505
Coastal erosion, including sea-cliff retreat, represents both an important component of some sediment budgets and a significant threat to coastal communities in the face of rising sea level. Despite the importance of predicting future rates of coastal erosion, few prehistoric constraints exist on the relative...
Advancing cave detection using terrain analysis and thermal imagery
J. Judson Wynne, Jeff Jenness, Derek Sonderegger, Timothy N. Titus, Murzy D. Jhabvala, Nathalie A. Cabrol
2021, Remote Sensing (13)
Since the initial experiments nearly 50 years ago, techniques for detecting caves using airborne and spacecraft acquired thermal imagery have improved markedly. These advances are largely due to a combination of higher instrument sensitivity, modern computing systems, and processor-intensive analytical techniques. Through applying these advancements, our goals...
Digital elevation models: Terminology and definitions
Peter L. Guth, Adriaan Van Niekerk, Carlos H. Grohmann, Jan-Peter Muller, Laurence Hawker, Igor V. Florinsky, Dean B. Gesch, Hannes I. Reuter, Virginia Herrera-Cruz, Serge Riazanoff, Carlos Lopez-Vazquez, Claudia C. Carabajal, Clement Albinet, Peter Strobl
2021, Remote Sensing (13)
Digital elevation models (DEMs) provide fundamental depictions of the three-dimensional shape of the Earth’s surface and are useful to a wide range of disciplines. Ideally, DEMs record the interface between the atmosphere and the lithosphere using a discrete two-dimensional grid, with complexities introduced by the intervening hydrosphere,...
The application of metacommunity theory to the management of riverine ecosystems
Christopher J. Patrick, Kurt E. Anderson, Brown L. Brown, Charles P. Hawkins, Anya N. Metcalfe, Parsa Saffarinia, Tadeu Siqueira, Christopher M. Swan, Jonathan D. Tonkin, Lester L. Yuan
2021, WIREs Water (8)
River managers strive to use the best available science to sustain biodiversity and ecosystem function. To achieve this goal requires consideration of processes at different scales. Metacommunity theory describes how multiple species from different communities potentially interact with local-scale environmental drivers to influence population dynamics and community structure. However, this...
A machine learning approach to modeling streamflow with sparse data in ungaged watersheds on the Wyoming Range, Wyoming, 2012–17
Ryan R. McShane, Cheryl A. Eddy-Miller
2021, Scientific Investigations Report 2021-5093
Scant availability of streamflow data can impede the utility of streamflow as a variable in ecological models of aquatic and terrestrial species, especially when studying small streams in watersheds that lack streamgages. Streamflow data at fine resolution and broad extent were needed by collaborators for ecological research on small streams...
Intraspecific variation mediates density dependence in a genetically diverse plant species
Andrii Zaiats, Matthew J. Germino, Marcelo D. Serpe, Bryce Richardson, Trevor Caughlin
2021, Ecology (102)
Interactions between neighboring plants are critical for biodiversity maintenance in plant populations and communities. Intraspecific trait variation and genome duplication are common in plant species and can drive eco-evolutionary dynamics through genotype-mediated plant–plant interactions. However, few studies have examined how species-wide intraspecific variation may alter interactions between neighboring plants. We...
Integrating socioecological suitability with human-wildlife conflict risk: Case study for translocation of a large ungulate
Nicholas P. McCann, Eric M. Walberg, James D. Forester, Michael W. Schrage, David C. Fulton, Mark A. Ditmer
2021, Journal of Applied Ecology (58) 2810-2820
Translocations are essential for re-establishing wildlife populations. As they sometimes fail, it is critical to assess factors that influence their success pre-translocation.Socioecological suitability models (SESMs) integrate social acceptance and ecological suitability to enable identification of areas where wildlife populations will expand, which makes it likely that SESMs will also...
Improved scaling relationships for seismic moment and average slip of strike-slip earthquakes incorporating fault slip rate, fault width and stress drop
John G. Anderson, Glenn Biasi, Stephen J. Angster, Stephen G. Wesnousky
2021, Bulletin of the Seismological Society of America (111) 2379-2392
We develop a self‐consistent scaling model relating magnitude Mw to surface rupture length (LE), surface displacement DE, and rupture width WE, for strike‐slip faults. Knowledge of the long‐term fault‐slip rate SF improves magnitude estimates. Data are collected for 55 ground‐rupturing strike‐slip earthquakes that have geological estimates...
A protocol for modelling generalised biological responses using latent variables in structural equation models
James B. Grace, Magdalena Steiner
Gbenga Akomolafe, editor(s)
2021, One Ecosystem (6)
In this paper we consider the problem of how to quantitatively characterize the degree to which a study object exhibits a generalized response. By generalized response, we mean a multivariate response where numerous individual properties change in concerted fashion due to some internal integration. In latent variable structural equation modeling...
Instrumental variable methods in structural equation models
James Grace
Michael Morrissey, editor(s)
2021, Methods in Ecology and Evolution (12) 1148-1157
Instrumental variable regression (RegIV) provides a means for detecting and correcting parameter bias in causal models. Widely used in economics, recently several papers have highlighted its potential utility for ecological applications. Little attention has thus far been paid to the fact that IV methods can also be implemented within...
Conservation of northwestern and southwestern pond turtles: Threats, population size estimates, and population viability analysis
Stephanie Manzo, E. Griffin Nicholson, Devereux. Zachary, Robert N. Fisher, Christopher W. Brown, Peter A Scott, H. Bradley Shaffer
2021, Journal of Fish and Wildlife Management (12) 485-501
Accurate status assessments of long-lived, widely distributed taxa depend on the availability of long-term monitoring data from multiple populations. However, monitoring populations across large temporal and spatial scales is often beyond the scope of any one researcher or research group. Consequently, wildlife managers may be...
The evolution of geospatial reasoning, analytics, and modeling
Samantha T. Arundel, Wenwen Li
2021, Book chapter, The Geographic Information Science & Technology Body of Knowledge
The field of geospatial analytics and modeling has a long history coinciding with the physical and cultural evolution of humans. This history is analyzed relative to the four scientific paradigms: (1) empirical analysis through description, (2) theoretical explorations using models and generalizations, (3)...
Reinterpreting the Bruun Rule in the context of equilibrium shoreline models
Maurizio D’Anna, Deborah Idier, Bruno Castelle, Sean Vitousek, Goneri Le Cozannet
2021, Journal of Marine Science and Engineering (9)
Long-term (>decades) coastal recession due to sea-level rise (SLR) has been estimated using the Bruun Rule for nearly six decades. Equilibrium-based shoreline models have been shown to skillfully predict short-term wave-driven shoreline change on time scales of hours to decades. Both the Bruun Rule and equilibrium shoreline...
Post audit of simulated groundwater flow to a short-lived (2019-2020) crater lake at Kīlauea Volcano
Ashton F. Flinders, James P. Kauahikaua, Paul A. Hsieh, Steven E. Ingebritsen
2021, Groundwater (60) 64-70
About 14.5 months after the 2018 eruption and summit collapse of Kīlauea Volcano, Hawaiʻi, liquid water started accumulating in the deepened summit crater, forming a lake that attained 51 m depth before rapidly boiling off on December 20, 2020, when an eruption from the crater wall poured lava...
Towards building a sustainable future: Positioning ecological modelling for impact in ecosystems management
Don DeAngelis, Daniel Franco, Alan Hastings, Frank M. Hilker, Suzanne Lenhart, Frithjof Lutscher, Natalia Petrovskaya, Sergei Petrovskii, Rebecca C. Tyson
2021, Bulletin of Mathematical Biology (83)
As many ecosystems worldwide are in peril, efforts to manage them sustainably require scientific advice. While numerous researchers around the world use a great variety of models to understand ecological dynamics and their responses to disturbances, only a small fraction of these models are ever used to inform ecosystem management....
Demographic modeling informs functional connectivity and management interventions in Graham’s beardtongue
Matthew Richard Jones, Daniel E. Winkler, Robert Massatti
2021, Conservation Genetics (22) 993-1003
Functional connectivity (i.e., the movement of individuals across a landscape) is essential for the maintenance of genetic variation and persistence of rare species. However, illuminating the processes influencing functional connectivity and ultimately translating this knowledge into management practice remains a fundamental challenge. Here, we combine various...
Machine learning predictions of mean ages of shallow well samples in the Great Lakes Basin, USA
Christopher Green, Katherine Marie Ransom, Bernard T. Nolan, Lixia Liao, Thomas Harter
2021, Journal of Hydrology (603)
The travel time or “age” of groundwater affects catchment responses to hydrologic changes, geochemical reactions, and time lags between management actions and responses at down-gradient streams and wells. Use of atmospheric tracers has facilitated the characterization of groundwater ages, but most wells lack such...
Evaluating stereo digital terrain model quality at Mars Rover Landing Sites with HRSC, CTX, and HiRISE Images
Randolph L. Kirk, David Mayer, Robin L. Fergason, Bonnie L. Redding, Donna M. Galuszka, Trent M. Hare, Klaus Gwinner
2021, Remote Sensing (13)
We have used high-resolution digital terrain models (DTMs) of two rover landing sites based on mosaicked images from the High-Resolution Imaging Science Experiment (HiRISE) camera as a reference to evaluate DTMs based on High-Resolution Stereo Camera (HRSC) and Context Camera (CTX) images. The Next-Generation Automatic Terrain Extraction...
Simulated effects of sea-level rise on the shallow, fresh groundwater system of Assateague Island, Maryland and Virginia
Brandon J. Fleming, Jeff P. Raffensperger, Phillip J. Goodling, John P. Masterson
2021, Scientific Investigations Report 2020-5104
The U.S. Geological Survey, in cooperation with the National Park Service, developed a three-dimensional groundwater-flow model for Assateague Island in eastern Maryland and Virginia to assess the effects of sea-level rise on the groundwater system. Sea-level rise is expected to increase the altitude of the water table in barrier island...
Landscape features fail to explain spatial genetic structure in white-tailed deer across Ohio, USA
Javan M. Bauder, Christine S. Anderson, H. Lisle Gibbs, Michael J. Tonkovich, W. David Walter
2021, Journal of Wildlife Management (85) 1669-1684
Landscape features influence wildlife movements across spatial scales and have the potential to influence the spread of disease. Chronic wasting disease (CWD) is a fatal prion disease affecting members of the family Cervidae, particularly white-tailed deer (Odocoileus virginianus), and the first positive CWD case in a wild deer in Ohio,...
