Effects of barrier island salt marsh restoration on marsh bird occurrence in the Northern Gulf of Mexico
Paige A. Byerly, Hardin Waddle, Alexis R. Premeaux, Paul L. Leberg
2020, Restoration Ecology (28) 1610-1620
In the Northern Gulf of Mexico, salt marshes are threatened by sea level rise, erosion, and loss of protective barrier islands. These barrier islands provide critical habitat for wildlife, including globally significant populations of marsh and shorebirds. We investigated salt marsh restoration on two Louisiana barrier islands using presence of...
Annual adult survival drives trends in Arctic-breeding shorebirds but knowledge gaps in other vital rates remain
Emily L. Weiser, Richard B. Lanctot, Stephen C. Brown, H. River Gates, Joël Bêty, Megan L. Boldenow, Rodney W. Brook, Glen S. Brown, Willow B. English, Scott A. Flemming, Samantha E. Franks, H. Grant Gilchrist, Marie-Andree Giroux, Andrew C. Johnson, Steve Kendall, Lisa V. Kennedy, Laura Koloski, Eunbi Kwon, Jean-François Lamarre, David B. Lank, Christopher J. Latty, Nicolas Lecomte, Joseph R. Liebezeit, Rebecca L McGuire, Laura McKinnon, Erica Nol, David C. Payer, Johanna Perz, Jennie Rausch, Martin D. Robards, Sarah T. Saalfeld, Nathan R. Senner, Paul A. Smith, Mikhail Soloviev, Diana V Solovyeva, David H. Ward, Paul F. Wood, Brett K. Sandercock
2020, The Condor (1222)
Conservation status and management priorities are often informed by population trends. Trend estimates can be derived from population surveys or models, but both methods are associated with sources of uncertainty. Many Arctic-breeding shorebirds are thought to be declining based on migration and/or overwintering population surveys, but data are lacking to...
Model-based clustering reveals patterns in central place use of a marine top predator
Brian M. Brost, Mevin Hooten, Robert J. Small
2020, Ecosphere
Satellite telemetry data are commonly used to quantify habitat selection, examine animal movements, and delineate home ranges. These data also contain valuable information concerning dens, nests, roosts, and other central places that are often associated with important life history events and may exhibit unique characteristics; however, using satellite telemetry data...
Statewide assessment of karst aquifers in New York with an inventory of closed-depression and focused-recharge features
William M. Kappel, James E. Reddy, Jonathan Casey Root
2020, Scientific Investigations Report 2020-5030
Karst is a landscape formed from the dissolution of soluble rock or rock containing minerals that are easily dissolved from within the rock. The landscape is characterized by sinkholes, caves, losing streams, springs, and underground drainage systems, which rapidly move water through the karst. The two forms of karst in...
Measuring channel planform change from image time series: A generalizable, spatially distributed, probabilistic method for quantifying uncertainty
Christina Leonard, Carl J. Legleiter, Devin M. Lea, John C. Schmidt
2020, Earth Surface Processes and Landforms (45) 2727-2744
Channels change in response to natural or anthropogenic fluctuations in streamflow and/or sediment supply and measurements of channel change are critical to many river management applications. Whereas repeated field surveys are costly and time‐consuming, remote sensing can be used to detect channel change at multiple temporal and spatial scales. Repeat...
Influence of hydropower outflow characteristics affecting riverbank stability: The lower Osage River case (Missouri, USA)
Wesam Mohammed-Ali, Cesar Mendoza, Robert R. Holmes Jr.
2020, Hydrological Sciences Journal (65) 1784-1793
This research examined the influences of outflow characteristics affecting riverbank stability. The 130 km stretch of the lower Osage River downstream from Bagnell Dam (Missouri, USA) provided an excellent case study for this purpose. The integrated BSTEM model with the HEC-RAS model was accurately calibrated and validated with data from...
Assessment of fire fuel load dynamics in shrubland ecosystems in the western United States using MODIS products
Zhen Li, Hua Shi, James Vogelmann, Todd Hawbaker, Birgit Peterson
2020, Remote Sensing (12)
Assessing fire behavior in shrubland/grassland ecosystems of the western United States has proven especially problematic, in part due to the complex nature of the vegetation and its relationships with prior fire history events. Our goals in this study were (1) to determine if we can effectively leverage...
Selected geologic maps of the Kodiak batholith and other Paleocene intrusive rocks, Kodiak Island, Alaska
David W. Farris, Peter J. Haeussler
2020, Scientific Investigations Map 3441
Kodiak Island in southern Alaska is one of the premier examples globally for the study of forearc magmatism. This location contains two Paleocene intrusive belts that formed due to the subduction of a migrating spreading ridge and slab-window: the Kodiak batholith and the trenchward magmatic belt. These magmatic rocks are...
Improved understanding and prediction of freshwater fish communities through the use of joint species distribution models
Tyler Wagner, Gretchen J.A. Hansen, Erin Schliep, Bethany Bethke, Andrew Honsey, Peter Jacobson, Benjamen C. Kline, Shannon L. White
2020, Canadian Journal of Fisheries and Aquatic Sciences (77) 1540-1551
Two primary goals in fisheries research are to (i) understand how habitat and environmental conditions influence the distribution of fishes across the landscape and (ii) make predictions about how fish communities will respond to environmental and anthropogenic change. In inland, freshwater ecosystems, quantitative approaches traditionally used to accomplish these goals...
Yellowstone Lake ecosystem restoration: A case study for invasive fish management
Todd M. Koel, Jeffrey L. Arnold, Patricia E. Bigelow, Travis O. Brenden, Jeffery D. Davis, Colleen R. Detjens, Philip D. Doepke, Brian D. Ertel, Hayley C. Glassic, Robert E. Gresswell, Christopher S Guy, Drew J. MacDonald, Michael E. Ruhl, Todd J. Stuth, David P. Sweet, John M. Syslo, Nathan A. Thomas, Lusha M. Tronstad, Patrick J. White, Alexander V. Zale
2020, Fishes (5)
Invasive predatory lake trout Salvelinus namaycush were discovered in Yellowstone Lake in 1994 and caused a precipitous decrease in abundance of native Yellowstone cutthroat trout Oncorhynchus clarkii bouvieri. Suppression efforts (primarily gillnetting) initiated in 1995 did not curtail lake trout population growth or lakewide expansion. An adaptive management strategy was developed in...
The ocean's impact on slow slip events
Joan S. Gomberg, Peter J. Baxter, Euan G. C. Smith, Keisuke Ariyoshi, Steve Chiswell
2020, Geophysical Research Letters (47)
We test the hypothesis that ocean seafloor pressures impart stresses that alter the initiation or termination of transient slow slip events (SSEs) on shallow submarine and near-coastal faults, using simulated seafloor pressures and a new catalog of SSEs in the Hikurangi subduction zone. We show that seafloor pressures may be...
Asymmetric benefits of a heterospecific breeding association vary with habitat, conspecific abundance and breeding stage
Rose J. Swift, Michael J. Anteau, Erin A. Roche, Mark H. Sherfy, Dustin L. Toy, Megan M. Ring
2020, Oikos (10) 1504-1520
Heterospecific breeding associations may benefit individuals by mitigating predation risk but may also create costs if they increase competition for resources or are more easily detectable by predators. Our understanding of the interactions among hetero‐ and conspecifics is often lacking in mixed species colonies. Here, we...
Quantifying the contribution of habitats and pathways to a spatially structured population facing environmental change
Christine Sample, Joanna A. Bieri, Benjamin L. Allen, Yulia Dementieva, Alyssa Carson, Connor Higgins, Sadie Piatt, Shirley Qiu, Summer Stafford, Brady J. Mattsson, Darius J. Semmens, James E. Diffendorfer, Wayne E. Thogmartin
2020, American Naturalist (196) 157-168
The consequences of environmental disturbance and management are difficult to quantify for spatially structured populations because changes in one location carry through to other areas as a result of species movement. We develop a metric, G, for measuring the contribution of a habitat or pathway to network-wide population...
Geochronologic and Hf-isotope framework of Proterozoic rocks from central New Mexico, USA: Formation of the Mazatzal crustal province in an extended continental margin arc
Mark E. Holland, Tyler A. Grambling, Karl E. Karlstrom, James V. Jones III, Kimberly N. Nagotko, Christopher G. Daniel
2020, Precambrian Research (347)
The growth of southern Laurentia has been attributed to the accretion of juvenile arc terranes during the successive 1.74-1.68 Ga Yavapai and 1.65-1.60 Ga Mazatzal orogenies. However, in light of the increasing importance of the ca. 1.49-1.40 Ga Mesoproterozoic Picuris orogeny, the tectonic setting in which the Mazatzal crustal province...
Land use effects on sediment nutrient processes in a heavily modified watershed using structural equation models
Rebecca M. Kreiling, Martin C. Thoms, Lynn A. Bartsch, James H. Larson, Victoria Christensen
2020, Water Resources Research (56)
Contemporary land use can affect sediment nutrient processes in rivers draining heavily modified watersheds; however, studies linking land use to sediment nutrient processes in large river networks are limited. In this study, we developed and evaluated structural equation models (SE models) for denitrification and phosphorus retention capacity to determine direct...
Modified GIC estimation using 3-D Earth conductivity
Anna Kelbert, Greg M. Lucas
2020, Space Weather (18)
Geomagnetically induced currents (GICs) are quasi-direct current (DC) electric currents that flow in technological conductors during geomagnetic storms. Extreme GICs are hazardous to man-made infrastructure. GICs enter and exit the technological systems, such as the electric power grid, at grounding points, and their magnitudes depend on...
A global hybrid VS30 map with a topographic slope–based default and regional map insets
David C. Heath, David J. Wald, C. Bruce Worden, Eric M. Thompson, Gregory M. Smoczyk
2020, Earthquake Spectra (36) 1570-1584
Time-averaged shear wave velocity over the upper 30 m of the earth’s surface (VS30) is a key parameter for estimating ground motion amplification as both a predictive and a diagnostic tool for earthquake hazards. The first-order approximation of VS30 is commonly obtained through a topographic slope–based or terrain proxy due to the widely...
Comparison of SELDM simulated total-phosphorus concentrations with ecological impervious-area criteria
Lillian C. Jeznach, Gregory E. Granato
2020, Journal of Environmental Engineering (146)
Ecological studies indicate that impervious cover (IC) greater than approximately 5%–20% may have adverse effects on receiving-stream ecology. It is difficult to separate the effects of runoff quality from other effects of urbanization on receiving streams. This study presents the results of a numerical experiment to assess...
Characterizing the diverse hydrogeology underlying rivers and estuaries using new floating transient electromagnetic methodology
John W. Lane, Martin A. Briggs, PK Maurya, Eric A. White, JB Pedersen, Esben Auken, Neil Terry, Burke J. Minsley, Wade Kress, Denis R. LeBlanc, Ryan F. Adams, Carole D. Johnson
2020, Science of the Total Environment (740)
The hydrogeology below large surface water features such as rivers and estuaries is universally under-informed at the long reach to basin scales (tens of km+). This challenge inhibits the accurate modeling of fresh/saline groundwater interfaces and groundwater/surface water exchange patterns at management-relevant spatial extents. Here we introduce a towed, floating...
Optimizing earthquake early warning alert distance strategies using the July 2019 Mw6.4 and Mw7.1 Ridgecrest, California, earthquakes
Jessie Kate Saunders, Brad T. Aagaard, Annemarie S. Baltay Sundstrom, Sarah E. Minson
2020, Bulletin of the Seismological Society of America (110) 1872-1886
The ShakeAlert earthquake early warning system aims to alert people who experience modified Mercalli intensity (MMI) IV+ shaking during an earthquake using source estimates (magnitude and location) to estimate median‐expected peak ground motions with distance, then using these ground motions to determine median‐expected MMI and thus the extent of MMI...
Changes in climate and land cover affect seasonal streamflow forecasts in the Rio Grande headwaters
Colin A. Penn, David W. Clow, Graham A. Sexstone, Sheila F. Murphy
2020, Journal of the American Water Resources Association (56) 882-902
Seasonal streamflow forecast bias, changes in climate, snowpack, and land cover, and the effects of these changes on relations between basin‐wide snowpack, SNOw TELemetry (SNOTEL) station snowpack, and seasonal streamflow were evaluated in the headwaters of the Rio Grande, Colorado. Results indicate that shifts in the seasonality of precipitation and...
The impact of sediment supply on the initiation and magnitude of runoff-generated debris flows
Hui Tang, Luke A. McGuire, Jason W. Kean, Joel B. Smith
2020, Geophysical Research Letters (47)
Rainfall intensity‐duration (ID) thresholds are commonly used to assess the potential for runoff‐generated debris flows, but the sensitivity of these thresholds to sediment supply, which can change rapidly with time, is relatively unexplored. Furthermore, debris flows often self‐organize into distinct surges, but the factors controlling the magnitude and frequency of...
Repeatable source, path, and site effects from the 2019 Ridgecrest M7.1 earthquake sequence
Grace Alexandra Parker, Annemarie S. Baltay Sundstrom, John Rekoske, Eric M. Thompson
2020, Bulletin of the Seismological Society of America (110) 1530-1548
We use a large instrumental dataset from the 2019 Ridgecrest earthquake sequence (Rekoske et al., 2019, 2020) to examine repeatable source‐, path‐, and site‐specific ground motions. A mixed‐effects analysis is used to partition total residuals relative to the Boore et al. (2014;...
Observations on the structure of Surtsey
James G. Moore, Marie D. Jackson
2020, Surtsey Research (14) 33-45
Comparison of investigations of the 1979 and 2017 cored boreholes coupled with continued observations of the dynamic surface of Surtsey has modified our concepts of the subsurface structure of the volcano. A geometrical analysis of the 2017 vertical and inclined cores indicates that near-surface layering dips westerly, indicating that the...
Corrigendum to "A remote sensing-based model of tidal marsh aboveground carbon stocks for the conterminous United States" [ISPRS J. Photogram. Rem. Sens.139 (2018) 255-271]
Kristin B. Byrd, Laurel Ballanti, Nathan Thomas, Dung Nguyen, James Holmquist, Marc Simard, Lisamarie Windham-Myers
2020, ISPRS Journal of Photogrammetry and Remote Sensing (166) 63-67
The authors regret that two thirds of the San Francisco Bay biomass data included in the Landsat random forest models were not scaled to the proper units of grams per square meter. This error affects the Landsat-only models in the article, which are models #1-4 shown in Table 6. The...
