Applying the Watershed Approach to Urban Ecosystems in Baltimore
Peter Groffman, Laurence Band, Kenneth Belt, Neil Bettez, Aditi Bhaskar, Edward Doheny, Jonathan Duncan, Sujay Kaushal, Emma Rosi-Marshall, Claire Welty
2019, Book chapter, Science for the sustainable city : Empirical insights from the Baltimore School of Urban Ecology
No abstract available....
Co-located contemporaneous mapping of morphological, hydrological, chemical, and biological conditions in a 5th-order mountain stream network, Oregon, USA
Adam S Ward, Jay P. Zarnetske, Viktor Baranov, Phillip J Blaen, Nicolai Brekenfeld, Rosalie Chu, Romain Derelle, Jennifer D. Drummond, Jan Fleckenstein, Vanessa Garayburu-Caruso, Emily B. Graham, David Hannah, Ciaran Harman, Jase Hixson, Julia LA Knapp, Stefan Krause, Marie Kurz, Jorg Lewandowski, Angang Li, Eugènia Martí, Melinda Miller, Alexander Milner, Kerry Neil, Luisa Orsini, Aaron I. Packman, Stephen Plont, Lupita Renteria, Kevin Roche, Todd V Royer, Noah Schmadel, Catalina Segura, James Stegen, Jason Toyoda, Jacqueline Wells, Nathan Wisnoski, Steven Wondzell
2019, Earth System Science Data (11) 1567-1581
A comprehensive set of measurements and calculated metrics describing physical, chemical, and biological conditions in the river corridor is presented. These data were collected in a catchment-wide, synoptic campaign in the H. J. Andrews Experimental Forest (Cascade Mountains, Oregon, USA) in summer 2016 during low-discharge conditions....
User guide to the FireCLIME Vulnerability Assessment (VA) Tool: A rapid and flexible system for assessing ecosystem vulnerability to climate-fire interactions
Megan Friggens, Rachel A. Loehman, Andi Thode, William T. Flatley, Alexander Evans, Windy Bunn, Craig Wilcox, Stephanie Mueller, Larissa Yocum, Donald A. Falk
2019, Report
Decisionmakers need better methods for identifying critical ecosystem vulnerabilities to changing climate and fire regimes. Climate-wildfire-vegetation interactions are complex and hinder classification and projection necessary for development of management strategies. One such vulnerability assessment (VA) is FireCLIME VA, which allows users to compare management strategies under various climate scenarios and...
13C and 15N NMR identification of product compound classes from aqueous and solid phase photodegradation of 2,4,6-trinitrotoluene
Kevin A. Thorn
2019, PLoS ONE (14)
Abstract Photolysis is one of the main transformation pathways for 2,4,6-trinitrotoluene (TNT) released into the environment. Upon exposure to sunlight, TNT is known to undergo both oxidation and reduction reactions with release of nitrite, nitrate, and ammonium ions, followed by condensation reactions of the oxidation and reduction products. In this...
Optical properties of water for prediction of wastewater contamination in surface water
Steven Corsi, Sandra McLellan
2019, Report
No abstract available....
Improvements in seismic resolution and current limitations in the Global Seismographic Network
Adam T. Ringler, J. Steim, David C. Wilson, R. Widmer-Schnidrig, Robert E. Anthony
2019, Geophysical Journal International (220) 508-521
Station noise levels play a fundamental limitation in our ability to detect seismic signals. These noise levels are frequency-dependent and arise from a number of physically different drivers. At periods greater than 100 s, station noise levels are often limited by the self-noise of the instrument as well...
Challenges for monitoring the extent and land use/cover changes in monarch butterflies’ migratory habitat across the United States and Mexico
Rafael Moreno-Sanchez, James Raines, James E. Diffendorfer, Mark A. Drummond, Jessica Manko
2019, Land (10)
This paper presents a synopsis of the challenges and limitations presented by existing and emerging land use/ land cover (LULC) digital data sets when used to analyze the extent, habitat quality, and LULC changes of the monarch (Danaus plexippus) migratory habitat across the United States of America (US) and Mexico....
Assessing plant production responses to climate across water-limited regions using Google Earth Engine
Erin L. Bunting, Seth M. Munson, John B. Bradford
2019, Remote Sensing of Environment (233) 1-15
(Munson) Climate variability and change acting at broad scales can lead to divergent changes in plant production at local scales. Quantifying how production responds to variation in climate at local scales is essential to understand underlying ecological processes and inform land management decision-making, but has historically been limited in spatiotemporal...
Hysteretic response of solutes and turbidity at the event scale across forested tropical montane watersheds
Adam S. Wymore, Miguel C. Leon, James B. Shanley, William C. McDowell
2019, Frontiers in Earth Science (7)
Concentration-discharge relationships are a key tool for understanding the sourcing and transport of material from watersheds to fluvial networks. Storm events in particular provide insight into variability in the sources of solutes and sediment within watersheds, and the hydrologic pathways that connect hillslope to stream channel. Here we examine high-frequency...
Identifying credible and diverse GCMs for regional climate change studies—case study: Northeastern United States
Ambarish V. Karmalkar, Jeanne M. Thibeault, Alexander Bryan, Anji Seth
2019, Climatic Change (154) 367-386
Climate data obtained from global climate models (GCMs) form the basis of most studies of regional climate change and its impacts. Using the northeastern US as a test case, we develop a framework to systematically sub-select reliable models for use in climate change studies in the region. We retain 14...
Assessment of continuous gas resources in the Permian Phosphoria Formation of the Southwestern Wyoming Province, Wyoming, 2019
Christopher J. Schenk, Tracey J. Mercier, Thomas M. Finn, Kristen R. Marra, Phuong A. Le, Heidi M. Leathers-Miller, Janet K. Pitman, Michael E. Brownfield, Ronald M. Drake II
2019, Fact Sheet 2019-3047
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.4 trillion cubic feet of continuous gas in the Phosphoria Formation of the Southwestern Wyoming Province, Wyoming....
Debris-flow monitoring and warning: Review and examples
Marcel Hurlimann, Velio Coviello, Coraline Bel, Xiaojun Guo, Matteo Berti, Christoph Graf, Johannes Hubl, Shusuke Miyata, Joel B. Smith, Hsiao-Yuan Yin
2019, Earth-Science Reviews (199)
Debris flows represent one of the most dangerous types of mass movements, because of their high velocities, large impact forces and long runout distances. This review describes the available debris-flow monitoring techniques and proposes recommendations to inform the design of future monitoring and warning/alarm systems. The selection and application of...
Comparisons of stereological and other approaches for quantifying macrophage aggregates in piscine spleens
Mark A Matsche, Vicki S. Blazer, Patricia M. Mazik
2019, Journal of Aquatic Animal Health (31) 328-348
Macrophage aggregates (MA s) are focal accumulations of pigmented macrophages in the spleen and other tissues of fish. A central role of MA s is the clearance and destruction of degenerating cells and recycling of some cellular components. Macrophage aggregates also respond to chemical contaminants and infectious agents and may...
Total grain size distribution of an intense Hawaiian fountaining event: Case study of the1959 Kīlauea Iki eruption
Sebastian B Mueller, Bruce F. Houghton, Donald A. Swanson, Matthieu Poret, Sarah A. Fagents
2019, Bulletin of Volcanology (81)
The 1959 eruption of Kīlauea Iki on the Island of Hawai’i is a principal example of powerful Hawaiian fountaining. Over 36 days (including repose periods), 16 fountaining episodes created a small cone, a downwind tephra blanket of approximately 0.003 km3 and a lava lake of about 0.04 km3 volume. During the explosive activity, the maximum...
Ecosystem size predicts social dynamics in recreational fisheries
M. A. Kaemingk, C. J. Chizinski, Craig R. Allen, Kevin L. Pope
2019, Ecology and Society (24)
Recreational fisheries are complex adaptive systems that are inherently difficult to manage due to a heterogeneous user group (consumptive vs. non-consumptive) that utilize patchily distributed resources on the landscape (lakes, rivers, coastlines). There is a need to identify which system components can effectively predict and be used to manage...
Prey fish communities of the Laurentian Great Lakes: A cross-basin overview of status and trends based on bottom trawl surveys, 1978-2016
Owen Gorman
2019, Aquatic Ecosystem Health & Management (22) 263-279
Annual bottom trawl surveys were initiated in the 1970s in Laurentian Great Lakes Superior, Huron, Michigan and Ontario and in 1990 in Erie to provide annual assessments of the status and trends of prey fish communities. Native Cisco Coregonus artedi and Bloater C. hoyi dominated the prey fish community of Lake Superior. Prey fish...
Historical land use and land cover for assessing the northern Colorado Front Range urban landscape
Mark A. Drummond, Michael P. Stier, James E. Diffendorfer
2019, Journal of Maps (15) 89-93
We describe historical land-use and land-cover (LULC) maps for the northern Colorado urban Front Range. The Front Range urban landscape is diverse and interspersed with highly productive agriculture as well as natural land cover types including evergreen forest in the Rocky Mountain foothills and Great Plains grassland. To understand the...
Comparing and improving methods for reconstructing peatland water-table depth from testate amoebae
Connor Nolan, John Tipton, Robert K. Booth, Mevin Hooten, Stephen Jackson
2019, Holocene (29) 1350-1361
Proxies that use changes in the composition of ecological communities to reconstruct temporal changes in an environmental covariate are commonly used in paleoclimatology and paleolimnology. Existing methods, such as weighted averaging and modern analog technique, relate compositional data to the covariate in very simple ways, and different methods are seldom compared...
Differential effects of temperature and salinity on growth and mortality of oysters (Crassostrea virginica) in Barataria Bay and Breton Sound, Louisiana
T. Sehlinger, M.R. Lowe, Megan K. LaPeyre, T.M. Soniat
2019, Journal of Shellfish Research (38) 317-326
Temperature and salinity and their interaction exert a major control on the life cycle of the eastern oyster (Crassostrea virginica), affecting reproduction, development, growth, and mortality. Quantifying specific temperature and salinity relationships on oyster growth and mortality has however proven difficult, with data suggesting potentially region-specific responses. Legacy and recent...
A Generalized Additive Model approach to evaluating water quality: Chesapeake Bay Case Study
Rebecca Murphy, Elgin Perry, Jon Harcum, Jennifer L. Keisman
2019, Environmental Modelling & Software (118)
Nutrient-reduction efforts have been undertaken in recent decades to mitigate the impacts of eutrophication in coastal and estuarine systems worldwide. To track progress in response to one of these efforts we use Generalized Additive Models (GAMs) to evaluate a diverse suite of water quality constituents over a 32-year period in...
Where was the 31 October 1895, Charleston, Missouri Earthquake?
Stacey S. Martin, Susan E. Hough
2019, Bulletin of the Seismological Society of America (109) 1479-1497
We revisit the magnitude and location of the 31 October 1895 Charleston, Missouri earthquake, which is widely regarded to be the last MW6 or greater earthquake in the central United States. Although a recent study (Bakun et al., 2003) concluded that this earthquake was located in southern Illinois, over 100...
Dextral, normal, and sinistral faulting across the eastern California shear zone-Mina deflection transition, California-Nevada
Kevin DeLano, Jeffrey Lee, Rachelle Roper, Andrew T. Calvert
2019, Geosphere (15) 1206-1239
Strike-slip faults commonly include extensional and contractional bends and stepovers, whereas rotational stepovers are less common. The Volcanic Tableland, Black Mountain, and River Spring areas (California and Nevada, USA) (hereafter referred to as the VBR region) straddle the transition from the dominantly NW-striking dextral faults that define the northwestern part...
A new set of basaltic tephras from southeastern Alaska represent key stratigraphic markers for the late Pleistocene
Paul S. Wilcox, Jason A. Addison, Sarah J. Fowell, James F. Baichtal, Ken Severin, Daniel H. Mann
2019, Quaternary Research (92) 246-256
An 8-cm-thick black basaltic tephra with nine discrete normally graded beds is present in cores from a lake on Baker Island in southeastern Alaska. The estimated age of the tephra is 13,492 ± 237 cal yr BP. Although similar in age to the MEd tephra from the adjacent Mt. Edgecumbe...
Geese mediate vegetation state changes with parallel effects on N cycling that leave nutritional legacies for offspring
Roger W. Ruess, Jack McFarland, Brian T. Person, James S. Sedinger
2019, Ecosphere (10)
Along the coastal fringe of the Yukon–Kuskokwim River Delta in southwestern Alaska, geese maintain grazing lawns dominated by a rhizomatous sedge that, when ungrazed, transitions to a taller, less palatable growth form that is taxonomically described as a different species. Nutrients recycled in goose feces, in conjunction with grazing, are...
Relevance of wind stress and wave-dependent ocean surface roughness on the generation of winter meteotsunamis in Northern Gulf of Mexico
Lijing Shi, Maitane Olabarrieta, Arnoldo Valle-Levinson, John C. Warner
2019, Ocean Modeling (140)
Meteotsunamis associated with passing squall lines are often observed ahead of cold fronts during winter seasons in Northern Gulf of Mexico. These types of meteotsunamis occur simultaneously with wind speed variations (~5-20 m/s) and sea-level atmospheric pressure oscillations (~1-6 hPa) with periods between 2 hours to several minutes. In order...
