Influence of salinity on relative density of American crocodiles (Crocodylus acutus) in Everglades National Park: Implications for restoration of Everglades ecosystems
Frank J. Mazzotti, Brian Smith, Michiko Squires, Michael S. Cherkiss, Seth C Farris, Caitlin Hackett, Kristen M. Hart, Venetia Briggs-Gonzalez, Laura A. Brandt
2019, Ecological Indicators (102) 608-616
The status of the American crocodile (Crocodylus acutus) has long been a matter of concern in Everglades National Park (ENP) due to its classification as a federal and state listed species, its recognition as a flagship species, and its function as an ecosystem indicator. Survival and recovery of American crocodiles...
Quantification of sucralose in groundwater well drinking water by silylation derivatization and gas chromatography-mass spectrometry
Stefan Voss, Elisabeth Newman, Justin P Miller-Schulze
2019, Analytical Methods (21)
Sucralose is an increasingly popular artificial sweetener and has been found in the environment in groundwater, surface water, and wastewater treatment plant effluent. Its chemical properties make it strongly recalcitrant in the environment and it has been used as a conservative tracer of human wastewater in recent years. Most...
A hierarchical Bayesian approach for handling missing classification data
Alison C. Ketz, Therese L. Johnson, Mevin Hooten, N. Thompson Hobbs
2019, Ecology and Evolution (9) 3130-3140
Ecologists use classifications of individuals in categories to understand composition of populations and communities. These categories might be defined by demographics, functional traits, or species. Assignment of categories is often imperfect, but frequently treated as observations without error. When individuals are observed but not classified, these “partial” observations must...
Cooperative Fish and Wildlife Research Units program—2018 year in review postcard
John F. Organ, John D. Thompson, Dawn E. Childs, Donald E. Dennerline
2019, General Information Product 187
This postcard provides details about the "Cooperative Fish and Wildlife Research Units Program—2018 Year in Review," U.S. Geological Survey Circular 1452, now available at https://doi.org/10.3133/cir1452. In this report, you will find details about the Cooperative Fish and Wildlife Research Units (CRU) program relating to its background, fish and...
Cooperative Fish and Wildlife Research Units program—2018 year in review
John F. Organ, John D. Thompson, Dawn E. Childs, Donald E. Dennerline
2019, Circular 1452
The Cooperative Fish and Wildlife Research Units (CRU) program had an interesting and challenging year in 2018. We made significant strategic advances on many fronts and had setbacks in others.Our relationship with the U.S. Fish and Wildlife Service, the agency we belonged to from 1935 to the mid-1990s, was further...
Geologic map of the Hartsel Quadrangle, Park County, Colorado
Peter E. Barkmann, Karen J. Houck, Marieke Dechesne, Jonathan R. Lovekin, Erinn P. Johnson
2019, Open-File Report 17-04
The Hartsel quadrangle sits nearly in the center of the complex South Park Laramide structural basin. Generally, the basin can be described as an asymmetrical down-faulted feature, dipping to the east. It is bounded by two northwest-trending uplifts: the Sawatch uplift to the west and the Front Range uplift to...
Isotopic ratios of Saturn's rings and satellites: Implications for the origin of water and Phoebe
Roger N. Clark, Robert H. Brown, D.P. Cruikshank, Gregg A. Swayze
2019, Icarus (40) 431-470
Isotopic ratios have long been used to learn about physical processes acting over a wide range of geological environments, and in constraining the origin and/or evolution of planetary bodies. We report the spectroscopic detection of deuterium in Saturn's rings and satellites, and use these measurements to determine the (D/H) ratios...
Topographic mapping evolution: From field and photogrammetric data collection to GIS production and Linked Open Data
E. Lynn Usery, Dalia E. Varanka, Larry Davis
2019, Cartographic Journal (55) 378-390
Whither the topographic map? Topographic mapping historically has been approached as a map factory operation through the period 1879-1990. During this time, data were field and photogrammetrically collected; cartographically verified and annotated creating a compilation manuscript; further edited, generalized, symbolized, and produced as a graphic output product using lithography, or...
Recent trends in nutrient and sediment loading to coastal areas of the conterminous U.S.: Insights and global context
Gretchen P. Oelsner, Edward G. Stets
2019, Science of the Total Environment (654) 1225-1240
Coastal areas in the U.S. and worldwide have experienced massive population and land use changes contributing to significant degradation of coastal ecosystems. Excess nutrient pollution causes coastal ecosystem degradation, and both regulatory and management efforts have targeted reducing nutrient and sediment loading to coastal rivers. Decadal trends in flow-normalized nutrient...
Landscape connectivity planning for adaptation to future climate and land-use change
Jennifer K. Costanza, Adam J. Terando
2019, Current Landscape Ecology Reports (4) 1-13
Purpose of ReviewWe examined recent literature on promoting habitat connectivity in the context of climate change (CC) and land-use change (LUC). These two global change forcings have wide-reaching ecological effects that are projected to worsen in the future. Improving connectivity is a common adaptation strategy,...
Adjudicating groundwater: A judge’s guide to understanding groundwater and modeling
Thomas Harter, Tara Moran, Eric Wildman
Alf Brandt, Michael N. Fienen, Jeremy T. White, editor(s)
2019, Book
Dividing the Waters offers this groundwater science bench book that cannot be matched by any other scientific or judicial publication. Adjudicating Groundwater combines the expertise and experience of academic scientists (UC Davis/Stanford), federal scientists (U.S. Geological Survey), and judicial officers to create a resource that can fulfill the needs of...
When the earth doesn’t stop shaking: How experiences over time influenced information needs, communication, and interpretation of aftershock information during the Canterbury Earthquake Sequence, New Zealand
Julia S. Becker, Sally H. Potter, Sara K. McBride, Anne M. Wein, Douglas Paton
2019, Natural Hazards (34) 397-411
The Canterbury Earthquake Sequence (CES) began with the Darfield earthquake on 4 September 2010. Continual large and small aftershocks since that time have meant communities have cycled through repeated periods of impact, response and recovery. Scientific communication about aftershocks during such a prolonged sequence has faced distinct challenges. We conducted research to better understand...
Integrating magnetotellurics, soil gas geochemistry and structural analysis to identify hidden, high enthalpy, extensional geothermal systems
Philip E. Wannamaker, James E Faulds, B. Mack Kennedy, Virginie Maris, Drew L. Siler, Craig Ulrich, Joseph Moore
2019, Conference Paper, Proceedings, 44nd Workshop on Geothermal Reservoir Engineering
We applied magnetotellurics (MT), diagnostic structural affiliations, soil gas flux, and fluid geochemistry to assist in identifying hidden, high-enthalpy geothermal systems in extensional regimes of the U.S. Great Basin. We are specifically looking for high-angle, low-resistivity zones and dilatant geologic structures that can carry fluids from magmatic or high-grade metamorphic...
Evidence for a duplicated mitochondrial region in Audubon’s shearwater based on MinION sequencing
Lucas Torres, Andreanna J. Welch, Catherine Zanchetta, Terry Chesser, Maxime Manno, Cecile Donnadieu, Vincent Bretagnolle, Eric Pante
2019, Mitochondrial DNA Part A (30) 256-263
Mitochondrial genetic markers have been extensively used to study the phylogenetics and phylogeography of many birds, including seabirds of the order Procellariiformes. Evidence suggests that part of the mitochondrial genome of Procellariiformes, especially albatrosses, is duplicated, but no DNA fragment covering the entire duplication has been sequenced. We sequenced the...
Practical tips to establish an actionable science portfolio for climate adaptation
Gustavo A. Bisbal
2019, Science and Public Policy (46) 148-153
The delivery of climate adaptation science products and services to inform resource management decisions—otherwise known as actionable climate adaptation science—is the primary driver and intended outcome of the science portfolios administered within the Department of the Interior's Climate Adaptation Science Center (CASC) network in the USA. This commitment hinges on...
Mineral resource of the month: Garnet
Kenneth C. Curry
2019, EARTHCARE: Global Protection of Natural Areas. (64) 98-99
Garnet is the general name given to a group of complex silicate minerals, all with isometric crystal structure and similar properties and chemical composition. The most common garnet minerals are classified into three groups: the aluminum-garnet group, the chromium-garnet group and the iron-garnet group. Worldwide, garnet resources are large and...
Louisiana black bear post-delisting monitoring: 3rd annual report
Joseph D. Clark, Maria Davidson, Robert Greco, D.M. Soileau Jr.
2019, Report
This report details population and habitat monitoring results as required for post-delisting monitoring under the US Endangered Species Act....
Microclimate influences mangrove freeze damage: Implications for range expansion in response to changing macroclimate
Michael J. Osland, Arik M. Hartmann, Richard H. Day, Michael S. Ross, Courtney T. Hall, Laura C. Feher, William Vervaeke
2019, Estuaries and Coasts (42) 1084-1096
In response to warming winter air temperatures, freeze-sensitive mangrove forests are expected to expand at the expense of freeze-tolerant salt marshes. To better anticipate and prepare for mangrove range expansion, there is a need to advance understanding of the modulating role of microclimate. Here, we synthesized hypotheses regarding the effects...
Hillslope hydrology in global change research and earth system modeling
Ying Fan, Martyn Clark, David M. Lawrence, Sean Swenson, L. E. Band, S. L. Brantley, P. D. Brooks, W. E. Dietrich, A. Flores, G. Grant, J. W. Kirchner, D. S. Mackay, J.J. McDonnell, Paul C. D. Milly, P. L. Sullivan, C. Tague, H. Ajami, N. W. Chaney, A. Hartmann, P. Hazenberg, J. McNamara, J. Pelletier, J. Perket, E. Rouholahnejad-Freund, T. Wagener, X. Zeng, E. Beighley, J. Buzan, M. Huang, B. Livneh, B. P. Mohanty, B. Nijssen, M. Safeeq, C. Shen, W. van Verseveld, J. Volk, D. Yamazaki
2019, Water Resources Research (55) 1737-1772
Earth System Models (ESMs) are essential tools for understanding and predicting global change, but they cannot explicitly resolve hillslope‐scale terrain structures that fundamentally organize water, energy, and biogeochemical stores and fluxes at subgrid scales. Here we bring together hydrologists, Critical Zone scientists, and ESM developers, to explore how hillslope structures...
Spatiotemporal remote sensing of ecosystem change and causation across Alaska
Neal J. Pastick, M. Torre Jorgenson, Scott J. Goetz, Benjamin M. Jones, Bruce K. Wylie, Burke J. Minsley, Hélène Genet, Joseph F. Knight, David K. Swanson, Janet C. Jorgenson
2019, Global Change Biology (25) 1171-1189
Contemporary climate change in Alaska has resulted in amplified rates of press and pulse disturbances that drive ecosystem change with significant consequences for socio‐environmental systems. Despite the vulnerability of Arctic and boreal landscapes to change, little has been done to characterize landscape change and associated drivers across northern high‐latitude ecosystems....
Prediction of ice‐free conditions for a perennially ice‐covered Antarctic lake
Maciej Obryk, P. T. Doran, J. C. Priscu
2019, Journal of Geophysical Research F: Earth Surface (124) 686-694
Although perennially ice‐covered Antarctic lakes have experienced variable ice thicknesses over the past several decades, future ice thickness trends and associated aquatic biological responses under projected global warming remain unknown. Heat stored in the water column in chemically stratified Antarctic lakes that have middepth temperature maxima can significantly influence the...
An improved mechanical owl for efficient capture of nesting raptors
Meghan K. Jensen, Shanti D. Hamburg, Christopher T. Rota, David F. Brinker, Dustin L. Coles, Mark A. Manske, Vincent A. Slabe, Matthew J. Stuber, Amy B. Welsh, Todd E. Katzner
2019, Journal of Raptor Research (53) 14-25
Scientific study of raptors often requires the use of a lure to capture individuals for marking or collecting various data and samples. Live lure owls in the genus Bubo are commonly used with mist nets or dho-gazas to trap nesting raptors, but the use of these live lures presents ethical, logistical, and...
Genetic and morphological differences between water chestnut (Myrtales: Lythraceae: Trapa) populations in the northeastern United States, Japan, and South Africa
Lynde L. Dodd, Nancy B. Rybicki, Ryan Thum, Yasuro Kadono, Kadiera Searfoss Ingram
2019, Technical Report ERDC/EL TR-19-3
This Special Report (SR) outlines preliminary work conducted under the Aquatic Plant Control Research Program (APCRP) to investigate genetic and morphological differences of Trapa taxa (water chestnut) in the Northeastern (NE) US. Comparisons of morphological characteristics and genetics were made between Trapa populations from the native region of Eurasia...
A constant slip rate for the western Qilian Shan frontal thrust during the last 200 ka consistent with GPS-derived and geological shortening rates
Ralf Hetzel, Andrea Hampel, Pia Gebbeken, Qiang Xu, Ryan D. Gold
2019, Earth and Planetary Science Letters (509) 100-113
Active thrust faulting at the front of the Qilian Shan accommodates the northeastward growth of the Tibetan Plateau, however, the lifespan of individual faults and their slip history on different timescales remain largely unknown. Here, we show that the main range-bounding thrust fault of the western Qilian Shan has accrued...
Principles of translational science education
Chris Sutherland, B Padilla, Evan H. Campbell Grant
2019, Frontiers in Ecology and Evolution (17) 82-84
In a recent special issue in Frontiers in Ecology and the Environment, Enquist et al. (2017) present a welcome streamlining of modern applied ecology emphasizing a collaborative approach to applied ecological research involving resource-managers and scientists to produce actionable science: translational ecology (TE). The authors, including ecologists, social scientists, and conservation professionals, identified six principles...
