Baseline and projected future carbon storage and carbon fluxes in ecosystems of Hawai‘i
Paul C. Selmants, Christian P. Giardina, James D. Jacobi, Zhiliang Zhu, editor(s)
2017, Professional Paper 1834
This assessment was conducted to fulfill the requirements of section 712 of the Energy Independence and Security Act of 2007 and to improve understanding of factors influencing carbon balance in ecosystems of Hawai‘i. Ecosystem carbon storage, carbon fluxes, and carbon balance were examined for major terrestrial ecosystems on the seven...
Eastern Denali Fault surface trace map, eastern Alaska and Yukon, Canada
Adrian M. Bender, Peter J. Haeussler
2017, Open-File Report 2017-1049
We map the 385-kilometer (km) long surface trace of the right-lateral, strike-slip Denali Fault between the Totschunda-Denali Fault intersection in Alaska, United States and the village of Haines Junction, Yukon, Canada. In Alaska, digital elevation models based on light detection and ranging and interferometric synthetic aperture radar data enabled our...
Analytical validation of a reverse transcriptase droplet digital PCR (RT-ddPCR) for quantitative detection of infectious hematopoietic necrosis virus
Peng Jia, Maureen K. Purcell, Guang Pan, Jinjin Wang, Shifu Kan, Yin Liu, Xiaocong Zheng, Xiujie SHi, Junqiang He, Li Yu, Qunyi Hua, Tikang Lu, Wensheng Lan, James Winton, Ningyi Jin, Hong Liu
2017, Journal of Virological Methods (245) 73-80
Infectious hematopoietic necrosis virus (IHNV) is an important pathogen of salmonid fishes. A validated universal reverse transcriptase quantitative PCR (RT-qPCR) assay that can quantify levels of IHNV in fish tissues has been previously reported. In the present study, we adapted the published set of IHNV primers and probe for use...
Evaluation of laser ablation double-focusing SC-ICPMS for “common” lead isotopic measurements in silicate glasses and mineral
Aaron J. Pietruszka, Leonid A. Neymark
2017, Journal of Analytical Atomic Spectrometry (32) 1135-1154
An analytical method for the in situ measurement of “common” Pb isotope ratios in silicate glasses and minerals using a 193-nm excimer laser ablation (LA) system with a double-focusing single-collector (SC)-ICPMS is presented and evaluated as a possible alternative to multiple-collector (MC)-ICPMS. This LA-SC-ICPMS technique employs fast-scanning ion deflectors to...
The U.S. Geological Survey Monthly Water Balance Model Futures Portal
Andrew R. Bock, Lauren E. Hay, Steven L. Markstrom, Christopher Emmerich, Marian Talbert
2017, Open-File Report 2016-1212
The U.S. Geological Survey Monthly Water Balance Model Futures Portal (https://my.usgs.gov/mows/) is a user-friendly interface that summarizes monthly historical and simulated future conditions for seven hydrologic and meteorological variables (actual evapotranspiration, potential evapotranspiration, precipitation, runoff, snow water equivalent, atmospheric temperature, and streamflow) at locations across the conterminous United...
Large crater clustering tool
Jason Laura, James A. Skinner Jr., Marc A. Hunter
2017, Computers & Geosciences (105) 81-90
In this paper we present the Large Crater Clustering (LCC) tool set, an ArcGIS plugin that supports the quantitative approximation of a primary impact location from user-identified locations of possible secondary impact craters or the long-axes of clustered secondary craters. The identification of primary impact craters directly supports planetary geologic...
Arsenic and uranium in private wells in Connecticut, 2013-15
Sarah M. Flanagan, Craig J. Brown
2017, Open-File Report 2017-1046
The occurrence of arsenic and uranium in groundwater at concentrations that exceed drinking-water standards is a concern because of the potential adverse effects on human health. Some early studies of arsenic occurrence in groundwater considered anthropogenic causes, but more recent studies have focused on sources of naturally occurring arsenic to...
How do en route events around the Gulf of Mexico influence landbird populations
Emily B. Cohen, Wylie C. Barrow Jr., Jeffrey J. Buler, Jill L. Deppe, Andrew Farnsworth, Peter P. Marra, Scott R. McWilliams, David W Mehlman, R. Randy Wilson, Mark S Woodrey, Frank R. Moore
2017, The Condor (119) 327-343
Habitats around the Gulf of Mexico (GOM) provide critical resources for Nearctic–Neotropical migratory landbirds, the majority of which travel across or around the GOM every spring and fall as they migrate between temperate breeding grounds in North America and tropical wintering grounds in the Caribbean and Central and South America....
Designing ecological climate change impact assessments to reflect key climatic drivers
Helen Sofaer, Joseph J. Barsugli, Catherine S. Jarnevich, John T. Abatzoglou, Marian Talbert, Brian W. Miller, Jeffrey T. Morisette
2017, Global Change Biology (23) 2537-2553
Identifying the climatic drivers of an ecological system is a key step in assessing its vulnerability to climate change. The climatic dimensions to which a species or system is most sensitive – such as means or extremes – can guide methodological decisions for projections of ecological impacts and...
Accounting for sampling patterns reverses the relative importance of trade and climate for the global sharing of exotic plants
Helen Sofaer, Catherine S. Jarnevich
2017, Global Ecology and Biogeography (26) 669-678
AimThe distributions of exotic species reflect patterns of human-mediated dispersal, species climatic tolerances and a suite of other biotic and abiotic factors. The relative importance of each of these factors will shape how the spread of exotic species is affected by ongoing economic globalization and climate change. However, patterns of...
A rapid diagnostic test and mobile "lab in a suitcase" platform for detecting Ceratocystis spp. responsible for Rapid ‘Ōhi‘a Death
Carter T. Atkinson, William Watcher-Weatherwax, Kylle Roy, Wade P Heller, Lisa Keith
2017, Technical Report HCSU-TR082
We describe a field compatible molecular diagnostic test for two new species of Ceratocystis that infect `ōhi`a (Metrosideros polymorpha) and cause the disease commonly known as Rapid `Ōhi`a Death. The diagnostic is based on amplification of a DNA locus within the internal transcribed spacer region that separates fungal 5.8S ribosomal...
Land change monitoring, assessment, and projection (LCMAP) revolutionizes land cover and land change research
Steven Young
2017, General Information Product 172
When nature and humanity change Earth’s landscapes - through flood or fire, public policy, natural resources management, or economic development - the results are often dramatic and lasting.Wildfires can reshape ecosystems. Hurricanes with names like Sandy or Katrina will howl for days while altering the landscape for years. One growing...
Developing an effective Agassiz's Desert Tortoise monitoring program: Final report to the Coachella Valley Conservation Commission
Jeffrey E. Lovich, Shellie R. Puffer
2017, Report
Agassiz’s desert tortoise (Gopherus agassizii) is a conservation-reliant species with populations north and west of the Colorado River protected as threatened under the Endangered Species Act (Averill-Murray et al. 2012). Since it was listed under this category in 1990, a great deal has been learned about the natural history of...
Annual review 2016: Exploration review
Nick A Karl, David R. Wilburn
2017, Mining Engineering (69) 28-49
This summary of international mineral exploration activities for the year 2016 draws upon information from industry sources, published literature, SNL Metals & Mining (SNL), an offering of S&P Global Market Intelligence (New York, NY), and specialists in the U.S. Geological Survey (USGS) National Minerals Information Center. Three types of information...
Tell me a story! A plea for more compelling conference presentations
Kathryn Langin
2017, The Condor: Ornithological Applications (119) 321-326
Effective communication with other scientists is an essential component of the scientific process, underlying success in publishing papers, building collaborations, securing grants and jobs, and stimulating further research. Oral presentations at professional meetings provide an opportunity to share research findings with a relatively broad scientific audience. However, many scientists...
Diagenetic silica enrichment and late-stage groundwater activity in Gale crater, Mars
Jens Frydenvang, Patrick J. Gasda, Joel A. Hurowitz, John P. Grotzinger, Roger C. Wiens, Horton E. Newsom, Ken S. Edgett, Jessica Watkins, John C. Bridges, Sylvestre Maurice, Martin R. Fisk, Jeffrey R. Johnson, William Rapin, Nathan Stein, Sam M. Clegg, S. P. Schwenzer, C. Bedford, P. Edwards, Nicolas Mangold, Agnes Cousin, Ryan B. Anderson, Valerie Payre, David Vaniman, David Blake, Nina L. Lanza, Sanjeev Gupta, Jason K. Van Beek, Violaine Sautter, Pierre-Yves Meslin, Melissa Rice, Ralf Milliken, Ralf Gellert, Lucy Thompson, Ben C. Clark, Dawn Y. Sumner, Abigail A. Fraeman, Kjartan M Kinch, Morten B. Madsen, Igor Mitofranov, Insoo Jun, Fred J. Calef, Ashwin R. Vasavada
2017, Geophysical Research Letters (44) 4716-4724
Diagenetic silica enrichment in fracture-associated halos that crosscut lacustrine and unconformably overlying aeolian sedimentary bedrock is observed on the lower north slope of Aeolis Mons in Gale crater, Mars. The diagenetic silica enrichment is colocated with detrital silica enrichment observed in the lacustrine bedrock yet extends into a considerably younger,...
Distribution and abundance of Millicoma Dace in the Coos River Basin, Oregon
Paul D. Scheerer, James T. Peterson, Shaun Clements
2017, Northwestern Naturalist (98) 39-47
The Millicoma Dace Rhinichthys cataractae is a form of Longnose Dace endemic to the Coos River drainage in southwestern Oregon. Sparse species records in the Oregon State University Ichthyology Collection and database and infrequent recent encounters prompted surveys to assess the current status and distribution of the species. In 2014, we surveyed...
Geologic map of the northeast flank of Mauna Loa volcano, Island of Hawai'i, Hawaii
Frank A. Trusdell, John P. Lockwood
2017, Scientific Investigations Map 2932-A
SummaryMauna Loa, the largest volcano on Earth, has erupted 33 times since written descriptions became available in 1832. Some eruptions were preceded by only brief seismic unrest, while others followed several months to a year of increased seismicity.The majority of the eruptions of Mauna Loa began in the summit area...
Matching watershed and otolith chemistry to establish natal origin of an endangered desert lake sucker
Deanna D. Strohm, Phaedra E. Budy, Todd A. Crowl
2017, Transactions of the American Fisheries Society (146) 732-743
Stream habitat restoration and supplemental stocking of hatchery-reared fish have increasingly become key components of recovery plans for imperiled freshwater fish; however, determining when to discontinue stocking efforts, prioritizing restoration areas, and evaluating restoration success present a conservation challenge. In this study, we demonstrate that otolith microchemistry is an effective...
Guidelines for preparation of State water-use estimates for 2015
2017, Open-File Report 2017-1029
The U.S. Geological Survey (USGS) has estimated the use of water in the United States at 5-year intervals since 1950. This report describes the water-use categories and data elements used for the national water-use compilation conducted as part of the USGS National Water-Use Science Project. The report identifies sources of...
Spatiotemporal variability of snow depletion curves derived from SNODAS for the conterminous United States, 2004-2013
Jessica M. Driscoll, Lauren E. Hay, Andrew R. Bock
2017, Journal of the American Water Resources Association (53) 655-666
Assessment of water resources at a national scale is critical for understanding their vulnerability to future change in policy and climate. Representation of the spatiotemporal variability in snowmelt processes in continental-scale hydrologic models is critical for assessment of water resource response to continued climate change. Continental-extent hydrologic models such as...
Stable isotope analyses of oxygen (18O:17O:16O) and chlorine (37Cl:35Cl) in perchlorate: reference materials, calibrations, methods, and interferences
J.K. Bohlke, Stanley J. Mroczkowski, Neil C. Sturchio, Linnea J. Heraty, Kent W. Richman, Donald B. Sullivan, Kris N. Griffith, Baohua Gu, Paul B. Hatzinger
2017, Rapid Communications in Mass Spectrometry (31) 85-110
RationalePerchlorate (ClO4−) is a common trace constituent of water, soils, and plants; it has both natural and synthetic sources and is subject to biodegradation. The stable isotope ratios of Cl and O provide three independent quantities for ClO4− source attribution and natural attenuation studies: δ37Cl, δ18O, and δ17O (or Δ17O...
Geomorphology, denudation rates, and stream channel profiles reveal patterns of mountain building adjacent to the San Andreas fault in northern California, USA
Stephen B. DeLong, George E. Hilley, Carol S. Prentice, Christopher J. Crosby, Intan N. Yokelson
2017, GSA Bulletin (129) 732-749
Relative horizontal motion along strike-slip faults can build mountains when motion is oblique to the trend of the strike-slip boundary. The resulting contraction and uplift pose off-fault seismic hazards, which are often difficult to detect because of the poor vertical resolution of satellite geodesy and difficulty of locating offset datable...
Continued feeding on Diporeia by deepwater sculpin in Lake Huron
Patricia A. Thompson, Edward F. Roseman, Kevin M. Keeler, Timothy P. O’Brien, Dustin Bowser
2017, Environmental Biology of Fishes (100) 407-419
Monitoring changes in diets of fish is essential to understanding how food web dynamics respond to changes in native prey abundances. In the Great Lakes, Diporeia, a benthic macroinvertebrate and primary food of native benthivores, declined following the introduction of invasive Dreissena mussels and these changes were reflected in fish...
Temporal variability of foliar nutrients: responses to nitrogen deposition and prescribed fire in a temperate steppe
Xiao-Tao Lu, Sasha C. Reed, Shuang-Li Hou, Yan-Yu Hu, Hai-Wei Wei, Fu-Mei Lu, Qiang Cui, Xing Guo Han
2017, Biogeochemistry (133) 295-305
Plant nutrient concentrations and stoichiometry drive fundamental ecosystem processes, with important implications for primary production, diversity, and ecosystem sustainability. While a range of evidence exists regarding how plant nutrients vary across spatial scales, our understanding of their temporal variation remains less well understood. Nevertheless, we know nutrients regulate plant function...
