Pinedale glacial history of the upper Arkansas River valley: New moraine chronologies, modeling results, and geologic mapping
Avriel D. Schweinsberg, Jason P. Briner, Ralph R. Shroba, Joseph M. Licciardi, Eric M. Leonard, Keith A. Brugger, Charles M. Russell
2016, Book chapter, Unfolding the Geology of the West
This field-trip guide outlines the glacial history of the upper Arkansas River valley, Colorado, and builds on a previous GSA field trip to the area in 2010. The following will be presented: (1) new cosmogenic 10Be exposure ages of moraine boulders from the Pinedale and Bull Lake glaciations (Marine Isotope...
Fidelity and persistence of Ring-billed (Larus delawarensis) and Herring (Larus argentatus) gulls to wintering sites
Daniel E. Clark, Kiana K. G. Koenen, Jillian J. Whitney, Kenneth G. MacKenzie, Stephen DeStefano
2016, Waterbirds (39) 220-234
While the breeding ecology of gulls (Laridae) has been well studied, their movements and spatial organization during the non-breeding season is poorly understood. The seasonal movements, winter-site fidelity, and site persistence of Ring-billed (Larus delawarensis) and Herring (L. argentatus) gulls to wintering areas were studied from 2008–2012. Satellite transmitters were...
Late quaternary changes in lakes, vegetation, and climate in the Bonneville Basin reconstructed from sediment cores from Great Salt Lake: Chapter 11
Robert S. Thompson, Charles G. Oviatt, Jeffrey S. Honke, John McGeehin
2016, Book chapter, Developments in earth surface processes: Lake Bonneville — A scientific update
Sediment cores from Great Salt Lake (GSL) provide the basis for reconstructing changes in lakes, vegetation, and climate for the last ~ 40 cal ka. Initially, the coring site was covered by a shallow saline lake and surrounded by Artemisia steppe or steppe-tundra under a cold and dry climate. As Lake Bonneville...
Fire as an ecosystem process: Chapter 3
Jon E. Keeley, Hugh D. Safford
Harold A. Mooney, Erika S. Zavaleta, editor(s)
2016, Book chapter, Ecosystems of California
This long-anticipated reference and sourcebook for California’s remarkable ecological abundance provides an integrated assessment of each major ecosystem type—its distribution, structure, function, and management. A comprehensive synthesis of our knowledge about this biologically diverse state, Ecosystems of California covers the state from oceans to mountaintops using multiple lenses: past and...
Cascade Mountain Range in Oregon
David R. Sherrod
2016, Book chapter, The Oregon Encyclopedia
The Cascade mountain system extends from northern California to central British Columbia. In Oregon, it comprises the Cascade Range, which is 260 miles long and, at greatest breadth, 90 miles wide (fig. 1). Oregon’s Cascade Range covers roughly 17,000 square miles, or about 17 percent of the state, an...
Hematology results from experimental exposure of sandhill cranes to West Nile virus
Glenn H. Olsen
2016, Conference Paper, Proceedings of the North American Crane Workshop
West Nile virus is a deadly virus for young cranes. In testing two different vaccines on both adult sandhill cranes (Grus canadensis), we discovered that some blood parameters are altered by exposure to the virus. White blood cell counts were the most obvious, and may be used as an indicator...
In-air hearing of a diving duck: A comparison of psychoacoustic and auditory brainstem response thresholds
Sara E. Crowell, Alicia M. Wells-Berlin, Ronald E. Therrien, Sally E. Yannuzzi, Catherine E. Carr
2016, Journal of the Acoustical Society of America (139) 3001-3008
Auditory sensitivity was measured in a species of diving duck that is not often kept in captivity, the lesser scaup. Behavioral (psychoacoustics) and electrophysiological [the auditory brainstem response (ABR)] methods were used to measure in-air auditory sensitivity, and the resulting audiograms were compared. Both approaches yielded audiograms with similar U-shapes...
The swing of it: Hammock camping
Jeffrey L. Marion
2016, A.T. Journeys (Spring 2016) 12-18
Hammock camping is dramatically expanding along the Appalachian Trail and raising both questions and concerns among Trail land managers, club members, and backpackers. This article examines some of the advantages and disadvantages of hammock camping, including resource and social impacts. Some Leave No Trace hammock camping practices are included for...
Photoperiod and nesting phenology of whooping cranes at two captive sites
Glenn H. Olsen
2016, Conference Paper, Proceedings of the North American Crane Workshop
Increasing daylight is known to be a breeding stimulus in many avian species breeding in northern latitudes. This is thought to be true for cranes that breed in such latitudes including the Whooping Crane (Grus americana). For this reason, the captive breeding centers use artificial light to lengthen daylight hours,...
Acadia National Park Climate Change Scenario Planning Workshop summary
Jonathan Star, Nicholas Fisichelli, Alexander Bryan, Amanda Babson, Rebecca Cole-Will, Abraham J. Miller-Rushing
2016, Conference Paper
This report summarizes outcomes from a two-day scenario planning workshop for Acadia National Park, Maine (ACAD). The primary objective of the workshop was to help ACAD senior leadership make management and planning decisions based on up-to-date climate science and assessments of future uncertainty. The workshop was also designed as a...
Exploration and geology of the Karangahake and Rahu epithermal Au-Ag deposits, Hauraki Goldfield
Mark P. Simpson, Murray R Stevens, Jeffrey L. Mauk, Matthew C Harris, Alistair G J Stuart
2016, Book chapter, AusIMM Monograph 31: Mineral deposits of New Zealand—Exploration and research
Karangahake was the third largest gold producer in the Hauraki goldfield. In 2009, New Talisman Gold mines was granted a mining permit, and plans are underway to commence underground mine development of the Maria vein, which has a maiden Ore Reserve (consistent with the 2012 JORC Code) of 28 800...
Proceedings of the 2015 international summit on fibropapillomatosis: Global status, trends, and population impacts
Stacy A. Hargrove, Thierry M. Work, Shandell Brunson, Allen M. Foley, George H. Balazs
2016, NOAA Technical Memorandum NMFS-PIFSC-54
The 2015 International Summit on Fibropapillomatosis (FP) was convened in Honolulu, Hawaii June 11-14, 2015. Scientists from around the world were invited to present results from sea turtle monitoring and research programs as they relate to the global status, trends, and population impacts of FP on green turtles. The participants...
Estuaries: Life on the edge: Chapter 19
James E. Cloern, Patrick L. Barnard, Erin Beller, John C. Callaway, Letitia Grenier, Edwin D. Grosholz, Robin Grossinger, Kathryn Hieb, James T. Holligaugh, Noah Knowles, Martha Sutula, Samuel Veloz, Kerstin Wasson, Alison Whipple
2016, Book chapter, Ecosystems of California
No abstract available....
Volcanogenic massive sulphide and orogenic gold deposits of northern southeast Alaska
Patrick J Sack, Susan M. Karl, Nathan Steeves, J Bruce Gemmell
2016, Book
This five-day field trip visits the most significant mineral deposits in northern southeast Alaska. The trip begins and ends with regional transects in the interior Intermontane terranes around Whitehorse, Yukon, and the Insular terranes along the northern Chatham Strait region of southeast Alaska (Fig. A-1 and Fig. A-2; Plate-1). To...
By-products of porphyry copper and molybdenum deposits
David A. John, Ryan D. Taylor
Philip L. Verplanck, Murray W. Hitzman, editor(s)
2016, Book chapter, Rare earth and critical elements in ore deposits
Porphyry Cu and porphyry Mo deposits are large to giant deposits ranging up to >20 and 1.6 Gt of ore, respectively, that supply about 60 and 95% of the world’s copper and molybdenum, as well as significant amounts of gold and silver. These deposits form from hydrothermal systems that affect...
A review of single-sample-based models and other approaches for radiocarbon dating of dissolved inorganic carbon in groundwater
L. F Han, Niel Plummer
2016, Earth-Science Reviews (152) 119-142
Numerous methods have been proposed to estimate the pre-nuclear-detonation 14C content of dissolved inorganic carbon (DIC) recharged to groundwater that has been corrected/adjusted for geochemical processes in the absence of radioactive decay (14C0) - a quantity that is essential for estimation of radiocarbon age of DIC in groundwater. The models/approaches most...
Measuring the impact of invasive species on popular culture: a case study based on toy turtles from Japan
Jeffrey E. Lovich, Katsuya Yamamoto
2016, Humans and Nature (27) 1-11
The red-eared slider turtle (Trachemys scripta elegans) is native to portions of the United States of America (USA) and adjacent northeastern Mexico. The bright and colorful hatchlings have long been popular as pets globally but numerous individuals have been released into the wild establishing populations in areas well outside their...
Integrated modeling approach for fate and transport of submerged oil and oil-particle aggregates in a freshwater riverine environment
Faith A. Fitzpatrick, Rex Johnson, Zhenduo Zhu, David Waterman, Richard D. McCulloch, Earl Hayter, Marcelo H. Garcia, Michel C. Boufadel, Timothy Dekker, Jacob S. Hassan, David T. Soong, Christopher J. Hoard, Kenneth Lee
2016, Conference Paper, Proceedings of the joint federal interagency conference 2015
The Enbridge Line 6B pipeline release of diluted bitumen into the Kalamazoo River downstream of Marshall, Michigan, U.S.A., in July 2010 was one of the largest oil spills into freshwater in North American history. A portion of the oil interacted with river sediment and submerged requiring the development and implementation...
Geometallurgy of ironsand from the Waikato North Head deposit, New Zealand
Jeffrey L. Mauk, Helen A Cocker, Harold Rogers, Jamie Ogiliev, Alex B Padya
2016, Book chapter, AusIMM Monograph 31: Mineral Deposits of New Zealand—Exploration and Research
The Waikato North Head deposit produces a magnetic mineral concentrate from Quaternary sands that formed in a coastal setting in the North Island of New Zealand. Detailed examination of the magnetic mineral fraction of the different stratigraphic horizons mined at Waikato North Head shows that the youngest units yield concentrates...
Cattle grazing in wetlands
Beth A. Middleton
C. Max Finlayson, Mark Everard, Kenneth Irvine, Robert J. McInnes, Beth A. Middleton, Anne A. Van Dam, Nick C. Davidson, editor(s)
2016, Book chapter, The Wetland Book
Cattle grazing drives successional change in wetland vegetation by removing tall grasses and other vegetation. As a disturbance, cattle grazing in some ways resembles natural disturbances such as native mammal grazing and lightning-strike fire, which can support higher biodiversity in wetlands. To encourage rare and Red-Listed species, natural land managers...
Rare earth element deposits in China
Yu-Ling Xie, Zeng-qian Hou, Richard J. Goldfarb, Xiang Guo, Lei Wang
2016, Book chapter, Reviews in Economic Geology
China is the world’s leading rare earth element (REE) producer and hosts a variety of deposit types. Carbonatite- related REE deposits, the most significant deposit type, include two giant deposits presently being mined in China, Bayan Obo and Maoniuping, the first and third largest deposits of this type in the...
Addressing potential local adaptation in species distribution models: implications for conservation under climate change
Maria Helena Hallfors, Jishan Liao, Jason D. K. Dzurisin, Ralph Grundel, Marko Hyvarinen, Kevin Towle, Grace C. Wu, Jessica J. Hellmann
2016, Ecological Applications (26) 1154-1169
Species distribution models (SDMs) have been criticized for involving assumptions that ignore or categorize many ecologically relevant factors such as dispersal ability and biotic interactions. Another potential source of model error is the assumption that species are ecologically uniform in their climatic tolerances across their range. Typically, SDMs to treat...
Female sea lamprey shift orientation toward a conspecific chemical cue to escape a sensory trap
Cory O. Brant, Nicholas S. Johnson, Ke Li, Tyler J. Buchinger, Weiming Li
2016, Behavioral Ecology (27) 810-819
The sensory trap model of signal evolution hypothesizes that signalers adapt to exploit a cue used by the receiver in another context. Although exploitation of receiver biases can result in conflict between the sexes, deceptive signaling systems that are mutually beneficial drive the evolution of stable communication systems. However, female...
Water-quality effects on phytoplankton species and density and trophic state indices at Big Base and Little Base Lakes, Little Rock Air Force Base, Arkansas, June through August, 2015
Lucas Driver, Billy Justus
2016, Journal of the Arkansas Academy of Science (70) 88-95
Big Base and Little Base Lakes are located on Little Rock Air Force Base, Arkansas, and their close proximity to a dense residential population and an active military/aircraft installation make the lakes vulnerable to water-quality degradation. The U.S. Geological Survey (USGS) conducted a study from June through August 2015 to investigate the effects of water quality on...
Water-quality response to a high-elevation wildfire in the Colorado Front Range
M. Alisa Mast, Sheila F. Murphy, David W. Clow, Colin A. Penn, Graham A. Sexstone
2016, Hydrological Processes (30) 1811-1823
Water quality of the Big Thompson River in the Front Range of Colorado was studied for 2 years following a high‐elevation wildfire that started in October 2012 and burned 15% of the watershed. A combination of fixed‐interval sampling and continuous water‐quality monitors was used to examine the timing and magnitude of...
