Polar bear use of a persistent food subsidy: insights from non-invasive genetic sampling in Alaska
Elizabeth L. Peacock, Jason Herreman
2013, Ursus (24) 148-163
Remains of bowhead whales (Balaena mysticetus) harvested by Iñupiat whalers are deposited in bone piles along the coast of Alaska and have become persistent and reliable food sources for polar bears (Ursus maritimus). The importance of bone piles to individuals and the population, the patterns of use, and the number,...
Vegetation ecogeomorphology, dynamic equilibrium, and disturbance
Cliff R. Hupp, W. R. Osterkamp
2013, Book chapter, Ecogeomorphology: Volume 12 in Treatise in Geomorphology
Early ecologists understood the need to document geomorphic form and process to explain plant species distributions. Although this relationship has been acknowledged for over a century, with the exception of a few landmark papers, only the past few decades have experienced intensive research on this interdisciplinary topic. Here the authors...
Reactivation of the Archean-Proterozoic suture along the southern margin of Laurentia during the Mazatzal orogeny: Petrogenesis and tectonic implications of ca. 1.63 Ga granite in southeastern Wyoming
Daniel S. Jones, Calvin G. Barnes, Wayne R. Premo, Arthur W. Snoke
2013, Geological Society of America Bulletin (125) 164-183
The presence of ca. 1.63 Ga monzogranite (the “white quartz monzonite”) in the southern Sierra Madre, southeastern Wyoming, is anomalous given its distance from the nearest documented plutons of similar age (central Colorado) and the nearest contemporaneous tectonic margin (New Mexico). It is located immediately south of the Cheyenne belt—a...
The Cambrian-Ordovician rocks of Sonora, Mexico, and southern Arizona, southwestern margin of North America (Laurentia)
William R. Page, Alta C. Harris, John E. Repetski
James R. Derby, R.D. Fritz, S.A. Longacre, W.A. Morgan, C.A. Sternbach, editor(s)
2013, Book chapter, The great American carbonate bank: The geology and economic resources of the Cambrian-Ordovician Sauk megasequence of Laurentia
Cambrian and Ordovician shelf, platform, and basin rocks are present in Sonora, Mexico, and southern Arizona and were deposited on the southwestern continental margin of North America (Laurentia). Cambrian and Ordovician rocks in Sonora, Mexico, are mostly exposed in scattered outcrops in the northern half of the state. Their discontinuous nature results...
Mercury and selenium concentrations in biofilm, macroinvertebrates, and fish collected in the Yankee Fork of the Salmon River, Idaho, USA, and their potential effects on fish health
Darren T. Rhea, Aida M. Farag, David D. Harper, Elizabeth McConnell, William G. Brumbaugh
2013, Archives of Environmental Contamination and Toxicology (64) 130-139
The Yankee Fork is a large tributary of the Salmon River located in central Idaho, USA, with an extensive history of placer and dredge-mining activities. Concentrations of selenium (Se) and mercury (Hg) in various aquatic trophic levels were measured in the Yankee Fork during 2001 and 2002. Various measurements of...
Assessing the location and magnitude of the 20 October 1870 Charlevoix, Quebec, earthquake
John E. Ebel, Megan Dupuy, William H. Bakun
2013, Bulletin of the Seismological Society of America (103) 588-594
The Charlevoix, Quebec, earthquake of 20 October 1870 caused damage to several towns in Quebec and was felt throughout much of southeastern Canada and along the U.S. Atlantic seaboard from Maine to Maryland. Site‐specific damage and felt reports from Canadian and U.S. cities and towns were used in analyses of...
The false spring of 2012, earliest in North American record
T.R. Ault, G.M. Henebry, K. M. de Beurs, M.D. Schwartz, Julio L. Betancourt, David Moore
2013, Eos, Transactions, American Geophysical Union (94) 181-183
Phenology - the study of recurring plant and animal life cycle stages, especially their timing and relationships with weather and climate - is becoming an essential tool for documenting, communicating, and anticipating the consequences of climate variability and change. For example, March 2012 broke numerous records for warm temperatures and...
Woodland dynamics at the northern range periphery: A challenge for protected area management in a changing world
Scott L. Powell, Andrew J. Hansen, Thomas J. Rodhouse, Lisa K. Garrett, Julio L. Betancourt, Gordon H. Dicus, Meghan K. Lonneker
2013, PLoS ONE (8)
Managers of protected natural areas increasingly are confronted with novel ecological conditions and conflicting objectives to preserve the past while fostering resilience for an uncertain future. This dilemma may be pronounced at range peripheries where rates of change are accelerated and ongoing invasions often are perceived as threats to local...
Variation in clinical phenotype of human infection among genetic groups of Blastomyces dermatitidis
Jennifer K. Meece, Jennifer L. Anderson, Sarah Gruszka, Brian L. Sloss, Bradley Sullivan, Kurt D. Reed
2013, Journal of Infectious Diseases (207) 814-822
Background. Blastomyces dermatitidis, the etiologic agent of blastomycosis, has 2 genetic groups and shows varied clinical presentation, ranging from silent infections to fulminant respiratory disease and dissemination. The objective of this study was to determine whether clinical phenotype and outcomes vary based on the infecting organism's genetic group.Methods. We used microsatellites to...
Baseline-dependent responses of soil organic carbon dynamics to climate and land disturbances
Zhengxi Tan, Shuguang Liu
2013, Applied and Environmental Soil Science (2013) 1-7
Terrestrial carbon (C) sequestration through optimizing land use and management is widely considered a realistic option to mitigate the global greenhouse effect. But how the responses of individual ecosystems to changes in land use and management are related to baseline soil organic C (SOC) levels still needs to be evaluated...
Multitemporal cross-calibration of the Terra MODIS and Landsat 7 ETM+ reflective solar bands
Amit Angal, Xiaoxiong Xiong, Aisheng Wu, Gyanesh Chander, Taeyoung Choi
2013, IEEE Transactions on Geoscience and Remote Sensing (51) 1870-1882
In recent years, there has been a significant increase in the use of remotely sensed data to address global issues. With the open data policy, the data from the Moderate Resolution Imaging Spectroradiometer (MODIS) and Enhanced Thematic Mapper Plus (ETM+) sensors have become a critical component of numerous applications. These...
Book review: Economic geology: Principles and practice: Metals, minerals, coal and hydrocarbons—Introduction to formation and sustainable exploitation of mineral deposits
Eric D. Anderson
2013, Economic Geology (108) 1517-1518
This volume, available in both hardcover and paperback, is an English translation of the fifth edition of the German language text Mineralische und Energie-Rohstoffe. The book provides an extensive overview of natural resources and societal issues associated with extracting raw materials. The comprehensive list of raw materials discussed includes metals,...
An ecological perspective on the changing face of Brucella abortus in the western United States
Paul C. Cross, Eric J. Maichak, Angela Brennan, Brandon Scurlock, John C. Henningsen, Gordon Luikart
2013, OIE Revue Scientifique et Technique (32) 79-87
After a hiatus during the 1990s, outbreaks of Brucella abortus in cattle are occurring more frequently in some of the western states of the United States, namely, Montana, Wyoming and Idaho. This increase is coincident with increasing brucellosis seroprevalence in elk (Cervus elaphus), which is correlated with elk density. Vaccines...
Diablotin Pterodroma hasitata: a biography of the endangered Black-capped Petrel
Theodore R. Simons, David S. Lee, J. Christopher Haney
2013, Marine Ornithology: Journal of Seabird Research and Conservation (41) 1-43
The Black-capped Petrel Pterodroma hasitata was believed extinct throughout much of the 20th century. It is the only gadfly petrel currently known to breed in the Caribbean Basin. Now seriously endangered, the species is presumed extirpated from Martinique, Dominica, and Guadeloupe, and breeding populations currently occur only on Hispaniola and perhaps Cuba....
Estimating abundance of the Southern Hudson Bay polar bear subpopulation using aerial surveys, 2011 and 2012
Martyn E. Obbard, Kevin R. Middel, Seth P. Stapleton, Isabelle Thibault, Vincent Brodeur, Charles Jutras
2013, Wildlife Research Series 2013-01
The Southern Hudson Bay (SH) polar bear subpopulation occurs at the southern extent of the species’ range. Although capture-recapture studies indicate that abundance remained stable between 1986 and 2005, declines in body condition and survival were documented during the period, possibly foreshadowing a future decrease in abundance. To obtain a...
Appendix D: Use of wave scenarios to assess potential submerged oil mat (SOM) formation along the coast of Florida and Alabama
P. Soupy Dalyander, Joseph W. Long, Nathaniel G. Plant, David M. Thompson
2013, Operational Science Advisory Team Report III
During the Deepwater Horizon oil spill, oil in the surf zone mixed with sediment in the surf zone to form heavier-than-water sediment oil agglomerates of various size, ranging from small (cm-scale) pieces (surface residual balls, SRBs) to large mats (100-m scale, surface residue mats, SR mats). Once SR mats formed...
Predator-prey relationships and managements
Clint W. Boal, Warren B. Ballard
Paul R. Krausman, James W. Cain III, editor(s)
2013, Book chapter, Wildlife management and conservation: Contemporary principles and practices
No abstract available....
Priority data on marine and estuarine resources within northeastern National Parks: Inventory and acquisition needs
Tracy E. Hart, Hilary A. Neckles, Blaine S. Kopp
2013, Natural Resource Report NPS/NCBN/NRR—2013/612
The purpose of this project was to guide development of a strategy for the inventory and mapping of submerged natural resources associated within 10 coastal parks of the National Park Service (NPS) Northeast Region (NER; see Table 1). Priority data needs were identified by the NER Ocean Stewardship Task Force....
Integrating GIS across disciplines: how the intersection of biology and geography has influenced fisheries GIS
William L. Fisher
T. Nishida, A. E. Canton, editor(s)
2013, Book chapter, GIS/Spatial Analyses in Fishery and Aquatic Sciences, volume 5
No abstract available....
Assessing and measuring wetland hydrology
Donald O. Rosenberry, Masaki Hayashi
James T. Anderson, Craig A. Davis, editor(s)
2013, Book chapter, Wetland techniques, Volume 1 Foundations
Virtually all ecological processes that occur in wetlands are influenced by the water that flows to, from, and within these wetlands. This chapter provides the “how-to” information for quantifying the various source and loss terms associated with wetland hydrology. The chapter is organized from a water-budget perspective, with sections associated...
Riverine habitat dynamics
R. B. Jacobson
2013, Book chapter
The physical habitat template is a fundamental influence on riverine ecosystem structure and function. Habitat dynamics refers to the variation in habitat through space and time as the result of varying discharge and varying geomorphology. Habitat dynamics can be assessed at spatial scales ranging from the grain (the smallest resolution...
Geologic map of the Topock 7.5’ quadrangle, Arizona and California
Keith A. Howard, Barbara E. John, Jane E. Nielson, Julia M. G. Miller, Joseph L. Wooden
2013, Scientific Investigations Map 3236
The Topock quadrangle exposes a structurally complex part of the Colorado River extensional corridor and also exposes deposits that record landscape evolution during the history of the Colorado River. Paleoproterozoic gneisses and Mesoproterozoic granitoids and intrusive sheets are exposed through tilted cross-sectional thicknesses of many kilometers. Intruding them are a...
Comparison of DNA preservation methods for environmental bacterial community samples
Michael A. Gray, Zoe A. Pratte, Christina A. Kellogg
2013, FEMS Microbiology Ecology (83) 468-477
Field collections of environmental samples, for example corals, for molecular microbial analyses present distinct challenges. The lack of laboratory facilities in remote locations is common, and preservation of microbial community DNA for later study is critical. A particular challenge is keeping samples frozen in transit. Five nucleic acid preservation methods...
Metadata squared: enhancing its usability for volunteered geographic information and the GeoWeb
Barbara S. Poore, Eric B. Wolf
Daniel Z. Sui, Sarah Elwood, Michael F. Goodchild, editor(s)
2013, Book chapter, Crowdsourcing geographic knowledge volunteered geographic information (VGI) in theory and practice
The Internet has brought many changes to the way geographic information is created and shared. One aspect that has not changed is metadata. Static spatial data quality descriptions were standardized in the mid-1990s and cannot accommodate the current climate of data creation where nonexperts are using mobile phones and other...
Desert fires fueled by native annual forbs: Effects of fire on communities of plants and birds in the Lower Sonoran Desert of Arizona
Todd C. Esque, Robert H. Webb, Cynthia S.A. Wallace, Charles van Riper III, Chris McCreedy, Lindsay A. Smythe
2013, Southwestern Naturalist (58) 223-233
In 2005, fire ignited by humans swept from Yuma Proving Grounds into Kofa National Wildlife Refuge, Arizona, burning ca. 9,255 ha of Wilderness Area. Fuels were predominantly the native forb Plantago ovata. Large fires at low elevations were rare in the 19th and 20th centuries, and fires fueled by native...
