Snake River Basin Ecoregion: Chapter 24 in Status and trends of land change in the Western United States--1973 to 2000
Benjamin M. Sleeter
2012, Professional Paper 1794-A-24
Located in south-central Idaho, the Snake River Basin Ecoregion spans 66,063 km2 (25,507 mi2) of mostly sagebrushsteppe (Artemisia tridentata) with some areas of saltbushgreasewood (Atriplex spp. and Sarcobatus spp.) and barren lava fields (fig. 1) (Omernik, 1987; U.S. Environmental Protection Agency, 1997). The Snake River is the dominant hydrographic feature...
Wyoming Basin Ecoregion: Chapter 25 in Status and trends of land change in the Western United States--1973 to 2000
Todd Hawbaker
2012, Professional Paper 1794-A-25
The Wyoming Basin Ecoregion (Omernik 1987; U.S. Environmental Protection Agency, 1999) covers approximately 128,914 km2 (49,774 mi2) in Wyoming and parts of northwestern Colorado, northeastern Utah, southeastern Idaho, and southern Montana (fig. 1). The ecoregion is bounded on the east by the Northwestern Great Plains Ecoregion; on the south and...
Arizona/New Mexico Plateau Ecoregion: Chapter 26 in Status and trends of land change in the Western United States--1973 to 2000
Jana Ruhlman, Leila Gass, Barry Middleton
2012, Professional Paper 1794-A-26
Situated between ecoregions of distinctly different topographies and climates, the Arizona/New Mexico Plateau Ecoregion represents a large area of approximately 192,869 km2 (74,467 mi2) that stretches across northern Arizona, central and northwestern New Mexico, and parts of southwestern Colorado; in addition, a small part extends into southeastern Nevada (fig. 1)...
North Cascades Ecoregion: Chapter 14 in Status and trends of land change in the Western United States--1973 to 2000
Tamara S. Wilson
2012, Professional Paper 1794-A-14
The North Cascades Ecoregion (Omernik, 1987; U.S. Environmental Protection Agency, 1997) covers approximately 30,421 km2 (11,746 mi2) of predominantly steep, mountainous terrain, home to peaks rising more than 3,000 m, which are carved by valleys that drop below 150 m elevation (fig. 1). The unique topography in this geographically isolated...
Carbon dioxide and methane emissions from the Yukon River system
Robert G. Striegl, Mark M. Dornblaser, Cory P. McDonald, Jennifer R. Rover, Edward G. Stets
2012, Global Biogeochemical Cycles (26)
Carbon dioxide (CO2) and methane (CH4) emissions are important, but poorly quantified, components of riverine carbon (C) budgets. This is largely because the data needed for gas flux calculations are sparse and are spatially and temporally variable. Additionally, the importance of C gas emissions relative to lateral C exports is...
Eastern Cascades Slopes and Foothills Ecoregion: Chapter 12 in Status and trends of land change in the Western United States--1973 to 2000
Daniel G. Sorenson
2012, Professional Paper 1794-A-12
The Eastern Cascades Slopes and Foothills Ecoregion (Omernik, 1987; U.S. Environmental Protection Agency, 1997) covers approximately 57,329 km² (22,135 mi²) in the states of Washington, Oregon, and California (fig. 1). The ecoregion is bounded on the east by the Columbia Plateau, Blue Mountains, and Northern Basin and Range Ecoregions; on...
Northern Basin and Range Ecoregion: Chapter 23 in Status and trends of land change in the Western United States--1973 to 2000
Christopher E. Soulard
2012, Professional Paper 1794-A-23
The Northern Basin and Range Ecoregion (Omernik, 1987; U.S. Environmental Protection Agency, 1997) is located in eastern Oregon (58.7 percent), northern Nevada (20.6 percent), southwestern Idaho (14.8 percent), and northeastern California (5.9 percent), encompassing the northern extent of the hydrographic Great Basin (Grayson, 1993). The ecoregion, which covers approximately 110,039...
Scriptaid and 5-aza-2'deoxycytidine enhanced expression of pluripotent genes and in vitro developmental competence in interspecies Black-footed cat cloned embryos
M. C. Gomez, M.N. Biancardi, J.A. Jenkins, C. Dumas, J. Galiguis, G. Wang, C. Earle Pope
2012, Reproduction in Domestic Animals (47) 130-135
Somatic cell nuclear transfer offers the possibility of preserving endangered species including the black-footed cat, which is threatened with extinction. The effectiveness and efficiency of somatic cell nuclear transfer (SCNT) depends on a variety of factors, but 'inappropriate epigenetic reprogramming of the transplanted nucleus is the primary cause of the...
Columbia Plateau Ecoregion: Chapter 22 in Status and trends of land change in the Western United States--1973 to 2000
Benjamin M. Sleeter
2012, Professional Paper 1794-A-22
Located in eastern Washington and northern Oregon, the Columbia Plateau Ecoregion is characterized by sagebrush steppe and grasslands with extensive areas of dryland farming and irrigated agriculture. The ecoregion, which is approximately 90,059 km2 (34,772 mi2), is surrounded on all sides by mountainous ecoregions: to the west, the North Cascades...
Individual condition and stream temperature influence early maturation of rainbow and steelhead trout, ncorhynchus mykiss
John R. McMillan, Jason B. Dunham, Gordon H. Reeves, Justin S. Mills, Chris E. Jordan
2012, Environmental Biology of Fishes (93) 343-355
Alternative male phenotypes in salmonine fishes arise from individuals that mature as larger and older anadromous marine-migrants or as smaller and younger freshwater residents. To better understand the processes influencing the expression of these phenotypes we examined the influences of growth in length (fork length) and whole body lipid content...
Groundwater depletion and sustainability of irrigation in the US High Plains and Central Valley
Bridget R. Scanlon, Claudia C. Faunt, Laurent Longuevergne, Robert C. Reedy, William M. Alley, Virginia L. McGuire, Peter B. McMahon
2012, Proceedings of the National Academy of Sciences (109) 9320-9325
Aquifer overexploitation could significantly impact crop production in the United States because 60% of irrigation relies on groundwater. Groundwater depletion in the irrigated High Plains and California Central Valley accounts for ∼50% of groundwater depletion in the United States since 1900. A newly developed High Plains recharge map shows that...
Evaluating the negative effect of benthic egg predators on bloater recruitment in northern Lake Michigan
David B. Bunnell, Justin G. Mychek-Londer, James S. Diana, Wendylee Stott, Charles P. Madenjian
2012, Report
As the only extant deepwater cisco in Lake Michigan, bloater is currently at record low levels of abundance. Several mechanisms to regulate their recruitment have been proposed, including skewed sex ratios, predation on their larvae by adult alewife, and climatic factors during early life history stages, but none has...
Molecular detection of hematozoa infections in tundra swans relative to migration patterns and ecological conditions at breeding grounds
Andrew M. Ramey, Craig R. Ely, Joel A. Schmutz, John M. Pearce, Darryl J. Heard
2012, PLoS ONE (7)
Tundra swans (Cygnus columbianus) are broadly distributed in North America, use a wide variety of habitats, and exhibit diverse migration strategies. We investigated patterns of hematozoa infection in three populations of tundra swans that breed in Alaska using satellite tracking to infer host movement and molecular techniques to assess the...
Rapid movement of frozen debris-lobes: implications for permafrost degradation and slope instability in the south-central Brooks Range, Alaska
R.P. Daanen, G. Grosse, M.M. Darrow, T. D. Hamilton, Benjamin M. Jones
2012, Natural Hazards and Earth System Sciences (12) 1521-1537
We present the results of a reconnaissance investigation of unusual debris mass-movement features on permafrost slopes that pose a potential infrastructure hazard in the south-central Brooks Range, Alaska. For the purpose of this paper, we describe these features as frozen debris-lobes. We focus on the characterisation of frozen debris-lobes as...
High shrew diversity on Alaska's Seward Peninsula: Community assembly and environmental change
Andrew G. Hope
2012, Northwestern Naturalist (93) 101-110
In September 2010, 6 species of shrews (genus: Sorex) were collected at a single locality on the Seward Peninsula of Alaska. Such high sympatric diversity within a single mammalian genus is seldom realized. This phenomenon at high latitudes highlights complex Arctic community dynamics that reflect significant turnover through time as...
Chronic hydrocarbon exposure of harlequin ducks in areas affected by the Selendang Ayu oil spill at Unalaska Island, Alaska
Paul L. Flint, J.L. Schamber, K.A. Trust, A.K. Miles, J.D. Henderson, B.W. Wilson
2012, Environmental Toxicology and Chemistry (31) 2828-2831
We evaluated chronic exposure of harlequin ducks (Histrionicus histrionicus) to hydrocarbons associated with the 2004 M/V Selendang Ayu oil spill at Unalaska Island, Alaska. We measured levels of hepatic 7-ethoxyresorufin-O-deethylase activity (EROD) in liver biopsy samples as an indicator of hydrocarbon exposure in three oiled bays and one reference bay in...
Moderating Argos location errors in animal tracking data
David C. Douglas, Rolf Weinziert, Sarah C. Davidson, Roland Kays, Martin Wikelski, Gil Bohrer
2012, Methods in Ecology and Evolution (3) 999-1007
1. The Argos System is used worldwide to satellite-track free-ranging animals, but location errors can range from tens of metres to hundreds of kilometres. Low-quality locations (Argos classes A, 0, B and Z) dominate animal tracking data. Standard-quality animal tracking locations (Argos classes 3, 2 and 1) have larger errors...
Structure of marine predator and prey communities along environmental gradients in a glaciated fjord
Martin Renner, Mayumi L. Arimitsu, John F. Piatt
2012, Canadian Journal of Fisheries and Aquatic Sciences (69) 2029-2045
Spatial patterns of marine predator communities are influenced to varying degrees by prey distribution and environmental gradients. We examined physical and biological attributes of an estuarine fjord with strong glacier influence to determine the factors that most influence the structure of predator and prey communities. Our results suggest that some...
Age, Growth and Reproduction of the Eastern Mudminnow (Umbra pygmaea) at the Great Swamp National Wildlife Refuge, New Jersey.
Frank Panek, Judith S. Weis
2012, Northeastern Naturalist (19) 217-228
Umbra pygmaea DeKay (Eastern Mudminnow) is one of four species of Umbridae in North America. There is little published life-history information on the species within its native range, particularly on age, growth, and reproduction. This study focuses on these aspects of the life history of this fish at the Great...
Epidemiology of a Salmonella enterica subsp. Enterica serovar Typhimurium strain associated with a songbird outbreak.
David S. Blehert, Sonia M. Hernandez, Kevin Keel, Susan Sanchez, Eija Trees, Peter Gerner-Smidt
2012, Applied and Environmental Microbiology (78) 7290-7298
Salmonella enterica subsp. enterica serovar Typhimurium is responsible for the majority of salmonellosis cases worldwide. This Salmonella serovar is also responsible for die-offs in songbird populations. In 2009, there was an S. Typhimurium epizootic reported in pine siskins in the eastern United States. At the time, there was also a...
The past as prelude to the future for understanding 21st-century climate effects on Rocky Mountain Trout
Daniel J. Isaak, Clint C. Muhlfeld, Andrew S. Todd, Robert Al-chokhachy, James Roberts, Jeffrey L. Kershner, Kurt D. Fausch, Steven W. Hostetler
2012, Fisheries (37) 542-556
Bioclimatic models predict large reductions in native trout across the Rocky Mountains in the 21st century but lack details about how changes will occur. Through five case histories across the region, we explore how a changing climate has been affecting streams and the potential consequences for trout. Monitoring records show...
Population status and habitat associations of the King Rail in the midwestern United States
Jason R. Bolenbaugh, Tom Cooper, Ryan S. Brady, Karen L. Willard, David G. Krementz
2012, Waterbirds (35) 535-545
The migratory population of the King Rail (Rallus elegans) has declined dramatically during the past 50 years, emphasizing the need to document the distribution and status of this species to help guide conservation efforts. In an effort to guide King Rail breeding habitat protection and restoration, a landscape suitability index...
Alewife in the Great Lakes: Old invader - New millennium
Robert O’Gorman, Charles P. Madenjian, Edward F. Roseman, Andrew Cook, Owen T. Gorman
William W. Taylor, Abigail J. Lynch, Nancy J. Leonard, editor(s)
2012, Book chapter, Great Lakes fisheries policy and management: a binational perspective
No abstract available....
High plains playas
Loren M. Smith, David A. Haukos, Scott T. McMurry
Darold P. Batzer, Andrew H. Baldwin, editor(s)
2012, Book chapter, Wetland habitats of North America: Ecology and conservation concern
Evaluation of modal pushover-based scaling of one component of ground motion: Tall buildings
Erol Kalkan, Anil K. Chopra
2012, Earthquake Spectra (28) 1469-1493
Nonlinear response history analysis (RHA) is now increasingly used for performance-based seismic design of tall buildings. Required for nonlinear RHAs is a set of ground motions selected and scaled appropriately so that analysis results would be accurate (unbiased) and efficient (having relatively small dispersion). This paper evaluates accuracy and efficiency...
