Wetland use and feeding by lesser scaup during spring migration across the upper Midwest, USA
M.J. Anteau, A. D. Afton
2009, Wetlands (29) 704-712
Low food availability and forage quality and concomitant decreased lipid reserves of lesser scaup (Aythya affinis; hereafter scaup) during spring migration in the upper Midwest may partially explain reductions in the continental population of scaup. In springs 20042005, we examined wetland use and feeding activity of scaup on 356 randomly-selected...
Home range, habitat selection, and movements of California Black Rails at tidal marshes at San Francisco Bay, California
Danika C. Tsao, John Y. Takekawa, Isa Woo, Julie L. Yee, Jules G. Evens
2009, The Condor (111) 599-610
Little is known about the movements and habitat selection of California Black Rails (Laterallus jamaicensis coturniculus) in coastal California. We captured 130 Black Rails, of which we radio-marked 48, in tidal marshes in San Francisco Bay during 2005 and 2006. Our objective was to examine their home ranges, movements, and...
Large area scene selection interface (LASSI): Methodology of selecting landsat imagery for The Global Land Survey 2005
S. Franks, J. G. Masek, R.M.K. Headley, J. Gasch, T. Arvidson
2009, Photogrammetric Engineering and Remote Sensing (75) 1287-1296
The Global Land Survey (GLS) 2005 is a cloud-free, orthorec-tified collection of Landsat imagery acquired during the 2004 to 2007 epoch intended to support global land-cover and ecological monitoring. Due to the numerous complexities in selecting imagery for the GLS2005, NASA and the U.S. Geological Survey (USGS) sponsored the development...
Nesting ecology of greater sage-grouse Centrocercus urophasianus at the eastern edge of their historic distribution
K. M. Herman-Brunson, K. C. Jensen, N. W. Kaczor, C. C. Swanson, M. A. Rumble, R. W. Klaver
2009, Wildlife Biology (15) 237-246
Greater sage-grouse Centrocercus urophasianus populations in North Dakota declined approximately 67% between 1965 and 2003, and the species is listed as a Priority Level 1 Species of Special Concern by the North Dakota Game and Fish Department. The habitat and ecology of the species at the eastern edge of its historical range...
Tailrace egress and hydraulic conditions during tests of a top spillway weir (TSW) at John Day Dam, 2008
T.L. Liedtke, C. D. Smith, R.G Tomka
2009, Report
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Differential phytosociological interactions involving male and female atriplex bonnevillensis
J. Sinclair, J.M. Emlen, M. Rinella, J. Snelgrove, D.C. Freeman
2009, Western North American Naturalist (69) 475-480
Wind-pollinated dioecious plants often exhibit spatial segregation of the sexes. This partial niche separation has most often been explored using abiotic niche axes. However, if the sexes are truly separated in space, then they are apt to encounter different plant species that may heavily affect growth and reproduction. Also, to...
The glacial/deglacial history of sedimentation in Bear Lake, Utah and Idaho
J. G. Rosenbaum, C.W. Heil Jr.
2009, Special Paper of the Geological Society of America 247-261
Bear Lake, in northeastern Utah and southern Idaho, lies in a large valley formed by an active half-graben. Bear River, the largest river in the Great Basin, enters Bear Lake Valley ???15 km north of the lake. Two 4-m-long cores provide a lake sediment record extending back ???26 cal k.y....
Estimating transition probabilities among everglades wetland communities using multistate models
A.S. Hotaling, J. Martin, W.M. Kitchens
2009, Wetlands (29) 1224-1233
In this study we were able to provide the first estimates of transition probabilities of wet prairie and slough vegetative communities in Water Conservation Area 3A (WCA3A) of the Florida Everglades and to identify the hydrologic variables that determine these transitions. These estimates can be used in management models aimed...
Pseudoloma neurophilia infections in zebrafish Danio rerio: effects of stress on survival, growth, and reproduction.
J.M. Ramsay, Virginia G. Watral, C.B. Schreck, M.L. Kent
2009, Diseases of Aquatic Organisms (88) 69-84
Pseudoloma neurophilia (Microsporidia) is a common disease of zebrafish Danio rerio, including those used as research models. We conducted a study comprised of 4 separate experiments to determine the effects of husbandry stress on preexisting and experimental P. neurophilia infections and the subsequent effects on survival, infection onset and intensity,...
Sources, sinks, and spatial ecology of cotton mice in longleaf pine stands undergoing restoration
N.W. Sharp, M.S. Mitchell, J.B. Grand
2009, Journal of Mammalogy (90) 1440-1448
The Fire and Fire Surrogate studya replicated, manipulative experimentsought the most economically and ecologically efficient way to restore the nation's fire-maintained ecosystems. As part of this study, we conducted a 3-year markrecapture study, comprising 105,000 trap-nights, to assess demographic responses of cotton mice (Peromyscus gossypinus) to Fire and Fire Surrogate...
Channel, floodplain, and wetland responses to floods and overbank sedimentation, 1846-2006, Halfway Creek Marsh, Upper Mississippi Valley, Wisconsin
F. A. Fitzpatrick, J.C. Knox, J. P. Schubauer-Berigan
2009, Special Paper of the Geological Society of America 23-42
Conversion of upland forest and prairie vegetation to agricultural land uses, following Euro-American settlement in the Upper Mississippi River System, led to accelerated runoff and soil erosion that subsequently transformed channels, floodplains, and wetlands on bottomlands. Halfway Creek Marsh, at the junction of Halfway Creek and the Mississippi River on...
Distribution and postbreeding environmental relationships of Northern leopard frogs (Rana [Lithobates] pipiens) in Washington
S.S. Germaine, D.W. Hays
2009, Western North American Naturalist (69) 537-547
Northern leopard frogs (Rana [Lithobates] pipiens) are considered sensitive, threatened, or endangered in all western states and western Canadian provinces. Historically present in eastern Washington in 6 major river drainages, leopard frogs are now only known to occur at 2 localized areas in the Crab Creek drainage in Grant County....
In situ video observations of two manefishes (perciformes: Caristiidae) in the mesopelagic zone of the northern Gulf of Mexico
M.C. Benfield, John H. Caruso, K. J. Sulak
2009, Copeia (4) 637-641
This paper describes direct video observations of two manefishes, likely Paracaristius sp., from the mesopelagic waters of the north-central Gulf of Mexico. One fish was observed with a remotely operated vehicle at a depth of 829 m by an industrial ROV as part of the SERPENT Project. The second was...
The great 2006 heat wave over California and Nevada: Signal of an increasing trend
A. Gershunov, D.R. Cayan, S.F. Iacobellis
2009, Journal of Climate (22) 6181-6203
Most of the great California-Nevada heat waves can be classified into primarily daytime or nighttime events depending on whether atmospheric conditions are dry or humid. A rash of nighttime-accentuated events in the last decade was punctuated by an unusually intense case in July 2006, which was the largest heat wave...
International year of planet earth 7. Oceans, submarine land-slides and consequent tsunamis in Canada
D. C. Mosher
2009, Geoscience Canada (36) 179-190
Canada has the longest coastline and largest continental margin of any nation in the World. As a result, it is more likely than other nations to experience marine geohazards such as submarine landslides and consequent tsunamis. Coastal landslides represent a specific threat because of their possible proximity to societal infrastructure...
Effects of megascale eruptions on Earth and Mars
T. Thordarson, M. Rampino, L. P. Keszthelyi, S. Self
2009, Special Paper of the Geological Society of America 37-53
Volcanic features are common on geologically active earthlike planets. Megascale or "super" eruptions involving >1000 Gt of magma have occurred on both Earth and Mars in the geologically recent past, introducing prodigious volumes of ash and volcanic gases into the atmosphere. Here we discuss felsic (explosive) and mafi c (flood...
A comparison of complete mitochondrial genomes of silver carp hypophthalmichthys molitrix and bighead carp hypophthalmichthys nobilis: Implications for their taxonomic relationship and phylogeny
S.-F. Li, J.-W. Xu, Q.-L. Yang, C.H. Wang, Q. Chen, D.C. Chapman, G. Lu
2009, Journal of Fish Biology (74) 1787-1803
Based upon morphological characters, Silver carp Hypophthalmichthys molitrix and bighead carp Hypophthalmichthys nobilis (or Aristichthys nobilis) have been classified into either the same genus or two distinct genera. Consequently, the taxonomic relationship of the two species at the generic level remains equivocal. This issue is addressed by sequencing complete mitochondrial...
The contemporary cement cycle of the United States
A. Kapur, H. G. Van Oss, G. Keoleian, S.E. Kesler, A. Kendall
2009, Journal of Material Cycles and Waste Management (11) 155-165
A country-level stock and flow model for cement, an important construction material, was developed based on a material flow analysis framework. Using this model, the contemporary cement cycle of the United States was constructed by analyzing production, import, and export data for different stages of the cement cycle. The United...
The Neoglacial landscape and human history of Glacier Bay, Glacier Bay National Park and Preserve, southeast Alaska, USA
C. Connor, G. Streveler, A. Post, D. Monteith, W. Howell
2009, Holocene (19) 381-393
The Neoglacial landscape of the Huna Tlingit homeland in Glacier Bay is recreated through new interpretations of the lower Bay's fjordal geomorphology, late Quaternary geology and its ethnographic landscape. Geological interpretation is enhanced by 38 radiocarbon dates compiled from published and unpublished sources, as well as 15 newly dated samples....
Beneath the veil: Plant growth form influences the strength of species richness-productivity relationships in forests
B. Oberle, J.B. Grace, J.M. Chase
2009, Global Ecology and Biogeography (18) 416-425
Aim: Species richness has been observed to increase with productivity at large spatial scales, though the strength of this relationship varies among functional groups. In forests, canopy trees shade understorey plants, and for this reason we hypothesize that species richness of canopy trees will depend on macroclimate, while species richness...
Rapid incision of the Colorado River in Glen Canyon - insights from channel profiles, local incision rates, and modeling of lithologic controls
K. L. Cook, K.X. Whipple, A.M. Heimsath, Thomas C. Hanks
2009, Earth Surface Processes and Landforms (34) 994-1010
The Colorado River system in southern Utah and northern Arizona is continuing to adjust to the baselevel fall responsible for the carving of the Grand Canyon. Estimates of bedrock incision rates in this area vary widely, hinting at the transient state of the Colorado and its tributaries. In conjunction with...
Trends in streamflow in the Yukon River Basin from 1944 to 2005 and the influence of the Pacific Decadal Oscillation
T. P. Brabets, Michelle Ann Walvoord
2009, Journal of Hydrology (371) 108-119
Streamflow characteristics in the Yukon River Basin of Alaska and Canada have changed from 1944 to 2005, and some of the change can be attributed to the two most recent modes of the Pacific Decadal Oscillation (PDO). Seasonal, monthly, and annual stream discharge data from 21 stations in the Yukon...
Estimation of avian population sizes and species richness across a boreal landscape in Alaska
Colleen M. Handel, S.A. Swanson, Debora A. Nigro, Steven M. Matsuoka
2009, Wilson Journal of Ornithology (121) 528-547
We studied the distribution of birds breeding within five ecological landforms in Yukon-Charley Rivers National Preserve, a 10,194-km2 roadless conservation unit on the Alaska-Canada border in the boreal forest zone. Passerines dominated the avifauna numerically, comprising 97% of individuals surveyed but less than half of the 115 species recorded in...
Distribution, density, and biomass of introduced small mammals in the southern mariana islands
A.S. Wiewel, A.A.Y. Adams, G.H. Rodda
2009, Pacific Science (63) 205-222
Although it is generally accepted that introduced small mammals have detrimental effects on island ecology, our understanding of these effects is frequently limited by incomplete knowledge of small mammal distribution, density, and biomass. Such information is especially critical in the Mariana Islands, where small mammal density is inversely related to...
Reservoir uncertainty, Precambrian topography, and carbon sequestration in the Mt. Simon Sandstone, Illinois Basin
H.E. Leetaru, J.H. McBride
2009, Environmental Geosciences (16) 235-243
Sequestration sites are evaluated by studying the local geological structure and confirming the presence of both a reservoir facies and an impermeable seal not breached by significant faulting. The Cambrian Mt. Simon Sandstone is a blanket sandstone that underlies large parts of Midwest United States and is this region's most...
