Estimating Locations of Perennial Streams in Idaho Using a Generalized Least-Squares Regression Model of 7-Day, 2-Year Low Flows
Molly S. Wood, Alan Rea, Kenneth D. Skinner, Jon Hortness
2009, Scientific Investigations Report 2009-5015
Many State and Federal agencies use information regarding the locations of streams having intermittent or perennial flow when making management and regulatory decisions. For example, the application of some Idaho water quality standards depends on whether streams are intermittent. Idaho Administrative Code defines an intermittent stream as one having a...
Spring and Summer Spatial Distribution of Endangered Juvenile Lost River and Shortnose Suckers in Relation to Environmental Variables in Upper Klamath Lake, Oregon: 2007 Annual Report
Summer M. Burdick, Scott P. VanderKooi, Greer O. Anderson
2009, Open-File Report 2009-1043
Lost River sucker Deltistes luxatus and shortnose sucker Chasmistes brevirostris were listed as endangered in 1988 for a variety of reasons including apparent recruitment failure. Upper Klamath Lake, Oregon, and its tributaries are considered the most critical remaining habitat for these two species. Age-0 suckers are often abundant in Upper...
Persistence of dragonfly exuviae on vegetation and rock substrates
Maria A. Aliberti Lubertazzi, H. S. Ginsberg
2009, Northeastern Naturalist (16) 141-147
Surveys of dragonfly exuviae have been used to assess rare species' habitats, lake water quality status, and wetland restoration programs. Knowledge of the persistence of exuviae on various substrates is necessary to accurately interpret exuvial surveys. In 2006, we recorded exuvial persistence at defined areas in a variety of small...
Mapping Hurricane Rita inland storm tide
Charles Berenbrock, Mason Jr., Stephen F. Blanchard
2009, Journal of Flood Risk Management (2) 76-82
Flood‐inundation data are most useful for decision makers when presented in the context of maps of affected communities and (or) areas. But because the data are scarce and rarely cover the full extent of the flooding, interpolation and extrapolation of the information are needed. Many geographic information systems provide various...
Bull Trout Forage Investigations in Beulah Reservoir, Oregon - Annual Report for 2006
Brien P. Rose, Mathew G. Mesa
2009, Open-File Report 2009-1036
Beulah Reservoir on the north fork of the Malheur River in northeastern Oregon provides irrigation water to nearby farms and ranches and supports an adfluvial population of bull trout (Salvelinus confluentus), which are listed as threatened under the Endangered Species Act. Water management in Beulah Reservoir results in seasonal and...
Geochemical Analyses of Rock, Sediment, and Water from the Region In and Around the Tuba City Landfill, Tuba City, Arizona
Raymond H. Johnson, Laurie Wirt
2009, Open-File Report 2009-1020
The Tuba City Landfill (TCL) started as an unregulated waste disposal site in the 1940s and was administratively closed in 1997. Since the TCL closure, radionuclides have been detected in the shallow ground water. In 2006, the Bureau of Indian Affairs (BIA) contracted with the U.S. Geological Survey (USGS) to...
Seasonal Distribution and Abundance of Larval and Juvenile Lost River and Shortnose Suckers in Hanks Marsh, Upper Klamath National Wildlife Refuge, Upper Klamath Lake, Oregon: 2007 Annual Report
Greer O. Anderson, Alexander X. Wilkens, Summer M. Burdick, Scott P. VanderKooi
2009, Open-File Report 2009-1014
In the summer of 2007, we undertook an assessment of larval and juvenile sucker use of Hanks Marsh in Upper Klamath Lake, Oregon. This 1,200-acre marsh on the southeastern shoreline of the lake represents part of the last remaining natural emergent wetland habitat in the lake. Because of the suspected...
Calibrating biomonitors to ecological disturbance: a new technique for explaining metal effects in natural waters
Samuel N. Luoma, Daniel J. Cain, Philip S. Rainbow
2009, Integrated Environmental Assessment and Management (6) 199-209
Bioaccumulated toxic metals in tolerant biomonitors are indicators of metal bioavailability and can be calibrated against metal‐specific responses in sensitive species, thus creating a tool for defining dose–response for metals in a field setting. Dose–response curves that define metal toxicity in natural waters are rare. Demonstrating cause and effect under...
Divergence in an obligate mutualism is not explained by divergent climatic factors
W. Godsoe, Espen Strand, C.I. Smith, J.B. Yoder, T. C. Esque, O. Pellmyr
2009, New Phytologist (183) 589-599
Adaptation to divergent environments creates and maintains biological diversity, but we know little about the importance of different agents of ecological divergence. Coevolution in obligate mutualisms has been hypothesized to drive divergence, but this contention has rarely been tested against alternative ecological explanations. Here, we use a well-established example of...
Meeting reproductive demands in a dynamic upwelling system: Foraging strategies of a pursuit-diving seabird, the marbled murrelet
M.Z. Peery, S. H. Newman, C. D. Storlazzi, S. R. Beissinger
2009, Condor (111) 120-134
Seabirds maintain plasticity in their foraging behavior to cope with energy demands and foraging constraints that vary over the reproductive cycle, but behavioral studies comparing breeding and nonbreeding individuals are rare. Here we characterize how Marbled Murrelets (Brachyramphus marmoratus) adjust their foraging effort in response to changes in reproductive demands...
THE subfossil occurrence and paleoecological significance of small mammals at ankilitelo cave, southwestern Madagascar
K.M. Muldoon, D. D. De Blieux, E.L. Simons, P.S. Chatrath
2009, Journal of Mammalogy (90) 1111-1131
Small mammals are rarely reported from subfossil sites in Madagascar despite their importance for paleoenvironmental reconstruction, especially as it relates to recent ecological changes on the island. We describe the uniquely rich subfossil small mammal fauna from Ankilitelo Cave, southwestern Madagascar. The Ankilitelo fauna is dated to the late...
Palaeoseismology of the Vilariça segment of the Manteigas-Bragança fault in northeastern Portugal
Thomas Rockwell, Joao Fonseca, Chris Madden, Tim Dawson, Lewis A. Owen, Susana Vilanova, Paula Figueiredo
2009, Special Paper of the Geological Society of America 237-258
The Manteigas-Bragança fault is a major, 250-km-long, NNE-striking, sinistral strike-slip structure in northern Portugal. This fault has no historical seismicity for large earthquakes, although it may have generated moderate (M5+) earthquakes in 1751 and 1858. Evidence of continued left horizontal displacement is shown by the presence of Cenozoic pull-apart basins...
Breeding biology of the Three-striped warbler in Venezuela: A contrast between tropical and temperate parulids
W.A. Cox, T. E. Martin
2009, Wilson Journal of Ornithology (121) 667-678
We document reproductive life history traits of the Three-striped Warbler (Basileuterus tristriatus) from 146 nests in Venezuela and compare our results to data from the literature for other tropical and temperate parulid species. Mean (?? SE) clutch size was 1.96 ?? 0.03 eggs (n = 96) and fresh egg mass...
Population trends of native Hawaiian forest birds, 1976–2008: the data and statistical analyses
Richard J. Camp, P. Marcos Gorresen, Thane K. Pratt, Bethany L. Woodworth
2009, Technical Report HCSU-TR012
The Hawaii Forest Bird Interagency Database Project has produced a centralized database of forest bird survey data collected in Hawai`i since the mid-1970s. The database contains over 1.1 million bird observation records of 90 species from almost 600 surveys on the main Hawaiian Islands—a dataset including nearly all surveys from that...
Geologic columns for the ICDP-USGS Eyreville A and C cores, Chesapeake Bay impact structure: Postimpact sediments, 444 to 0 m depth
Lucy E. Edwards, David S. Powars, J.V. Browning, P.P. McLaughlin Jr., K.G. Miller, Self-Trail J.M., A.A. Kulpecz, T. Elbra
2009, Special Paper of the Geological Society of America 91-114
A 443.9-m-thick, virtually undisturbed section of postimpact deposits in the Chesapeake Bay impact structure was recovered in the Eyreville A and C cores, Northampton County, Virginia, within the "moat" of the structure's central crater. Recovered sediments are mainly fine-grained marine siliciclastics, with the exception of Pleistocene sand, clay, and gravel....
New geochronologic and stratigraphic evidence confirms the paleocene age of the dinosaur-bearing ojo alamo sandstone and animas formation in the San Juan Basin, New Mexico and Colorado
J.E. Fassett
2009, Palaeontologia Electronica (12)
Dinosaur fossils are present in the Paleocene Ojo Alamo Sandstone and Animas Formation in the San Juan Basin, New Mexico, and Colorado. Evidence for the Paleo-cene age of the Ojo Alamo Sandstone includes palynologic and paleomagnetic data. Palynologic data indicate that the entire Ojo Alamo Sandstone, including the lower dinosaur-bearing...
Land crabs as key drivers in tropical coastal forest recruitment
E.S. Lindquist, K. W. Krauss, P.T. Green, D. J. O’Dowd, P.M. Sherman, T. J. Smith III
2009, Biological Reviews (84) 203-223
Plant populations are regulated by a diverse assortment of abiotic and biotic factors that influence seed dispersal and viability, and seedling establishment and growth at the microsite. Rarely does one animal guild exert as significant an influence on different plant assemblages as land crabs. We review three tropical coastal ecosystems-mangroves,...
Sources of sediment to the coastal waters of the Southern California Bight
J.A. Warrick, K.L. Farnsworth
2009, Special Paper of the Geological Society of America 39-52
The sources of sediment to the Southern California Bight were investigated with new calculations and published records of sediment fluxes, both natural and anthropogenic. We find that rivers are by far the largest source of sediment, producing over 10 ?? 106 t/yr on average, or over 80% of the sediment...
Effects of past logging and grazing on understory plant communities in a montane Colorado forest
P.J. Fornwalt, M. R. Kaufmann, L. S. Huckaby, T.J. Stohlgren
2009, Plant Ecology (203) 99-109
Throughout Pinus ponderosa-Pseudotsuga menziesii forests of the southern Colorado Front Range, USA, intense logging and domestic grazing began at the time of Euro-American settlement in the late 1800s and continued until the early 1900s. We investigated the long-term impacts of these settlement-era activities on understory plant communities by comparing understory...
Twentieth-century decline of large-diameter trees in Yosemite National Park, California, USA
J.A. Lutz, J. W. van Wagtendonk, J.F. Franklin
2009, Forest Ecology and Management (257) 2296-2307
Studies of forest change in western North America often focus on increased densities of small-diameter trees rather than on changes in the large tree component. Large trees generally have lower rates of mortality than small trees and are more resilient to climate change, but these assumptions have rarely been examined...
Shifts in the diet of Lake Ontario alewife in response to ecosystem change
T.J. Stewart, W.G. Sprules, R. O'Gorman
2009, Journal of Great Lakes Research (35) 241-249
In the 1990s, the Lake Ontario ecosystem was dramatically altered due to continued invasions of exotic species including dreissenid mussels and predatory cladocerans. We describe the diet and biomass of prey in the stomachs of adult (≥ 109 mm TL) and sub-adult (Alosa pseudoharengus) in...
Genetic susceptibility to chronic wasting disease in free-ranging white-tailed deer: complement component C1q and Prnp polymorphisms
Julie A. Blanchong, Dennis M. Heisey, Kim T. Scribner, Scot V. Libants, Chad Johnson, Judd M. Aiken, Julia A. Langenberg, Michael D. Samuel
2009, Infection, Genetics and Evolution (9) 1329-1335
The genetic basis of susceptibility to chronic wasting disease (CWD) in free-ranging cervids is of great interest. Association studies of disease susceptibility in free-ranging populations, however, face considerable challenges including: the need for large sample sizes when disease is rare, animals of unknown pedigree create a risk of spurious results...
Geologic columns for the ICDP-USGS Eyreville A and B cores, Chesapeake Bay impact structure: Sediment-clast breccias, 1096 to 444 m depth
Lucy E. Edwards, David S. Powars, Gregory Gohn, H. Dypvik
2009, Special Paper of the Geological Society of America 51-89
The Eyreville A and B cores, recovered from the “moat” of the Chesapeake Bay impact structure, provide a thick section of sediment-clast breccias and minor stratified sediments from 1095.74 to 443.90 m. This paper discusses the...
The structure and stability of aqueous rare-earth elements in hydrothermal fluids: New results on neodymium(III) aqua and chloroaqua complexes in aqueous solutions to 500 °C and 520 MPa
Robert A. Mayanovic, Alan J. Anderson, William A. Bassett, I.-M. Chou
2009, Chemical Geology (259) 30-38
X-ray absorption spectroscopy (XAS) measurements were made at the Nd L3-edge on neodymium(III) aqua and chloroaqua complexes in low pH aqueous solutions from 25 to 500????C and up to 520??MPa. Analysis of the extended X-ray absorption fine structure of the XAS spectra measured from a 0.07??m Nd/0.16??m HNO3 aqueous solution...
Landsliding in partially saturated materials
J. W. Godt, R.L. Baum, N. Lu
2009, Geophysical Research Letters (36)
Rainfall‐induced landslides are pervasive in hillslope environments around the world and among the most costly and deadly natural hazards. However, capturing their occurrence with scientific instrumentation in a natural setting is extremely rare. The prevailing thinking on landslide initiation, particularly for those landslides that occur under intense precipitation, is that...
