Patterns of growth and body condition in sea otters from the Aleutian archipelago before and after the recent population decline
K.L. Laidre, J. A. Estes, M. T. Tinker, James L. Bodkin, Daniel H. Monson, K. Schneider
2006, Journal of Animal Ecology (75) 978-989
1. Growth models for body mass and length were fitted to data collected from 1842 sea otters Enhydra lutris shot or live-captured throughout south-west Alaska between 1967 and 2004. Growth curves were constructed for each of two main year groups: 1967–71 when the population was at or near carrying capacity and 1992–97...
Family Salmonidae Truchas; Trouts and salmons
D.A. Hendrickson, J. L. Nielsen, Richard L. Mayden, S.M. Norris
R.R. Miller, W.L. Minkley, S.M. Norris, editor(s)
2006, Book chapter, Freshwater Fishes of Mexico
Composition of aeolian dust in natural traps on isolated surfaces of the central Mojave Desert - Insights to mixing, sources, and nutrient inputs
R. L. Reynolds, M. Reheis, J. Yount, P. Lamothe
2006, Journal of Arid Environments (66) 42-61
The recognition and characterization of aeolian dust in soil contribute to a better understanding of landscape and ecosystem dynamics of drylands. Results of this study show that recently deposited dust, sampled in isolated, mostly high-ground settings, is chemically and mineralogically similar on varied geologic substrates over a large area (15...
Steelhead of the south-central/southern California coast: Population characterization for recovery planning
David A. Boughton, P.B. Adams, E. Anderson, Craig Fusaro, E. Keller, Elsie Kelley, Leo Lentsch, J. L. Nielsen, Katie Perry, Helen Regan, C. Swift, Fred Watson
2006, Report
This report by the National Marine Fisheries Service applies a formal evaluation framework to the problem of delineating Oncorhynchus mykiss populations in the South-Central/Southern California Coast recovery domain, in support of recovery planning under the Endangered Species Act....
Increased levels of IgE and autoreactive, polyreactive IgG in wild rodents: implications for the hygiene hypothesis
A.P. Devalapalli, A. Lesher, K. Shieh, J.S. Solow, M.L. Everett, A.S. Edala, P. Whitt, Renee R. Long, N. Newton, W. Parker
2006, Scandinavian Journal of Immunology (64) 125-136
To probe the potential role of Th1 versus Th2 reactivity underlying the hygiene hypothesis, intrinsic levels of Th1-associated and Th2-associated antibodies in the serum of wild rodents were compared with that in various strains of laboratory rodents. Studies using rat lung antigens as a target indicated that wild rats have...
USGS/National Wildlife Health Center's Quarterly Wildlife Mortality Report
R. Sohn, K. A. Converse, G. McLaughlin
2006, Supplement to the Journal of Wildlife Diseases (42)
USGS National Wildlife Health Center's Quarterly Wildlife Mortality Report
R. Sohn, K. A. Converse, G. McLaughlin
2006, Supplement to the Journal of Wildlife Diseases (42)
USGS National Wildlife Health Center's Quartlerly Wildlife Mortality Report
K. A. Converse, G. McLaughlin, Lori Steckervetz
2006, Supplement to the Journal of Wildlife Diseases (42)
USGS National Wildlife Health Center's Quarterly Wildlife Mortality Report
K. A. Converse, R. Sohn, G. McLaughlin
2006, Supplement to the Journal of Wildlife Diseases (42)
Field responses of Prunus serotina and Asclepias syriaca to ozone around southern Lake Michigan
J. P. Bennett, E.A. Jepsen, J.A. Roth
2006, Environmental Pollution (142) 354-366
Higher ozone concentrations east of southern Lake Michigan compared to west of the lake were used to test hypotheses about injury and growth effects on two plant species. We measured approximately 1000 black cherry trees and over 3000 milkweed stems from 1999 to 2001 for this purpose. Black cherry branch...
West Nile virus antibody prevalence in wild mammals, southern Wisconsin
Douglas E. Docherty, Michael D. Samuel, C.A. Nolden, Kristina F. Egstad, Kathryn M. Griffin
2006, Emerging Infectious Diseases (12) 1982-1984
Twenty percent prevalence of West Nile virus antibody was found in free-ranging medium-sized Wisconsin mammals. No significant differences were noted in antibody prevalence with regard to sex, age, month of collection, or species. Our results suggest a similar route of infection in these mammals....
The use of artificial impoundments by two amphibian species in the Delaware Water Gap National Recreation Area
J.T. Julian, C.D. Snyder, J.A. Young
2006, Northeastern Naturalist (13) 459-468
We compared breeding activity of Ambystoma maculatum (Spotted Salamander) and Rana sylvatica (Wood Frog) in artificial impoundments to patterns in natural wetlands over a three-year period in the Delaware Water Gap National Recreation Area. Rana sylvatica were 5.6 times more likely to use natural bodies of water for breeding than...
Concentration and dry deposition of mercury species in arid south central New Mexico (2001-2002)
Colleen A. Caldwell, Philip Swartzendruber, Eric Prestbo
2006, Environmental Science & Technology (40) 7535-7540
This research was initiated to characterize atmospheric deposition of reactive gaseous mercury (RGM), particulate mercury (HgP; <2.5 μm), and gaseous elemental mercury (Hg0) in the arid lands of south central New Mexico. Two methods were field-tested to estimate dry deposition of three mercury species. A manual speciation sampling train consisting...
Mercury in soils, lakes, and fish in Voyageurs National Park (Minnesota): Importance of atmospheric deposition and ecosystem factors
J.G. Wiener, B.C. Knights, M.B. Sandheinrich, Jeffrey D. Jeremiason, M. E. Brigham, D.R. Engstrom, L. G. Woodruff, W.F. Cannon, S.J. Balogh
2006, Environmental Science & Technology (40) 6261-6268
Concentrations of methylmercury in game fish from many interior lakes in Voyageurs National Park (MN, U.S.A.) substantially exceed criteria for the protection of human health. We assessed the importance of atmospheric and geologic sources of mercury to interior lakes and watersheds within the Park and identified ecosystem factors associated with...
Intercalibration of research survey vessels on Lake Erie
J.T. Tyson, T.B. Johnson, C.T. Knight, M.T. Bur
2006, North American Journal of Fisheries Management (26) 559-570
Fish abundance indices obtained from annual research trawl surveys are an integral part of fisheries stock assessment and management in the Great Lakes. It is difficult, however, to administer trawl surveys using a single vessel-gear combination owing to the large size of these systems, the jurisdictional boundaries that bisect the...
A new Lagerstätte from the Middle Ordovician St. Peter formation in northeast Iowa, USA
Huaibao P. Liu, Robert M. McKay, Jean N. Young, Brian J. Witzke, Kathlyn J. McVey, Xiuying Liu
2006, Geology (34) 969-972
A new fossil fauna has been discovered from a recently recognized shale unit within the middle Ordovician St. Peter Formation in northeast Iowa. It contains a variety of invertebrates and vertebrates, including soft body tissues, impressions, and 3-dimensionalpreservations. The exceptional preservation reveals a new Konservat-Lagerstätte, the Winneshiek Lagerstätte, and opens...
Transport of horseshoe crab eggs by waves and swash on an estuarine beach: Implications for foraging shorebirds
K.F. Nordstrom, N.L. Jackson, D. R. Smith, R.G. Weber
2006, Estuarine, Coastal and Shelf Science (70) 438-448
The abundance of horseshoe crab eggs in the swash zone and remaining on the beach after tide levels fall was evaluated to identify how numbers of eggs available to shorebirds differ with fluctuations in spawning numbers of horseshoe crabs, wave energies and beach elevation changes. Field data were gathered 1-6...
DNA damage and external lesions in brown bullheads (Ameiurus nebulosus) from contaminated habitats
X. Yang, J. Meier, L. Chang, M. Rowan, P. C. Baumann
2006, Environmental Toxicology and Chemistry (25) 3035-3038
The Comet assay was used to compare levels of DNA damage in brown bullheads (Ameiurus nebulosus) collected from three known contaminated locations, the Cuyahoga River (OH, USA), Ashtabula River (OH, USA; both tributaries to Lake Erie, USA), and Ashumet Pond (Cape Cod, MA, USA), with brown...
Geomorphic effects of large debris flows and flash floods, northern Venezuela, 1999
M. C. Larsen, G. F. Wieczorek
2006, Zeitschrift fur Geomorphologie, Supplementband (145) 147-175
A rare, high-magnitude storm in northern Venezuela in December 1999 triggered debris flows and flash floods, and caused one of the worst natural disasters in the recorded history of the Americas. Some 15,000 people were killed. The debris flows and floods inundated coastal communities on alluvial fans at the mouths...
Profile of microflora of the posterior intestine of Chinook salmon before, during, and after administration of rations with and without erythromycin
C.M. Moffitt, S.M.A. Mobin
2006, Conference Paper, North American Journal of Aquaculture
We describe the resident heterotrophic aerobic microflora of the salmonid posterior intestine before, during, and after the administration of rations with erythromycin in a hatchery raceway environment. We compare the profiles of medicated Chinook salmon Oncorhynchus tshawytscha with those of control fish that were not fed erythromycin. The combined counts...
Age and duration of eclogite-facies metamorphism, North Qaidam HP/UHP terrane, Western China
C.G. Mattinson, J. L. Wooden, J. G. Liou, D.K. Bird, C.L. Wu
2006, American Journal of Science (306) 683-711
Amphibolite-facies para-and orthogneisses near Dulan, at the southeast end of the North Qaidam terrane, enclose minor eclogite and peridotite which record ultra-high pressure (UHP) metamorphism associated with the Early Paleozoic continental collision of the Qilian and Qaidam microplates. Field relations and coesite inclusions in zircons from paragneiss suggest that felsic,...
Survival and growth of age-0 steelhead after surgical implantation of 23-mm passive integrated transponders
D.S. Bateman, R. E. Gresswell
2006, North American Journal of Fisheries Management (26) 545-550
Little information is available on the effects of implanting 23-mm passive integrated transponder (PIT) tags in salmonids less than 90 mm fork length (FL). Using juvenile steelhead Oncorhynchus mykiss (range, 73–97 mm FL), we compared instantaneous growth rates and survival among three experimental groups: control, surgery with no tag, and surgery with...
Improving the design of acoustic and midwater trawl surveys through stratification, with an application to Lake Michigan prey fishes
J.V. Adams, R.L. Argyle, G.W. Fleischer, G.L. Curtis, R.G. Stickel
2006, North American Journal of Fisheries Management (26) 612-621
Reliable estimates of fish biomass are vital to the management of aquatic ecosystems and their associated fisheries. Acoustic and midwater trawl surveys are an efficient sampling method for estimating fish biomass in large bodies of water. To improve the precision of biomass estimates from combined acoustic and midwater trawl surveys,...
Sulfates on Mars: A systematic Raman spectroscopic study of hydration states of magnesium sulfates
A. Wang, J.J. Freeman, B.L. Jolliff, I.-M. Chou
2006, Geochimica et Cosmochimica Acta (70) 6118-6135
The martian orbital and landed surface missions, OMEGA on Mar Express and the two Mars Explorations Rovers, respectively, have yielded evidence pointing to the presence of magnesium sulfates on the martian surface. In situ identification of the hydration states of magnesium sulfates, as well as the hydration states of other...
Frictional strength of cuttings and core from SAFOD drillhole phases 1 and 2
S. Tembe, D.A. Lockner, J.G. Solum, C.A. Morrow, T.-F. Wong, Diane E. Moore
2006, Geophysical Research Letters (33)
We investigated the frictional properties of drill cuttings and core obtained from 1.85-3.1 km true vertical depth in the SAFOD scientific borehole in central California. Triaxial frictional sliding experiments were conducted on samples from primary lithologic traits and significant shear zones, including the inferred active trace of the San Andreas...
