Electroshocking and PIT tagging of juvenile Atlantic salmon: Are there interactive effects on growth and survival?
Douglas B. Sigourney, G.E. Horton, T.L. Dubreuil, A.M. Varaday, B. H. Letcher
2005, North American Journal of Fisheries Management (25) 1016-1021
Electroshocking and tagging of fish with passive integrated transponder (PIT) tags are two commonly used methods for conducting mark-recapture studies in freshwater environments and are frequently used in combination. We conducted an experiment to test for the effects of electroshocking, tagging, and a combination of electroshocking plus tagging on the...
Isotopic composition of Antarctic Dry Valley nitrate: Implications for NOy sources and cycling in Antarctica
G. Michalski, James G. Bockheim, C. Kendall, M. Thiemens
2005, Geophysical Research Letters (32) 1-4
Nitrates minerals from the Dry Valleys of Antarctica have been analyzed for their oxygen and nitrogen isotopic compositions. The 15N was depleted with δ15N values ranging from −9.5 to −26.2‰, whereas the 17O and 18O isotopes were highly enriched (with excess 17O) with δ18O values spanning 62–76‰ and Δ17O values...
Low summer water temperatures influence occurrence of naturalized salmonids across a mountain watershed
S.A. Mullner, W.A. Hubert
2005, North American Journal of Fisheries Management (25) 1034-1040
We investigated relationships between the absence of salmonids and low summer water temperatures across a 150-km2 Rocky Mountain watershed. A model predicting maximum July water temperature (MJT) from measurements of perennial stream length, wetted width, and midrange basin elevation was developed from temperature data obtained at 20 sites across the...
Application of wavelet analysis for monitoring the hydrologic effects of dam operation: Glen canyon dam and the Colorado River at lees ferry, Arizona
M.A. White, J. C. Schmidt, D.J. Topping
2005, River Research and Applications (21) 551-565
Wavelet analysis is a powerful tool with which to analyse the hydrologic effects of dam construction and operation on river systems. Using continuous records of instantaneous discharge from the Lees Ferry gauging station and records of daily mean discharge from upstream tributaries, we conducted wavelet analyses of the hydrologic structure...
Communicating with wildland interface communities during wildfire
Jonathan G. Taylor, Shana C. Gillette
2005, Fact Sheet 2005-3033
Communications during fire events are complex. Nevertheless, training fire information officers to plan fire communications before events, and to communicate during fires in a way that accurately and promptly informs residents in fire-affected areas, can increase effectiveness, reduce anxiety, ensure residents have accurate information on which to act, help them...
Late Pennsylvanian and early permian chondrichthyan microremains from San Salvador Patlanoaya (Puebla, Mexico)
C. Derycke-Khatir, D. Vachard, J.-M. Degardin, A. Flores de Dios, B. Buitron, M. Hansen
2005, Geobios (38) 43-55
The San Salvador Patlanoaya section (Puebla State, Mexico) is known for its richness of many fossil groups. Among them, the calcareous shells have been principally investigated. This paper deals with Missourian-Virgilian (Late Pennsylvanian) and Leonardian (late Early Permian) Mexican fish remains. A discussion about Helicoprion and related genera, is followed...
The impact of introduced round gobies (Neogobius melanostomus) on phosphorus cycling in central Lake Erie
D.B. Bunnell, T.B. Johnson, C.T. Knight
2005, Canadian Journal of Fisheries and Aquatic Sciences (62) 15-29
We used an individual-based bioenergetic model to simulate the phosphorus flux of the round goby (Neogobius melanostomus) population in central Lake Erie during 1995-2002. Estimates of round goby diet composition, growth rates, and population abundance were derived from field sampling. As an abundant introduced fish, we predicted that round gobies...
Factors affecting the occurrence of saugers in small, high-elevation rivers near the western edge of the species' natural distribution
C.J. Amadio, W.A. Hubert, Kevin Johnson, D. Oberlie, D. Dufek
2005, Transactions of the American Fisheries Society (134) 160-171
Factors affecting the occurrence of saugers Sander canadensis were studied throughout the Wind River basin, a high-elevation watershed (> 1,440 m above mean sea level) on the western periphery of the species' natural distribution in central Wyoming. Adult saugers appeared to have a contiguous distribution over 170 km of streams...
Rural land-use trends in the conterminous United States, 1950-2000
Daniel G. Brown, Kenneth M. Johnson, Thomas R. Loveland, David M. Theobald
2005, Ecological Applications (15) 1851-1863
In order to understand the magnitude, direction, and geographic distribution of land-use changes, we evaluated land-use trends in U.S. counties during the latter half of the 20th century. Our paper synthesizes the dominant spatial and temporal trends in population, agriculture, and urbanized land uses, using a variety of data sources...
Occurrence of Cyathocephalus truncatus (Cestoda) in fishes of the Great Lakes with emphasis on its occurrence in round gobies (Neogobius melanostomus) from Lake Huron
John R. P. French III, Patrick M. Muzzall, Jean V. Adams, Kendra L. Johnson, Angela E. Flores, Andrea M. Winkel
2005, Journal of Great Lakes Research (31) 405-413
Cyathocephalus truncatus is a pathogenic cestode that is common in many Laurentian Great Lakes fish species, but the depth distribution of this cestode has not been studied. Cyathocephalus truncatus has been reported from 21 fish species and one hybrid representing seven orders and nine families in Lakes Superior, Michigan, Huron, and Ontario. We...
Participant observations on environmental and social effects of the Conservation Reserve Program: Results of a national survey
A.W. Allen
2005, Technical Review 05-2
No abstract available....
Use of isotopes, age-dating, and numerical simulation to evaluate source histories and transport of NO3- to public supply wells in principal aquifers of the United States
P.B. McMahon, J.K. Bohlke, C. Brown, K. Burow, C. A. Crandall, Matthew K. Landon
2005, Conference Paper, Proceedings of the 6th International Symposium on Applied Isotope Geochemistry
No abstract available. ...
Ecology of the Lake Huron fish community, 1970-1999
Norine E. Dobiesz, David A. McLeish, Randy L. Eshenroder, James R. Bence, Lloyd C. Mohr, Mark P. Ebener, Thomas F. Nalepa, Aaron P. Woldt, James E. Johnson, Ray L. Argyle, Joseph C. Makarewicz
2005, Canadian Journal of Fisheries and Aquatic Sciences (62) 1432-1451
We review the status of the Lake Huron fish community between 1970 and 1999 and explore the effects of key stressors. Offshore waters changed little in terms of nutrient enrichment, while phosphorus levels declined in inner Saginaw Bay. Introduced mussels (Dreissena spp.) proliferated and may have caused a decline in Diporeia spp. This...
Hydrogeomorphic classification for Great Lakes coastal wetlands
Dennis A. Albert, Douglas A. Wilcox, Joel W. Ingram, Todd A. Thompson
2005, Journal of Great Lakes Research (31) 129-146
A hydrogeomorphic classification scheme for Great Lakes coastal wetlands is presented. The classification is hierarchical and first divides the wetlands into three broad hydrogeomorphic systems, lacustrine, riverine, and barrier-protected, each with unique hydrologic flow characteristics and residence time. These systems are further subdivided into finer geomorphic types based on physical...
Biogeochemical and metabolic responses to the flood pulse in a semiarid floodplain
H. M. Valett, M. A. Baker, J. A. Morrice, C. S. Crawford, M. C. Molles Jr., Clifford N. Dahm, D. L. Moyer, J. R. Thibault, L. M. Ellis
2005, Ecology (86) 220-234
Flood pulse inundation of riparian forests alters rates of nutrient retention and organic matter processing in the aquatic ecosystems formed in the forest interior. Along the Middle Rio Grande (New Mexico, USA), impoundment and levee construction have created riparian forests that differ in their inter-flood intervals (IFIs) because some floodplains...
Embryonic developmental progression in lake trout (Salvelinus namaycush) (Walbaum, 1792) and its relation to lake temperature
Jeffrey D. Allen, Glenn K. Walker, Jean V. Adams, S. Jerrine Nichols, Carol C. Edsall
2005, Journal of Great Lakes Research (31) 187-209
Developmental progression of lake trout (Salvelinus namaycush) embryos was examined with light and scanning electron microscopy. From this examination, key developmental stages were described in detail. The key developmental stages were then applied to individual lake trout egg lots incubated in constant temperatures of 2, 4, 6, 8, and 10°C....
Population genetic structure in migratory sandhill cranes and the role of Pleistocene glaciations
Kenneth L. Jones, Gary Krapu, David A. Brandt, Mary V. Ashley
2005, Molecular Ecology (14) 2645-2657
Previous studies of migratory sandhill cranes (Grus canadensis) have made significant progress explaining evolution of this group at the species scale, but have been unsuccessful in explaining the geographically partitioned variation in morphology seen on the population scale. The objectives of this study were to assess the population structure and...
Effects of biodiversity on ecosystem functioning: a consensus of current knowledge
D.U. Hooper, F. S. Chapin III, J.J. Ewel, A. Hector, P. Inchausti, S. Lavorel, J.H. Lawton, D.M. Lodge, M. Loreau, S. Naeem, B. Schmid, H. SetSlS, A.J. Symstad, J. Vandermeer, D.A. Wardle
2005, Ecological Monographs (75) 3-35
Humans are altering the composition of biological communities through a variety of activities that increase rates of species invasions and species extinctions, at all scales, from local to global. These changes in components of the Earth's biodiversity cause concern for ethical and aesthetic reasons, but they also have a strong...
Spacing and physical habitat selection patterns by peregrine falcons in central West Greenland
Catherine S Wightman, Mark R. Fuller
2005, The Wilson Bulletin (117) 226-236
We examined nest-site spacing and selection of nesting cliffs by Peregrine Falcons (Falco peregrinus) in central West Greenland. Our sample included 67 nesting cliffs that were occupied at least once between 1972 and 1999 and 38 cliffs with no known history of Peregrine Falcon occupancy. We measured 29 eyrie, cliff,...
Effects of selected polybrominated diphenyl ether flame retardants on lake trout (Salvelinus namaycush) thymocyte viability, apoptosis, and necrosis
Kelly L. Birchmeier, Kimberly A. Smith, Dora R. Passino-Reader, Leonard I. Sweet, Sergei M. Chernyak, Jean V. Adams, Geneva M. Omann
2005, Environmental Toxicology and Chemistry (24) 1518-1522
Polybrominated diphenyl ether (PBDE) flame-retardants have been identified as an emergent contaminants issue in many parts of the world. In vitro analyses were conducted to test the hypothesis that selected PBDEs congeners affect viability, apoptosis, and necrosis of thymocytes from laboratory-reared lake trout (Salvelinus namaycush). At current environmental levels (<1...
Emperor Goose Anser canagicus
Joel A. Schmutz
Janet Kear, editor(s)
2005, Book chapter, Ducks, geese, and swans
No abstract available....
Causes of mortality in sea ducks (Mergini) necropsied at the USGS-National Wildlife Health Center
Lee Skerratt, J. Christian Franson, Carol U. Meteyer, Tuula E. Hollmén
2005, Waterbirds (28) 193-207
A number of factors were identified as causes of mortality in 254 (59%) of 431 sea ducks submitted for necropsy at the USGS-National Wildlife Health Center, Madison, Wisconsin from 1975 until 2003. Bacteria causing large outbreaks of mortality were Pasteurella multocida and Clostridium botulinum Type E. Starvation was responsible for large mortality...
Trematodes associated with mangrove habitat in Puerto Rican salt marshes
Kevin D. Lafferty, R. F. Hechinger, J. Lorda, L. Soler
2005, Journal of Parasitology (91) 697-699
Batillaria minima is a common snail in the coastal estuaries of Puerto Rico. This snail is host to a variety of trematodes, the most common being Cercaria caribbea XXXI, a microphallid species that uses crabs as second intermediate hosts. The prevalence of infection was higher (7.1%) near mangroves than on mudflats...
Brown bear habituation to people - Safety, risks, and benefits
Stephen Herrero, Tom Smith, Terry D. DeBruyn, Kerry Gunther, Colleen A. Matt
2005, Wildlife Society Bulletin (33) 362-373
Recently, brown bear (Ursus arctos) viewing has increased in coastal Alaska and British Columbia, as well as in interior areas such as Yellowstone National Park. Viewing is most often being done under conditions that offer acceptable safety to both people and bears. We analyze and comment on the underlying processes...
Evidence from Opportunity’s Microscopic Imager for water on Meridiani Planum
Kenneth E. Herkenhoff, S. W. Squyres, R. Arvidson, D.S. Bass, J. F. Bell, P. Bertelsen, B. L. Ehlmann, W. Farrand, Lisa R. Gaddis, R. Greeley, J. Grotzinger, A. G. Hayes, S.F. Hviid, J. R. Johnson, B. Jolliff, K.M. Kinch, A. H. Knoll, M.B. Madsen, J.N. Maki, S. M. McLennan, H.Y. McSween, D. W. Ming, J. W. Rice Jr., L. Richter, M. Sims, P. H. Smith, Laurence A. Soderblom, Nicole Spanovich, R. Sullivan, S. Thompson, T. Wdowiak, C. Weitz, P. Whelley
2005, Science (306) 1727-1730
The Microscopic Imager on the Opportunity rover analyzed textures of soils and rocks at Meridiani Planum at a scale of 31 micrometers per pixel. The uppermost millimeter of some soils is weakly cemented, whereas other soils show little evidence of cohesion. Rock outcrops are laminated on...
