Hyla gratiosa (barking treefrog) intestinal hernia
J.C. Mitchell, D. E. Green
2003, Herpetological Review (34) 230-231
Deformities and malformations in anurans occur in a variety of manifestations (Meteyer 2000. Field Guide to Malformations of Frogs and Toads with Radiographic Interpretations. Biol. Sci. Rep., USGS/BRD/BSR-2000-0005, 18 pp.). Most of those described in the literature are visible externally (e.g., ectromelia, brachydactyly, polydactyly, brachygnathia, kyphosis) (Ouellet et al. 1997....
Tracking spring migration of northern pintails with satellite telemetry
M. R. Miller, John Y. Takekawa, D.L. Orthmeyer, J. P. Fleskes, Michael L. Casazza, M.W. Perry
2003, Report
No abstract available at this time...
Effects of repeated TFM applications on riffle macroinvertebrate communities in four Great Lakes tributaries
John W. Weisser, Jean V. Adams, Richard J. Schuldt, Gregg A. Baldwin, Dennis S. Lavis, Jeffrey W. Slade, John W. Heinrich
2003, Journal of Great Lakes Research (29) 552-565
As part of the sea lamprey control program in the Great Lakes, a suite of about 150 sea lamprey producing streams have been regularly treated with the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) every 3 to 5 years since 1958. State, provincial, and tribal agencies in the basin supported the use of TFM...
Biochemical composition of three species of unionid mussels after emersion
Shari L. Greseth, W.G. Cope, R.G. Rada, D. L. Waller, M.R. Bartsch
2003, Journal of Molluscan Studies (69) 101-106
Freshwater mussels are emersed (exposed to air) during conservation activities such as surveys and relocations. Success of these activities depends upon the ability of mussels to survive emersion and to re-burrow in the substratum. We evaluated the acute sublethal effects of emersion on three species of unionid mussels [pocketbook, Lampsilis...
Body size and condition of male mallard during mid-winter in North Dakota, USA
R.E. Olsen, R. R. Cox Jr.
2003, Waterbirds (26) 449-456
Mallard (Anas platyrhynchos) may winter in northern areas if they have access to adequate food and open water. We compared individual body size (indexed by first principal component scores from three morphometric measurements) and body condition (body mass adjusted for body size) of male Mallard wintering in North Dakota,...
Plant abundance: the measurement and relationship with seed size
Q. Guo
2003, Oikos (101) 639-642
There are many inconsistencies in early reports describing the relationships between plant abundance and other biotic (e.g., seed size) or abiotic variables (e.g., precipitation). It has been difficult to generalize such relationships when abundance is measured differently (e.g., density, biomass, cover). This article suggests using abundance in two broad categories:...
Large-scale phytogeographical patterns in eastern Asia in relation to latitudinal and climatic gradients
H. Qian, J.-S. Song, P. Krestov, Q. Guo, Z. Wu, X. Shen, X. Guo
2003, Journal of Biogeography (30) 129-141
This paper aims at determining how different floristic elements (e.g. cosmopolitan, tropical, and temperate) change with latitude and major climate factors, and how latitude affects the floristic relationships between East Asia and the other parts of the world. The large-scale patterns of phytogeography in East Asia are strongly related to...
Athena Mars rover science investigation
S. W. Squyres, R. E. Arvidson, E.T. Baumgartner, J.F. Bell III, P. R. Christensen, S. Gorevan, K. E. Herkenhoff, G. Klingelhofer, M.B. Madsen, R.V. Morris, R. Rieder, R.A. Romero
2003, Journal of Geophysical Research E: Planets (108)
Each Mars Exploration Rover carries an integrated suite of scientific instruments and tools called the Athena science payload. The primary objective of the Athena science investigation is to explore two sites on the Martian surface where water may once have been present, and to assess past environmental conditions at those...
Temporal species richness-biomass relationships along successional gradients
Q. Guo
2003, Journal of Vegetation Science (14) 121-128
Diversity-biomass relationships are frequently reported to be hump-shaped over space at a given time. However, it is not yet clear how diversity and biomass change simultaneously and how they are related to each other over time (e.g. in succession) at one locality. This study develops a temporal model based on...
Status and distribution of the least Bell's vireo and southwestern willow flycatcher at the Cleveland National Forest in 2002
B. Kus, D. Evans, B. Langan, M.B. Mulrooney
2003, Report
No abstract available at this time...
Evaluation of oral and subcutaneous delivery of an experimental canarypox recombinant canine distemper vaccine in the Siberian polecate (Mustela eversmanni)
Jeffrey Wimsatt, Dean E. Biggins, Kim Innes, Bobbi Taylor, Della Garell
2003, Journal of Zoo and Wildlife Medicine (34) 25-35
We assessed the safety and efficacy of an experimental canarypox-vectored recombinant canine distemper virus (CDV) subunit vaccine in the Siberian polecat (Mustela eversmanni), a close relative of the black-footed ferret, (M. nigripes), an endangered species that is highly susceptible to the virus. Siberian polecats were randomized into six treatment groups....
High precision earthquake locations reveal seismogenic structure beneath Mammoth Mountain, California
Stephanie G. Prejean, Anna Stork, William L. Ellsworth, David Hill, Bruce R. Julian
2003, Geophysical Research Letters (30)
In 1989, an unusual earthquake swarm occurred beneath Mammoth Mountain that was probably associated with magmatic intrusion. To improve our understanding of this swarm, we relocated Mammoth Mountain earthquakes using a double difference algorithm. Relocated hypocenters reveal that most earthquakes occurred on two structures, a near-vertical plane at 7–9 km...
Global occurrence of tellurium-rich ferromanganese crusts and a model for the enrichment of tellurium
J.R. Hein, A. Koschinsky, A. N. Halliday
2003, Geochimica et Cosmochimica Acta (67) 1117-1127
Hydrogenetic ferromanganese oxyhydroxide crusts (Fe-Mn crusts) precipitate out of cold ambient ocean water onto hard-rock surfaces (seamounts, plateaus, ridges) at water depths of about 400 to 4000 m throughout the ocean basins. The slow-growing (mm/Ma) Fe-Mn crusts concentrate most elements above their mean...
Parasites of burbot, Lota lota, from Lake Huron, Michigan, U.S.A., with a checklist of the North American parasites of burbot
Patrick M. Muzzall, Merritt G. Gillilland III, Charles A. Bowen II, Nathaniel R. Coady, C. Robert Peebles
2003, Journal of Comparative Parasitology (70) 182-195
Forty-five adult burbot, Lota lota, collected in July 1998 from Six Fathom Bank (Six Fathom Bank Lake Trout Refuge) and Yankee Reef in Lake Huron, Michigan, U.S.A., were examined for parasites. A total of 10 parasite species infected burbot. Diplostomum sp., Eubothrium rugosum,Haplonema hamulatum, Echinorhynchus salmonis, and Trichodina sp. infected 60% or more of the burbot examined...
Disturbance, life history, and optimal management for biodiversity
Q. Guo
2003, Ambio (32) 428-430
Both frequency and intensity of disturbances in many ecosystems have been greatly enhanced by increasing human activities. As a consequence, the short-lived plant species including many exotics might have been dramatically increased in term of both richness and abundance on our planet while many long-lived species might have been lost....
Temporal variation of energy reserves in mayfly nymphs (Hexagenia spp.) from Lake St. Clair and western Erie
J.F. Cavaletto, T.F. Nalepa, D.L. Fanslow, D. W. Schloesser
2003, Freshwater Biology (48) 1726-1738
1. We analysed changes in energy reserves (lipid and glycogen) and length–weight relationships of burrowing mayflies (Hexagenia spp.) in 1997–99 to compare an established population in Lake St Clair with a recovering population in western Lake Erie of the Laurentian Great Lakes. In addition, we measured changes in water temperature and...
Ecological monitoring for assessing the state of the nearshore and open waters of the Great Lakes
Melanie A. Neilson, D. Scott Painter, Glenn Warren, Ronald A. Hites, Ilora Basu, D.V. Chip Weseloh, D. Michael Whittle, Gavin Christie, Richard Barbiero, Marc Tuchman, Ora E. Johannsson, Thomas F. Nalepa, Thomas A. Edsall, Guy Fleischer, Charles Bronte, Stephen B. Smith, Paul C. Baumann
2003, Environmental Monitoring and Assessment (88) 103-117
The Great Lakes Water Quality Agreement stipulates that the Governments of Canada and the United States are responsible for restoring and maintaining the chemical, physical and biological integrity of the waters of the Great Lakes Basin Ecosystem. Due to varying mandates and areas of expertise, monitoring to assess progress towards...
Optimizing larval assessment to support sea lamprey control in the Great Lakes
Michael J. Hansen, Jean V. Adams, Douglas W. Cuddy, Jessica M. Richards, Michael F. Fodale, Geraldine L. Larson, Dale J. Ollila, Jeffrey W. Slade, Todd B. Steeves, Robert J. Young, Adam Zerrenner
2003, Journal of Great Lakes Research (29) 766-782
Elements of the larval sea lamprey (Petromyzon marinus) assessment program that most strongly influence the chemical treatment program were analyzed, including selection of streams for larval surveys, allocation of sampling effort among stream reaches, allocation of sampling effort among habitat types, estimation of daily growth rates, and estimation of metamorphosis...
Response of larval sea lampreys (Petromyzon marinus) to pulsed DC electrical stimuli in laboratory experiments
Anjanette K. Bowen, John W. Weisser, Roger A. Bergstedt, Felix Famoye
2003, Journal of Great Lakes Research (29) 174-182
Four electrical factors that are used in pulsed DC electrofishing for larval sea lampreys (Petromyzon marinus) were evaluated in two laboratory studies to determine the optimal values to induce larval emergence over a range of water temperatures and conductivities. Burrowed larvae were exposed to combinations of pulsed DC electrical factors...
Development and implementation of an integrated program for control of sea lampreys in the St. Marys River
Larry P. Schleen, Gavin C. Christie, John W. Heinrich, Roger A. Bergstedt, Robert J. Young, Terry J. Morse, Dennis S. Lavis, Terry D. Bills, James E. Johnson, Mark P. Ebener
2003, Journal of Great Lakes Research (29) 677-693
The development and implementation of a strategy for control of sea lampreys (Petromyzon marinus) in the St. Marys River formed the basis for rehabilitation of lake trout (Salvelinus namaycush) and other fish in Lakes Huron and Michigan. The control strategy was implemented by the Great Lakes Fishery Commission (GLFC) upon...
Modeling species-abundance relationships in multi-species collections
S. Peng, Z. Yin, H. Ren, Q. Guo
2003, Acta Ecologica Sinica (23) 1590-1605
Species-abundance relationship is one of the most fundamental aspects of community ecology. Since Motomura first developed the geometric series model to describe the feature of community structure, ecologists have developed many other models to fit the species-abundance data in communities. These models can be classified into empirical and theoretical ones,...
Foreshore sand as a source of Escherichia coli in nearshore water of a Lake Michigan beach
Richard L. Whitman, Meredith B. Nevers
2003, Applied and Environmental Microbiology (69) 5555-5562
Swimming advisories due to excessive Escherichia coli concentrations are common at 63rd Street Beach, Chicago, Ill. An intensive study was undertaken to characterize the source and fate of E. coli in beach water and sand at the beach. From April through September 2000, water and sand samples were collected daily or twice daily at...
Differences in sedge fen vegetation upstream and downstream from a managed impoundment
Kurt P. Kowalski, Douglas A. Wilcox
2003, American Midland Naturalist (150) 199-220
The U.S. Fish and Wildlife Service proposed the restoration of wetlands impacted by a series of drainage ditches and pools located in an extensive undeveloped peatland in the Seney National Wildlife Refuge, Michigan. This study examined the nature and extent of degradation to the Marsh Creek wetlands caused by alteration...
Sea lamprey (Petromyzon marinus) parasite-host interactions in the Great Lakes
James R. Bence, Roger A. Bergstedt, Gavin C. Christie, Phillip A. Cochran, Mark P. Ebener, Joseph F. Koonce, Michael A. Rutter, William D. Swink
2003, Journal of Great Lakes Research (29) 253-282
Prediction of how host mortality responds to efforts to control sea lampreys (Petromyzon marinus) is central to the integrated management strategy for sea lamprey (IMSL) in the Great Lakes. A parasite-host submodel is used as part of this strategy, and this includes a type-2 multi-species functional response, a developmental response,...
Phosphorous digestibility and activity of intestinal phytase in hybrid tilapia, Oreochromis niloticus X O. aureus
M.W. La Vorgna, Y. Hafez, S. G. Hughes, T. Handwerker
2003, Journal of Applied Aquaculture (14) 89-100
Experiments were conducted to determine the degree to which phytate-bound phosphorus from plant protein sources could be used by hybrid tilapia (Oreochromis niloticus X O. aureus). Utilizing an inert marker technique with chromic oxide, hybrid tilapia in our study were effective at utilizing both inorganic and phytate phosphorus as evidenced...
