Surveillance and status of fish stocks in western Lake Erie, 2008
Michael T. Bur, William Edwards, Michael J. Porta, Martin A. Stapanian, Patrick Kocovsky
2009, Conference Paper
The Lake Erie Biological Station has conducted bottom trawl assessments of fish populations in western Lake Erie near East Harbor State Park, Ohio each summer and autumn since 1961. The catches of most age-0 forage fishes in 2008 were less than their 15-year means. Mean densities for five species exceeded...
Age, growth, mortality, and reproduction of Roughtongue bass, Pronotogrammus martinicensis 9Serranidae), in the northeastern Gulf of Mexico
Richard S. McBride, Kenneth J. Sulak, Paul E. Thurman, Adam K. Richardson
2009, Gulf of Mexico Science (27) 30-38
The inaccessibility of outer continental shelf reefs has made it difficult to investigate the biology of Pronotogrammus martinicensis, a small sea bass known to be numerous and widely distributed in such habitat. This study takes advantage of a series of cruises in the northeastern Gulf of Mexico that collected 1,485...
Status of pelagic prey fishes and pelagic macroinvertebrates in Lake Michigan, 2008
David M. Warner, Randall M. Claramunt, Jeffrey D. Holuszko, Timothy J. Desorcie
2009, Conference Paper
Acoustic surveys were conducted in late summer/early fall during the years 1992-1996 and 2001-2008 to estimate pelagic prey fish biomass in Lake Michigan. Midwater trawling during the surveys provided a measure of species and size composition of the fish community for use in scaling acoustic data and providing species-specific abundance...
Relatedness and social organization of coypus in the Argentinean pampas
J.I. Tunez, M.L. Guichon, D. Centron, A.P. Henderson, C. Callahan, M.H. Cassini
2009, Molecular Ecology (18) 147-155
Behavioural and trapping studies of the social organization of coypus have suggested the occurrence of kin groups and a polygynous mating system. We used 16 microsatellite markers to analyse parentage and relatedness relationships in two populations (J??uregui and Villa Ruiz) in the Argentinean Pampas. At J??uregui, a dominant male monopolized...
Major- and trace-element characterization, expanded distribution, and a new chronology for the latest Pleistocene Glacier Peak tephras in western North America
S.C. Kuehn, D.G. Froese, P. E. Carrara, F.F. Foit Jr., N.J.G. Pearce, P. Rotheisler
2009, Quaternary Research (71) 201-216
The Glacier Peak tephra beds are among the most widespread and arguably some of the most important late Pleistocene chronostratigraphic markers in western North America. These beds represent a series of closely-spaced Plinian and sub-Plinian eruptions from Glacier Peak, Washington. The two most widespread beds, Glacier Peak 'G' and 'B',...
Interactions among wildland fires in a long-established Sierra Nevada natural fire area
B.M. Collins, J.D. Miller, A. E. Thode, M. Kelly, J. W. van Wagtendonk, S.L. Stephens
2009, Ecosystems (12) 114-128
We investigate interactions between successive naturally occurring fires, and assess to what extent the environments in which fires burn influence these interactions. Using mapped fire perimeters and satellite-based estimates of post-fire effects (referred to hereafter as fire severity) for 19 fires burning relatively freely over a 31-year period, we demonstrate...
A mass balance mercury budget for a mine-dominated lake: Clear Lake, California
T.H. Suchanek, J. Cooke, K. Keller, S. Jorgensen, P.J. Richerson, Collin A. Eagles-Smith, E.J. Harner, D.P. Adam
2009, Water, Air, & Soil Pollution (196) 51-73
The Sulphur Bank Mercury Mine (SBMM), active intermittently from 1873–1957 and now a USEPA Superfund site, was previously estimated to have contributed at least 100 metric tons (105 kg) of mercury (Hg) into the Clear Lake aquatic ecosystem. We have confirmed this minimum estimate. To better quantify the contribution of the...
Effect of species rarity on the accuracy of species distribution models for reptiles and amphibians in southern California
J. Franklin, K.E. Wejnert, S.A. Hathaway, C.J. Rochester, Robert N. Fisher
2009, Diversity and Distributions (15) 167-177
Aim: Several studies have found that more accurate predictive models of species' occurrences can be developed for rarer species; however, one recent study found the relationship between range size and model performance to be an artefact of sample prevalence, that is, the proportion of presence versus absence observations in the...
Effects of spatial heterogeneity on butterfly species richness in Rocky Mountain National Park, CO, USA
S. Kumar, S.E. Simonson, T.J. Stohlgren
2009, Biodiversity and Conservation (18) 739-763
We investigated butterfly responses to plot-level characteristics (plant species richness, vegetation height, and range in NDVI [normalized difference vegetation index]) and spatial heterogeneity in topography and landscape patterns (composition and configuration) at multiple spatial scales. Stratified random sampling was used to collect data on butterfly species richness from seventy-six 20...
Estimating survival of precocial chicks during the prefledging period using a catch-curve analysis and count-based age-class data
C.P. McGowan, J.J. Millspaugh, M.R. Ryan, C.D. Kruse, G. Pavelka
2009, Journal of Field Ornithology (80) 79-87
Estimating reproductive success for birds with precocial young can be difficult because chicks leave nests soon after hatching and individuals or broods can be difficult to track. Researchers often turn to estimating survival during the prefledging period and, though effective, mark-recapture based approaches are not always feasible due to cost,...
The B7 family of immunoregulatory receptors: A comparative and evolutionary perspective
J.D. Hansen, L.D. Pasquier, M.-P. Lefranc, V. Lopez, A. Benmansour, P. Boudinot
2009, Molecular Immunology (46) 457-472
In mammals, T cell activation requires specific recognition of the peptide-MHC complex by the TcR and co-stimulatory signals. Important co-stimulatory receptors expressed by T cells are the molecules of the CD28 family, that regulate T cell activation, proliferation and tolerance. These receptors recognize B7s and B7-homologous (B7H) molecules that are...
Variation in strontium isotope ratios of archaeological fauna in the Midwestern United States: a preliminary study
Kristin M. Hedman, B. Brandon Curry, Thomas M. Johnson, Paul D. Fullagar, Thomas E. Emerson
2009, Journal of Archaeological Science (36) 64-73
Strontium isotope values (87Sr/86Sr) in bone and tooth enamel have been used increasingly to identify non-local individuals within prehistoric human populations worldwide. Archaeological research in the Midwestern United States has increasingly highlighted the role of population movement in affecting interregional cultural change. However, the comparatively low level of geologic variation...
Dust emission at Franklin Lake Playa, Mojave Desert (USA): Response to meteorological and hydrologic changes 2005-2008
Richard L. Reynolds, Rian Bogle, John Vogel, Harland L. Goldstein, James Yount
2009, Natural Resources and Environmental Issues (15)
Playa type, size, and setting; playa hydrology; and surface-sediment characteristics are important controls on the type and amount of atmospheric dust emitted from playas. Soft, evaporite-rich sediment develops on the surfaces of some Mojave Desert (USA) playas (wet playas), where the water table is shallow (< 4 m). These areas...
Characterizing and predicting species distributions across environments and scales: Argentine ant occurrences in the eye of the beholder
S.B. Menke, D.A. Holway, Robert N. Fisher, W. Jetz
2009, Global Ecology and Biogeography (18) 50-63
Aim: Species distribution models (SDMs) or, more specifically, ecological niche models (ENMs) are a useful and rapidly proliferating tool in ecology and global change biology. ENMs attempt to capture associations between a species and its environment and are often used to draw biological inferences, to predict potential occurrences in unoccupied...
Persistence rates and detection probabilities of bird carcasses on beaches of Unalaska Island, Alaska following the wreck of the M/V Selendang Ayu
G. Vernon Byrd, Joel H. Reynolds, Paul L. Flint
2009, Marine Ornithology: Journal of Seabird Research and Conservation (37) 197-204
Mark–recapture techniques were used to estimate persistence rates and detection probabilities of bird carcasses associated with the oil spill following the wreck of the M/V Selendang Ayu at Unalaska Island, Alaska. Only 14.6% of carcasses placed on beaches remained after 24 hours, and all carcasses that remained had been scavenged...
Continuing evolution of the Pacific-Juan de Fuca-North America slab window system-A trench-ridge-transform example from the Pacific Rim
P.A. McCrory, D.S. Wilson, R. G. Stanley
2009, Tectonophysics (464) 30-42
Many subduction margins that rim the Pacific Ocean contain complex records of Cenozoic slab-window volcanism combined with tectonic disruption of the continental margin. The series of slab windows that opened beneath California and Mexico starting about 28.5 Ma resulted from the death of a series of spreading ridge segments and...
Selenium mass balance in the Great Salt Lake, Utah
X. Diaz, W.P. Johnson, D. L. Naftz
2009, Science of the Total Environment (407) 2333-2341
A mass balance for Se in the south arm of the Great Salt Lake was developed for September 2006 to August 2007 of monitoring for Se loads and removal flows. The combined removal flows (sedimentation and volatilization) totaled to a geometric mean value of 2079??kg Se/yr, with the estimated low...
Short- and long-term implications of clearcut and two-age silviculture for conservation of breeding forest birds in the central Appalachians, USA
M.E. McDermott, P.B. Wood
2009, Biological Conservation (142) 212-220
Two-age (deferment or leave tree) harvesting is used increasingly in even-aged forest management, but long-term responses of breeding avifauna to retention of residual canopy trees have not been investigated. Breeding bird surveys completed in 1994-1996 in two-age and clearcut harvests in the central Appalachian Mountains of West Virginia, USA allowed...
Fragmentary evidence of great-earthquake subsidence during holocene emergence, Valdivia estuary, South Central Chile
A.R. Nelson, K. Kashima, L. A. Bradley
2009, Bulletin of the Seismological Society of America (99) 71-86
A reconnaissance of Holocene stratigraphy beneath fringing marshes of the Valdivia estuary, where an M 9.5 earthquake caused 1-2 m of regional coseismic subsidence in 1960, shows only fragmentary evidence of prehistoric coseismic subsidence. In most of the 150 hand-driven cores that were examined, a distinct unconformity separates 0.5-1.5 m...
Acid rock drainage and climate change
D. Kirk Nordstrom
2009, Journal of Geochemical Exploration (100) 97-104
Rainfall events cause both increases and decreases in acid and metals concentrations and their loadings from mine wastes, and unmined mineralized areas, into receiving streams based on data from 3 mines sites in the United States and other sites outside the US. Gradual increases in concentrations occur during long dry...
Assessment of electrical resistivity method to map groundwater seepage zones in heterogeneous sediments
Michael P. Gagliano, Jonathan E. Nyquist, Laura Toran, Donald O. Rosenberry
2009, Conference Paper, Symposium on the application of geophysics to engineering and environmental problems 2009
Underwater electrical‐resistivity data were collected along the southwest shore of Mirror Lake, NH, as part of a multi‐year assessment of the utility of geophysics for mapping groundwater seepage beneath lakes. We found that resistivity could locate shoreline sections where water is seeping out of the lake. A resistivity line along...
Effects of the herbicide diuron on cordgrass (Spartina foliosa) reflectance and photosynthetic parameters
S.L. Williams, A. Carranza, J. Kunzelman, S. Datta, Kathryn Kuivila
2009, Estuaries and Coasts (32) 146-157
Early indicators of salt marsh plant stress are needed to detect stress before it is manifested as changes in biomass and coverage. We explored a variety of leaf-level spectral reflectance and fluorescence variables as indicators of stress in response to the herbicide diuron. Diuron, a Photosystem II inhibitor, is heavily...
Do fish benefit from stream restoration in the Catskill Mountains?
Barry P. Baldigo, Anne G. Ernst
2009, Clear Waters (39) 54-59
Many streams across North America have been modified or restored in order to stabilize channel banks and beds; however, the effects of stream restoration on fish assemblages and stream habitat are seldom monitored, evaluated, or published. Because the impacts on ecosystems are poorly understood, subsequent restoration projects cannot build upon...
Impacts of weathered tire debris on the development of Rana sylvatica larvae
K.M. Camponelli, R.E. Casey, J.W. Snodgrass, S.M. Lev, E. R. Landa
2009, Chemosphere (74) 717-722
Highway runoff has the potential to negatively impact receiving systems including stormwater retention ponds where highway particulate matter can accumulate following runoff events. Tire wear particles, which contain about 1% Zn by mass, make up approximately one-third of the vehicle derived particulates in highway runoff and therefore may serve as...
Seasonal stability of Cladophora-associated Salmonella in Lake Michigan watersheds
M.N. Byappanahalli, R. Sawdey, S. Ishii, D.A. Shively, J.A. Ferguson, R.L. Whitman, M.J. Sadowsky
2009, Water Research (43) 806-814
The bacterial pathogens Shigella, Salmonella, Campylobacter, and shiga toxin-producing E. coli (STEC) were recently found to be associated with Cladophora growing in southern Lake Michigan. Preliminary results indicated that the Salmonella strains associated with Cladophora were genetically identical to each other. However, because of the small sample size (n =...
