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Articles 69751 - 69780 of 74540
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A Seven-Minute Sketch Of My Research, Michael R. Hill
A Seven-Minute Sketch Of My Research, Michael R. Hill
Department of Sociology: Faculty Publications
My central project is to identify, explicate, and better understand the fundamental dimensions, consequences, and possibilities of human embodiment in the social world. This project is multifaceted and is continually evolving. Virtually all of my work contributes directly to this project, including my analyses of archives, biography, “bomb talk,” bureaucracies, doctoral training, environmental art and design, epistemologies, landscapes, libraries, novels, organizations, patriarchy, pedestrians, postcards, research methodologies, scholars, surrogate parenting, terrorism, and — yes — disciplinary history. Methodologies I use include: archival excavation, bibliographic research, case studies, disguised interviews, ethological observation, experiential reflexivity, framing, genealogy, key informants, participant observation, questionnaires, site …
Sociological Novels Reviewed In Sociology And Social Research, 1925-1958, Michael R. Hill
Sociological Novels Reviewed In Sociology And Social Research, 1925-1958, Michael R. Hill
Department of Sociology: Faculty Publications
The Bibliographic Record reveals the novel as a distinctive and frequently used format for sociological inquiry and exposition. From 1925 to 1958, the pages of Sociology and Social Research identified and reviewed 140 examples of sociological novels. A bibliography of these novels is provided here, annotated with citations for the reviews in Sociology and Social Research. This “library” of sociological novels is a useful resource for research on American culture, student projects, and (not unimportantly) recreational reading that combines business with pleasure.
Under the editorship of Emory S. Bogardus, Sociology and Social Research routinely opened its pages to reviews …
Bio-Bibliography: Stephen James Meredith Brown (1881-1962), Michael R. Hill
Bio-Bibliography: Stephen James Meredith Brown (1881-1962), Michael R. Hill
Department of Sociology: Faculty Publications
Stephen James Meredith Brown, S.J., was born in County Down, Ireland, on 24 September 1881. He was educated at Clongowes Wood College and was ordained as a Jesuit in 1914. Brown also pursued studies at Tullabeg, Jersey, Paris, and Hastings. Teaching posts included Clongowes and University College. At the latter, he launched the post-graduate school of librarianship, serving on the faculty for 24 years. Brown founded the Central Catholic Library in 1922 and was its motive force for some four decades. He is remembered today as a major bibliographer of Irish literature.
Bio-Bibliography: William Clark Gordon (1865-1936), Michael R. Hill
Bio-Bibliography: William Clark Gordon (1865-1936), Michael R. Hill
Department of Sociology: Faculty Publications
William Clark Gordon was a clergyman and an early theorist of the relationships between literature and sociology. He earned a Ph.D. in the University of Chicago Divinity School in 1899 where he majored — within the School’s own Department of Sociology — in social institutions. As such, he completed his doctorate during the first full decade of Chicago’s pioneering sociological project — a fact noted but misattributed by Robert E. L. Faris (1967) to work in the University’s Department of Sociology in the Graduate School of Arts and Literature (Hill 2005). As a practicing clergyman, Gordon’s professional attentions focused on …
Effects Of Using Visual Design Principles To Group Response Options In Web Surveys, Jolene D. Smyth, Don A. Dillman, Leah M. Christian, Michael J. Stern
Effects Of Using Visual Design Principles To Group Response Options In Web Surveys, Jolene D. Smyth, Don A. Dillman, Leah M. Christian, Michael J. Stern
Department of Sociology: Faculty Publications
In this paper, we show that in Web questionnaires verbal and visual languages can be used to create groups and subgroups of information, which influence how respondents process Web questionnaires. Following Schwarz (1996; and also Schwarz, Grayson, & Knäuper, 1998) we argue that respondents act as cooperative communicators who use formal features of the questionnaire to help guide them through the survey conversation. Using data from three Web surveys of random samples of Washington State University undergraduates, we found that when response options are placed in close graphical proximity to each other and separated from other options, respondents perceive visual …
A Cool Eastern Pacific Ocean At The Close Of The Last Interglacial Complex, Daniel R. Muhs, Kathleen R. Simmons, George L. Kennedy, Kenneth R. Ludwig, Lindsey T. Groves
A Cool Eastern Pacific Ocean At The Close Of The Last Interglacial Complex, Daniel R. Muhs, Kathleen R. Simmons, George L. Kennedy, Kenneth R. Ludwig, Lindsey T. Groves
United States Geological Survey: Staff Publications
New high-precision thermal ionization mass-spectrometric (TIMS) U-series ages of solitary corals (Balanophyllia elegans) from several marine terrace localities along the California and southern Oregon coasts date to the ~80,000 yr BP high stand of sea, correlative with marine isotope substage 5a, late in the last interglacial complex. Ages of multiple corals from localities north of Point Año Nuevo (central California) and San Nicolas Island (southern California) suggest that this high sea stand could have lasted at least 8000 yr, from ~84,000 to ~76,000 yr BP. These ages overlap with those from marine deposits on tectonically stable Bermuda and …
Paleoclimatic Evidence For Future Ice-Sheet Instability And Rapid Sea-Level Rise, Jonathan T. Overpeck, Bette L. Otto-Bliesner, Gifford H. Miller, Daniel R. Muhs, Richard B. Alley, Jeffrey T. Kiehl
Paleoclimatic Evidence For Future Ice-Sheet Instability And Rapid Sea-Level Rise, Jonathan T. Overpeck, Bette L. Otto-Bliesner, Gifford H. Miller, Daniel R. Muhs, Richard B. Alley, Jeffrey T. Kiehl
United States Geological Survey: Staff Publications
Sea-level rise from melting of polar ice sheets is one of the largest potential threats of future climate change. Polar warming by the year 2100 may reach levels similar to those of 130,000 to 127,000 years ago that were associated with sea levels several meters above modern levels; both the Greenland Ice Sheet and portions of the Antarctic Ice Sheet may be vulnerable. The record of past ice-sheet melting indicates that the rate of future melting and related sea-level rise could be faster than widely thought.
Status Of Feral Pigs In Kansas And Nebraska, Philip S. Gipson, Charles D. Lee, Sam Wilson, James R. Thiele, Deke Hobbick
Status Of Feral Pigs In Kansas And Nebraska, Philip S. Gipson, Charles D. Lee, Sam Wilson, James R. Thiele, Deke Hobbick
United States Geological Survey: Staff Publications
Wild pigs have expanded their range markedly during the last 30 years. In Kansas feral pigs from domestic stock were first reported in 1994 on Fort Riley Army Base. During 2005, 2006, and 2007 the occurrence of reproducing wild pigs was confirmed on 18 sites throughout Kansas and 4 sites in Nebraska. One Nebraska population is in a county neighboring Kansas. Estimated numbers of pigs ranged from 8-10 individuals at each of 2 sites in Kansas to more than 30 on each of 3 other sites. The wild pig population in Kansas appears to be changing from 1 predominantly of …
Multi-Species Patterns Of Avian Cholera Mortality In Nebraska’S Rainwater Basin, Julie A. Blanchong, Michael D. Samuel, Gene Mack
Multi-Species Patterns Of Avian Cholera Mortality In Nebraska’S Rainwater Basin, Julie A. Blanchong, Michael D. Samuel, Gene Mack
United States Geological Survey: Staff Publications
Nebraska’s Rainwater Basin (RWB) is a key spring migration area for millions of waterfowl and other avian species. Avian cholera has been endemic in the RWB since the 1970s and in some years tens of thousands of waterfowl have died from the disease. We evaluated patterns of avian cholera mortality in waterfowl species using the RWB during the last quarter of the 20th century. Mortality patterns changed between the years before (1976–1988) and coincident with (1989–1999) the dramatic increases in lesser snow goose abundance and mortality. Lesser snow geese (Chen caerulescens caerulescens) have commonly been associated with mortality …
A Continuous 250,000 Yr Record Of Oxygen And Carbon Isotopes In Ostracode And Bulk-Sediment Carbonate From Bear Lake, Utah-Idaho, Walter E. Dean, Jordon Bright, Darrell S. Kaufman, Richard M. Forester
A Continuous 250,000 Yr Record Of Oxygen And Carbon Isotopes In Ostracode And Bulk-Sediment Carbonate From Bear Lake, Utah-Idaho, Walter E. Dean, Jordon Bright, Darrell S. Kaufman, Richard M. Forester
United States Geological Survey: Staff Publications
Oxygen and carbon isotopes from a continuous, 120-m-long, carbonate-rich core from Bear Lake, Utah-Idaho, document dramatic fluctuations in the hydrologic budget of the lake over the last 250,000 yr. Isotopic analyses of bulk sediment samples capture millennialscale variability. Ostracode calcite was analyzed from 78 levels, mainly from the upper half of the core where valves are better preserved, to compare the isotopic value of purely endogenic carbonate with the bulk sediment, which comprises both endogenic and detrital components. The long core exhibits three relatively brief intervals with abundant endogenic aragonite (50±10%) and enriched δ18O and δ13C. …
Alpersite (Mg,Cu)So4•7h2O, A New Mineral Of The Melanterite Group, And Cuprian Pentahydrite: Their Occurrence Within Mine Waste, Ronald C. Peterson, Jane M. Hammarstrom, Robert R. Seal Ii
Alpersite (Mg,Cu)So4•7h2O, A New Mineral Of The Melanterite Group, And Cuprian Pentahydrite: Their Occurrence Within Mine Waste, Ronald C. Peterson, Jane M. Hammarstrom, Robert R. Seal Ii
United States Geological Survey: Staff Publications
Alpersite, Mg0.58 Cu0.37 Zn0.02 Mn0.02 Fe0.01SO4 •7H2 O, a new mineral species with direct relevance to reactions in mine waste, occurs in a mineralogically zoned assemblage in sheltered areas at the abandoned Big Mike mine in central Nevada at a relative humidity of 65% and T = 4 °C. Blue alpersite, which is isostructural with melanterite (FeSO4 •7H2 O), is overlain by a light blue to white layer dominated by pickeringite, alunogen, and epsomite. X-ray diffraction data (MoKα radiation) from a single crystal of alpersite were refined in P21 …
Abundance And Distribution Of Selected Elements In Soils, Stream Sediments, And Selected Forage Plants From Desert Tortoise Habitats In The Mojave And Colorado Deserts, Usa, M. A. Chaffee, K. H. Berry
Abundance And Distribution Of Selected Elements In Soils, Stream Sediments, And Selected Forage Plants From Desert Tortoise Habitats In The Mojave And Colorado Deserts, Usa, M. A. Chaffee, K. H. Berry
United States Geological Survey: Staff Publications
A baseline and background chemical survey was conducted in southeastern California, USA, to identify potential sources of toxicants in natural and anthropogenically-altered habitats of the threatened desert tortoise (Gopherus agassizii). Soil, stream sediment, and plant samples were collected from six tortoise habitat study areas in the Mojave and Colorado deserts and analysed for up to 66 different elements. The chemical analyses provided new information on the abundances and distributions of selected elements in this region. Soil, stream-sediment, and plant analyses showed distinct variations in bulk chemistries from locality to locality. Variations were, in general, consistent with the many …
Mineralogical Characterization Of Protolith And Fault Rocks From The Safod Main Hole, John G. Solum, Stephen H. Hickman, David A. Lockner, Diane E. Moore, Ben A. Van Der Pluijm, James P. Evans
Mineralogical Characterization Of Protolith And Fault Rocks From The Safod Main Hole, John G. Solum, Stephen H. Hickman, David A. Lockner, Diane E. Moore, Ben A. Van Der Pluijm, James P. Evans
United States Geological Survey: Staff Publications
Washed cuttings provide a continuous record of the rocks encountered during drilling of the main hole of the San Andreas Fault Observatory at Depth (SAFOD). Both protolith and fault rocks exhibit a wide variety of mineral assemblages that reflect variations in some combination of lithology, P-T conditions, deformation mechanisms, and fluid composition and abundance. Regions of distinct neomineralization bounded by faults may record alteration associated with fluid reservoirs confined by faults. In addition, both smectites occurring as mixed-layer phases and serpentine minerals are found in association with active strands of the San Andreas Fault that were intersected during drilling, although …
A Method For Mapping Corn Using The Us Geological Survey 1992 National Land Cover Dataset, S. K. Maxwell, J. R. Nuckols, M. H. Ward
A Method For Mapping Corn Using The Us Geological Survey 1992 National Land Cover Dataset, S. K. Maxwell, J. R. Nuckols, M. H. Ward
United States Geological Survey: Staff Publications
Long-term exposure to elevated nitrate levels in community drinking water supplies has been associated with an elevated risk of several cancers including non-Hodgkin’s lymphoma, colon cancer, and bladder cancer. To estimate human exposure to nitrate, specific crop type information is needed as fertilizer application rates vary widely by crop type. Corn requires the highest application of nitrogen fertilizer of crops grown in the Midwest US.We developed a method to refine the US Geological Survey National Land Cover Dataset (NLCD) (including map and original Landsat images) to distinguish corn from other crops. Overall average agreement between the resulting corn and other …
Seasonal And Spatial Patterns Of Metals At A Restored Copper Mine Site. I. Stream Copper And Zinc, Dustin G. Bambic, Charles N. Alpers, Peter G. Green, Eileen Fanelli, Wendy K. Silk
Seasonal And Spatial Patterns Of Metals At A Restored Copper Mine Site. I. Stream Copper And Zinc, Dustin G. Bambic, Charles N. Alpers, Peter G. Green, Eileen Fanelli, Wendy K. Silk
United States Geological Survey: Staff Publications
Seasonal and spatial variations in metal concentrations and pH were found in a stream at a restored copper mine site located near a massive sulfide deposit in the Foothill copper-zinc belt of the Sierra Nevada, California. At the mouth of the stream, copper concentrations increased and pH decreased with increased streamflow after the onset of winter rain and, unexpectedly, reached extreme values 1 or 2 months after peaks in the seasonal hydrographs. In contrast, aqueous zinc and sulfate concentrations were highest during low-flow periods. Spatial variation was assessed in 400 m of reach encompassing an acidic, metal-laden seep. At this …
Use Of Mammal Manure By Nesting Burrowing Owls: A Test Of Four Functional Hypotheses, Matthew D. Smith, Courtney J. Conway
Use Of Mammal Manure By Nesting Burrowing Owls: A Test Of Four Functional Hypotheses, Matthew D. Smith, Courtney J. Conway
United States Geological Survey: Staff Publications
Animals have evolved an impressive array of behavioural traits to avoid depredation. Olfactory camouflage of conspicuous odours is a strategy to avoid depredation that has been implicated only in a few species of birds. Burrowing owls, Athene cunicularia, routinely collect dried manure from mammals and scatter it in their nest chamber, in the tunnel leading to their nest and at the entrance to their nesting burrow. This unusual behaviour was thought to reduce nest depredation by concealing the scent of adults and juveniles, but a recent study suggests that manure functions to attract arthropod prey. However, burrowing owls routinely …
Landscape Context Mediates Influence Of Local Food Abundance On Wetland Use By Wintering Shorebirds In An Agricultural Valley, Oriane W. Taft, Susan M. Haig
Landscape Context Mediates Influence Of Local Food Abundance On Wetland Use By Wintering Shorebirds In An Agricultural Valley, Oriane W. Taft, Susan M. Haig
United States Geological Survey: Staff Publications
While it is widely understood that local abundance of benthic invertebrates can greatly influence the distribution and abundance of wetland birds, no studies have examined if wetland landscape context can mediate this relationship. We studied the influence of wetland food abundance and landscape context on use of agricultural wetlands by wintering dunlin (Calidris alpina) and killdeer (Charadrius vociferus) in the Willamette Valley of Oregon, USA, over two winters (1999–2000, 2000–2001) of differing rainfall and subsequent habitat distribution. We monitored bird use (frequency of occurrence and abundance) at a sample of wetlands differing in local food abundance …
Comprehensive Genetic Analyses Reveal Evolutionary Distinction Of A Mouse (Zapus Hudsonius Preblei) Proposed For Delisting From The Us Endangered Species Act, Tim L. King, John F. Switzer, Cheryl L. Morrison, Michael S. Eackles, Colleen C. Young, Barbara A. Lubinski, Paul Cryan
Comprehensive Genetic Analyses Reveal Evolutionary Distinction Of A Mouse (Zapus Hudsonius Preblei) Proposed For Delisting From The Us Endangered Species Act, Tim L. King, John F. Switzer, Cheryl L. Morrison, Michael S. Eackles, Colleen C. Young, Barbara A. Lubinski, Paul Cryan
United States Geological Survey: Staff Publications
Zapus hudsonius preblei, listed as threatened under the US Endangered Species Act (ESA), is one of 12 recognized subspecies of meadow jumping mice found in North America. Recent morphometric and phylogenetic comparisons among Z. h. preblei and neighbouring conspecifics questioned the taxonomic status of selected subspecies, resulting in a proposal to delist the Z. h. preblei from the ESA. We present additional analyses of the phylogeographic structure within Z. hudsonius that calls into question previously published data (and conclusions) and confirms the original taxonomic designations. A survey of 21 microsatellite DNA loci and 1380 base pairs from two mitochondrial …
A Spatially Explicit Decision Support Model For Restoration Of Forest Bird Habitat, Daniel J. Twedt, William B. Uihlein Iii, A. Blaine Elliott
A Spatially Explicit Decision Support Model For Restoration Of Forest Bird Habitat, Daniel J. Twedt, William B. Uihlein Iii, A. Blaine Elliott
United States Geological Survey: Staff Publications
The historical area of bottomland hardwood forest in the Mississippi Alluvial Valley has been reduced by >75%. Agricultural production was the primary motivator for deforestation; hence, clearing deliberately targeted higher and drier sites. Remaining forests are highly fragmented and hydrologically altered, with larger forest fragments subject to greater inundation, which has negatively affected many forest bird populations. We developed a spatially explicit decision support model, based on a Partners in Flight plan for forest bird conservation, that prioritizes forest restoration to reduce forest fragmentation and increase the area of forest core (interior forest >1 km from “hostile” edge). Our primary …
Long-Term Population Monitoring: Lessons Learned From An Endangered Passerine In Hawai‘I, Luanne Johnson, Richard J. Camp, Kevin W. Brinck, Paul C. Banko
Long-Term Population Monitoring: Lessons Learned From An Endangered Passerine In Hawai‘I, Luanne Johnson, Richard J. Camp, Kevin W. Brinck, Paul C. Banko
United States Geological Survey: Staff Publications
Obtaining reliable population estimates is crucial to monitoring endangered species and developing recovery strategies. The palila (Loxioides bailleui) is an endangered seed-eating Hawaiian honeycreeper restricted to the subalpine forests of Mauna Kea, a volcano on the island of Hawai‘i, USA. The species is vulnerable to extinction primarily because >90% of the population is concentrated in <30 km2 of habitat on the western slope of this high, dormant volcano. Annual surveys of the palila population have been conducted for ecological, legal, and other purposes since 1980. Because refinements to sampling protocols and analytical methods have evolved, we examined means of …30>
Sex Determination Of Pohnpei Micronesian Kingfishers Using Morphological And Molecular Genetic Techniques, Dylan C. Kesler, Iara F. Lopes, Susan M. Haig
Sex Determination Of Pohnpei Micronesian Kingfishers Using Morphological And Molecular Genetic Techniques, Dylan C. Kesler, Iara F. Lopes, Susan M. Haig
United States Geological Survey: Staff Publications
Conservation-oriented studies of Micronesian Kingfishers (Todiramphus cinnamominus) have been hindered by a lack of basic natural history information, despite the status of the Guam subspecies (T. c. cinnamominus) as one of the most endangered species in the world. We used tissue samples and morphometric measures from museum specimens and wild-captured Pohnpei Micronesian Kingfishers (T. c. reichenbachii) to develop methods for sex determination. We present a modified molecular protocol and a discriminant function that yields the probability that a particular individual is male or female. Our results revealed that females were significantly larger than males, …
Modeling Approaches In Avian Conservation And The Role Of Field Biologists, Steven R. Beissinger, Jeffrey R. Walters, Donald G. Catanzaro, Kimberly G. Smith, John B. Dunning Jr., Susan M. Haig, Barry R. Noon, Bradley M. Stith
Modeling Approaches In Avian Conservation And The Role Of Field Biologists, Steven R. Beissinger, Jeffrey R. Walters, Donald G. Catanzaro, Kimberly G. Smith, John B. Dunning Jr., Susan M. Haig, Barry R. Noon, Bradley M. Stith
United States Geological Survey: Staff Publications
This review grew out of our realization that models play an increasingly important role in conservation but are rarely used in the research of most avian biologists. Modelers are creating models that are more complex and mechanistic and that can incorporate more of the knowledge acquired by field biologists. Such models require field biologists to provide more specific information, larger sample sizes, and sometimes new kinds of data, such as habitat-specific demography and dispersal information. Field biologists need to support model development by testing key model assumptions and validating models. The best conservation decisions will occur where cooperative interaction enables …
Renewing The Conservation Commitment, Frank W. Davis, Dale D. Goble, J. Michael Scott
Renewing The Conservation Commitment, Frank W. Davis, Dale D. Goble, J. Michael Scott
United States Geological Survey: Staff Publications
As we write this in early 2005 there are several ESA-related pieces of legislation pending before Congress. Most of the proposed legislation is championed by Republican leaders from western states, who promise to strengthen the use of science or ensure fairer treatment of private landowners. Ir has become a perennial drama on the American political stage: "conservatives" rally to rein in a law that they believe has reached too far and "conservationists" mobilize ro defend the law that they believe offers the best ho pe for protecting biodiversity from relentless economic exploitation. There is much posturing, finger pointing, and, ultimately, …
Introduction To "The Endangered Species Act At Thirty, Volume 2", Frank W. Davis, J. Michael Scott, Dale D. Goble
Introduction To "The Endangered Species Act At Thirty, Volume 2", Frank W. Davis, J. Michael Scott, Dale D. Goble
United States Geological Survey: Staff Publications
More than thirty years after its passage, the Endangered Species Act (ESA) of 1973 continues to be a corners tone of U.S. biodiversity policy and among our most powerful environmentallaws. The ESA set the nation's biodiversity conservation policy on a path that emphasized species-based conservation and triggered action only when a species faced imminent extinction. However, promoting recovery has proven more challenging than the original designers of the law anticipated. The number of listed species has mushroomed from 78 in 1973 to 1,267 in 2005, while in that time only 13 species have recovered sufficiently to be removed from the …
The National Wildlife Refuge System, Robert P. Davison, Alessandra Falcucci, Luigi Maiorano, J. Michael Scott
The National Wildlife Refuge System, Robert P. Davison, Alessandra Falcucci, Luigi Maiorano, J. Michael Scott
United States Geological Survey: Staff Publications
The National Wildlife Refuge System (NWRS) has played a key role in conserving at-risk species from its beginnings in 1903 when President Theodore Roosevelt established apreserve to protect Pelican Island, in Florida, as a breeding ground for an imperiled population of brown pelicans (Pelecanus occidentalis) (Fischman 2003). Today, the Atlantic coast population of the brown pelican is no longer in need of protection under the Endangered Species Act (ESA) , but Pelican Island National Wildlife Refuge provides protection for nine threatened and endangered species.
Management of the refuge system has changed significantly since the presidency of Teddy Roosevelt, …
Hybrids And Policy, Susan M. Haig, Fred W. Allendorf
Hybrids And Policy, Susan M. Haig, Fred W. Allendorf
United States Geological Survey: Staff Publications
Hybridization (the interbreeding of individuals from genetically distinct populations, regardless of their taxonomic status) is the double-edged sword of conservation biology. On one hand, increased rates of hybridization because of human activities have led to the extinction of populations and species in plant and animal taxa throughout the world (Rhymer and Simberloff 1996; Allendorf et al. 2001). On the other, hybridization is an important and natural part of the evolutionary process. Thus, hybridization between isolated populations can be an important tool for recovery (Mansfield and Land 2002). However, it has been difficult to develop conservation policies that treat the problems …
Introduction To "The Endangered Species Act At Thirty, Volume 1", J. Michael Scott, Dale D. Goble, Frank W. Davis
Introduction To "The Endangered Species Act At Thirty, Volume 1", J. Michael Scott, Dale D. Goble, Frank W. Davis
United States Geological Survey: Staff Publications
This book examines one legislative effoft to resolve the dilemma, the Endangered Speeies Aet of 1973 (ESA 1973). The ESA was an idealistic and perhaps naive attempt to preserve humanity by preserving other species in the ecological support system that makes life possible. In the words of the House report accompanying the bill:
A certain humility, and a sense of urgency seem indicated .... One might analogize the case to one in which one copy of all the books ever printed were gathered together in one huge building. The position in which we find ourselves today is that of custodians …
By The Numbers, J. Michael Scott, Dale D. Goble, Leona K. Svancara, Anna Pidgorna
By The Numbers, J. Michael Scott, Dale D. Goble, Leona K. Svancara, Anna Pidgorna
United States Geological Survey: Staff Publications
The current endangered species list has its administrative beginnings in 1964 when the Department of the Interior's Committee on Rare and Endangered Wildlife Species published a preliminary list of 62 species at risk of extinction (Goble, forthcoming). Following the enactment of the Endangered Species Preservation Act of 1966 (ESPA), the secretary of the interior in 1967 published the first official list of 78 "native fish and wildlife threatened with extinction" (ESPA sec. l(c); U.S. Department of the Interior 1967; Wilcove and McMillan, this volume). By the time the Endangered Species Act (ESA) was adopted in 1973, there were 392 species …
Environmental Contaminants In Fish And Their Associated Risk To Piscivorous Wildlife In The Yukon River Basin, Alaska, Jo Ellen Hinck, Christopher J. Schmitt, Kathy R. Echols, Tom W. May, Carl E. Orazio, Donald E. Tillitt
Environmental Contaminants In Fish And Their Associated Risk To Piscivorous Wildlife In The Yukon River Basin, Alaska, Jo Ellen Hinck, Christopher J. Schmitt, Kathy R. Echols, Tom W. May, Carl E. Orazio, Donald E. Tillitt
United States Geological Survey: Staff Publications
Organochlorine chemical residues and elemental contaminants were measured in northern pike (Esox lucius), longnose sucker (Catostomus catostomus), and burbot (Lota lota) from 10 sites in the Yukon River Basin (YRB) during 2002. Contaminant concentrations were compared to historical YRB data and to toxicity thresholds for fish and piscivorous wildlife from the scientific literature. A risk analysis was conducted to screen for potential hazards to piscivorous wildlife for contaminants that exceeded literature-based toxicity thresholds. Concentrations of total DDT (sum of p,p¢-homologs; 1.09–13.6 ng/g), total chlordane (0.67–7.5 ng/g), dieldrin (<0.16–0.6 ng/g), toxaphene (<11–34 ng/g), total PCBs (<20– 87 ng/g), TCDD-EQ (<1.7 pg/g), arsenic (0.03–1.95 lg/g), cadmium (<0.02–0.12 lg/g), copper (0.41–1.49 lg/g), and lead (<0.21–0.27 lg/g) did not exceed toxicity thresholds for growth and reproduction in YRB fish. Concentrations of mercury (0.08–0.65 lg/g), selenium (0.23–0.85 lg/g), and zinc (11–56 lg/g) exceeded toxicity thresholds in one or more samples and were included in the risk analysis for piscivorous wildlife. No effect hazard concentrations (NEHCs) and low effect hazard concentrations (LEHCs), derived from literaturebased toxicity reference values and avian and mammalian life history parameters, were calculated for mercury, selenium, and zinc. Mercury concentrations in YRB fish exceeded the NEHCs for all bird and small mammal models, which indicated that mercury concentrations in fish may represent a risk to piscivorous wildlife throughout the YRB. Low risk to piscivorous wildlife was associated with selenium and zinc concentrations in YRB fish. Selenium and zinc concentrations exceeded the NEHCs and LEHCs for only the small bird model. These results indicate that mercury should continue to be monitored and assessed in Alaskan fish and wildlife.
A Screening-Level Assessment Of Lead, Cadmium, And Zinc In Fish And Crayfish From Northeastern Oklahoma, Usa, Christopher J. Schmitt, William G. Brumbaugh, Gregory L. Linder, Jo Ellen Hinck
A Screening-Level Assessment Of Lead, Cadmium, And Zinc In Fish And Crayfish From Northeastern Oklahoma, Usa, Christopher J. Schmitt, William G. Brumbaugh, Gregory L. Linder, Jo Ellen Hinck
United States Geological Survey: Staff Publications
The objective of this study was to evaluate potential human and ecological risks associated with metals in fish and crayfish from mining in the Tri-States Mining District (TSMD). Crayfish (Orconectes spp.) and fish of six frequently consumed species (common carp, Cyprinus carpio; channel catfish, Ictalurus punctatus; flathead catfish, Pylodictis olivaris; largemouth bass, Micropterus salmoides; spotted bass, M. punctulatus; and white crappie, Pomoxis annularis) were collected in 2001–2002 from the Oklahoma waters of the Spring River (SR) and Neosho River (NR), which drain the TSMD. Samples from a mining-contaminated site in eastern Missouri and …