Accumulation of PCB congeners in nestling tree swallows (Tachycineta bicolor) on the Hudson River, New York
Kathy R. Echols, Donald E. Tillitt, John W. Nichols, Anne L. Secord, John P. McCarty
2004, Environmental Science & Technology (38) 6240-6246
Tree swallows (Tachycineta bicolor) were used as a sentinel species to monitor the contamination and bioavailability of polychlorinated biphenyls (PCBs) in the Hudson River watershed. Several tree swallow nest box colonies around and downstream from Hudson Falls, NY, were studied. Tree swallow eggs, adults, and 5-, 10-, and 15-day-old nestlings...
Age of the Rockland tephra, western USA
M. A. Lanphere, D.E. Champion, M.A. Clynne, J. B. Lowenstern, A.M. Sarna-Wojcicki, J. L. Wooden
2004, Quaternary Research (62) 94-104
The age of the Rockland tephra, which includes an ash-flow tuff south and west of Lassen Peak in northern <a title="Learn...
Garnet lherzolites from Louwrensia, Namibia: Bulk composition and P/T relations
F.R. Boyd, D.G. Pearson, Karin O. Hoal, B.G. Hoal, P.H. Nixon, M.J. Kingston, S.A. Mertzman
2004, LITHOS (77) 573-592
Bulk, mineral and trace element analyses of garnet lherzolite xenoliths from the Louwrensia kimberlite pipe, south-central Namibia, together with previously published Re-Os isotopic data [Chem. Geol. (2004)], form the most extensive set of chemical data for off-craton suites from southern Africa. The Louwrensia suite is similar to those from the...
Analytical error in the identification of fibrous and asbestiform amphiboles: Implications for the analytical and regulatory communities
G.P. Meeker, H.A. Lowers
2004, Conference Paper, Microscopy and Microanalysis
[No abstract available]...
Grassland vegetation and bird communities in the southern Great Plains of North America
R.N. Chapman, David M. Engle, R.E. Masters, David M. Leslie Jr.
2004, Agriculture, Ecosystems and Environment (104) 577-585
Structure and composition of vegetation and abundance of breeding birds in grasslands seeded to Old World bluestem (Bothriochloa ischmaeum) were compared to native mixed prairie in the southern Great Plains of North America. Abundance of birds was determined using fixed-radius point counts. Detrended correspondence analysis was used to compare plant...
Nesting biology of three grassland passerines in the northern tallgrass prairie
Maiken Winter, Douglas H. Johnson, Jill A. Shaffer, W. Daniel Svedarsky
2004, The Wilson Bulletin (116) 211-223
Basic nesting information on grassland passerines is needed for improving grassland bird management. Among the information needs are (1) the suitability of nesting habitat, (2) periods during the breeding season in which birds are most vulnerable to disturbances, and (3) how to fit grasslands into a prioritization scheme for conservation....
Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest: Reply
Wendy J. Palen, Daniel E. Schindler, M. J. Adams, Christopher A. Pearl, R. Bruce Bury, S. A. Diamond
2004, Ecology (85) 1754-1759
Few ecologists would dispute that exposure to high levels of ultraviolet-B radiation (UV-B) is detrimental to organisms. It is well established that UV-B has been a critical factor shaping the physiology (Blum et al. 1949, Hansson 2000), behavior (Pennington and Emlet 1986, van de Mortel and Buttemer 1998), and distribution (Williamson et...
Are big basins just the sum of small catchments?
J. Shaman, M. Stieglitz, D. Burns
2004, Hydrological Processes (18) 3195-3206
Many challenges remain in extending our understanding of how hydrologic processes within small catchments scale to larger river basins. In this study we examine how low-flow runoff varies as a function of basin scale at 11 catchments, many of which are nested, in the 176 km2 Neversink River watershed in...
Winter distribution and abundance of Snowy Plovers in eastern North America and the West Indies
Elise Elliott-Smith, Susan M. Haig, C. L. Ferland, Leah Gorman
2004, Wader Study Group Bulletin (104) 28-33
Serum protein changes were studied in immune and nonimmune pigeons infected with three different strains of Trichomonas gallinae. Strain I (nonvirulent) produced no change in the relative concentration of serum components. Strains II (oral canker) and III (Jones' Barn) produced decreases in albumin and alpha globulins, and increases...
Postfire management in forested public lands of the western USA
R. L. Beschta, J.J. Rhodes, J.B. Kauffman, Robert E. Gresswell, G.W. Minshall, C.A. Frissell, D.A. Perry, R. Hauer
2004, Conservation Biology (18) 957-967
Forest ecosystems in the western United States evolved over many millennia in response to disturbances such as wildfires. Land use and management practices have altered these ecosystems, however, including fire regimes in some areas. Forest ecosystems are especially vulnerable to postfire management practices because such practices may influence forest dynamics...
Seasonal movement and home range of the Mariana Common Moorhen
Leilani L. Takano, Susan M. Haig
2004, The Condor (106) 652-663
Adult Mariana Common Moorhens (Gallinula chloropus guami) were radio-marked on Guam (n = 25) and Saipan (n = 18) to determine home range, inter- and intraseasonal space use, and movement patterns among the Mariana Islands of Guam, Saipan, Tinian, and Rota. Birds were tracked throughout the dry and wet seasons...
Community- and landscape-level responses of reptiles and small mammals to feral-horse grazing in the Great Basin
Erik A. Beever, P. F. Brussard
2004, Journal of Arid Environments (59) 271-297
We investigated species- and community-level responses of squamate reptiles and granivorous small mammals to feral-horse grazing in two elevational strata across nine mountain ranges of the western Great Basin, USA. Although mammal species richness did not differ between horse-occupied and horse-removed sites, occupied sites possessed less community completeness (biotic integrity)...
Thermal characteristics of wild and captive Micronesian Kingfisher nesting habitats
Dylan C. Kesler, Susan M. Haig
2004, Zoo Biology (23) 301-308
To provide information for managing the captive population of endangered Guam Micronesian kingfishers (Halcyon cinnamomina cinnamomina), four biologically relevant thermal metrics were compared among captive facilities on the United States mainland and habitats used by wild Micronesian kingfishers on the island of Pohnpei (H. c. reichenbachii), Federated States of Micronesia....
Status and reproduction of Gulf coast strain walleye in a Tombigbee River tributary
H.L. Schramm Jr., J. Hart, L. A. Hanson
2004, Southeastern Naturalist (3) 745-757
Walleye (Sander vitreus [Mitchill]) are native to rivers and streams in the Mobile River basin in Mississippi and Alabama. These populations comprise a genetically unique strain (Gulf coast walleye, GCW) and represent the southernmost distribution of walleye in the United States. Luxapallila Creek was considered an important spawning site for...
From the Field: Efficacy of visual barriers in reducing black-tailed prairie dog colony expansion
J.W. Merriman, P.J. Zwank, C. W. Boal, T.L. Bashore
2004, Conference Paper, Wildlife Society Bulletin
[No abstract available]...
Subspecific relationships and genetic structure in the spotted owl
Susan M. Haig, E.D. Forsman, Thomas D. Mullins
2004, Conservation Genetics (5) 683-705
Hierarchical genetic structure was examined in the three geographically-defined subspecies of spotted owl (Strix occidentalis) to define relationships among subspecies and quantify variation within and among regional and local populations. Sequences (522 bp) from domains I and II of the mitochondrial control region were analyzed for 213 individuals from 30 local breeding...
Ship Shoal as a prospective borrow site for barrier island restoration, coastal south-central Louisiana, Usa: Numerical wave modeling and field measurements of hydrodynamics and sediment transport
G.W. Stone, D.A. Pepper, Jingping Xu, X. Zhang
2004, Journal of Coastal Research (20) 70-88
Ship Shoal, a transgressive sand body located at the 10 m isobath off south-central Louisiana, is deemed a potential sand source for restoration along the rapidly eroding Isles Dernieres barrier chain and possibly other sites in Louisiana. Through numerical wave modeling we evaluate the potential response of mining...
Evaluation of land performance in Senegal using multi-temporal NDVI and rainfall series
Ji Li, J. Lewis, James Rowland, G. Tappan, L.L. Tieszen
2004, Journal of Arid Environments (59) 463-480
Time series of rainfall data and normalized difference vegetation index (NDVI) were used to evaluate land cover performance in Senegal, Africa, for the period 1982–1997, including analysis of woodland/forest, agriculture, savanna, and steppe land cover types. A strong relationship exists between annual rainfall and season-integrated NDVI for all of Senegal...
The influence of hook type, angler experience, and fish size on injury rates and the duration of capture in an Alaskan catch-and-release rainbow trout fishery
Julie M. Meka
2004, North American Journal of Fisheries Management (24) 1309-1321
Owing to concerns about the high incidence of past hooking injuries in Alagnak River rainbow trout Oncorhynchus mykiss, fish were captured with spin- and fly-fishing gear with barbed and barbless circle and "J" hooks to determine gear types contributing to injury. Landing and hook removal times were measured for a...
Evidence for competitive dominance of Pink salmon (Oncorhynchus gorbuscha) over other Salmonids in the North Pacific Ocean
G.T. Ruggerone, J.L. Nielsen
2004, Reviews in Fish Biology and Fisheries (14) 371-390
Relatively little is known about fish species interactions in offshore areas of the world's oceans because adequate experimental controls are typically unavailable in such vast areas. However, pink salmon (Oncorhynchus gorbuscha) are numerous and have an alternating-year pattern of abundance that provides a natural experimental control to test for interspecific...
Effects of housing density and cage floor space on C57BL/6J mice
A. L. Smith, S.L. Mabus, J.D. Stockwell, C. Muir
2004, Comparative Medicine (54) 656-663
The Guide for the Care and Use of Laboratory Animals (the Guide) is widely accepted as the housing standard by most Institutional Animal Care and Use Committees. The recommendations are based on best professional judgment rather than experimental data. Current efforts are directed toward replacing these guidelines with data-driven, species-appropriate...
Assessing the potential for fish predation to impact zebra mussels (Dreissena polymorpha): Insight from bioenergetics models
M.A. Eggleton, L.E. Miranda, J.P. Kirk
2004, Ecology of Freshwater Fish (13) 85-95
Rates of annual food consumption and biomass were modeled for several fish species across representative rivers and lakes in eastern North America. Results were combined to assess the relative potential of fish predation to impact zebra mussels (Dreissena polymorpha). Predicted annual food consumption by fishes in southern waters was over...
Natural hybrids of the madtoms, Noturus flavus and Noturus insignis, from the Monongahela River drainage, West Virginia
S.A. Welsh, Dan A. Cincotta
2004, Northeastern Naturalist (11) 399-406
Natural hybridization is rare in the family Ictaluridae. Putative hybrids of the madtoms Noturus flavus and N. insignis were collected from Blackwater River, Monongahela River drainage, WV. Noturus flavus is native to the Monongahela River drainage, whereas N. insignis is nonnative. We quantified morphological differences among N. flavus, N. insignis,...
Evaluation of nekton use and habitat characteristics of restored Louisiana marsh
C.S.B. Thom, M.K.G.L. Peyre, J.A. Nyman
2004, Ecological Engineering (23) 63-75
Marsh terracing and coconut fiber mats are two wetland restoration techniques implemented at Sabine National Wildlife Refuge, Louisiana, USA. Using nekton as an indicator of habitat quality, nekton community assemblages were compared between terraced, coconut-matted, unmanaged marsh (restoration goal), and open water (pre-restoration) habitats. Using a throw trap and a...
Maps showing the stratigraphic framework of South Carolina's Long Bay from Little River to Winyah Bay
Wayne E. Baldwin, Robert A. Morton, Jane F. Denny, Shawn V. Dadisman, William C. Schwab, Paul T. Gayes, Neal W. Driscoll
2004, Open-File Report 2004-1013
