Nematomorph parasites drive energy flow through a riparian ecosystem
Takuya Sato, Katsutoshi Watanabe, Minoru Kanaiwa, Yasuaki Niizuma, Yasushi Harada, Kevin D. Lafferty
2011, Ecology (92) 201-207
Parasites are ubiquitous in natural systems and ecosystem‐level effects should be proportional to the amount of biomass or energy flow altered by the parasites. Here we quantified the extent to which a manipulative parasite altered the flow of energy through a forest‐stream ecosystem. In a Japanese headwater stream, camel crickets...
Native fish conservation areas: A vision for large-scale conservation of native fish communities
Jack E. Williams, Richard N. Williams, Russell F. Thurow, Leah Elwell, David P. Philipp, Fred A. Harris, Jeffrey L. Kershner, Patrick J. Martinez, Dirk Miller, Gordon H. Reeves, Christopher A. Frissell, James R. Sedell
2011, Fisheries (36) 267-277
The status of freshwater fishes continues to decline despite substantial conservation efforts to reverse this trend and recover threatened and endangered aquatic species. Lack of success is partially due to working at smaller spatial scales and focusing on habitats and species that are already degraded. Protecting entire watersheds and aquatic...
Nitrogen uptake by the shoots of smooth cordgrass Spartina alterniflora
T. J. Mozdzer, M. Kirwan, K. J. McGlathery, J. C. Zieman
2011, Marine Ecology Progress Series (433) 43-52
The smooth cordgrass Spartina alterniflora is the foundation species in intertidal salt marshes of the North American Atlantic coast. Depending on its elevation within the marsh, S. alterniflora may be submerged for several hours per day. Previous ecosystem-level studies have demonstrated that S. alterniflora marshes are a net sink for...
No population genetic structure in a widespread aquatic songbird from the Neotropics
Carlos Daniel Cadena, Natalia Gutierrez-Pinto, Nicolas Davila, R. Terry Chesser
2011, Molecular Phylogenetics and Evolution (58) 540-545
Neotropical lowland organisms often show marked population genetic structure, suggesting restricted migration among populations. However, most phylogeographic studies have focused on species inhabiting humid forest interior. Little attention has been devoted to the study of species with ecologies conducive to dispersal, such as those of more open and variable environments...
Johne's disease and free-ranging wildlife
Jonathan Sleeman, E.J.B. Manning
2011, Book chapter, Fowler's Zoo and Wild Animal Medicine Current Therapy, Volume 7
No abstract available....
Investigation of pier scour in coarse-bed streams in Montana, 2001 through 2007
Stephen R. Holnbeck
2011, Scientific Investigations Report 2011-5107
A primary goal of ongoing field research of bridge scour is improvement of scour-prediction equations so that pier-scour depth is predicted accurately-an important element of hydraulic analysis and design of highway bridges that cross streams, rivers, and other waterways. Scour depth for piers in streambeds with a mixture of sand,...
Inference about density and temporary emigration in unmarked populations
Richard B. Chandler, J. Andrew Royle, David I. King
2011, Ecology (92) 1429-1435
Few species are distributed uniformly in space, and populations of mobile organisms are rarely closed with respect to movement, yet many models of density rely upon these assumptions. We present a hierarchical model allowing inference about the density of unmarked populations subject to temporary emigration and imperfect detection. The model...
Fire and invasive plants on California landscapes
Jon E. Keeley, Janet Franklin, Carla D'Antonio
et al. Donald McKenzie, editor(s)
2011, Book chapter, The Landscape Ecology of Fire
Geochemical mapping of the Denver, Colorado (USA) urban area: A comparison of studies in 1972 and 2005
D. B. Smith, R. G. Garrett, G. Closs, K.J. Ellefsen, J.E. Kilburn, J.D. Horton, S. M. Smith
C.C. Johnson, A. Demetriades, J. Locutura, R. T. Ottesen, editor(s)
2011, Book chapter, Mapping the Chemical Environment of Urban Areas
Largemouth bass (Micropterus salmoides) and striped mullet (Mugil cephalus) as vectors of contaminants to human consumers in northwest Florida
Natalie K. Karouna-Renier, Richard A. Snyder, Ted Lange, Suzanne Gibson, Jeffrey G. Allison, Matthew E. Wagner, K. Ranga Rao
2011, Marine Environmental Research (72) 96-104
The health benefits of regular consumption of fish and seafood have been espoused for many years. However, fish are also a potential source of environmental contaminants that have well known adverse effects on human health. We investigated the consumption risks for largemouth bass (Micropterus salmoides; n = 104) and striped mullet (Mugil cephalus; n = 170),...
Analyses of potential factors affecting survival of juvenile salmonids volitionally passing through turbines at McNary and John Day Dams, Columbia River
John Beeman, Hal Hansel, Russell Perry, Eric Hockersmith, Ben Sandford
2011, Open-File Report 2011-1227
This report describes analyses of data from radio- or acoustic-tagged juvenile salmonids passing through hydro-dam turbines to determine factors affecting fish survival. The data were collected during a series of studies designed to estimate passage and survival probabilities at McNary (2002-09) and John Day (2002-03) Dams on the Columbia River...
Geomorphic and ecological effects of Hurricanes Katrina and Rita on coastal Louisiana marsh communities
Sarai C. Piazza, Gregory D. Steyer, Kari F. Cretini, Charles E. Sasser, Jenneke M. Visser, Guerry O. Holm, Leigh A. Sharp, D. Elaine Evers, John R. Meriwether
2011, Open-File Report 2011-1094
Hurricanes Katrina and Rita made landfall in 2005, subjecting the coastal marsh communities of Louisiana to various degrees of exposure. We collected data after the storms at 30 sites within fresh (12), brackish/intermediate (12), and saline (6) marshes to document the effects of saltwater storm surge and sedimentation on marsh...
Evolution of redox processes in groundwater
Peter B. McMahon, Francis H. Chapelle, Paul M. Bradley
Paul Tratnyek, Timothy J. Grundl, Stefan B. Haderlein, editor(s)
2011, Book chapter, Aquatic redox chemistry
No abstract available....
Relationships among net primary productivity, nutrients and climate in tropical rain forest: A pan-tropical analysis
Cory C. Cleveland, Alan R. Townsend, Philip Taylor, Silvia Alvarez-Clare, Mercedes Bustamante, George Chuyong, Solomon Z. Dobrowski, Pauline Grierson, Kyle E. Harms, Benjamin Z. Houlton, Alison Marklein, William Parton, Stephen Porder, Sasha C. Reed, Carlos A. Sierra, Whendee L. Silver, Edmund Tanner, William R. Wieder
2011, Ecology Letters (14) 939-947
Tropical rain forests play a dominant role in global biosphere-atmosphere CO2 exchange. Although climate and nutrient availability regulate net primary production (NPP) and decomposition in all terrestrial ecosystems, the nature and extent of such controls in tropical forests remain poorly resolved. We conducted a meta-analysis of carbon-nutrient-climate relationships in 113...
Tertiary volcanism in the eastern San Juan mountains
Peter W. Lipman, William C. McIntosh
2011, Book chapter, The eastern San Juan Mountains: Their ecology, geology, and human history
No abstract available....
Simulation of branched serial first-order decay of atrazine and metabolites in adapted and nonadapted soils
Richard M. Webb, Mark W. Sandstrom, L. Jason Krutz, Dale L. Shaner
2011, Environmental Toxicology and Chemistry (30) 1973-1981
In the present study a branched serial first-order decay (BSFOD) model is presented and used to derive transformation rates describing the decay of a common herbicide, atrazine, and its metabolites observed in unsaturated soils adapted to previous atrazine applications and in soils with no history of atrazine applications. Calibration of...
Lack of genetic polymorphism among peregrine falcons Falco peregrinus of Fiji
Sandra L. Talbot, Angela G. Palmer, George K. Sage, Sarah A. Sonsthagen, Ted Swem, Daniel J. Brimm, Clayton M White
2011, Journal of Avian Biology (42) 415-428
We compared levels of genetic diversity and isolation among peregrine falcons Falco peregrinus from two South Pacific island complexes (Fiji and Vanuatu: F. p. nesiotes), relative to other island and mainland populations. Fragment data from 12 microsatellite loci and sequence information from the control region of the mitochondrial DNA indicated levels of genetic...
Peat formation processes through the millennia in tidal marshes of the Sacramento-San Joaquin Delta, California, USA
Judith Z. Drexler
2011, Estuaries and Coasts (34) 900-911
The purpose of this study was to determine peat formation processes throughout the millennia in four tidal marshes in the Sacramento-San Joaquin Delta. Peat cores collected at each site were analyzed for bulk density, loss on ignition, and percent organic carbon. Core data and spline fit age-depth models were used...
Small-scale sediment transport patterns and bedform morphodynamics: New insights from high resolution multibeam bathymetry
Patrick L. Barnard, Li H. Erikson, Rikk G. Kvitek
2011, Geo-Marine Letters (31) 227-236
New multibeam echosounder and processing technologies yield sub-meter-scale bathymetric resolution, revealing striking details of bedform morphology that are shaped by complex boundary-layer flow dynamics at a range of spatial and temporal scales. An inertially aided post processed kinematic (IAPPK) technique generates a smoothed best estimate trajectory (SBET) solution to tie...
Long-term isolation of a highly mobile seabird on the Galapagos
Frank Hailer, E.A. Schreiber, Joshua M. Miller, Iris I. Levin, Patricia G. Parker, R. Terry Chesser, Robert C. Fleischer
2011, Proceedings of the Royal Society B: Biological Sciences (278) 817-825
The Galapagos Islands are renowned for their high degree of endemism. Marine taxa inhabiting the archipelago might be expected to be an exception, because of their utilization of pelagic habitats—the dispersal barrier for terrestrial taxa—as foraging grounds. Magnificent frigatebirds (Fregata magnificens) have a highly vagile lifestyle and wide geographical distribution...
Methyl mercury dynamics in a tidal wetland quantified using in situ optical measurements
B.A. Bergamaschi, J.A. Fleck, B.D. Downing, E. Boss, B. Pellerin, N. K. Ganju, D. H. Schoellhamer, A.A. Byington, W.A. Heim, M. Stephenson, R. Fujii
2011, Limnology and Oceanography (56) 1355-1371
We assessed monomethylmercury (MeHg) dynamics in a tidal wetland over three seasons using a novel method that employs a combination of in situ optical measurements as concentration proxies. MeHg concentrations measured over a single spring tide were extended to a concentration time series using in situ optical measurements. Tidal fluxes...
The Holocene history of Nares Strait: Transition from glacial bay to Arctic-Atlantic throughflow
Anne E. Jennings, Christina Sheldon, Thomas M. Cronin, Pierre Francus, Joseph Stoner, John Andrews
2011, Oceanography (24) 26-41
Retreat of glacier ice from Nares Strait and other straits in the Canadian Arctic Archipelago after the end of the last Ice Age initiated an important connection between the Arctic and the North Atlantic Oceans, allowing development of modern ocean circulation in Baffin Bay and the Labrador Sea. As low-salinity,...
Abbreviated bibliography on energy development—A focus on the Rocky Mountain Region
Jessica M. Montag, Carolyn J. Willis, Levi W. Glavin
2011, Open-File Report 2011-1206
Energy development of all types continues to grow in the Rocky Mountain Region of the western United States. Federal resource managers increasingly need to balance energy demands, effects on the natural landscape and public perceptions towards these issues. To assist in efficient access to valuable information, this abbreviated bibliography provides...
Landscape unit based digital elevation model development for the freshwater wetlands within the Arthur C. Marshall Loxahatchee National Wildlife Refuge, Southeastern Florida
Zhixiao Xie, Zhongwei Liu, John Jones, Aaron L. Higer, Pamela A. Telis
2011, Applied Geography (31) 401-412
The hydrologic regime is a critical limiting factor in the delicate ecosystem of the greater Everglades freshwater wetlands in south Florida that has been severely altered by management activities in the past several decades. "Getting the water right" is regarded as the key to successful restoration of this unique wetland...
The use of epifluorescent microscopy and quantitative polymerase chain reaction to determine the presence/absence and identification of microorganisms associated with domestic and foreign wallboard samples
Dale W. Griffin
2011, Report
Epifluorescent microscopy and quantitative polymerase chain reaction (qPCR) were utilized to determine the presence, concentration and identification of bacteria, and more specifically sulfate reducing bacteria (SRB) in subsamples of Chinese and North American wallboard, and wallboard-mine rock. Bacteria were visible in most subsamples, which included wallboard-lining paper from each side...
