Overview and history of the Beach Vitex Task Force: An interagency partnership in action
Randy G. Westbrooks, Elizabeth N. Brabson
2011, Book chapter, Invasive plant management issues and challenges in the United States: 2011 Overview
Beach vitex (Vitex rotundifolia L. f.), a woody vine from Korea, was introduced into the United States as a dune stabilization plant in the mid-1980s. By the mid- to late-1990s, Beach vitex was observed spreading from landscape plantings along the South Carolina coast, crowding out native dune species. In 2003, in...
Overview and status of the witchweed (striga asiatica) eradication program in the Carolinas
Richard D. Iverson, Randy G. Westbrooks, Robert E. Eplee, Alan V. Tasker
2011, Book chapter, Invasive plant management issues and challenges in the United States: 2011 Overview
Witchweed [(Striga asiatica (L.) O. Kuntze)] is a parasitic weed from Asia and Africa that attaches to the roots of grasses and grass crops such as corn and sorghum. Witchweed was first detected in the western hemisphere in a corn field in Columbus County, North Carolina, in July, 1956. Since that...
Regulatory considerations for global transfer of cryopreserved fish gametes
Jill A. Jenkins
2011, Book chapter, Cryopreservation in Aquatic Species
No abstract available....
Fire and the origins of Mediterranean-type vegetation
Jon E. Keeley, William J. Bond, Ross A. Bradstock, Juli G. Pausas, Philip W. Rundel
2011, Book chapter, Fire in Mediterranean ecosystems: Ecology, evolution and management
The mediterranean-type climate (MTC) is widely agreed to have been in place in all five MTC regions since at least the late Pliocene (see Fig. 9.1), ~2 Ma, with much of the contemporary mediterranean-type vegetation (MTV) present and contributing to a highly fire-prone environment. There is far less agreement on:...
Distributional changes and range predictions of downy brome (Bromus tectorum) in Rocky Mountain National Park
J.E. Bromberg, S. Kumar, C. S. Brown, T.J. Stohlgren
2011, Invasive Plant Science and Management (4) 173-182
Downy brome (Bromus tectorum L.), an invasive winter annual grass, may be increasing in extent and abundance at high elevations in the western United States. This would pose a great threat to high-elevation plant communities and resources. However, data to track this species in high-elevation environments are limited. To address...
Concluding remarks: The way forward for urban ecology
J. Niemela, J.H. Breuste, Thomas Elmqvist, Glenn R. Guntenspergen, P. James, N.E. McIntyre
J. Niemela, J.H. Breuste, T. Elmqvist, Glenn R. Guntenspergen, P. James, N.E. McIntyre, editor(s)
2011, Book chapter, Urban ecology: Patterns, processes, and applications
No abstract available....
Hillslope response to knickpoint migration in the Southern Appalachians: Implications for the evolution of post-orogenic landscapes
S.F.G. Wegmann, K.L. Franke, S. Hughes, R.Q. Lewis, N. Lyons, P. Paris, K. Ross, J.B. Bauer, A.C. Witt
2011, Earth Surface Processes and Landforms (36) 1254-1267
The southern Appalachians represent a landscape characterized by locally high topographic relief, steep slopes, and frequent mass movement in the absence of significant tectonic forcing for at least the last 200 Ma. The fundamental processes responsible for landscape evolution in a post‐orogenic landscape remain enigmatic. The non‐glaciated Cullasaja River basin of...
Age, composition, and areal distribution of the Pliocene Lawlor Tuff, and three younger Pliocene tuffs, California and Nevada
Andrei M. Sarna-Wojcicki, Alan L. Deino, Robert J. Fleck, Robert J. McLaughlin, David Wagner, Elmira Wan, David B. Wahl, John W. Hillhouse, Michael Perkins
2011, Geosphere (7) 599-628
The Lawlor Tuff is a widespread dacitic tephra layer produced by Plinian eruptions and ash flows derived from the Sonoma Volcanics, a volcanic area north of San Francisco Bay in the central Coast Ranges of California, USA. The younger, chemically similar Huichica tuff, the tuff of Napa, and the...
Assessment of field-related influences on polychlorinated biphenyl exposures and sorbent amendment using polychaete bioassays and passive sampler measurements
E.M. Janssen, A.M. Oen, Samuel N. Luoma, R.G. Luthy
2011, Environmental Toxicology and Chemistry (30) 173-180
Field-related influences on polychlorinated biphenyl (PCB) exposure were evaluated by employing caged deposit-feeders, Neanthes arenaceodentata, along with polyoxymethylene (POM) samplers using parallel in situ and ex situ bioassays with homogenized untreated or activated carbon (AC) amended sediment. The AC amendment achieved a remedial efficiency in reducing bioaccumulation by 90% in...
Recovery of coded wire tags at a caspian tern colony in San Francisco Bay: A technique to evaluate impacts of avian predation on juvenile salmonids
A.F. Evans, D.D. Roby, K. Collis, B.M. Cramer, J.A. Sheggeby, L.J. Adrean, D.S. Battaglia, Donald E. Lyons
2011, North American Journal of Fisheries Management (31) 79-87
We recovered coded wire tags (CWTs) from a colony of Caspian terns Hydroprogne caspia on Brooks Island in San Francisco Bay, California, to evaluate predation on juvenile salmonids originating from the Sacramento and San Joaquin rivers. Subsamples of colony substrate representing 11.7% of the nesting habitat used by the terns...
Classification of MEC with the ALLTEM at Camp Stanley, Texas
T. Asch, C. Moulton, D.V. Smith
2011, SEG Technical Program Expanded Abstracts (30) 1363-1367
The ALLTEM is a multi-axis electromagnetic induction system designed for unexploded ordnance UXO applications. It uses a continuous triangle-wave excitation and provides good late-time signal-to-noise ratio SNR especially for ferrous targets. Multi-axis transmitter Tx and receiver Rx systems such as ALLTEM provide a richer data set from which to invert...
Calibration of Nu-Instruments Noblesse multicollector mass spectrometers for argon isotopic measurements using a newly developed reference gas
M.A. Coble, M. Grove, A.T. Calvert
2011, Chemical Geology (290) 75-87
The greatest challenge limiting 40Ar/39Ar multicollection measurements is the availability of appropriate standard gasses to intercalibrate detectors. In particular, use of zoom lens ion-optics to steer and focus ion beams into a fixed detector array (i.e., Nu Instruments Noblesse) makes intercalibration of multiple detectors challenging because different ion-optic tuning conditions are...
Microbial sulfate reduction and the sulfur budget for a complete section of altered oceanic basalts, IODP Hole 1256D (eastern Pacific)
Jeffrey C. Alt, Wayne C. Shanks
2011, Earth and Planetary Science Letters (310) 73-83
Sulfide mineralogy and the contents and isotope compositions of sulfur were analyzed in a complete oceanic volcanic section from IODP Hole 1256D in the eastern Pacific, in order to investigate the role of microbes and their effect on the sulfur budget in altered upper oceanic crust. Basalts in the 800m...
A Web-Based Decision Support System for Assessing Regional Water-Quality Conditions and Management Actions
N.L. Booth, E.J. Everman, I.-L. Kuo, L. Sprague, L. Murphy
2011, Journal of the American Water Resources Association (47) 1136-1150
The U.S. Geological Survey National Water Quality Assessment Program has completed a number of water-quality prediction models for nitrogen and phosphorus for the conterminous United States as well as for regional areas of the nation. In addition to estimating water-quality conditions at unmonitored streams, the calibrated SPAtially Referenced Regressions On...
Introduction to the featured collection on "nonstationarity, hydrologic frequency analysis, and water management"
J.E. Kiang, J.R. Olsen, R.M. Waskom
2011, Journal of the American Water Resources Association (47) 433-435
[No abstract available]...
Paleoceanographic changes on the Farallon Escarpment off central California during the last 16,000 years
M. McGann
2011, Quaternary International (235) 26-39
New benthic and planktic foraminiferal assemblage census data and Benthic Foraminiferal Oxygen Index (BFOI) values, previously published marine climate proxy data (stable isotopes and Ca/Cd), and unpublished results of total carbon, organic carbon, and calcium carbonate analyses of sediments recovered off central California on the Farallon Escarpment (1605m water depth;...
Distribution, population status and trends of Kittlitz's murrelet Brachyramphus brevirostris in Lower Cook Inlet and Kachemak Bay, Alaska
Kathy J. Kuletz, Suzann G. Speckman, John F. Piatt, E.A. Labunski
2011, Marine Ornithology: Journal of Seabird Research and Conservation (39) 85-95
Lower Cook Inlet (LCI) in south-central Alaska is unusual among the breeding areas of Kittlitz's Murrelet Brachyramphus brevirostris because of human impacts on the marine and terrestrial environments and because of the lack of tidewater glaciers. In LCI the Kittlitz's Murrelet co-exists with the more abundant Marbled Murrelet, which complicates...
Norovirus outbreak caused by a new septic system in a dolomite aquifer
M. A. Borchardt, K. R. Bradbury, E.C. Alexander, R.J. Kolberg, S.C. Alexander, John R. Archer, L.A. Braatz, B.M. Forest, J.A. Green, S. K. Spencer
2011, Ground Water (49) 85-97
Septic systems that are built in compliance with regulations are generally not expected to be the cause of groundwater borne disease outbreaks, especially in areas with thick vadose zones. However, this case study demonstrates that a disease outbreak can occur in such a setting and outlines the combination of epidemiological,...
Alaska North Slope regional gas hydrate production modeling forecasts
S.J. Wilson, R.B. Hunter, Timothy S. Collett, S. Hancock, R. Boswell, B.J. Anderson
2011, Marine and Petroleum Geology (28) 460-477
A series of gas hydrate development scenarios were created to assess the range of outcomes predicted for the possible development of the “Eileen” gas hydrate accumulation, North Slope, Alaska. Production forecasts for the “reference case” were built using the 2002 Mallik production tests, mechanistic simulation, and geologic studies conducted...
Variation in local abundance and species richness of stream fishes in relation to dispersal barriers: Implications for management and conservation
K.H. Nislow, M. Hudy, B. H. Letcher, E.P. Smith
2011, Freshwater Biology (56) 2135-2144
1.Barriers to immigration, all else being equal, should in principle depress local abundance and reduce local species richness. These issues are particularly relevant to stream-dwelling species when improperly designed road crossings act as barriers to migration with potential impacts on the viability of upstream populations. However, because abundance and richness...
Change of impervious surface area between 2001 and 2006 in the conterminous United States
George Z. Xian, Collin G. Homer, Jon Dewitz, Joyce Fry, N. Hossain, J. Wickham
2011, Photogrammetric Engineering and Remote Sensing (77) 758-762
No abstract available....
Detrital-zircon geochronology and sedimentary provenance
W.A. Thomas
2011, Lithosphere (3) 304-308
[No abstract available]...
Uni-directional consumer-resource theory characterizing transitions of interaction outcomes
Y. Wang, D.L. DeAngelis, J.N. Holland
2011, Ecological Complexity (8) 249-257
A resource is considered here to be a biotic population that helps to maintain the population growth of its consumers, whereas a consumer utilizes a resource and in turn decreases its growth rate. Bi-directional consumer–resource (C–R) interactions have been the object of recent theory. In these interactions, each species acts,...
Characterizing fragmentation of the collective forests in southern China from multitemporal Landsat imagery: A case study from Kecheng district of Zhejiang province
M. Li, Z. Zhu, James E. Vogelmann, D. Xu, W. Wen, A. Liu
2011, Applied Geography (31) 1026-1035
Tropical and subtropical forests provide important ecosystem goods and services including carbon sequestration and biodiversity conservation. These forests are facing increasing socioeconomic pressures and are rapidly being degraded and fragmented. This analysis focuses on the rate of change and patterns of fragmentation in a collective forest area in Zhejiang province,...
CO2 plume management in saline reservoir sequestration
S.M. Frailey, R.J. Finley
2011, Conference Paper, Energy Procedia
A significant difference between injecting CO2 into saline aquifers for sequestration and injecting fluids into oil reservoirs or natural gas into aquifer storage reservoirs is the availability and use of other production and injection wells surrounding the primary injection well(s). Of major concern for CO2 sequestration using a single well...
