Effects of commercial harvest on shovelnose sturgeon populations in the Upper Mississippi River
Jeff D. Koch, Michael C. Quist, Clay L. Pierce, Kirk A. Hansen, Michael J. Steuck
2009, North American Journal of Fisheries Management (29) 84-100
Shovelnose sturgeon Scaphirhynchus platorynchus have become an increasingly important commercial species in the upper Mississippi River (UMR) because of the collapse of foreign sturgeon (family Acipenseridae) populations and bans on imported caviar. In response to concerns about the sustainability of the commercial shovelnose sturgeon fishery in the UMR, we undertook...
Quantifying terrestrial ecosystem carbon dynamics in the Jinsha watershed, Upper Yangtze, China from 1975 to 2000
Shuqing Zhao, Shuguang Liu, Runsheng Yin, Zhengpeng Li, Yulin Deng, Kun Tan, Xiangzheng Deng, David Rothstein, Jiaguo Qi
Runsheng Yin, editor(s)
2009, Book chapter, An integrated assessment of China’s ecological restoration programs
Quantifying the spatial and temporal dynamics of carbon stocks in terrestrial ecosystems and carbon fluxes between the terrestrial biosphere and the atmosphere is critical to our understanding of regional patterns of carbon storage and loss. Here we use the General Ensemble Biogeochemical Modeling System to simulate the terrestrial ecosystem carbon...
Predicting the natural flow regime: Models for assessing hydrological alteration in streams
D.M. Carlisle, J. Falcone, D.M. Wolock, M. R. Meador, R.H. Norris
2009, River Research and Applications (26) 118-136
Understanding the extent to which natural streamflow characteristics have been altered is an important consideration for ecological assessments of streams. Assessing hydrologic condition requires that we quantify the attributes of the flow regime that would be expected in the absence of anthropogenic modifications. The objective of this study was to...
Organochlorine pesticides residue in lakes of Khorezm, Uzbekistan
Michael R. Rosen, Bakhriddin Nishonov, Dilorom Fayzieva, L. Saito, J. Lamers
2009, Book, 10th International HCH and pesticide forum book of papers: how many obsolete pesticides have been disposed of 8 years after signature of Stockholm Convention
The Khorezm province in northwest Uzbekistan is a productive agricultural area within the Aral Sea Basin that produces cotton, rice and wheat. Various organochlorine pesticides were widely used for cotton production before Uzbekistan's independence in 1991. In Khorezm, small lakes have formed in natural depressions that receive inputs mostly from...
Distinct freshwater and seawater isoforms of Na+/K+-ATPase in gill chloride cells of Atlantic salmon
Stephen D. McCormick, A.M. Regish, A.K. Christensen
2009, Journal of Experimental Biology (212) 3994-4001
Gill Na(+)/K(+)-ATPase (NKA) in teleost fishes is involved in ion regulation in both freshwater and seawater. We have developed and validated rabbit polyclonal antibodies specific to the NKA alpha1a and alpha1b protein isoforms of Atlantic salmon (Salmo salar Linnaeus), and used western blots and immunohistochemistry to characterize their size, abundance...
Geochemical Evolution of Great Salt Lake, Utah, USA
Blair F. Jones, David L. Naftz, Ronald J. Spencer, Charles G. Oviatt
2009, Aquatic Geochemistry (15) 95-121
"The Great Salt Lake (GSL) of Utah, USA, is the largest saline lake in North America, and its brines are some of the most concentrated anywhere in the world. The lake occupies a closed basin system whose chemistry reflects solute inputs from the weathering of a diverse suite of rocks in its drainage...
2008 Spawning Cisco Investigations in the Canadian Waters of Lake Superior
Daniel Yule, Peter A. Addison, Lori M. Evrard, Ken I. Cullis, Gary A. Cholwek
2009, Report
The Great Lakes Science Center of the United States Geological Survey (USGS) is working cooperatively with the Ontario Ministry of Natural Resources (OMNR) on a threeyear study to develop standard procedures for acoustic and midwater trawl (AC-MT) assessments of spawning cisco Coregonus artedi that the OMNR can carry forward as...
Declining global per capita agricultural production and warming oceans threaten food security
Christopher C. Funk, Molly E. Brown
2009, Food Security (1) 271-289
Despite accelerating globalization, most people still eat food that is grown locally. Developing countries with weak purchasing power tend to import as little food as possible from global markets, suffering consumption deficits during times of high prices or production declines. Local agricultural production, therefore, is critical to both food security...
An unusual northern cardinal nest: cooperative breeding or nesting sharing
David M. Leslie Jr.
2009, Bulletin of the Oklahoma Ornithological Society (42) 5-8
No abstract available....
Life history and status of shortnose sturgeon (Acipenser brevirostrum) in the Potomac River
Micah Kieffer
2009, Journal of Applied Ichthyology (25) 34-38
We collected the first life history information on shortnose sturgeon (Acipenser brevirostrum) in any of the rivers to Chesapeake Bay, the geographic center of the species range. In the Potomac River, two telemetry-tagged adult females used 124 km of river: a saltwater/freshwater reach at river km (rkm) 63-141 was the...
Lysimetric Evaluation of Simplified Surface Energy Balance Approach in the Texas High Plains
Gabriel B. Senay, P.H. Gowda, T.A. Howell, T.H. Marek
2009, Applied Engineering in Agriculture (25) 665-669
Numerous energy balance (EB) algorithms have been developed to make use of remote sensing data to estimate evapotranspiration (ET) regionally. However, most EB models are complex to use and efforts are being made to simplify procedures mainly through the scaling of reference ET. The Simplified Surface Energy Balance (SSEB) is...
Potential Inundation due to Rising Sea Levels in the San Francisco Bay Region
Noah Knowles
2009, Report
An increase in the rate of sea level rise is one of the primary impacts of projected global climate change. To assess potential inundation associated with a continued acceleration of sea level rise, the highest resolution elevation data available were assembled from various sources and mosaicked to cover the land...
Hatch Timing Variations Among Reservoir Gizzard Shad Populations: Implications for Stocked Sander spp. Fingerlings
Richard D. Zweifela, David B. Bunnell, Mary T. Bremiganc, R. Scott Hale
2009, North American Journal of Fisheries Management (29) 488-494
Growth and survival of stocked Sander spp. fingerlings can be influenced by timing of stocking in relation to the peak in density of larval gizzard shad Dorosoma cepedianum. However, coordinating stockings to coincide with peaks in gizzard shad density is difficult due to temporal variation in spawn timing among reservoirs....
Climate change adaptation for the US National Wildlife Refuge System
Brad Griffith, J. Michael Scott, Robert S. Adamcik, Daniel Ashe, Brian Czech, Robert Fischman, Patrick Gonzalez, Joshua J. Lawler, A. David McGuire, Anna Pidgorna
2009, Environmental Management (44) 1043-1052
Since its establishment in 1903, the National Wildlife Refuge System (NWRS) has grown to 635 units and 37 Wetland Management Districts in the United States and its territories. These units provide the seasonal habitats necessary for migratory waterfowl and other species to complete their annual life cycles. Habitat conversion and...
Local versus landscape-scale effects of savanna trees on grasses
Corinna Riginos, James B. Grace, David J. Augustine, Truman P. Young
2009, Journal of Ecology (97) 1337-1345
1. Savanna ecosystems – defined by the coexistence of trees and grasses – cover more than one‐fifth the world’s land surface and harbour most of the world’s rangelands, livestock and large mammal diversity. Savanna trees can have a variety of effects on grasses, with consequences for the wild and domestic...
Importance of light, temperature, zooplankton, and fish in predicting the nighttime vertical distribution of Mysis diluviana
Brent Boscarino, Lars G. Rudstam, S.A. Ellenberger, Robert O’Gorman
2009, Aquatic Biology (5) 263-279
The opossum shrimp Mysis diluviana (formerly M. relicta) performs large amplitude diel vertical migrations in Lake Ontario and its nighttime distribution is influenced by temperature, light and the distribution of its predators and prey. At one location in southeastern Lake Ontario, we measured the vertical distribution of mysids, mysid predators (i.e. planktivorous fishes)...
Efficacy of automatic vocalization recognition software for anuran monitoring
J. Hardin Waddle, Tyler F. Thigpen, Brad M. Glorioso
2009, Herpetological Conservation and Biology (4) 384-388
Surveys of vocalizations are a widely used method for monitoring anurans, but it can be difficult to coordinate standardized data collection across a large geographic area. Digital automated recording systems (ARS) offer a low-cost method for obtaining samples of anuran vocalizations, but the number of recordings can...
Reducing landslide hazards through federal, state, and local government cooperation: the Seattle, Washington, experience
P. L. Gori, Inc. Jane Preuss - Planwest Partners
Kyoji Sassa, Paolo Canuti, editor(s)
2009, Book chapter, Landslides - disaster risk reduction
Coregistration of Mars Orbiter Laser Altimeter (MOLA) topography with high-resolution Mars images
Kelly J. Kolb, Chris H. Okubo
2009, Computers & Geosciences (35) 2304-2313
Spacecraft continue to send back extraordinary amounts of data from Mars leaving scientists with the considerable task of analyzing an ever-increasing wealth of information. There are abundant uses for coregistered topography and images, but coregistering various datasets can be time-consuming and labor-intensive. We have developed a set of C-shell Unix...
Water-level conditions in selected confined aquifers of the New Jersey and Delaware Coastal Plain
Vincent T. DePaul, Robert Rosman, Pierre Lacombe
2009, Conference Paper, New Jersey Coastal Plain Stratigraphy & Coastal Processes Conference Proceedings
No abstract available...
Direct calculation of the probability distribution for earthquake losses to a portfolio
Robert L. Wesson, David M. Perkins, Nico Luco, Erdem Karaca
2009, Earthquake Spectra (25) 687-706
We demonstrate a direct method for the calculation of the annual frequency of exceedance for earthquake losses (or the probability distribution for annual losses) to a portfolio. This method parallels the classic method of probabilistic seismic hazard analysis for the calculation of the annual frequency of exceedance for earthquake ground...
Changes in the global water cycle
D.P. Lettenmaier, V. Aizen, A. Amani, T. Bohn, F. Giorgi, S. Harrison, Thomas G. Huntington, R. Lawford, P. Letitre, H. Lins, J. Magomi, G-K. Park, I. Severskiy, W.J. Shuttleworth, P. Singh, S. Sorooshian, W. Struckmeier, K. Takeuchi, L. Tallaksen, C. Vorosmarty, Tandorig Yan, T. Zhang
2009, Conference Paper, Water in a changing world : the United Nations World Water Development Report 3
No abstract available...
Deglaciation in the southeastern Laurentide Sector and the Hudson Valley – 15,000 Years of vegetational and climate history
Dorothy M. Peteet, John Rayburn, Kirsten M. Menking, Guy Robinson, Byron D. Stone
2009, Conference Paper, Field trip guidebook: New York State Geological Association 81st annual meeting, September 25-27, 2009
In this field trip, we provide a review of the significant controversy concerning the timing of deglaciation in the Hudson and Wallkill Valleys. We outline the differences in methodology and chronology with a circular route throughout the Hudson and Wallkill valleys. We begin the trip at Lake Mohonk near New...
Distribution of major anions and trace elements in the unsaturated zone at Franklin Lake Playa, California, USA
George N. Breit, Harland L. Goldstein, Richard L. Reynolds, James C. Yount
2009, Natural Resources and Environmental Issues (15)
The composition of surficial salts formed near dry and drying saline lakes are partly the product of processes active in the unsaturated zone between the ground surface and the water table. These processes were investigated by determining the abundance of water-extractable solutes in sediment from the ground surface to the...
Road to the kingdom: A bedrock transect across the Pre-Silurian Rowe-Hawley Belt in central Vermont
Jonathan Kim, Marjorie H. Gale, R. Coish, Jo Laird, Gregory J. Walsh
2009, Conference Paper, Guidebook to the northeast kingdom, Vermont and surrounding regions
No abstract available....
