Forest structure of oak plantations after silvicultural treatment to enhance habitat for wildlife
Daniel J. Twedt, Cherrie-Lee P. Phillip, Michael P. Guilfoyle, R. Randy Wilson
Callie Jo Schweitzer, Wayne K. Clatterbuck, Christopher M. Oswalt, editor(s)
2016, Conference Paper, Proceedings of the 18th Biennial Southern Silvicultural Research Conference
During the past 30 years, thousands of hectares of oak-dominated bottomland hardwood plantations have been planted on agricultural fields in the Mississippi Alluvial Valley. Many of these plantations now have closed canopies and sparse understories. Silvicultural treatments could create a more heterogeneous forest structure, with canopy gaps and...
Estuaries: Life on the edge: Chapter 19
James E. Cloern, Patrick L. Barnard, Erin Beller, John C. Callaway, Letitia Grenier, Edwin D. Grosholz, Robin Grossinger, Kathryn Hieb, James T. Holligaugh, Noah Knowles, Martha Sutula, Samuel Veloz, Kerstin Wasson, Alison Whipple
2016, Book chapter, Ecosystems of California
No abstract available....
A review of single-sample-based models and other approaches for radiocarbon dating of dissolved inorganic carbon in groundwater
L. F Han, Niel Plummer
2016, Earth-Science Reviews (152) 119-142
Numerous methods have been proposed to estimate the pre-nuclear-detonation 14C content of dissolved inorganic carbon (DIC) recharged to groundwater that has been corrected/adjusted for geochemical processes in the absence of radioactive decay (14C0) - a quantity that is essential for estimation of radiocarbon age of DIC in groundwater. The models/approaches most...
Hydrologic response of desert wetlands to Holocene climate change: preliminary results from the Soda Springs area, Mojave National Preserve, California
Jeffrey S. Pigati, Marith C. Reheis, John P. McGeehin, Jeffrey S. Honke, J. Bright
2016, Conference Paper, Proceedings of the 1st Death Valley Natural History Conference
Desert wetlands are common features in arid environments and include a variety of hydrologic facies, including seeps, springs, marshes, wet meadows, ponds, and spring pools. Wet ground conditions and dense stands of vegetation in these settings combine to trap eolian, alluvial, and fluvial sediments that accumulate over time....
Cattle grazing in wetlands
Beth A. Middleton
C. Max Finlayson, Mark Everard, Kenneth Irvine, Robert J. McInnes, Beth A. Middleton, Anne A. Van Dam, Nick C. Davidson, editor(s)
2016, Book chapter, The Wetland Book
Cattle grazing drives successional change in wetland vegetation by removing tall grasses and other vegetation. As a disturbance, cattle grazing in some ways resembles natural disturbances such as native mammal grazing and lightning-strike fire, which can support higher biodiversity in wetlands. To encourage rare and Red-Listed species, natural land managers...
Rare earth element deposits in China
Yu-Ling Xie, Zeng-qian Hou, Richard J. Goldfarb, Xiang Guo, Lei Wang
2016, Book chapter, Reviews in Economic Geology
China is the world’s leading rare earth element (REE) producer and hosts a variety of deposit types. Carbonatite- related REE deposits, the most significant deposit type, include two giant deposits presently being mined in China, Bayan Obo and Maoniuping, the first and third largest deposits of this type in the...
Hydrologic effects on diameter growth phenology for Celtis laevigata and Quercus lyrata in the floodplain of the lower White River, Arkansas
Scott T. Allen, Wesley Cochran, Ken W. Krauss, Richard F. Keim, Sammy L. King
Callie Jo Schweitzer, Wayne K. Clatterbuck, Christopher M. Oswalt, editor(s)
2016, Conference Paper, Proceedings of the 18th Biennial Southern Silvicultural Research Conference: USDA Forest Service General Technical Report SRS-212
Bottomland hardwood (BLH) forests represent an extensive wetland system in the Mississippi Alluvial Valley and southeastern USA, and it is currently undergoing widespread transition in species composition. One such transition involves increased establishment of sugarberry (Celtis laevigata), and decreased establishment of overcup oak (Quercus lyrata). The ecological mechanisms that control...
Consequences of seasonal variation in reservoir water level for predatory fishes: linking visual foraging and prey densities
Stephen L. Klobucar, Phaedra E. Budy
2016, Canadian Journal of Fisheries and Aquatic Sciences (73) 53-64
In reservoirs, seasonal drawdown can alter the physical environment and may influence predatory fish performance. We investigated the performance of lake trout (Salvelinus namaycush) in a western reservoir by coupling field measurements with visual foraging and bioenergetic models at four distinct states (early summer, mid-summer, late summer, and fall). The...
Viral lysis of photosynthesizing microbes as a mechanism for calcium carbonate nucleation in seawater
John T. Lisle, Lisa L. Robbins
2016, Frontiers in Microbiology (7)
Removal of carbon through the precipitation and burial of calcium carbonate in marine sediments constitutes over 70% of the total carbon on Earth and is partitioned between coastal and pelagic zones. The precipitation of authigenic calcium carbonate in seawater, however, has been hotly debated because despite being in a supersaturated...
Integrated modeling approach for fate and transport of submerged oil and oil-particle aggregates in a freshwater riverine environment
Faith A. Fitzpatrick, Rex Johnson, Zhenduo Zhu, David Waterman, Richard D. McCulloch, Earl Hayter, Marcelo H. Garcia, Michel C. Boufadel, Timothy Dekker, Jacob S. Hassan, David T. Soong, Christopher J. Hoard, Kenneth Lee
2016, Conference Paper, Proceedings of the joint federal interagency conference 2015
The Enbridge Line 6B pipeline release of diluted bitumen into the Kalamazoo River downstream of Marshall, Michigan, U.S.A., in July 2010 was one of the largest oil spills into freshwater in North American history. A portion of the oil interacted with river sediment and submerged requiring the development and implementation...
Geometallurgy of ironsand from the Waikato North Head deposit, New Zealand
Jeffrey L. Mauk, Helen A Cocker, Harold Rogers, Jamie Ogiliev, Alex B Padya
2016, Book chapter, AusIMM Monograph 31: Mineral Deposits of New Zealand—Exploration and Research
The Waikato North Head deposit produces a magnetic mineral concentrate from Quaternary sands that formed in a coastal setting in the North Island of New Zealand. Detailed examination of the magnetic mineral fraction of the different stratigraphic horizons mined at Waikato North Head shows that the youngest units yield concentrates...
Testing an attachment method for solar-powered tracking devices on a long-distance migrating shorebird
Ying-Chi Chan, Martin Brugge, T. Lee Tibbitts, Anne Dekinga, Ron Porter, Raymond H. G. Klaassen, Theunis Piersma
2016, Journal of Ornithology (157) 277-287
Small solar-powered satellite transmitters and GPS data loggers enable continuous, multi-year, and global tracking of birds. What is lacking, however, are reliable methods to attach these tracking devices to small migratory birds so that (1) flight performance is not impacted and (2) tags are retained during periods of substantial mass...
Hematology results from experimental exposure of sandhill cranes to West Nile virus
Glenn H. Olsen
2016, Conference Paper, Proceedings of the North American Crane Workshop
West Nile virus is a deadly virus for young cranes. In testing two different vaccines on both adult sandhill cranes (Grus canadensis), we discovered that some blood parameters are altered by exposure to the virus. White blood cell counts were the most obvious, and may be used as an indicator...
Fire as an ecosystem process: Chapter 3
Jon E. Keeley, Hugh D. Safford
Harold A. Mooney, Erika S. Zavaleta, editor(s)
2016, Book chapter, Ecosystems of California
This long-anticipated reference and sourcebook for California’s remarkable ecological abundance provides an integrated assessment of each major ecosystem type—its distribution, structure, function, and management. A comprehensive synthesis of our knowledge about this biologically diverse state, Ecosystems of California covers the state from oceans to mountaintops using multiple lenses: past and...
In-air hearing of a diving duck: A comparison of psychoacoustic and auditory brainstem response thresholds
Sara E. Crowell, Alicia M. Wells-Berlin, Ronald E. Therrien, Sally E. Yannuzzi, Catherine E. Carr
2016, Journal of the Acoustical Society of America (139) 3001-3008
Auditory sensitivity was measured in a species of diving duck that is not often kept in captivity, the lesser scaup. Behavioral (psychoacoustics) and electrophysiological [the auditory brainstem response (ABR)] methods were used to measure in-air auditory sensitivity, and the resulting audiograms were compared. Both approaches yielded audiograms with similar U-shapes...
Photoperiod and nesting phenology of whooping cranes at two captive sites
Glenn H. Olsen
2016, Conference Paper, Proceedings of the North American Crane Workshop
Increasing daylight is known to be a breeding stimulus in many avian species breeding in northern latitudes. This is thought to be true for cranes that breed in such latitudes including the Whooping Crane (Grus americana). For this reason, the captive breeding centers use artificial light to lengthen daylight hours,...
Stratigraphic architecture of a fluvial-lacustrine basin-fill succession at Desolation Canyon, Uinta Basin, Utah: Reference to Walthers’ Law and implications for the petroleum industry
Grace L. Ford, David R. Pyles, Marieke Dechesne
2016, Mountain Geologist (53) 5-28
A continuous window into the fluvial-lacustrine basin-fill succession of the Uinta Basin is exposed along a 48-mile (77-kilometer) transect up the modern Green River from Three Fords to Sand Wash in Desolation Canyon, Utah. In ascending order the stratigraphic units are: 1) Flagstaff Limestone, 2) lower Wasatch member of...
Montane Forests
Malcolm P. North, Brandon M. Collins, Hugh D. Safford, Nathan L. Stephenson
2016, Book chapter, Ecosystems of California
This long-anticipated reference and sourcebook for California’s remarkable ecological abundance provides an integrated assessment of each major ecosystem type—its distribution, structure, function, and management. A comprehensive synthesis of our knowledge about this biologically diverse state, Ecosystems of California covers the state from oceans to mountaintops using multiple lenses: past and...
A tube seepage meter for in situ measurement of seepage rate and groundwater sampling
John E. Solder, Troy E. Gilmore, David P. Genereux, D. Kip Solomon
2016, Groundwater (54) 588-595
We designed and evaluated a “tube seepage meter” for point measurements of vertical seepage rates (q), collecting groundwater samples, and estimating vertical hydraulic conductivity (K) in streambeds. Laboratory testing in artificial streambeds show that seepage rates from the tube seepage meter agreed well with expected values. Results of field testing...
Comparative mitogenomic analyses of three North American stygobiont amphipods of the genus Stygobromus (Crustacea: Amphipoda)
Aaron W. Aunins, David L. Nelms, Christopher S. Hobson, Tim L. King
2016, Mitochondrial DNA Part B (1) 560-563
The mitochondrial genomes of three North American stygobiont amphipods Stygobromus tenuis potomacus, S. foliatus and S. indentatus collected from Caroline County, VA, were sequenced using a shotgun sequencing approach on an Illumina NextSeq500 (Illumina Inc., San Diego, CA). All three mitogenomes displayed 13 protein-coding genes, 22 tRNAs and two rRNAs typical of metazoans. While S. tenuis and S....
An evaluation of methods for estimating decadal stream loads
Casey J. Lee, Robert M. Hirsch, Gregory E. Schwarz, David J. Holtschlag, Stephen D. Preston, Charles G. Crawford, Aldo V. Vecchia
2016, Journal of Hydrology (542) 185-203
Effective management of water resources requires accurate information on the mass, or load of water-quality constituents transported from upstream watersheds to downstream receiving waters. Despite this need, no single method has been shown to consistently provide accurate load estimates among different water-quality constituents, sampling sites, and sampling regimes. We evaluate...
Diet overlap and predation between largemouth bass and walleye in Wisconsin lakes using DNA barcoding to improve taxonomic resolution
Craig J. Kelling, Daniel A. Isermann, Brian L. Sloss, Keith N. Turnquist
2016, North American Journal of Fisheries Management (36) 621-629
Over the last decade, the abundance of Largemouth Bass Micropterus salmoides has increased in many northern Wisconsin lakes, causing concern among anglers and biologists regarding the potential for Largemouth Bass to negatively affect populations of Walleye Sander vitreus through predation or competition for prey. Our objectives were to determine whether...
Feeding ecology of non-native Siberian prawns, Palaemon modestus (Heller, 1862) (Decapoda, Palaemonidae), in the lower Snake River, Washington, U.S.A.
Kenneth F. Tiffan, William Hurst
2016, Crustaceana (89) 721-736
We used both stomach content and stable isotope analyses to describe the feeding ecology of Siberian prawns Palaemon modestus (Heller, 1862), a non-native caridean shrimp that is a relatively recent invader of the lower Snake River. Based on identifiable prey in stomachs, the opossum shrimp Neomysis mercedis Holmes, 1896 comprised...
Measuring the impact of invasive species on popular culture: a case study based on toy turtles from Japan
Jeffrey E. Lovich, Katsuya Yamamoto
2016, Humans and Nature (27) 1-11
The red-eared slider turtle (Trachemys scripta elegans) is native to portions of the United States of America (USA) and adjacent northeastern Mexico. The bright and colorful hatchlings have long been popular as pets globally but numerous individuals have been released into the wild establishing populations in areas well outside their...
Modelling with stakeholders - Next generation
Alexey Voinov, Nagesh Kolagani, Michael K McCall, Pierre D. Glynn, Marit E Kragt, Frank O Ostermann, Suzanne A Pierce, Palaniappan Ramu
2016, Environmental Modelling and Software (77) 196-220
This paper updates and builds on ‘Modelling with Stakeholders’ Voinov and Bousquet, 2010 which demonstrated the importance of, and demand for, stakeholder participation in resource and environmental modelling. This position paper returns to the concepts of that publication and reviews the progress made since 2010. A new development is the...
