Earth Sciences Commons^™

Saprolegniaceae Identified On Amphibian Eggs Throughout The Pacific Northwest, Usa, By Internal Transcribed Spacer Sequences And Phylogenetic Analysis, Jill E. Petrisko, Christopher A. Pearl, David S. Pilliod, Peter P. Sheridan, Charles F. Williams, Charles R. Peterson, R. Bruce Bury

United States Geological Survey: Staff Publications

We assessed the diversity and phylogeny of Saprolegniaceae on amphibian eggs from the Pacific Northwest, with particular focus on Saprolegnia ferax, a species implicated in high egg mortality. We identified isolates from eggs of six amphibians with the internal transcribed spacer (ITS) and 5.8S gene regions and BLAST of the GenBank database. We identified 68 sequences as Saprolegniaceae and 43 sequences as true fungi from at least nine genera. Our phylogenetic analysis of the Saprolegniaceae included isolates within the genera Saprolegnia, Achlya and Leptolegnia. Our phylogeny grouped S. semihypogyna with Achlya rather than with the Saprolegnia reference …

Sedimentology Of The Whiteclay Gravel Beds (Ogallala Group) In Northwestern Nebraska, Usa: Structurally Controlled Drainage Promoted By Early Miocene Uplift Of The Black Hills Dome, Christopher R. Fielding, Hannan E. Lagarry, Leigh Anne Lagarry, Bruce E. Bailey, James B. Swinehart

Department of Earth and Atmospheric Sciences: Faculty Publications

The newly recognized Whiteclay Gravel Beds (WGB) of the Miocene Ogallala Group crop out as a narrow, discontin­uous ribbon of sands and gravels in Dawes and Sheridan Counties, northwestern Nebraska, USA. The WGB are ex­posed in a series of municipal gravel quarries and natural exposures that define a linear trench in underlying strata at least 20 m deep and up to 300 m wide, with short, southeast-trending reaches separating generally longer east-trend­ing sections. This gravel-filled trench can be recognized from the Nebraska–South Dakota border near Whiteclay, Ne­braska southeastward to east of Gordon, Nebraska, a distance of ~ 30 km. The …

Combined Remote Sensing And Field Investigations Of Hydrocarbon Trap Analogue Structures: Examples From The Zagros Simply Folded Belt, Iran And The Sawtooth Range, Montana [Abstract], Caroline M. Burberry, David Cannon, John W. Cosgrove, Terry Engelder

Department of Earth and Atmospheric Sciences: Faculty Publications

First paragraph of abstract: Structures that outcrop at the surface in fold-thrust belts are frequently good analogues for hydrocarbon traps in compressional environments. Along-strike changes in structure and geometry have important implications for connectivity and fluid flow throughout the petroleum system, e.g. in the Zagros Simply Folded Belt, Iran, and in a surface reservoir analogue in the Sawtooth Range, Montana.

Geosciences Newsletter- 2007, Department Of Geosciences

Geological and Environmental Sciences News

Vol. 2, No. 3

• Dear Friends and Alumni
• Faculty News
• Publications
• Grants
• Michigan Geological Repository for Research and Education
• Department Updates
• Graduate Student News
• Internships
• Awards and Graduations
• Alumni News
• Donations

Combination Of Sar Remote Sensing And Gis For Monitoring Subglacial Volcanic Activity – Recent Results From Vatnajökull Ice Cap (Iceland), K. Scharrer, Rocco Malservisi, Ch. Mayer, O. Spieler, U. Münzer

School of Geosciences Faculty and Staff Publications

This paper presents latest results from the combined use of SAR (Synthetic Aperture Radar) remote sensing and GIS providing detailed insights into recent volcanic activity under Vatnajökull ice cap (Iceland). Glaciers atop active volcanoes pose a constant potential danger to adjacent inhabited regions and infrastructure. Besides the usual volcanic hazards (lava flows, pyroclastic clouds, tephra falls, etc.), the volcano-ice interaction leads to enormous meltwater torrents (icelandic: jökulhlaup), devastating large areas in the surroundings of the affected glacier. The presented monitoring strategy addresses the three crucial questions: When will an eruption occur, where is the eruption site and which area is …

Seismicity In The Vicinity Of Yucca Mountain, Nevada, For The Period October 1, 2002 To September 30, 2003, Ken Smith, David Vin Seggern, John G. Anderson, Richard Quittmeyer, Amy J. Smiecinski

Publications (YM)

Earthquake activity in the Yucca Mountain from October 1, 2002 through September 30, 2003 (FY03) is assessed and compared with previous activity in the region. FY03 is the first reporting year since the 1992 M 5.6 Little Skull Mountain earthquake with no earthquakes greater than M 3.0 within 65 km of Yucca Mountain. In addition, FY03 includes the fewest number of earthquakes greater than M 2.0 in any reporting year since the LSM event. With 3075 earthquakes in the catalog, FY03 represents the second largest number of earthquakes (second to FY02) since FY96 when digital seismic network operations began. The …

Seismicity In The Vicinity Of Yucca Mountain, Nevada, For The Period October 1, 2004 To September 30, 2006, Ken Smith, John G. Anderson, Amy J. Smiecinski

Publications (YM)

This report describes earthquake activity within approximately 65 km of Yucca Mountain site during the October 1, 2004 to September 30, 2006 time period (FY05-06). The FY05-06 earthquake activity will be compared with the historical and more recent period of seismic activity in the Yucca Mountain region. The relationship between the distribution of seismicity and active faults, historical patterns of activity, and rates of earthquakes (number of events and their magnitudes) are important components in the assessment of the seismic hazard for the Yucca Mountain site. Since October 1992 the University of Nevada has compiled a catalog of earthquakes in …

Sedimentology And Stratigraphic Architecture Of The Late Permian Betts Creek Beds, Queensland, Australia, Jonathan P. Allen, Christopher R. Fielding

Department of Earth and Atmospheric Sciences: Faculty Publications

The Late Permian Betts Creek Beds form a succession of coal-bearing alluvial-coastal plain sediments in a basin marginal setting within the northeastern Galilee Basin, Queensland, Australia. The unit is ~ 50–60 m in thick­ness at Porcupine Creek National Park where outcrop is laterally continuous for several kilometers. Eight fa­cies have been identified within the formation and can be grouped into 2 facies associations: (A) channel depos­its and (B) floodbasin deposits. The channel association consists of conglomerate (A1) and trough cross-bedded multistorey sandstone facies (A2), both interpreted as deposits of low-sinuosity river systems, tidally influenced fluvial channels (A3), interbedded sandstone and …

Quaternary Glaciation And Hydrologic Variation In The South American Tropics As Reconstructed From The Lake Titicaca Drilling Project, Sherilyn C. Fritz, Paul A. Baker, Geoffrey O. Seltzer, Ashley Ballantyne, Pedro Tapia, Hai Cheng, R. Lawrence Edwards

Department of Earth and Atmospheric Sciences: Faculty Publications

A 136-m-long drill core of sediments was recovered from tropical high-altitude Lake Titicaca, Bolivia-Peru, enabling a reconstruction of past climate that spans four cycles of regional glacial advance and retreat and that is estimated to extend continuously over the last 370,000 yr. Within the errors of the age model, the periods of regional glacial advance and retreat are concordant respectively with global glacial and interglacial stages. Periods of ice advance in the southern tropical Andes generally were periods of positive water balance, as evidenced by deeper and fresher conditions in Lake Titicaca. Conversely, reduced glaciation occurred during periods of negative …

Demersal Fishes Associated With Lophelia Pertusa Coral And Hard-Substrate Biotopes On The Continental Slope, Northern Gulf Of Mexico, Kenneth J. Sulak, R. Allen Brooks, Kirsten E. Luke, April D. Norem, Michael Randall, Andrew J. Quaid, George E. Yeargin, Jana M. Miller, William M. Harden, John H. Caruso, Steve W. Ross

United States Geological Survey: Staff Publications

The demersal fish fauna of Lophelia pertusa (Linnaeus, 1758) coral reefs and associated hard-bottom biotopes was investigated at two depth horizons in the northern Gulf of Mexico using a manned submersible and remote sampling. The Viosca Knoll fauna consisted of at least 53 demersal fish species, 37 of which were documented by submersible video. On the 325 m horizon, dominant taxa determined from frame-by-frame video analysis included Stromateidae, Serranidae, Trachichthyidae, Congridae, Scorpaenidae, and Gadiformes. On the 500 m horizon, large mobile visual macrocarnivores of families Stromateidae and Serranidae dropped out, while a zeiform microcarnivore assumed importance on reef “Thicket” biotope, …

Fecal Microbe Distribution And Abundance Used As A Possible Proxy For Nutrient Source Identification In Eutrophic Wilgreen Lake, Madison County, Kentucky, Theresa A. Aguiar, Walter S. Borowski

EKU Faculty and Staff Scholarship

Wilgreen Lake is a eutrophic lake that has been listed on the EPA’s 303d list as nutrient impaired. Potential sources of this impairment are from humans, cattle manure and fertilizers. We suspect that the majority of nutrients originate from human sources. As a possible proxy for nutrient input, we test our hypothesis by examining fecal microbe distribution and abundance in the lake.

We took water samples at 19 sampling locations on 4 occasions. Sampling spanned 26 June to 15 August with the last 3 sampling events occurring at roughly two-week intervals. These samples were then processed using IDEXX methods, which …

Exceptionally Preserved Jellyfishes From The Middle Cambrian, Paulyn Cartwright, Susan L. Halgedahl, Jonathan R. Hendricks, Richard D. Jarrard, Antonio C. Marques, Allen G. Collins, Bruce S. Lieberman

Faculty Publications

Cnidarians represent an early diverging animal group and thus insight into their origin and diversification is key to understanding metazoan evolution. Further, cnidarian jellyfish comprise an important component of modern marine planktonic ecosystems. Here we report on exceptionally preserved cnidarian jellyfish fossils from the Middle Cambrian (~505 million years old) Marjum Formation of Utah. These are the first described Cambrian jellyfish fossils to display exquisite preservation of soft part anatomy including detailed features of structures interpreted as trailing tentacles and subumbrellar and exumbrellar surfaces. If the interpretation of these preserved characters is correct, their presence is diagnostic of modern jellyfish …

Forage Spokesman Information, Lowell J. Clifford, Barry Drury, John Mcglone, Mac Stone

Kentucky Grazing Conference

No abstract provided.

Techniques For Reducing Mud Problems And Improving Pasture Abused Areas, Ken Johnson

Kentucky Grazing Conference

I would like to approach this topic from two directions, mud control and then problem areas. Mud control in concentrated areas almost impossible with forages alone. Using a mud control product is usually advised. I will talk about several.

My Experiences With Summer Lovegrass, Tim Phillips

Kentucky Grazing Conference

I first heard about teff (Eragrostis tef) being used as a hay crop in early 2006 at a meeting near the Shenandoah Valley area of Virginia. The meeting was about orchardgrass production, so I was speaking about new varieties that are available for producers to grow. Several farmers had experienced massive stand losses of their established orchardgrass hay fields, so they had tried this ‘new’ summer annual grass. Some of the farmers were surprised that I knew about this grass, but I didn’t know about its use as a hay or pasture grass. Teff is the Ethiopian name for a …

Experiences With "Teff" (Summer Love Grass) In Kentucky, Bob Jaynes

Kentucky Grazing Conference

Following publicity about the Klamath Experiment Station evaluation of Teff as an annual forage in 2003 and 2004, requests for more information and seed sources kept KES staff busy for weeks last spring. We received over 300 contacts from 41 states. Local seed salesman Laverne Hankins processed over 150 orders for more than 5 tons of seed. Those who received seed were sent a questionnaire this fall in hopes that we would get feedback on growers experience with this new forage species. To date we have received responses from about 15 growers.

Options For Summer Grazing, David C. Ditsch

Kentucky Grazing Conference

Summer is the time during the growing season when shortages of forage most often occur in Kentucky. The summer of 2007 will long be remembered as one the warmest and driest in recent years and cause many livestock producers to evaluate their current forage systems. Most Kentucky pastures are predominately cool-season grasses such as tall fescue, orchardgrass and bluegrass. During the historically hot, dry periods in July and August, these species produce very little growth and can quickly become overgrazed. At this point, some producers have no alternative except to buy feed or begin feeding stored forage intended for winter …

Does Grazing Method Matter?, Garry D. Lacefield

Kentucky Grazing Conference

Interest in and opportunities for grazing continues to increase not only in Kentucky, but throughout the U.S. In Wisconsin, 12% or approximately 5000 dairymen are now using grazing. In Michigan, over 40% of the dairymen are using grazing for a significant part of their feed requirements. Over 15% of these dairymen are using intensive grazing. Similar numbers exist for Pennsylvania.

Surviving The 2007 Drought, Roy Burris

Kentucky Grazing Conference

Kentucky beef producers could feel the effects of the ’07 drought for a long time. Decisions made now will impact the ’08 and ’09 calf crops. The current hay/feed shortage has stimulated a lot of “panic buying”. Feedstuffs with very low nutritive values are being purchased at an alarming rate. These “feeds” are being purchased at much higher costs than we normally pay for good quality hay. If properly supplemented, they can be used successfully. However, their use to replace the normal hay supply could have disastrous results.

Recovering From The "Freeze" And "Drought" Of 2007, S. Ray Smith

Kentucky Grazing Conference

As all of you know, 2007 has been a devastating year for forage agriculture in Kentucky. The season started with an abnormally warm 7 weeks during late winter and early spring, which promoted lush vegetative growth. Normally this would have been a “good thing”, but it actually made forage plants more vulnerable to below freezing temperatures. Then the severe freeze occurred, with April 7, 8, and 9 the coldest 3 day period in April in KY history. Pastures were stunted for weeks and first cut hay yields were reduced by 35 to 100%. At this point we were still hopeful …

Foreword And Kfgc Award Winners [2007], Garry D. Lacefield, Christi L. Forsythe

Kentucky Grazing Conference

No abstract provided.

An Update On Groundwater Conditions At The Site Of The York College Cuny Campus In Southeastern Queens County, New York City, Nazrul I. Khandaker, Stanley Schleifer, Zarine Ali, Edward A. Molteni

Publications and Research

The wells operated by the Jamaica Water Supply Company in Queens represent the only large scale utilization of groundwater for public water supply in New York City in recent years. These wells were shut down, for the most part, beginning in 1996. Since that time, water table elevations in the area, which had been drawn down by the withdrawal activity of the Jamaica Water Supply Company, have risen significantly causing some high groundwater problems, including flooding of basements. The New York City Department of Environmental Protection (NYCDEP) has held public hearings on a contemplated resumption of ground water withdrawal in …

Marks, Mary E. (Sc 1523), Manuscripts & Folklife Archives

Manuscript Collection Finding Aids

Finding aid and full-text scan (Click on "Additional Files" below) for Manuscripts Small Collection 1523. Dissertation (126 p.; illus.; maps) by Mary E. Marks titled "The Rock Asphalt Industry of Western Kentucky" written for the Department of Geography at the University of Chicago and submitted in December 1931. Discusses several important asphalt rock mining operations in the south central section of Kentucky.

Incorporating Geostatistical Constraints In Nonlinear Inverse Problems, T. C. Johnson, Partha S. Routh, Tom Clemo, Warren Barrash, William P. Clement

CGISS Publications and Presentations

In this paper we present a method of incorporating semivariogram constraints into nonlinear inversion problems. That is, we describe a method of sampling the space of inverse solutions that honor a specified semivariogram or set of semivariograms and also explain a set of state data. The approach can be considered a method of conditional simulation where model conditioning is based upon state data (as opposed to parameter data). The difference between this approach and other simulation approaches is that the simulation is posed as an optimization problem with the joint objective of matching the semivariograms and honoring the state data. …

Auroral Ion Outflow: Low Altitude Energization, Kristina A. Lynch, J. L. Semeter, M. Zettergren, P. Kintner, R. Arnoldy, E. Klatt, J. Labelle, R. G. Michell

Dartmouth Scholarship

The SIERRA nightside auroral sounding rocket made observations of the origins of ion upflow, at topside F-region altitudes (below 700 km), comparatively large topside plasma densities (above 20 000/cc), and low energies (10 eV). Upflowing ions with bulk velocities up to 2 km/s are seen in conjunction with the poleward edge of a nightside substorm arc. The upflow is limited within the poleward edge to a region (a) of northward convection, (b) where Alfvenic ´ and Pedersen conductivities are well-matched, leading to good ionospheric transmission of Alfvenic power, and (c) of ´ soft electron precipitation (below 100 eV). Models of …

Geogram 2007, David J. Keeling Editor, Wku Department Of Geography And Geology

Earth, Environmental, and Atmospheric Sciences Publications

No abstract provided.

Pcor Partnership Atlas, Wesley D. Peck, Barry W. Botnen, Lisa S. Botnen, Daniel J. Daly, John A. Harju, Melanie D. Jensen, Erin M. O'Leary, Steven A. Smith, James A. Sorensen, Edward N. Steadman, Stephanie L. Wolfe, Darin R. Damiani, John T. Litynski, David W. Fischer

EERC Maps and Infographics

The Plains CO₂ Reduction (PCOR) Partnership Atlas, 2nd edition, introduces global climate change and provides a regional profile of CO₂ sources and potential sinks across the PCOR Partnership region. Carbon sequestration offers a promising set of technologies through which CO₂ can be stored for long periods of time.

Droughtscape, Fall 2007, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Fall 2007 Outlook

Diverse Impacts Reported in Summer of 2007

Decadal Climate Cycles Hold Predictive Potential

Drought Experts Take Roadmap to Congress

NDMC Research Updates

Report On Mini-Workshop “Bringing Margins Science To The Classroom”, Cathy Manduca, Jeffrey G. Ryan, Don Reed

Geology Faculty Publications

MARGINS has been awarded an NSF Course, Curriculum, and Laboratory Improvement (CCLI) grant to bring MARGINS research into widespread use in undergraduate teaching in ways that showcase the integrated, multidisciplinary approach that is characteristic of modern, front-line geoscience research. In collaboration with the Science Education Resource Center (SERC) at Carleton College, the project is developing a web-based collection of teaching materials referred to as “Mini-Lessons” (http://serc.carleton.edu/margins). Mini-Lessons range in scope from something as simple as the use of MARGINS science to illustrate a lecture to multi-day lab projects that capitalize on the MARGINS Data Repository. An exciting aspect of this …

Limnological Assistance For The Lake Mead National Recreation Area In Meeting The Challenge Of The Water 2025 Initiative: Quarterly Progress Report, Period Ending: October 1, 2007, Limnological Assistance For Lake Mead National Recreation Area

Limnological Studies

• Task Agreement has been formally executed

• Position description and announcement have been drafted for limnologist position

• All projects have been initiated