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Articles 2971 - 3000 of 3965
Full-Text Articles in Ecology and Evolutionary Biology
Limnological Assistance For The Lake Mead National Recreation Area In Meeting The Challenge Of The Water 2025 Initiative: Quarterly Report, Period Ending September 30, 2008, Margaret N. Rees
Limnological Studies
Project 1: Technical input has been provided at eight advisory team meetings attended this quarter. Broad, overarching “Issues of Concern” developed for the Boulder Basin Adaptive Management Plan are currently under review by Drs. David Wong and Shawn Gerstenberger. A Selenium Management Plan is also under review.
Project 2: Data collected by the Southern Nevada Water Authority has been synthesized to summarize bacteria counts in high-use areas of Lakes Mead and Mohave. This information will be documented and interpreted for management use in a formal report in the upcoming quarter.
Project 3: A draft document titled “Suggested Standard Methods for …
Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Year-End Progress Report, October 1, 2007 To September 30, 2008, Margaret N. Rees
Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Year-End Progress Report, October 1, 2007 To September 30, 2008, Margaret N. Rees
Vegetation Monitoring
Executive Summary
- The Weed Sentry program surveyed over 335 miles and 2,610 acres of transportation corridors on federal land in Clark County for incipient populations of exotic plants.
- 18 manuscripts attained in-press or published status and one manuscript was submitted for review this year. Among published manuscripts, are one documenting Sahara mustard germination patterns (Western North American Naturalist), one assessing exotic species distributions in Clark County (Environmental Monitoring and Assessment), and another is a synthesis of burro effects on Mojave Desert vegetation (Environmental Management), and one assessing vegetation in grassy remnants of the Las Vegas Valley (Desert Plants)
- Staff delivered …
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending September 30, 2008, Margaret N. Rees
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending September 30, 2008, Margaret N. Rees
Wildlife Monitoring
Project 1. Relict Leopard Frog Monitoring, Management, and Research
- Completion of translocation and augmentation efforts for 2008
- Summer egg mass surveys completed
- Coordination is ongoing to identify potential translocation sites near Moapa
- Habitat improvements coordinated for Bighorn Sheep Spring
- Annual Project Review Presentation provided to Clark County
- All milestones and deliverables associated with the MSHCP project are on schedule
Project 2. Bald Eagle Winter Monitoring and Evaluation
- Initial habitat suitability models and maps developed
- Annual Project Review and Presentation given to Clark County
- All MSHCP milestones and deliverables associated with this project are on schedule
Project 3. Peregrine Falcon Monitoring …
Aquatic Ecosystem Response To Storm Water Abatement Measures In The Ravines Of The Gvsu Allendale Campus: Establishment Of Base-Line Biological Condition, Eric Snyder, Jason Nelson, Jason Drogowski, Michelle Harju
Aquatic Ecosystem Response To Storm Water Abatement Measures In The Ravines Of The Gvsu Allendale Campus: Establishment Of Base-Line Biological Condition, Eric Snyder, Jason Nelson, Jason Drogowski, Michelle Harju
Technical Reports
The ravine tributary streams surrounding Grand Valley State Universities Allendale campus represent unique and understudied ecosystems, worthy of significant restoration efforts and of long-lasting protection. They are variously affected by storm water runoff, representing a spectrum from severely impacted to relatively pristine. Quantitative macroinvertebrate samples taken from six streams in late June 2007, indicated that insect diversity was positively correlated to ammonium (p=0.057), while total abundance was negatively correlated to phosphate and chlorophyll-a concentration (n.s.). In addition, phosphate, nitrate, sulfate and iron concentrations were elevated in streams that experience significant storm-water runoff and these streams also tended to have …
Phylogeographical Structure And Evolutionary History Of Two Buggy Creek Virus Lineages In The Western Great Plains Of North America, Abinash Padhi, Amy T. Moore, Mary Bomberger Brown, Jerome E. Foster, Martin Pfeffer, Kathryn P. Gaines, Valerie A. O'Brien, Stephanie A. Strickler, Allison E. Johnson, Charles R. Brown
Phylogeographical Structure And Evolutionary History Of Two Buggy Creek Virus Lineages In The Western Great Plains Of North America, Abinash Padhi, Amy T. Moore, Mary Bomberger Brown, Jerome E. Foster, Martin Pfeffer, Kathryn P. Gaines, Valerie A. O'Brien, Stephanie A. Strickler, Allison E. Johnson, Charles R. Brown
School of Natural Resources: Faculty Publications
Buggy Creek virus (BCRV) is an unusual arbovirus within the western equine encephalitis complex of alphaviruses. Associated with cimicid swallow bugs (Oeciacus vicarius) as its vector and the cliff swallow (Petrochelidon pyrrhonota) and house sparrow (Passer domesticus) as its amplifying hosts, this virus is found primarily in the western Great Plains of North America at spatially discrete swallow nesting colonies. For 342 isolates collected in Oklahoma, Nebraska, Colorado, and North Dakota, from 1974 to 2007, we sequenced a 2076 bp region of the 26S subgenomic RNA structural glycoprotein coding region, and analyzed phylogenetic relationships, …
A Case Study Of A Successful Lake Rehabilitation Project In South-Central Nebraska, Peter J. Spirk, Brad Newcomb, Keith D. Koupal
A Case Study Of A Successful Lake Rehabilitation Project In South-Central Nebraska, Peter J. Spirk, Brad Newcomb, Keith D. Koupal
The Prairie Naturalist
Cottonmill Lake, a 17.4 ha impoundment located in Buffalo County, Nebraska, was a fishery dominated by common carp (Cyprinus carpio). As a result of the poor sportfish populations, angler participation in May and June of 1993 was low (503 ± 210 angler hours) and angler catch rates for all fish species (0.5 ± 0.4 fish/angler hour) was less than desired. In 1995, before rehabilitation, bluegill (Lepomis macrochirus) trap net catch per unit effort (CPUE) was 1.5 ± 0.9, largemouth bass (Micropterus salmoides) catch per hour of electrofishing was 8.0 ± 0.5, and channel catfish (Ictalurus punctatus) …
The Prairie Naturalist. Volume 40, No. 3/4 September/December 2008, The Great Plains Natural Science Society
The Prairie Naturalist. Volume 40, No. 3/4 September/December 2008, The Great Plains Natural Science Society
The Prairie Naturalist
WINTERKILL AND BIOMASS OF THE PAINTED TURTLE IN A SOUTH DAKOTA WETLAND. S. G. Platt, Z. Fast Horse, W. Cross, S. Mannel, and T. R. Rainwater
NON-BLACKBIRD AVIAN OCCURRENCE AND ABUNDANCE IN NORTH DAKOTA SUNFLOWER FIELDS. O. A. Schaaf, G. M. Linz, C. Ooetkott, M. W. Lutman, and W. J. Bleier
USING LOCAL KNOWLEDGE AND REMOTE SENSING TO MAP KNOWN AND POTENTIAL PRAIRIE-CHICKEN DISTRIBUTION IN KANSAS. M. E. Houts, R. O. Rodgers, R. D. Applegate, and W. H. Busby
A CASE STUDY OF A SUCCESSFUL LAKE REHABILITATION PROJECT IN SOUTH-CENTRAL NEBRASKA. P. J. Spirk, B. A. Newcomb, and K. O. …
Non-Blackbird Avian Occurrence And Abundance In North Dakota Sunflower Fields, Dionn A. Schaaf, George M. Linz, Curt Doetkott, Mark W. Lutman, William J. Bleier
Non-Blackbird Avian Occurrence And Abundance In North Dakota Sunflower Fields, Dionn A. Schaaf, George M. Linz, Curt Doetkott, Mark W. Lutman, William J. Bleier
The Prairie Naturalist
Sunflower fields are well-documented as foraging habitat for fallmigrating blackbirds (Family Icteridae). There is, however, a paucity of information on the use of sunflower fields by non-blackbirds. We assessed non-blackbird use of 12 ripening sunflower fields in the Prairie Pothole Region of central North Dakota. From mid-August to mid-October 2000, we counted 4,129 individual birds, consisting of 22 families and 61 species, in the sample fields and within 5 m of the field edges. We saw the largest number of birds from 18 September to 27 September. The Family Emberizidae (sparrows) accounted for 26% of the species and 20% of …
Using Local Knowledge And Remote Sensing To Map Known And Potential Prairie-Chicken Distribution In Kansas, Michael E. Houts, Randy D. Rodgers, Roger D. Applegate, William H. Busby
Using Local Knowledge And Remote Sensing To Map Known And Potential Prairie-Chicken Distribution In Kansas, Michael E. Houts, Randy D. Rodgers, Roger D. Applegate, William H. Busby
The Prairie Naturalist
The greater prairie-chicken (Tympanuchus cupido) and lesser prairie-chicken (Tympanuchus pallidicinctus) have experienced considerable fluctuations in their range and distribution over time. Having current range maps would help wildlife managers and policy makers with decisions regarding prairie-chicken habitat. To create an updated and accurate map of the Kansas prairie-chicken range, a two-pronged approach was implemented. First, a map of potential habitat was created by using known habitat preferences and avoidance factors. Second, a preliminary map showing the distribution of greater and lesser prairie-chickens was created and mailed to regional experts for comments and edits. The returned edits …
Nest Site Preference And Nesting Success Of Upland Sandpiper On Grazing Systems In East Central North Dakota-, Blane A. Klemek
Nest Site Preference And Nesting Success Of Upland Sandpiper On Grazing Systems In East Central North Dakota-, Blane A. Klemek
The Prairie Naturalist
require ranchers to move their cattle throughout the range from one paddock to another, thereby allowing formerly grazed paddocks to regenerate. This is beneficial in a number of ways: overgrazing is reduced, cattle weight-gains are improved, suitable nesting cover for ground nesting birds is produced, and the overall health of the grassland is enhanced (Sedivec and Barker 1991). The objectives of my study were to investigate nesting success of the upland sandpiper as a function of grazing regime. Specifically, I was interested in comparing nesting success between RGS and non-rotational grazing systems (NRGS) and to examine relationships between nest site …
Semi-Melanistic White-Tailed Deer In Northern Wisconsin, Christopher N. Jacques, Keith R. Mccaffery, Jonathan Jenks, John T. Baccus
Semi-Melanistic White-Tailed Deer In Northern Wisconsin, Christopher N. Jacques, Keith R. Mccaffery, Jonathan Jenks, John T. Baccus
The Prairie Naturalist
Melanistic color morphs of white-tailed deer (Odocoileus virginianus) are differentiated from other recognized color morphs by having uniform black hairs on the dorsal surface with subdued black hairs on the ventral surface, dark face and ears, a distinctive mid-dorsal stripe extending from the head to the apex of the tail, and a tail with black dorsally and white ventrally (Baccus and Posey 1999). Melanism results from the overproduction of the skin pigment melanin and is considered rare in white-tailed deer populations (Severinghaus and Cheatum 1956, Sauer 1984, Smith et al. 1984). Semi-melanistic deer have the same dark pelage …
Winterkill And Biomass Of The Painted Turtle In A South Dakota Wetland, Steven G. Platt, Zannita Fast Horse, Warren Cross, Sylvio Mannel, Thomas R. Rainwater
Winterkill And Biomass Of The Painted Turtle In A South Dakota Wetland, Steven G. Platt, Zannita Fast Horse, Warren Cross, Sylvio Mannel, Thomas R. Rainwater
The Prairie Naturalist
Winterkill occurs when drought conditions expose hibernating turtles to desiccation and lethaly cold temperatures. Winterkill is thought to represent a major source of mortality in northern populations of the painted turtle (Chrysemys picta), but few field observations are available. We herein reported on catastrophic winterkill among western painted turtle (C. pieta bellii) at Limestone Butte Lake (LBL) in western South Dakota during the winter of 2003-2004. Additionally, we used the carcasses of winterkilled turtles (n = 86) to estimate the standing crop biomass of the painted turtle at LBL (0.6 kg/ha). This was the only estimate …
The Prairie Naturalist 2008, Volume 40: Reviewers, Author Index, & Subject Index
The Prairie Naturalist 2008, Volume 40: Reviewers, Author Index, & Subject Index
The Prairie Naturalist
No abstract provided.
Dispersal Limitation And Climate-Related Environmental Gradients Structure Microcrustacean Composition In Freshwater Lakes, Ellesmere Island, Canada, Angela L. Strecker, Rebecca Milne, Shelley E. Arnott
Dispersal Limitation And Climate-Related Environmental Gradients Structure Microcrustacean Composition In Freshwater Lakes, Ellesmere Island, Canada, Angela L. Strecker, Rebecca Milne, Shelley E. Arnott
Environmental Science and Management Faculty Publications and Presentations
Dramatic environmental change is expected in the Arctic, yet little is known about the occurrence and community composition of microcrustaceans in Arctic lakes and how this will be influenced by future environmental change. We sampled and calculated relative abundances of microcrustacean species in 54 lakes on Ellesmere Island, Canada. New species records on Ellesmere Island included Daphnia umbra, Tachidius discipes, and Artemeopsis stefanssoni. Daphnia middendorffiana/tenebrosa was the most common taxon and often dominated microcrustacean assemblages, likely a result of its pigmentation, which offers resistance to ultraviolet radiation. Species richness was positively associated with nutrients, dissolved organic carbon (DOC), temperature, calcium, …
Assessment Of Coliform Bacteria From Point And Nonpoint Sources In The Las Vegas Wash, Susan O'Neill, Kumud Acharya
Assessment Of Coliform Bacteria From Point And Nonpoint Sources In The Las Vegas Wash, Susan O'Neill, Kumud Acharya
Undergraduate Research Opportunities Program (UROP)
This project focuses on an assessment of coliform bacteria from point and non point sources in Las Vegas Wash. Correlations between land use related runoffs, nutrients and organic matter loading and total coliform will be studied. Data will be collected for both daily low and high flow events. Sampling locations will cover all major land use types such as golf course, hotels, hospitals, residential areas, etc., at both the main Wash and its tributaries.
Paddlefish Egg Deposition In The Lower Yellowstone River, Montana And North Dakota, Shannon E. Miller, Dennis L. Scarnecchia, Steven R. Fain
Paddlefish Egg Deposition In The Lower Yellowstone River, Montana And North Dakota, Shannon E. Miller, Dennis L. Scarnecchia, Steven R. Fain
The Prairie Naturalist
We used passive egg collectors during May, June, and July of2003 and 2004 in the lower 50 river kiiometers (rkm) of the Yellowstone River, eastern Montana and western North Dakota, to detect egg deposition by spawning paddle fish (Polyodon spathula). Sampling yielded 292 eggs (46 in 2003 and 246 in 2004). All egg collections in 2003 occurred on the descending limb of the spring hydrograph but 99% of egg collections in 2004 occurred before the spring hydrograph began to descend. Catch-per-unit-effort (CPUE) in 2004 was about four times that of 2003. A combination of river conditions, in addition …
Legislative Committee On Public Lands, Margaret N. Rees
Legislative Committee On Public Lands, Margaret N. Rees
Presentations (PLI)
The Public Lands Institute is dedicated to strengthening the national fabric that is essential for the protection, conservation, multiple use, and management of public lands.
Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, April 1, 2008 To June 30, 2008, Margaret N. Rees
Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, April 1, 2008 To June 30, 2008, Margaret N. Rees
Vegetation Monitoring
Executive Summary
- The Weed Sentry program surveyed over 182 miles of transportation corridors on federal land in Clark County for incipient populations of exotic plants.
- Five manuscripts attained published or in-press status this quarter. The published manuscripts are (1) assessing vegetation in grassy remnants of the Las Vegas Valley (Desert Plants), (2) assessing exotic species distributions in Clark County (Environmental Monitoring and Assessment), (3) a synthesis of burro effects on Mojave Desert vegetation (Environmental Management), and (4) examining canopy-tree influences along a soil parent material gradient in (Journal of the Torrey Botanical Society).
- Staff delivered eight presentations this quarter at …
We're Moving Into Unlv's New Science And Engineering Building, Scott R. Abella
We're Moving Into Unlv's New Science And Engineering Building, Scott R. Abella
Public Policy and Leadership Faculty Research
Our research group is one of the few select groups that is moving into the new, $113-million UNLV Science and Engineering Building. The building is exclusively dedicated to research, and its four stories contain 200,000 square feet of research laboratories, faculty offices, and auditorium space for research symposia. Located on North Campus just northeast of the Biology Building, the building is anticipated to obtain LEED (Leadership in Energy and Environmental Design) certification.
Mojave Applied Ecology Notes Summer 2008, Doug Merkler, Scott R. Abella, Dianne N. Bangle, Donovan J. Craig, Jessica E. Spencer, Alex Suazo
Mojave Applied Ecology Notes Summer 2008, Doug Merkler, Scott R. Abella, Dianne N. Bangle, Donovan J. Craig, Jessica E. Spencer, Alex Suazo
Mojave Applied Ecology Notes
Soil climate project, rare plant monitoring, JFS update, granivory and Sahara mustard
Benthic Biological Monitoring Program Of The Elizabeth River Watershed (2007), Daniel M. Dauer
Benthic Biological Monitoring Program Of The Elizabeth River Watershed (2007), Daniel M. Dauer
Elizabeth River Reports
Executive Summary
Macrobenthic communities of the Elizabeth River watershed have been quantitatively sampled since summer 1999. This report presents the data from the ninth year of sampling in 2007. The three objectives of the Benthic Biological Monitoring Program of the Elizabeth River watershed are: (1) To characterize the health of the tidal waters of the Elizabeth River watershed as indicated by the structure of the benthic communities. (2) To conduct trend analyses on long-term data at 14 fixed-point stations to relate temporal trends in the benthic communities to changes in water and/or sediment quality. Trend analyses will be updated annually …
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending June 30, 2008, Margaret N. Rees
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending June 30, 2008, Margaret N. Rees
Wildlife Monitoring
Project 1. Relict Leopard Frog Monitoring, Management, and Research
- Translocation program completed this quarter at current active translocation sites.
- Egg mass surveys at Blue Point Spring conducted approximately weekly; two additional egg massed collected from site for head-starting.
- Frogs released at Blue Point and Rogers from egg masses collected at Blue Point in March and April, further augmentations planned.
- Spring nocturnal surveys completed.
- Coordination for potential translocation sites on BLM lands ongoing.
- Habitat improvements coordinated and conducted at one new translocation site on BLM lands in the Gold Butte; site received frogs in April.
- All milestones and deliverables associated with …
Limnological Assistance For The Lake Mead National Recreation Area In Meeting The Challenge Of The Water 2025 Initiative: Annual Report, Period Ending May 31, 2008, Margaret N. Rees
Limnological Studies
Hiring: Limnologist Dr. Wai Hing (David) Wong was hired and officially reported to work on 5/15/2008.
Project 1 and Project 2: Dr. Wong has commenced work on Projects 1 and 2.
Project 3: Dr. Wong has commenced work on Project 3. A comprehensive zebra/quagga mussel bibliography has been completed and published to the 100th Meridian Web site. Six interagency, multi-disciplinary quagga mussel meetings have been held. A quagga mussel substrate project has been initiated and, through the coordination efforts of this project, two other studies have been selected and refined to help determine the ecological impacts of quagga mussel infestation …
An Overview Of The Vegetation Research Program: Knowledge Services For Land Management, Scott R. Abella
An Overview Of The Vegetation Research Program: Knowledge Services For Land Management, Scott R. Abella
Fire Science Presentations
- Provide knowledge services about the ecology and management of southwestern dryland ecosystems
- Specialize in working with resource managers to conduct applied research
- Conduct and provide research, monitoring, scientific literature synthesis, and technical assistance
Population Dynamics Of Freshwater Invertebrates In Beltrami County, Amanda Johnson
Population Dynamics Of Freshwater Invertebrates In Beltrami County, Amanda Johnson
Honors Capstones
Capstone submitted as a graduate requirement for the BSU Honors Program.
Limnological Assistance For The Lake Mead National Recreation Area In Meeting The Challenge Of The Water 2025 Initiative: Quarterly Progress Report, Period Ending: April 1, 2008, Margaret N. Rees
Limnological Studies
Hiring: A decision is anticipated in the upcoming weeks regarding the hiring of a limnologist. Two candidates were selected from among three qualified applicants for telephone interviews; they were subsequently interviewed in-person.
Project 1: Review of the draft Boulder Basin Adaptive Management Plan is on-going. Meetings of the Systems Conveyance and Operations Program (SCOP) Technical Advisory Teams were attended.
Project 2: Development of a white paper expressing the joint needs of the entities involved in Water 2025 projects is on-going; scientific review of data and reports related to bacteria in high-use areas of Lake Mead is underway.
Project 3: Discussions …
Plant Community Response To Fire: A Chronosequence Study, Scott R. Abella, E. Cayenne Engel
Plant Community Response To Fire: A Chronosequence Study, Scott R. Abella, E. Cayenne Engel
Public Policy and Leadership Faculty Research
Fires are becoming more prevalent events across the landscape in the southwestern US. Over the next several decades the already arid southwest is predicted to become warmer and drier, with longer summers, and an increase of “extreme” weather events such as lightening inducing thunderstorms. While the “hotter and drier” forecast may indicate less abundant plant life, and thus less available biomass for fuel, exotic invasive plant species are becoming more dominant across the landscape with increases in human travel and commerce. Exotic species (particularly many of the invasive grasses) are adding fuel for the fires to burn when the annuals …
Mojave Applied Ecology Notes Spring 2008, Lesley Defalco, E. Cayenne Engel, Scott R. Abella, Jessica E. Spencer, Jill E. Craig
Mojave Applied Ecology Notes Spring 2008, Lesley Defalco, E. Cayenne Engel, Scott R. Abella, Jessica E. Spencer, Jill E. Craig
Mojave Applied Ecology Notes
Post-fire restoration, fire chronosequence study, Joint Fire Science update, Weed Sentry program and DNWR surveys
Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, January 1— March 31, 2008, Margaret N. Rees
Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, January 1— March 31, 2008, Margaret N. Rees
Vegetation Monitoring
Executive Summary
- The Weed Sentry program surveyed 104 miles of transportation corridors on federal land in Clark County for incipient populations of exotic plants.
- Seven manuscripts attained in-press or published status and two manuscripts were submitted for review this quarter. Among other in-press manuscripts, are one documenting Sahara mustard germination patterns (Western North American Naturalist), one assessing exotic species distributions in Clark County (Environmental Monitoring and Assessment), and another is a synthesis of burro effects on Mojave Desert vegetation (Environmental Management).
- Staff delivered four presentations this quarter at conferences or at agency meetings. Twenty-six Las Vegas bearpoppy sites were assessed …
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending March 31, 2008, Margaret N. Rees
Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending March 31, 2008, Margaret N. Rees
Wildlife Monitoring
Project 1. Relict Leopard Frog Monitoring, Management, and Research
- Translocation program initiated this quarter, egg mass collections completed, tadpole rearing underway.
- Egg mass surveys at Blue Point Spring conducted approximately weekly; one egg mass collected from site for headstarting.
- Spring nocturnal surveys in progress.
- Coordination for potential translocation sites on BLM lands ongoing.
- Habitat improvements coordinated and conducted at one new translocation site on BLM lands in the Gold Butte; site scheduled to receive frogs in April.
- All milestones and deliverables associated with the MSHCP project on schedule.
Project 2. Bald Eagle Winter Monitoring and Evaluation
- Winter bald eagle count …