Physical Sciences and Mathematics Commons^™

Lake Mead National Recreation Area Sensitive Wildlife Species Monitoring And Analysis: Quarterly Progress Report, Period Ending December 31, 2007, Margaret N. Rees

Wildlife Monitoring

Project 1. Relict Leopard Frog Monitoring, Management, and Research

• Fall surveys completed at all natural and translocation sites.
• Coordination for a potential translocation site on BLM lands in the Gold Butte area ongoing – the aim is that this site will be ready for translocations in 2008.
• Coordination ongoing for evaluation of a translocation site on BLM lands in the Black Mountains, AZ – the plan is to complete compliance in 2008.
• Coordination and assistance provided to UNLV research efforts on habitat improvements at Blue Point, Rogers, and Pupfish Refuge springs.
• Relict Leopard Frog Conservation Team meeting held in December. …

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, October 1, 2007 To December 31, 2007, Margaret N. Rees

Vegetation Monitoring

Executive Summary

• The Weed Sentry program surveyed more than 750 miles of federal lands in Clark County for invasive, exotic plant species.
• Weed Sentry also removed more than 600,000 individual invasive plants from federal
  lands. These removals represent pro-active efforts that may have forestalled large
  infestations difficult and costly to eradicate.
• In response to a request by the manager of the Fish and Wildlife Service Desert National
  Wildlife Refuge, a major effort of surveying springs for plant community composition
  and invasive plants provided unique knowledge services by the Weed Sentry program.
  No such baseline information existed for the Sheep Range. …

Limnological Assistance For The Lake Mead National Recreation Area In Meeting The Challenge Of The Water 2025 Initiative: Quarterly Progress Report, Period Ending: December 31, 2007, Margaret N. Rees

Limnological Studies

• The limnologist position has been announced.
• Project 1: Review of the draft Boulder Basin Adaptive Management Plan is underway.
• Project 2: Development of a white paper expressing the joint needs of the entities involved in Water 2025 projects is being coordinated.
• Project 3: A bibliographic reference spreadsheet organizing literature citations related to quagga and zebra mussel research has been completed.
• Project 4: A comprehensive literature search of Lake Mead limnology is well underway; an Access database has been designed to organize reference citations; and a special collections library at UNLV is being established to house original rare documents and other …

Interagency Science And Research: Quarterly Progress Report, Period Ending December 31, 2007, Margaret N. Rees

Interagency Science and Research Strategy

• Meetings were held with the SNAP Recreation Team and the SNAP Cultural Resources Team to request assistance in the development of the science strategy. Draft versions of interagency goals, subgoals, science questions, and associated tasks were given to each team for review and input.
• Plans were prepared for the peer review of science proposals submitted for consideration as Conservations Initiatives in SNPLMA Round 9.
• Proceedings of the natural resources management workshop held on September 13 were completed and sent to the Science & Research Team for review by members.
• An important focus of the Science and Research Team was the …

Benthic Mapping For Habitat Classification In The Peconic Estuary: Phase I Groundtruth Studies, Robert M. Cerrato, Nicole P. Maher

School of Marine & Atmospheric Sciences Faculty Publications

Benthic habitat maps of the estuary seafloor will increase our knowledge of range and variability in benthic habitats, will assist managers in their efforts to protect and/or restore commercially and recreationally important finfish and shellfish, will link land usage (e.g. developed vs. undeveloped areas) and water quality data to benthic habitat quality, and will make it possible to utilize faunal data as a long-term indicator of the overall “health” of the estuary. We are developing benthic habitat maps by combining high-resolution remote sensing techniques with detailed study of the physical and faunal characteristics at point locations in different seafloor environments. …

Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Annual Progress Report, Period Ending September 30, 2007, Margaret N. Rees

Wildlife Monitoring

Project 1. Relict Leopard Frog Monitoring, Management, and Research

• Diurnal and nocturnal surveys completed at all natural and translocation sites during the spring – the most striking finding was the lack of frogs observed at Rogers Springs and lower Blue Point despite repeated survey efforts.
• Relict leopard frog annual translocation effort completed – a total of 1365 late stage tadpoles and 592 post-metamorphic frogs from the head-start facilities were released at existing translocation sites.
• Mark-recapture effort at Rogers Spring abandoned because of the lack of frogs; assistance provided for a mark-recapture study at upper Blue Point Spring.
• Potential translocation sites …

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Year-End Progress Report, October 1, 2006 To September 30, 2007, Margaret N. Rees

Vegetation Monitoring

Executive Summary

• The Weed Sentry program surveyed more than 750 miles of federal lands in Clark County for invasive, exotic plant species.
• Weed Sentry also removed more than 600,000 individual invasive plants from federal
  lands. These removals represent pro-active efforts that may have forestalled large
  infestations difficult and costly to eradicate.
• In response to a request by the manager of the Fish and Wildlife Service Desert National
  Wildlife Refuge, a major effort of surveying springs for plant community composition
  and invasive plants provided unique knowledge services by the Weed Sentry program.
  No such baseline information existed for the Sheep Range. …

Land Cover Types Of The Las Vegas Wash, Nevada, Seth A. Shanahan, Dave Silverman, Art Ehrenberg

Publications (WR)

Vegetation type, extent, continuity, and structure are some of the most important factors that determine wildlife diversity and distribution. Other contributing factors that shape wildlife communities include disturbance, competition, climate, and water availability. Because vegetation communities in the southwestern U.S. gradate sharply along zones of soil moisture, wildlife are often restricted to specific vegetation types. Along the Las Vegas Wash (Wash), Nevada, more than 250 wildlife species have been documented to occur in distinct wetland, riparian, and upland vegetation types. Recent studies have investigated the diversity and distribution of amphibians, birds, fishes, mammals, and reptiles (Shanahan 2005, 2005a, Van Dooremolen …

Green Crab Management: Reduction Of A Marine Invasive Population, Catherine E. De Rivera, Edwin D. Grosholz, Greg Ruiz, Amy A. Larson, Rebecca L. Kordas, Mark Sytsma

Environmental Science and Management Faculty Publications and Presentations

The overall goal of this study is to develop and demonstrate the capacity for local eradication of adult Carcinus maenas, European green crabs. This represents a conceptual shift in development of management options to address established invasions in marine systems, extending and exploring the application of terrestrial successes in this area. Specifically, this project tests the effects of removing green crabs from Bodega Harbor on the green crab population and on native shore crabs eaten by green crabs.

Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending June 30, 2007, Margaret N. Rees

Wildlife Monitoring

Project 1. Relict Leopard Frog Monitoring, Management, and Research

• Nocturnal surveys completed at all natural and translocation sites – the most striking finding was the lack of frogs observed at Rogers Springs and lower Blue Point despite repeated survey efforts.
• Relict leopard frog annual translocation effort completed – a total of 1957 tadpoles and juvenile frogs released at six translocation sites.
• Potential translocation sites within Gold Butte assessed during site visits in late March.
• Coordination and assistance provided to UNLV research efforts on habitat improvements at Blue Point and Rogers Springs, and with proposed FWS actions to construct a tadpole …

Occurrences Of Small Mammal Species In A Mixedgrass Prairie In Northwestern North Dakota,, Robert K. Murphy, Richard A. Sweitzer, John D. Albertson

The Prairie Naturalist

Documentation is limited for many species of vertebrates in the northern Great Plains, particularly northwestern North Dakota (Bailey 1926, Hall 1981). Here we report relative abundances of small « 450 g) species of mammals that were captured incidental to surveys of amphibians and reptiles at Lostwood National Wildlife Refuge (LNWR) in northwestern North Dakota from 1985 to 1987 and 1999 to 2000. Our records include a modest range extension for one species. We also comment on relationships of small mammals on the refuge to vegetation changes associated with fire and grazing disturbances.

Review Of Appreciating Your Feathered Neighbors, By Dana Gardner And Nancy Overcott, Melinda G. Knutson

The Prairie Naturalist

Fifty Common Birds of the Upper Midwest. Watercolors by Dana Gardner; text by Nancy Overcott. 2006. University of Iowa Press, Iowa City, Iowa. 106 pages. $34.95 (cloth).

What's the best way to interest a friend in bird watching? Buy them a field guide, a CD of bird songs, or take them out bird watching? All of these ideas might work, but another approach is to tell personal stories and draw pictures of common birds in yards, parks, and natural areas where they live; help them "get to know their neighbors with feathers." That's exactly what Dana Gardner and Nancy Overcott …

Silphidae (Insecta: Coleoptera) Collected In North Central North Dakota, Including New Occurrences Of Thanatophilus Sagax (Mannerheim),, Guy A. Hanley

The Prairie Naturalist

Members of the beetle family Silphidae are relatively large (10-35 mm) and often brightly colored insects. They usually are found in association with dead animal bodies (carrion), but some are phytophagous while others are predatory. Thirty endemic species are known to occur in North America north of Mexico (Ratcliffe 1996), and 17 species in North Dakota. (Hanley et aI., unpublished data). To date, there has been little to no silphid collection data available from north central North Dakota counties, due mostly to the lack of entomological research in the area.

Nine species of silphids were collected in a single season …

Editor's Note Regarding Christmas Bird Count, Elmer J. Finck

The Prairie Naturalist

Lawrence Igl has agreed to summarize the North Dakota Christmas Bird Counts for submission to The Prairie Naturalist. We plan to have a short biography for Larry when the first summary is published. Elmer J. Finck, Editor

In Memoriam Robert N. Randall, October 26, 1915 - January 30, 2007, Clark Talkington

The Prairie Naturalist

Among his friends, Bob Randall will be remembered as a caring, gentle man. Bob was one of those rare individuals who had a keen awareness of everyone around him. In social settings, he would make sure that everyone was comfortable, and it was always clear that he was genuinely concerned about everyone. Those who knew him will greatly miss his gentle nature and enthusiasm for birds. He never got caught up in all of his achievements. He had a sense of balance to his life which was evident in his many interests including birding and bird banding, rocks and minerals, …

First Record Of Field Speedwell From South Dakota, Robert Tatina

The Prairie Naturalist

Veronica agrestis L. (field speedwell or green field speedwell), a member of the Scrophulariaceae, is a small, weedy, prostrate annual with blue or white flowers (Gleason and Cronquist 1991). Until recently, its distribution included most of the eastern half of the United States and the southern two-thirds of the Great Plains, but not South Dakota (http://plants.usda.gov/java/profile?symbol=VEAG &photoID=veag_001_avd.tif, accessed 5 February 2007). Neither the Great Plains Flora Association (1986) nor Van Bruggen (1996) includes this species in the flora of South Dakota; however, the former has it naturalized in southeastern Nebraska and in Iowa (Great Plains Flora Association 1986). In May, …

Burrowing Owl Associations With Black-Tailed Prairie Dog Colonies In Southwestern Kansas And Southeastern Colorado, Stephen L. Winter, Jack F. Cully Jr.

The Prairie Naturalist

We quantified the use of black-tailed prairie dog (Cynomys ludovicianus) colonies as habitat for the burrowing owl (Athene cunicularia) in southwestern Kansas and southeastern Colorado. We used incidental sightings and breeding season avifauna surveys to document the presence of the burrowing owl on black-tailed prairie dog colonies, non-colonized rangeland, and cropland during the spring and early summer. Burrowing owl rarely was observed on noncolonized rangeland and cropland sites, and black-tailed prairie dog colonies appear to be used substantially as a habitat type for the burrowing owl in the region encompassing Cimarron and Commanche National Grasslands in …

Using Distance Sampling To Estimate Densities Of White-Tailed Deer In South-Central Minnesota, Michelle A. Larue, Clayton K. Nielsen, Marrett D. Grund

The Prairie Naturalist

Distance sampling is a method of estimating population abundance and density used by wildlife biologists for several species because of its advantages relative to other techniques. However, few wildlife biologists have used distance sampling to estimate abundance of white-tailed deer (Odocoileus virginianus). We describe a distance sampling technique used to estimate prehunt and post-hunt population densities of deer in Watonwan County, Minnesota. Estimates of white-tailed deer density were compared between distance sampling versus population modeling, and costs for distance sampling versus aerial surveys were determined. We drove 2,704 km during 24 spotlight surveys conducted from 21 October to …

The Prairie Naturalist, Volume 39, No. 2 June 2007

The Prairie Naturalist

USING DISTANCE SAMPLING TO ESTIMATE DENSITIES OF WHlTE-TAILED DEER IN SOUTH-CENTRAL MINNESOTA, M. A. LaRue, C. K. Nielsen, and M. D. Grund

BURROWING OWL ASSOCIATIONS WITH BLACK-TAILED PRAIRIE DOG COLONIES IN SOUTHWESTERN KANSAS AND SOUTHEASTERN COLORADO, S. L. Winter and J. F. Cully, Jr.

OPTIMAL FORAGING IN EASTERN FOX SQUIRREL: FOOD SIZE MATTERS FOR A GENERALIST FORAGER, R. Tatina

IN MEMORIAM: ROBERT N. RANDALL. C. Talkington

Editor's Note regarding Christmas Bird Count

OCCURRENCES OF SMALL MAMMAL SPECIES IN A MIXEDGRASS PRAIRIE IN NORTHWESTERN NORTH DAKOTA, R. K. Murphy, R. A. Sweitzer, and J. D. Albertson

SILPHIDAE (INSECTA: COLEOPTERA) COLLECTED IN …

Optimal Foraging In Eastern Fox Squirrel: Food Size Matters For A Generalist Forager, Robert Tatina

The Prairie Naturalist

Classical optimal foraging theory (OFT) predicts that an animal forages optimally when it chooses foods with the highest energy benefit or minimizes time searching for and handling food. r evaluated OFT by presenting eastern fox squirrel (Sciurus niger) multiple food items (i.e., sunflower seeds and • fruits) in various density combinations. When the choice was between foods of equal energy benefits but different costs, they chose forage items with greater costs, seemingly not foraging optimally. However, individuals showed a partial preference for food items which minimized search time, but not handling time. The eastern fox squirrel also was …

Marshes-In Photos And Words. Review Of Marshes: The Disappearing Edens By Bill Burt, Douglas H. Johnson

The Prairie Naturalist

Bill Burt has done it again. The author of two superbly illustrated books (Shadowbirds and Rare and Elusive Birds of North America) that were reviewed earlier in this journal, Burt has returned with another excellent book, this one focusing on marshes. Like his earlier books, Marshes features wonderful close-up views of many hard-to-photograph birds. Here, in addition, are grand images of marsh landscapes and other marsh denizens, especially plants. Burt best characterizes his own book, which he intends as "an evocation and exploration, rather than a catalog of marshland life." He tells of his 30 years spent prowling …

Notes On Black-Footed Ferret Detectability And Behavior, David S. Jachowski

The Prairie Naturalist

Despite over two decades of recovery efforts, the black-footed ferret (Mustela nigripes) remains one of the least understood and most critically endangered mammals in North America. Once extinct in the wild, over 2,400 captive-born individuals of black-footed ferret (hereafter referred to as ferret) have been released at 13 reintroduction sites ranging from northern Montana to Chihuahua, Mexico, since 1991. However, ferret populations currently are considered to be self-sustaining at only two sites in South Dakota and a single site in Wyoming (United States Fish and Wildlife Service 2006). To understand why ferret recovery is not succeeding at a …

Education In The Environment: A Hands-On Student Research And Outdoor Learning Experience: Final Project Report, Environmental Education Strategy For Nevada

Reports (PLI Education)

Education in the Environment: A Hands‐on Student Research and Outdoor Learning Experience is a Round 4 Southern Nevada Public Land Management Act (SNPLMA)‐funded project implemented by the University of Nevada, Las Vegas Public Lands Institute on behalf of and in cooperation with four Federal agencies in Southern Nevada. This project consisted of three components: (1) an Interagency Conservation Education and Interpretation Strategy; (2) Discover Mojave Forever Earth, an environmental laboratory and learning center; and (3) Southern Nevada Discover Mojave Outdoor World program.

Homogenization Of Forest Plant Communities And Weakening Of Species-Environment Relationships Via Agricultural Land Use, Mark Vellend, Kris Verheyen, Kathryn M. Flinn, Hans Jacquemyn, Annette Kolb, Hans Van Calster, George Peterken, Bente Jessen Graae, Jesse Bellemare, Olivier Honnay, Jörg Brunet, Monika Wulf, Fritz Gerhardt, Martin Hermy

Biological Sciences: Faculty Publications

Disturbance may cause community composition across sites to become more or less homogenous, depending on the importance of different processes involved in community assembly. In north-eastern North America and Europe local (alpha) diversity of forest plants is lower in forests growing on former agricultural fields (recent forests) than in older (ancient) forests, but little is known about the influence of land-use history on the degree of compositional differentiation among sites (beta diversity). Here we analyse data from 1446 sites in ancient and recent forests across 11 different landscapes in north-eastern North America and Europe to demonstrate decreases in beta diversity …

First Record Of Corisella Inscripta (Uhler) (Heteroptera: Corixidae) From North Dakota, Bruce A. Hanson, David M. Mushet, Ned A. Euliss Jr., Stephen Chordas Iii

The Prairie Naturalist

Corisella inscripta is a water boatman species that was reported in H. B. Hungerford's (1948) seminal monograph as occurring throughout Mexico and nine western states of the United States. Subsequently, additional records of C. inscripta have been reported for British Columbia in Canada (Maw et al. 2000) and for Montana (Roemhild 1976), Arkansas (Cochran and Harp 1990), Missouri (Polhemus et al. 1988), Ohio (Chordas and Armitage 1998), and Michigan (Chordas et al. 2002) in the United States. There have been no published records of C. inscripta from North Dakota (Fig. I). We collected one male C. inscripta at the Cottonwood …

Review Of Some Scarce Birds Of The Upper Midwest By Dana Gardner And Nancy Overcott, Stephen J. Dinsmore

The Prairie Naturalist

Fifty Uncommon Birds of the Upper Midwest. Watercolors by Dana Gardner; text by Nancy Overcott. 2007. University of Iowa Press, Iowa City, Iowa. 112 pages. $34.95 (cloth).

Nancy Overcott has written series of short essays of birds found in the Upper Midwest and assembled them in an easy-to-read book. As an ornithologist and avid birder in this region, I'll admit that I didn't know what to expect when I opened the cover-would the focus be on rarities, would there be an identification component, are there tips for finding each species, and at what audience was the book aimed? Ultimately, I …

Linking Flux Network Measurements To Continental Scale Simulations: Ecosystem Carbon Dioxide Exchange Capacity Under Non-Water-Stressed Conditions, Katherine B. Owen, John Tenhunen, Markus Reichstein, Quan Wang, Eva Falge, Ralf Geyer, Xiangming Xiaos, Paul Stoy, Christof Ammann, Altaf Arain, Marc Aubinet, Mika Aurela, Christian Bernhofer, Bogdan Chojnicki, Andre Granier, Thomas Gruenwald, Julian Hadley, Bernard Heinesch, David Hollinger, Alexander Knohl, Werner Kutsch, Annalea Lohila, Tilden Meyers, Eddy Moors, Christine Moureaux, Kim Pilegaard, Nobuko Saigusa, Shashi Verma, Timo Vesala, Chris Vogel

School of Natural Resources: Faculty Publications

This paper examines long-term eddy covariance data from 18 European and 17 North American and Asian forest, wetland, tundra, grassland, and cropland sites under nonwater- stressed conditions with an empirical rectangular hyperbolic light response model and a single layer two light-class carboxylase-based model. Relationships according to ecosystem functional type are demonstrated between empirical and physiological parameters, suggesting linkages between easily estimated parameters and those with greater potential for process interpretation. Relatively sparse documentation of leaf area index dynamics at flux tower sites is found to be a major difficulty in model inversion and flux interpretation. Therefore, a simplification of the …

Impact Of Minimum Winter Temperatures On The Population Dynamics Of Dendroctonus Frontalis, J. KhảI TrầN, Tiina Ylioja, Ronald F. Billings, Jacques Régnière, Matthew P. Ayres

Dartmouth Scholarship

Predicting population dynamics is a fundamental problem in applied ecology. Temperature is a potential driver of short-term population dynamics, and temperature data are widely available, but we generally lack validated models to predict dynamics based upon temperatures. A generalized approach involves estimating the temperatures experienced by a population, characterizing the demographic consequences of physiological responses to temperature, and testing for predicted effects on abundance. We employed this approach to test whether minimum winter temperatures are a meaningful driver of pestilence from Dendroctonus frontalis (the southern pine beetle) across the southeastern United States. A distance-weighted interpolation model provided good, spatially explicit, …

Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending March 31, 2007, Margaret N. Rees

Wildlife Monitoring

Project 1. Relict Leopard Frog Monitoring, Management, and Research

• Spring-time diurnal surveys for relict leopard frogs were conducted at all sites.
• Relict leopard frog annual translocation effort was initiated. Currently, 2,153 tadpoles are being reared at the Hill Top and Willow Beach Fish Hatchery facilities. Quagga mussels found at the hatchery might not be as problematic for this program as originally thought. Current prophylactic protocols for disease treatment in tadpoles and frogs are being evaluated for their ability to kill quagga mussel larvae.
• Coordination and monitoring was provided to EPMT crews conducting tamarisk control at relict leopard frog sites in …

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, Period Ending March 31, 2007, Margaret N. Rees

Vegetation Monitoring

Executive Summary

• Weed Sentry staff surveyed for exotic species on 208 miles of roads on NPS land and on 61 miles of BLM land. Due to sparse precipitation this winter, exotic species are much less abundant this year compared to last year at this time.
• Other exotic species projects initiated this quarter included an assessment of invasion patterns below native shrubs for early detection of potential invasion “hotspots,” and a community invasibility experiment established near the NPS nursery with substantial involvement from NPS ATR Ms. Alice Newton.
• A manuscript detailing several experiments with the invasive species Sahara mustard was submitted …