Digital Commons Network^™

Type 3 Functional Response Of Mice To Gypsy Moth Pupae: Is It Stabilizing?, Eric M. Schauber, Richard S. Ostfeld, Clive G. Jones

Publications

We conducted field experiments in 2002 and 2003 to determine whether the functional response of white-footed mice (Peromyscus leucopus ) to gypsy moth (Lymantria dispar ) pupae is decelerating (e.g. type 2) or accelerating (e.g. type 3) at low pupal density. In both experiments, live gypsy moth pupae were deployed in June (prior to the appearance of natural pupae) at densities of approximately 1, 8, and 35 pupae per mouse home range in oak-forest grids in upstate New York and monitored over 10 days for signs of predation. Pupae were deployed 1.5-m high on tree boles in 2002, whereas in …

Size Matters: A Test Of Boldness In Eight Populations Of The Poeciliid Brachyraphis Episcopi, Culum Brown, Victoria Braithwaite

Sentience Collection

Individual variation in behaviour within populations may be explained in part by demographics and long-term, stable individual psychological differences. We examined the relation between boldness (taken as the time to emerge from a shelter and explore a novel environment) and body size in eight populations of the poeciliid Brachyraphis episcopi originating from sites upstream and downstream of waterfalls in four rivers that run into the Panama Canal. The relation between body size and time to emerge from a shelter was positive, with larger fish taking longer to emerge. This relation differed between downstream and upstream sites, being significant in the …

Cryptotis Meridensis, Neal Woodman, Amelia Dıaz De Pascual

United States Geological Survey: Staff Publications

CONTEXT AND CONTENT.

Order Soricomorpha, family Soricidae, subfamily Soricinae, tribe Blarinini, genus Cryptotis (Hutterer 1993; Repenning 1967). The species is part of the Cryptotis thomasi group (Choate 1970; Woodman 2002). Cryptotis meridensis is monotypic (Woodman 2002).

DIAGNOSIS.

Cryptotis meridensis (Fig. 1) is one of the largest members of the genus; length of head and body is typically >83 mm. C. meridensis and the Mexican endemic, C. phillipsii, are the only species of small-eared shrews in which U4 (dental terminology follows that of Choate [1970] and Choate and Fleharty [1974]) frequently is absent. In C. meridensis, U4 is absent …

Annotated Bibliography Of The Florida Applesnail, Pomacea Paludosa (Say) (Gastropoda: Ampullariidae), From 1824 To 1999, Richard L. Turner, Paula M. Mikkelsen

Ocean Engineering and Marine Sciences Faculty Publications

The Florida applesnail, Pomacea paludosa (Say, 1829), inhabits freshwater rivers, lakes, and wetlands of the southeastern United States and Cuba, where it is prey to several species of birds, reptiles, and fish, particularly the snail kite, limpkin, American alligator, and redear sunfish. It has additionally been a staple in the diet of several native human populations. Introduction of exotic aquatic vegetation and the management practices of the 1900s have impacted the availability of P. paludosa to its predators, some of which are listed on federal and state registries of species that are endangered, threatened, or of special concern. Its association …

Marine Baitfish Culture, Michael J. Oesterling, Charles M. Adams, Andy M. Lazur

Reports

No abstract provided.

Education In The Environment: A Hands-On Student Research And Outdoor Learning Experience: Quarterly Progress Report, Period Ending November 30, 2004, Margaret N. Rees

Reports (PLI Education)

During the past three-months, the focus of the university’s efforts has been 1) making progress on the hiring of permanent project managers for the Education in the Environment Strategy and the Forever Earth / Wonderful Outdoor World on the Water (WOW) projects; 2) completing legal review of the cooperative agreement and standard operating procedures required for the university to assume operations of the Forever Earth vessel; and 3) writing curriculum for the WOW and Forever Earth projects.

Red Rock Desert Learning Center Core Group Meeting: November 16, 2004, Red Rock Desert Learning Center

Reports (RRLC)

1. Introductions (5 min.)
2. Approval of Minutes from October 19 Meeting (5 minutes)
3. Presentation of Biology Curriculum Strands – Paul Buck (15 min.)
4. Discussion of Possible Advisory Board Structures – Michael Reiland (15 min.)
5. Update from Line and Space Architects – Les Wallach/Henry Tom (20 min.)
6. Discussion of Student Risk Analysis/Liability Issues (15 min.)
7. Standing Reports (10 minutes)
   A. UNLV/CESU Update – Nancy Flagg
   B. BLM Update – Michael Reiland
8. Committee Reports (5 min.)
   A. Building Committee – Angie Lara
9. Open Discussion / New Business (5 min.)
   A. January Meeting – Tuesday, January 18, 10:30 a.m., UNLV Paradise
   Campus
   B. Core …

Parasitism In Species Of Bathymodiolus (Bivalvia : Mytilidae) Mussels From Deep-Sea Seep And Hydrothermal Vents, Me Ward, Jeffrey D. Shields, Cl Van Dover

VIMS Articles

Bivalve species, especially mussels, are biomass dominants in many deep-sea chemosynthetic ecosystems. As in shallow-water environments, parasites are likely to be important factors in the population dynamics of bivalve communities in chemosynthetic ecosystems, but there has been little study of parasitism in deep-sea seep or vent molluscs. In this study, Parasite types, diversity, prevalence, infection density and non-infectious indicators of stress or disease as related to host age, reproductive condition, and endosymbiont density were assessed in mussels (Bathmodiolus heckerae) from 2 seep sites and mussels (B. puteoserpentis) from 2 vent sites. We identified 10 microbial or parasitic agents in histological …

Rotunda - Vol 84, No 7 - Oct 28, 2004, Longwood University

Rotunda

No abstract provided.

Red Rock Desert Learning Center Core Group Meeting: October 19, 2004, Red Rock Desert Learning Center

Reports (RRLC)

1. Introductions (5 min.)
2. Approval of Minutes from September 21 Meeting (5 minutes)
3. Review & Discussion of Suggested Core Curriculum Themes – Jeanne Klockow/Michael Reiland (20 min.)
4. Update from Line and Space Architects – Les Wallach/Henry Tom (20 min.)
5. Standing Reports (20 minutes)
   A. UNLV/CESU Update – Nancy Flagg
   C. BLM Update – Michael Reiland
6. Committee Reports (10 min.)
   A. Building – Angie Lara
   B. Design Oversight – David Frommer
   C. Educational Programs – Paul Buck
   D. Fund-Raising & Partnerships – Blaine Benedict
   E. NEPA – Charles Carroll
   F. Operations – Jack Ramsey
   G. Other Uses – Pat Williams
   H. Wild …

Spatial Heterogeneity, Not Visitation Bias, Dominates Variation In Herbivory: Comment & Reply, James F. Cahill, Brenda B. Casper, David S. Hik, Svata M. Louda, Anne M. Parkhurst, Kate L. Bradley, Elisabeth S. Bakker, Johannes M. H. Knops, Ellen I. Damschen, Lauren M. Young

School of Biological Sciences: Faculty Publications

An exchange regarding the article: Bradley, K. L., E. I. Damschen, L. M. Young, D. Kuefler, S. Went, G. Wray, N. M. Haddad, J. M. H. Knops, and S. M. Louda. 2003. Spatial heterogeneity, not visitation bias, dominates variation in herbivory. Ecology 84:2214–2221.

Cahill et al. write:
Here we show that the experimental design and statistical analysis used by Bradley et al. (2003) do not adequately control for Type II experimental error (accepting the null hypothesis when it is in fact false). This is particularly important when responses have low effect sizes such as those previously demonstrated for visitation effects …

Growth Of Stygobitic (Orconectes Australis Packardi) And Epigean (Orconectes Cristavarius) Crayfishes Maintained In Laboratory Conditions, Ann-Simone Cooper, Robin L. Cooper

Biology Faculty Publications

This study reports on maintenance and growth of the cave crayfish, Orconectes australis packardi, and the epigean crayfish, Orconectes cristavarius, with laboratory conditions for 1 and 2 years. The O. a. packardi survived well compared to the O. cristavarius in captivity. The poor survival of the epigean species was probably due to unsuitable conditions. The epigean as well as the cave crayfish molted and grew in captivity, but without any significant difference in molt frequency between species. In the first year, total body length was obtained to assay growth, whereas in the second year the more accurate measure …

Red Rock Desert Learning Center Core Group Meeting: September 21, 2004, Red Rock Desert Learning Center

Reports (RRLC)

1. Introductions (5 min.)
2. Approval of Minutes from August 17 Meeting (5 minutes)
3. Potential Tie-in with City of Las Vegas New Directions YouthArts Program –
   Markus Tracy (20 min.)
4. Presentation of Education in the Environment Curriculum Matrix and correlation to
   RRDLC curriculum development – Jeanne Klockow (30 min.)
5. Discussion of Policy-making Board for the Center – Michael Reiland (15 min.)
6. Discussion of Observatory Location – Michael Reiland (25 min.)
7. Standing Reports (20 minutes)
   A. Line and Space Architects Update – Les Wallach/Henry Tom
   B. UNLV/CESU Update – Nancy Flagg
   C. RRCNCA Capital Improvements Update – BLM
8. Committee Reports (10 min.)
   A. …

Cancer Incidence Among Pesticide Applicators Exposed To Atrazine In The Agricultural Health Study, Jennifer A. Rusiecki, Anneclaire De Roos, Won Jin Lee, Mustafa Dosemeci, Jay H. Lubin, Jane A. Hoppin, Aaron Blair, Michael C. R. Alavanja

Public Health Resources

Background: Atrazine is the most heavily applied agricultural pesticide for crop production in the United States. Both animal and human studies have suggested that atrazine is possibly carcinogenic, but results have been mixed. We evaluated cancer incidence in atrazine-exposed pesticide applicators among 53 943 participants in the Agricultural Health Study, a prospective cohort study of licensed pesticide applicators in Iowa and North Carolina.
Methods: We obtained detailed pesticide exposure information using a self-administered questionnaire completed at the time of enrollment (1993–1997). Cancer incidence was followed through December 31, 2001. We used adjusted Poisson regression to calculate rate ratios (RRs) and …

Use Of Fecal Glucocorticoid Metabolite Measures In Conservation Biology Research: Considerations For Application And Interpretation, Joshua J. Millspaugh, Brian E. Washburn

United States Department of Agriculture Wildlife Services: Staff Publications

Fecal glucocorticoid metabolite analyses are increasingly being used by a variety of scientists (e.g., conservation biologists, animal scientists) to examine glucocorticoid (i.e., stress hormone) secretion in domestic and wild vertebrates. Adrenocortical activity (i.e., stress response) is of interest to conservation biologists because stress can alter animal behavior, reduce resistance to disease, and affect population performance. The noninvasiveness of fecal-based assessments is attractive, particularly when studying endangered species, because samples can often be obtained without disturbing the animal. Despite such advantages, many confounding factors inhibit the utility of this technique in addressing conservation problems. In particular, interpretation of fecal glucocorticoid metabolite …

Education In The Environment Partnership, Public Lands Institute

Presentations (PLI Education)

• Update on Oliver Ranch
• Update on Forever Earth
• Update on WOW on the Water

The Analysis Of A Late Holocene Bison Skull From The Ashley National Forest, Utah, Kenneth P. Cannon

United States National Park Service: Publications

Executive Summary

In 2003 a partial bison skull was recovered by Ashley National Forest archeologist Brian Storm from an elevation of 3840 m (12,600 ft) AMSL in the Uinta Mountains. The partial skull consists of a portion of the frontal, occipital region, and horn cores including horn sheaths. The presence of the horn sheaths is of particular interest for the ecological information they can provide. Through the analysis of the individual cones of the horn sheath a record of the animal’s dietary and migration patterns can be obtained.

The skull was recovered downslope of Gilbert Peak in an alpine environment. …

Historical Evidence Of Riparian Forests In The Great Plains And How That Knowledge Can Aid With Restoration And Management., Elliot West, Greg Ruark

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

While some argue that the Great Plains were dominated by grasslands and that riparian woodlands were rare, others contend that trees would logically have occurred in riparian areas due to favorable microenvironment conditions. Historically, what native plant communities were found in riparian zones of the Great Plains? The answers to this question depend to a large extent on what time period is used as a reference of pre-settlement conditions.

The U.S. Fish and Wildlife Service (1981) drew upon conditions in 1905 for insight and concluded that trees were “wholly absent” or consisted of scattered cottonwood and willow. However, such a …

Tree Islands In The Shark Slough Landscape: Interactions Of Vegetation, Hydrology, And Soils, Michael S. Ross, David T. Jones

SERC Research Reports

Executive Summary: This report presents what we have learned about tree islands of Shark Slough and adjacent marshes of Everglades National Park (ENP), based on ecological studies carried out in these wetlands during the period 2000-2003. The tree islands of Shark Slough share many features with tree islands elsewhere in the Everglades. Their current composition and community structure is determined to a large extent by recent hydrology, as well as by disturbances (fire, freezes, hurricanes, man). Tree islands have historical, cultural, and biological values that are recognized by nearly all parties to the Comprehensive Everglades Restoration Plan (CERP). Maintaining and/or …

Unh: The Magazine Of The University Of New Hampshire, Fall 2004, Unh Magazine

UNH Magazine

Archived version of web content originally found at https://unhmagazine.unh.edu/pastissues.html

Oliver Ranch Core Group Meeting: August 17, 2004, Red Rock Desert Learning Center

Reports (RRLC)

1. Introductions (5 minutes)
2. Approval of Minutes from June 15 Meeting (5 minutes)
3. Review of Draft Talking Points/FAQ – Nancy Flagg (30 min)
4. Discussion of Wild Horse and Burro Facility – Billie Young (30 min.)
5. Standing Reports (30 minutes)
   A. Line and Space Update – Les Wallach/Henry Tom
   B. UNLV/CESU Update – Peg Rees/Nancy Flagg
   C. RRCNRA Capital Improvements Update – Mark Morse/Michael Reiland
6. ORSS Committee Reports (15 minutes)
   A. Design Oversight – David Frommer
   B. Educational Programs – Paul Buck
   C. Fund-Raising & Partnerships – Blaine Benedict
   D. NEPA – Charles Carroll
   E. Operations – Jack Ramsey
   F. Other Uses …

Ecological Research In The Large Scale Biosphere Atmosphere Experiment In Amazonia: A Discussion Of Early Results, Michael M. Keller, Ane Alencar, Gregory P. Asner, Rob Braswell, Mercedes Bustmante, Eric A. Davidson, Ted Feldpausch, Erick Fernandes, M L. Goulden, Paval Kabat, Bart Kruijt, Flavio Luizao, Scott Miller, Daniel Markewitz, Antonio D. Nobre, Carlos Nobre, Nicolau Priante Filho, Humberto Da Rocha, Pedro Silva Dias, Celso Von Randow, George Vourlitis

Earth Sciences

The Large-scale Biosphere–Atmosphere Experiment in Amazonia (LBA) is a multinational, interdisciplinary research program led by Brazil. Ecological studies in LBA focus on how tropical forest conversion, regrowth, and selective logging influence carbon storage, nutrient dynamics, trace gas fluxes, and the prospect for sustainable land use in the Amazon region. Early results from ecological studies within LBA emphasize the variability within the vast Amazon region and the profound effects that land-use and land-cover changes are having on that landscape. The predominant land cover of the Amazon region is evergreen forest; nonetheless, LBA studies have observed strong seasonal patterns in gross primary …

Predicting The Ecological Outputs Of Increased Base Flows In Ephemeral Texas Streams: Results From Field Investigation, Wilkins

2004

No abstract provided.

Oliver Ranch Core Group Meeting: July 20, 2004, Red Rock Desert Learning Center

Reports (RRLC)

1. Introductions (5 minutes)
2. Approval of Minutes from June 15 Meeting (5 minutes)
3. Review of Draft Talking Points/FAQ – Nancy Flagg (30 min)
4. Discussion of Wild Horse and Burro Facility – Billie Young (30 min.)
5. Standing Reports (30 minutes)
   A. Line and Space Update – Les Wallach/Henry Tom
   B. UNLV/CESU Update – Peg Rees/Nancy Flagg
   c. RRCNRA Capital Improvements Update – Mark Morse/Michael Reiland
6. ORSS Committee Reports (15 minutes)
   A. Design Oversight – David Frommer
   B. Educational Programs – Paul Buck
   C. Fund-Raising & Partnerships – Blaine Benedict
   D. NEPA – Charles Carroll
   E. Operations – Jack Ramsey
   F. Other Uses …

Molecular Analysis Of Carbon Monoxide-Oxidizing Bacteria Associated With Recent Hawaiian Volcanic Deposits, Kari E. Dunfield, Gary M. King

Faculty Publications

Genomic DNA extracts from four sites at Kilauea Volcano were used as templates for PCR amplification of the large subunit (coxL) of aerobic carbon monoxide dehydrogenase. The sites included a 42-year-old tephra deposit, a 108-year-old lava flow, a 212-year-old partially vegetated ash-and-tephra deposit, and an approximately 300-year-old forest. PCR primers amplified coxL sequences from the OMP clade of CO oxidizers, which includes isolates such as Oligotropha carboxidovorans, Mycobacterium tuberculosis, and Pseudomonas thermocarboxydovorans. PCR products were used to create clone libraries that provide the first insights into the diversity and phylogenetic affiliations of CO oxidizers in situ. On the basis of …

Effects Of Natal Departure And Water Level On Survival Of Juvenile Snail Kites (Rostrhamus Sociabilis) In Florida, Victoria J. Dreitz, Wiley M. Kitchens, Donald L. Deangelis

Wildlife Biology Faculty Publications

Survival rate from fledging to breeding, or juvenile survival, is an important source of variation in lifetime reproductive success in birds. Therefore, determining the relation-ship between juvenile survival and environmental factors is essential to understanding fitness consequences of reproduction in many populations. With increases in density of individuals and depletion of food resources, quality of most habitats deteriorates during the breeding season. Individuals respond by dispersing in search of food resources. Therefore, to understand the influence of environmental factors on juvenile survival, it is also necessary to know how natal dispersal influences survival of juveniles. We examined effects of various …

Incidence, Size And Spatial Structure Of Clones In Second-Growth Stands Of Coast Redwood, Sequoia Sempervirens (Cupressaceae), Vladimir Douhovnikoff, Adelaide M. Cheng, Richard S. Dodd

Biology Faculty Publications

The ecology and evolutionary potential of coast redwood (Sequoia sempervirens) is significantly influenced by the important role clonal spread plays in its reproduction and site persistence. In nine second-growth stands, amplified fragment length polymorphisms (AFLPs) were used to identify redwood clonal architecture. Clones (multistem genets) dominated sites by representing an average of 70% of stems measured, ranging in size from two to 20 stems. As a result, a relatively small number of genets can monopolize a disproportionate amount of site resources, are more likely to persist over time, and have greater on-site genetic representation. Clones were not limited to fairy-ring …

Retrospective Isotopic Analyses Of Stellar Sea Lion Tooth Annuli And Sea-Bird Feathers: A Cross-Taxa Approach To Investigating Regime And Dietary Shifts In The Gulf Of Alaska, Keith Hobson, Elizabeth Sinclair, Anne York, James Thomason, Richard Merrick

United States Department of Commerce: Staff Publications

Stable isotope (δ¹⁵N and δ¹³C) values of individual tooth annuli of female Steller sea lions (n = 120) collected from the 1960s through the 1980s were used for retrospective analyses of temporal changes in food webs in the Gulf of Alaska and North Pacific Ocean. We also examined isotopically contour feathers of tufted puffins (n = 135) and crested auklets (n = 37) through this period to test for broader isotopic patterns indicative of whole food web changes. Steller sea lions decreased slightly in δ¹³C and increased in δ¹⁵N values, suggesting an …

Oliver Ranch Core Group Meeting: June 15, 2004, Red Rock Desert Learning Center

Reports (RRLC)

1. Approval of Minutes from May 18 Meeting
2. UNLV/CESU Update – Peg Rees/Nancy Flagg
   A. ORSS History and Talking Points
   B. Presentations to Civic Groups
3. Line and Space Update – Les Wallach/Henry Tom
4. RRCNRA Capital Improvements Update – Mark Morse
5. ORSS Project Timeline – Michael Reiland
6. Linkages Between ORSS Curriculum and Building Design – Paul Buck
7. Video Interviews of CCSD 5th Graders – CCSD Staff
8. ORSS Sub-Committee Reports
   -- Status of Committee Mission Statements
   -- Committee Responses to L&S Draft
   -- Proposal to Establish a Building Committee
   A. Operations – Jack Ramsey
   B. Wild Horse & Burro – Billie Young
   C. …

Tide, Buoyancy, And Wind-Driven Circulation Of The Charlotte Harbor Estuary: A Model Study, Lianyuan Zheng, Robert H. Weisberg

Marine Science Faculty Publications

The circulation of the Charlotte Harbor (CH) estuary is explored with a primitive equation model that encompasses the estuary and the adjacent West Florida Shelf. Tidal forcing is from the shelf through the inlets. We use the M₂, S₂, K₁, and O₁ constituents that account for 95% of the shelf tidal variance. River inflows are by the Peace, Myakka, and Caloosahatchee Rivers at their spring 1998 mean values. Wind effects are considered for upwelling or downwelling favorable winds that are either held constant or allowed to oscillate with varying periodicities. These factors are …