Digital Commons Network^™

Production Of The Subtropical Seagrass, Halodule Wrightii Aschers., In Lower Laguna Madre, Texas, Joseph L. Kowalski

Theses and Dissertations - UTB/UTPA

The autecology of shoal grass, Halodule wrightii Aschers., was studied at 1.2 m depth from June 1995 to February 1997 in Lower Laguna Madre (LLM), Texas. Halodule wrightii in LLM received about 47% surface irradiance, but otherwise displayed lower growth rates and biomass in nutrient-poor rhizosphere and water-column environments compared to H. wrightii populations in other Texas estuaries. High tissue N content and low C:N ratios belied low growth dynamics. Halodule wrightii in LLM is probably nutrient limited. A high nutrient demand by H. wrightii in a nutrient-poor environment may explain, in part, its gradual displacement by Thalassia testudinum and …

Evaluation Of Sampling Methodologies For Assessing Fish Species Richness In Ridge And Valley Streams In Chattanooga, Tennessee, Evan Robertson Crews

Masters Theses and Doctoral Dissertations

I evaluated the adequacy of different electrofishing approaches for estimating species richness in small Ridge and Valley streams. My study objectives were to determine the effects of the sampling season, reach length, habitat sequences surveyed, and sampling intensity on estimates of fish species richness. Fish assemblages were sampled at 18 sites across five streams in the Chattanooga, Tennessee area, May-June (spring) and July-August (summer) 1998. Reach lengths ranged from 103 to 278 m (30 to 61 times the mean stream width [MSW]). At each site, fish were collected using one or two backpack electrofishers within habitat-specific enclosures (riflle-run or pool). …

Effects Of Watershed Land Use On The Benthic Macroinvertebrate Assemblages In Ridge And Valley Streams In Chattanooga, Tennessee, Paul Leiper Freeman

Masters Theses and Doctoral Dissertations

A total of 20 sites in five Ridge and Valley streams located in Chattanooga, Tennessee were sampled May 8, 1998 to June 18, 1998 using quantitative and qualitative macroinvertebrate sampling techniques. All streams sampled were part of the Tennessee River drainage system and eventually contribute to Nickajack Reservoir. The 20 sites were second to fourth order streams with drainage areas of 3.8 to 46.9 (km2) and elevations of 195 to 232 (m). Sites with different percentages of agricultural, urbanized and forested land-use were selected to best evaluate the resulting impacts of urbanization and other anthropogenic activities on the invertebrate community …

The Probe, Issue 205 – October 1999

The Probe: Newsletter of the National Animal Damage Control Association

Legislative News: Senate Kills Anti-Trapping Measure
Washington Stalls Anti-Trap Bills
Raccoon Roundworm Brochure Available
NWRC Biologist George Matschke Retires
Problem Mexican Gray Wolves Being Relocated
Chipmunk Found Rabid
Rock Star Scares Birds --"What the birds really hate is Tina Turner."
Rat Travels Business Class
What's Killing Colorado Deer?

Abstracts from the 2nd International Wildlife Management Congress, Hungary

History and Present Status of the European Beaver (Castor fiber) in Poland, with Implications for Beaver Management Programs -- A. Czech, Institute of Environmental Biology, Jagiellonian University, Krakow, Poland
Assessment of Elephant Damage and Mitigation Options in Amboseli Basin, Kenya -- E.E. Esikuri* …

Resource Partitioning Between Coyotes And Swift Foxes: Space, Time, And Diet, Ann M. Kitchen, Eric M. Gese, Edward R. Schauster

USDA Wildlife Services: Staff Publications

In its current distribution and abundance, the swift fox (Vulpes velox) has been significantly reduced from its historic range. A possible cause is competition with, and predation by, coyotes (Canis latrans). We investigated the level of spatial, temporal, and dietary resource use overlap between swift foxes and coyotes at the Pinon Canyon Maneuver Site in southeastern Colorado. We captured and radio-tracked 73 foxes and 24 coyotes from April 1997 to August 1998. We collected 10 832 and 5350 locations of foxes and coyotes, respectively. Overall, home-range sizes of foxes and coyotes were 7.6 ± 0.5 (mean ± SE) …

The Crest, Summer 1999, Virginia Institute Of Marine Science

Reports

Table of Contents:

• New Research Aquarium System
• Finfish Aquaculture at VIMS
• Virginia Creates State Research Reserve System
• Pollution-Laden Sediments In Constant Flux
• Survey of Mid-Atlantic Sea Scallop Closed Areas
• Pfiesteria Update
• New Computer Program Helps Planners Balance Growth, Protection
• Virginia Sea Grant to Administer Commercial Fishery Resource Program
• VIMS Stranded Sea Turtle Project Underway Coastal Sediments Offer Clues to Climate Change, Pollution
• Seemingly Barren Habitat Proves Vital for Economically Important Virginia Fish (juvenile flounder)

The Prairie Naturalist Volume 31, No.2 June 1999

The Prairie Naturalist

SPATlAL VARIATION IN POPULATION CHARACTERISTICS OF SHOVELNOSE STURGEON IN THE KANSAS RIVER ▪ M. C. Quist and C. S. Guy

INFLUENCE OF FIRE AND TRAPPING EFFORT ON GROUND BEETLES IN A RECONSTRUCTED TALLGRASS PRAIRIE ▪ K. J. Larsen and J. B. Williams

FISH ASSEMBLAGES AND HABITAT RELATIONSHIPS IN A SMALL NORTHERN GREAT PLAINS STREAM ▪ C. A. Barfoot and R. G. White

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA 1998 ▪ R. N. Randall

NEW RECORDS OF THE PYGMY SHREW IN SOUTHEAST SOUTH DAKOTA ▪ C. B. King, G. M. Wilson, and P. D. Sudman

BUFFLEHEAD BROOD IN NORTHEASTERN SOUTH DAKOTA …

The Perspectives Of The Air Line Pilots Association On Strikes Of Wildlife By Aircraft, Paul F. Eschenfelder

1999 Bird Strike Committee-USA/Canada, First Joint Annual Meeting, Vancouver, BC

Strikes of wildlife by aircraft cause thousands of life-threatening incidents, and hundreds of millions of dollars worth of damage to aircraft every year. This hazard is largely preventable, but it has not been properly addressed to date for a variety of reasons. ALPA believes that action should be taken now before a catastrophe occurs.

Collisions between aircraft and wildlife are increasing in frequency in North America due to growth in the number of migratory birds and other wildlife and the increased numbers of aircraft operations. This threat to human safety has manifested itself in several fatal strikes between aircraft and …

Zero Bird-Strike Rate - An Achievable Target, Not A Pipedream, S. M. Satheesan

1999 Bird Strike Committee-USA/Canada, First Joint Annual Meeting, Vancouver, BC

This paper explains how zero bird-strike rate can be achieved by any aerodrome by constant efforts and perseverance of a dedicated team as evidenced from the author’s experience on about 30 aerodromes in India. This paper stresses the importance of conducting survey of problem aerodromes every five years by an expert (Satheesan 1996c), necessity for employing an Ornithologist at every aerodrome, need for regular national-level training for bird-controllers (Satheesan, in press - b) and urgency for setting up Bird-strike Prevention Committees at national (interministerial) and airport levels. Bird strike rates were brought down to zero at the Trivandrum International Airport …

The Benefits And Costs Of Performing An Ecological Study At The Minneapolis-St. Paul International Airport: A Journey Of Enlightenment, John Ostrom

1999 Bird Strike Committee-USA/Canada, First Joint Annual Meeting, Vancouver, BC

MSP Ecological Study--Objectives 1. To identify any and all species of wildlife present at MSP that may pose a threat to aviation safety and to document their numbers, seasonal distribution, behavior and natural or man-made features that are attractive to wildlife on or near the airport.
2. To make recommendations for mitigation of identified wildlife attractants and management of wildlife species that may pose a threat to aviation safety.

Temporal And Spatial Patterns Of Avifauna On Wetlands In The Vicinity Of Bush Field Airport, Augusta, Georgia, Usa, Robert A. Kennamer, L. Brisbin Jr., K. F. Gaines, W. L. Stephens Jr.

1999 Bird Strike Committee-USA/Canada, First Joint Annual Meeting, Vancouver, BC

Responding to a U.S. Federal court order to improve discharged wastewater quality, Augusta, Georgia initiated development of artificial wetlands in 1997 to treat effluents. Because of the proximity to Augusta Regional Airport at Bush Field, the U.S. Federal Aviation Administration expressed concern for potential increased hazard to aircraft posed by birds attracted to these wetlands. We commenced weekly low-level aerial surveys of habitats in the area beginning January, 1998. Over a one-year period, 49 surveys identified approximately 42,000 birds representing 52 species, including protected Wood Storks and Bald Eagles, using wetlands within 8 km of the airport. More birds were …

Evolution Of The Dfw International Airport Wildlife Management Program –- Lessons Learned, Curt W. Kuehner, John R. Alexander

1999 Bird Strike Committee-USA/Canada, First Joint Annual Meeting, Vancouver, BC

On January 7, 1997, Dallas-Fort Worth International Airport experienced its first large bird strike event, involving the collision of over 350 European starlings with an American Airlines MD-80. This prompted a serious assessment of existing wildlife control procedures, and eventually resulted in the formation of the DFW Wildlife Control Program. The number of reported strikes has dropped from 157 in 1996 to 52 in 1998. The success of DFW’s program is the result of long, hard hours and extensive trial and error. However, wildlife management personnel at other airfields do not have to go through all the growing pains and …

The John Muir Newsletter, Spring 1999, The John Muir Center For Regional Studies

Muir Center Newsletters, 1981-2015

NEWSLETTER c Reconstructing John Mum's First Public Lecture, Sacramento, 1876 by Steve Pauly, Pleasant Hill, California (Editor's Note: In our previous issue, Steve Pauley's article placed John Muir's first public talk in context. Wmere is his re-creation of some sections of the talk.) n the beginning of the long glacial winter, the lofty Sierra seems to have consisted of one vast undulated wave, in which a thousand separate mountains, with their domes and spires, their innumerable canons and lake basins, lay concealed. In the development of these, the Master Builder chose for a tool, not the earthquake nor lightning to …

The Relative Importance Of Patch Area And Perimeter–Area Ratio To Grassland Breeding Birds, Christopher J. Helzer, Dennis E. Jelinski

School of Natural Resources: Faculty Publications

Habitat fragmentation has been implicated as a major cause of population decline in grassland birds. We tested the hypothesis that a combination of area and shape determines the use of grassland patches by breeding birds. We compared both species richness and individual species presence in 45 wet meadow grasslands in the floodplain of the central Platte River, Nebraska. Bird data were collected through the use of belt transects and supplemented by walking and listening outside transects. Our data supported our primary hypothesis that perimeter–area ratio, which reflects both the area and shape of a patch, is the strongest predictor of …

Procedure For Raising Trout In The Classroom As Part Of Environmental Education, Ronn Chapman

Theses Digitization Project

No abstract provided.

The Effects Of Urbanization And Human Disturbance Upon Plant Community Structure And Bird Species Richness, Diversity, And Abundance In A Natural Forested Area (Forest Park) In Portland, Oregon, Nancy Ellen Broshot

Dissertations and Theses

The effects of urbanization and continual human disturbance on the plant and avian communities of Forest Park and forested lands surrounding Portland, Oregon, were studied. I examined characteristics of plant and avian communities at 25 sites, 24 which were in Forest Park and surrounding areas and one which was in the Ancient Forest Preserve (old-growth stand) northwest of Forest Park. Data were analyzed using multiple regression, ANOV A, and Bonferonni/Dunn. Seven variables were selected representing different urbanization gradients. An additional covariable coded for the old-growth stand, allowing it to be used as a control.

Many tree variables, especially those related …

Ontogenetic Habitat Shifts Of Juvenile Bear Lake Sculpin, J. Ruzycki, Wayne A. Wurtsbaugh

Watershed Sciences Faculty Publications

Bear lake sculpin Cottus extensus exhibit ontogenetic habitat shifts during their initial year of life. Distribution and habitat switching was measured with bimonthly bottom-trawl surveys repeated throughout the summer. Patterns of daily growth increments on otoliths were used to measure the history of habitat residence, individual size at the time of the habitat switch, and habitat-specific growth rates. Laboratory experiments and known-age fish confirmed daily increment formation of otoliths. After dispersing during an initial pelagic larval stage, postlarval juveniles settled in both the warm, food-rich littoral zone and the cold, unproductive profundal zone. During summer, initial profundal-zone inhabitants underwent a …

Inventory Of The Central Mixed-Grass Prairie Ecoregion Of Kansas And Nebraska, Hillary Loring, Mike Bullerman, Kelly Kindscher

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

An inventory of potential high quality mixed-grass prairie ranches and large properties within the Central Mixed-Grass Prairie Ecoregion of Kansas and Nebraska was conducted in the spring and summer of 1999. Emphasis during the inventory was placed on identification of relatively intact landscapes. Significant ranches within those untilled landscapes were visited. An interview of the owners or managers of those properties was coupled with a survey of the vegetation. Assessments of quality were based on species composition, continuity of ground cover, observations of livestock impact, and viability of the community types present.

The objectives of this study were to:

1) …

Nightly And Seasonal Movements Of Boiga Irregularis On Guam, Mark Tobin, Robert Sugihara, Patricia Pochop, Michael Linnell

USDA Wildlife Services: Staff Publications

Brown tree snakes (Boiga irregularis, BTS), inadvertently introduced to the island of Guam shortly after World War II, have had catastrophic effects on the native fauna of this U.S. territory. We used radio-telemetry to monitor daytime refugia and nightly movements of 60 BTS (30 during each of two seasonal periods) to determine the extent of nightly, weekly, and monthly movements. Eighty-three percent of subadult daytime sightings were in trees, compared to only 49% of adult daytime sightings. Most measures of movement did not vary with seasonal period, sex, or age class. BTS moved an average of 64 m …

Outside Four Walls: Implementing Environmental Education Out-Of-Doors On School Campuses, Diane Marie Bruns

Theses Digitization Project

No abstract provided.