Digital Commons Network^™

Watershed Management To Control Pollution In The Ayuquila River, Jalisco, Mexico, Luis Manuel Martinez Rivera

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Ayuquila River watershed is important to western Mexico because of its biodiversity, physiography, fisheries resources, and water production. However, human activities are continuingly affecting natural resources within the basin. Soil erosion, as result of land use change, agriculture in steep land, extensive grazing activities and forest fires; and water diversion and pollution of the Ayuquila River are two relevant issues that have affected the natural resources of this watershed.

This river system plays an important role in wildlife conservation, containing 29 fish species, of which 12 are found inside the BRSM. The River also contains nine species of crustacean, …

Field Guide: Diseases And Parasites Of Marine Mammals Of The Eastern Arctic, Kara L. Vlasman, G. Douglas Campbell

Canadian Cooperative Wildlife Health Centre: Newsletters and Publications

The purpose of this guide is to provide information on the diseases, parasites, and abnormalities that may occur in marine mammals of the eastern Canadian Arctic. It also provides instructions on collection and submission of samples from animals that appear diseased or abnormal to laboratories for examination and testing.

Scwds Briefs: Volume 20, Number 1 (April 2004)

Southeastern Cooperative Wildlife Disease Study: Publications

• First Culture of the STARI Agent for Lyme disease, caused by Borrelia burgdorferi sensulato, the most common tick-borne disease of humans worldwide and the most frequently reported vector-borne disease in the United States.
• Unusual wild elk mortality that began in late January to early February 2004 in the Red Rim area southwest of Rawlings, Wyoming, has been preliminarily diagnosed as lichen (Xanthoparmelia chlorochroa) toxicosis.
• During 2003, hemorrhagic disease (HD) was documented in seven states through virus isolation at SCWDS. Most of our isolations were associated with an outbreak in western Idaho and adjoining eastern Washington. Both epizootic …

Factors Influencing Seagrass Recovery In Feather Sound, Tampa Bay, Florida, Feather Sound Seagrass Recovery Workgroup

Reports

This document is a summary of the findings and recommendations of the Feather Sound Seagrass Recovery Workgroup.

In response to nutrient load reductions and resulting clearer water, seagrasses have expanded significantly in many areas of Tampa Bay since the mid-1980s. However, the recovery rate and expansion of seagrasses in several areas, especially in the Feather Sound region of Old Tampa Bay, have been much slower. This project was designed to examine factors that may be affecting seagrass recovery and growth in the Feather Sound region compared to three other areas of Old Tampa Bay.

Management Of Vegetation To Reduce Wildlife Hazards At Airports, Brian E. Washburn, Thomas W. Seamans

United States Department of Agriculture Wildlife Services: Staff Publications

Wildlife-aircraft collisions (wildlife strikes) pose a serious safety risk to aircraft. Wildlife strikes cost civil and military aviation at least S490 million annually in the United States (Cleary et al. [I]). Over 46,500 wildlife strikes with civil aircraft were reported to the U.S. Federal Aviation Administration (FAA) during 1990-2002 (Cleary et al. 111). Aircraft collisions with birds accounted for 97% of the reported strikes, whereas strikes with mammals and reptiles were 3% and Larus spp.), waterfowl such as Canada geese (Branta canadensis), raptors (hawks and owls), and blackbirds (Ictennae)/starlings (Sturnus vulgaris) are the species presently of …

A Comparison Of Anuran Species Richness Between Primary And Secondary Forest In São Francisco Do Pará, Michael Reichert

Independent Study Project (ISP) Collection

Deforestation in the Amazon has become a serious conservation issue. The process of destruction of primary forest results in the creation of secondary forest that differs from primary forest in a number of important ways. Anurans (frogs and toads) are one group that may be affected by the loss of primary forest and creation of secondary forest areas, and are an important focus for conservation efforts. Previous studies on anuran reactions to loss of primary forest have been few and inconclusive. This study examined anuran species richness in an area of primary and secondary forest in order to determine whether …

Regulatory Motif Finding By Logic Regression, Sunduz Keles, Mark J. Van Der Laan, Chris Vulpe

U.C. Berkeley Division of Biostatistics Working Paper Series

Multiple transcription factors coordinately control transcriptional regulation of genes in eukaryotes. Although multiple computational methods consider the identification of individual transcription factor binding sites (TFBSs), very few focus on the interactions between these sites. We consider finding transcription factor binding sites and their context specific interactions using microarray gene expression data. We devise a hybrid approach called LogicMotif composed of a TFBS identification method combined with the new regression methodology logic regression of Ruczinski et al. (2003). LogicMotif has two steps: First potential binding sites are identified from transcription control regions of genes of interest. Various available methods can be …

Rocky Mountain Wolf Recovery 2004 Annual Report

Rocky Mountain Wolf Recovery: Annual Reports

The gray wolf (Canis lupus) population in the Northern Rocky Mountain (NRM) states (Idaho, Montana, and Wyoming) continued to increase in distribution and numbers (Figure 1, Tables 4a, 4b). Estimates of wolf numbers at the end of 2004 were 452 wolves in the Central Idaho Recovery Area (CID), 324 in the Greater Yellowstone Recovery Area (GYA), and 59 in the Northwest Montana Recovery Area (NWMT) for a total of 835 wolves (Figure 1, Table 4a). By state boundaries, there were an estimated 422 wolves in the state of Idaho, 260 in Wyoming and 153 in Montana (Table 4b). …

Coyote Attacks: An Increasing Suburban Problem, Robert M. Timm, Rex O. Baker, Joe R. Bennett, Craig C. Coolahan

Vertebrate Pest Conference Proceedings: 21st (2004)

Coyote attacks on humans and pets have increased within the past 5 years in California. We discuss documented occurrences of coyote aggression and attacks on people, using data from USDA Wildlife Services, the California Department of Fish & Game, and other sources. Forty-eight such attacks on children and adults were verified from 1998 through 2003, compared to 41 attacks during the period 1988 through 1997; most incidents occurred in Southern California near the suburban-wildland interface. Attack incidents are typically preceded by a sequence of increasingly bold coyote behaviors, including: nighttime coyote attacks on pets; sightings of coyotes in neighborhoods at …

Inside Unlv, Katrina Hudak, Carol C. Harter, James Frey

Inside UNLV

No abstract provided.

Inside Unlv, Gian Galassi, Carol C. Harter, Kenneth E. Marks

Inside UNLV

No abstract provided.

Coyotes In Yellowstone National Park: The Influence Of Dominance On Foraging, Territoriality, And Fitness, Eric M. Gese

United States Department of Agriculture Wildlife Services: Staff Publications

The coyote, is an opportunistic, generalist predator that has expanded its distribution to most of North America and is probably one of the most widely researched canids. Yet, its typically nocturnal, secretive behavior mean there have been only two studies-both in Grand Teton National Park, Wyoming-based on direct observation of wild coyotes (Camenzind 1978b; Bekoff and Wells 1986). The coyote population in YNP has not been persecuted for several decades, and thus is tolerant of humans to an extent that has facilitated our studies of how coyotes deal with fluctuations in temperature, snow depth, snow-pack hardness, and food availability (e.g. …

Crop Updates 2004 - Cereals, Wal Anderson, Vivian Vanstone, Rob Loughman, Vanessa Stewart, Darshan Sharma, Christine M. Zaicou-Kunesch, Brenda Shackley, Mohammad Amjad, Steve Penny Jr, Glen Riethmuller, Jeremy Lemon, Mario D'Antuono, Veronika Reck, Ben Curtis, Judith Devenish, Melaine Kupsch, Anne Smith, Blakely Paynter, Roslyn J. Jettner, Leanne Schulz, Jocelyn Ball, Tom Sweeny, Stephen Loss, Ashleigh Brooks, Justin Fuery, Geoff Anderson, Zed Rengel, Paul Damon, Eddy Pol, Narelle Hill, Ray Tugwell, Ron Mctaggart, Nathan Moyes, John Majewski, Manisha Shankar, James Piotrowski, Ciara Beard, Kithsiri Jayasena, Kazue Tanaka, Grey Poulish, Debbie Thackray, Rohan Prince, Roger Jones, Peter Nelson, Nigel Metz, Leisa Armstrong, Yee Leong (Alex) Yung, Moin U. Salam, David Tennant

Crop Updates

This session covers twenty eight papers from different authors:

PLENARY

1. Declining profitability in continuous cropping systems. Is more wheat the answer on Duplex soil? Dr Wal Anderson, Department of Agriculture

2. Disease implications of extending the wheat phase in low-medium rainfall areas, Dr Vivian Vanstone and Dr Robert Loughman, Department of Agriculture

3. Prolonged wheat phase on duplex soils – where do weeds set the boundary? Vanessa Stewart, Department of Agriculture

WHEAT AGRONOMY

4. Management of small grain screenings in wheat, Dr Wal Anderson and Dr Darshan Sharma, Department of Agriculture

5. Agronomic responses of new wheat varieties, Christine …

Effects Of Forage Nutritional Quality (Energy And Protein) On Deer Acceptance Of Foods Containing Secondary Metabolites, Dale L. Nolte, Bruce A. Kimball, Kelly R. Perry, Juan J. Villalba, Frederick D. Provenza

United States Department of Agriculture Wildlife Services: Staff Publications

Deer foraging on tree seedlings is recognized as the most widespread detriment to reforestation efforts. Non-lethal approaches to reduce deer damage to seedlings are highly desirable. Avoidance of natural secondary metabolites contained in conifers may provide feasible means to develop non-lethal measures. Other studies have demonstrated that sheep and goats fed diets with high protein-to-energy ratios, or allowed to select between concentrates high in either energy or protein, ate much more of a high-terpene diet and of a high-tannin diet than when they were fed diets high in energy-to-protein ratios. Thus, manipulating foraging options for deer may impact their ability …

Projecting Range Expansion Of Invasive European Green Crabs (Carcinus Maenas) To Alaska: Temperature And Salinity Tolerance Of Larvae, Anson Hines, Greg Ruiz, Natasha Gray Hitchcock, Catherine E. De Rivera

Environmental Science and Management Faculty Publications and Presentations

The European Green Crab (Carcinus maenas) is a global invader, successfully colonizing many world regions and having significant ecological and economic impacts. The Green Crab colonized western North America in the late 1980s, spreading primarily northward from the initial establishment in San Francisco Bay to several other bays in northern California, Oregon, and Washington. Initial analysis, based largely upon temperature tolerance of postlarval crabs, suggests Green Crabs will continue to spread and become established throughout much of Alaska. However, establishment of self-sustaining populations in Alaska may be restricted by environmental conditions for reproduction and larval development, instead of the broad …

Snake River Birds Of Prey National Conservation Area Case Study, Kathryn M. Mutz, Doug Cannon, Chris Simmons, University Of Colorado Boulder. Natural Resources Law Center

Books, Reports, and Studies

34, A-5, B-2 p. : ill., map

Using Symbolic Knowledge In The Umls To Disambiguate Words In Small Datasets With A Naive Bayes Classifier, Gondy Leroy, Thomas C. Rindflesch

CGU Faculty Publications and Research

Current approaches to word sense disambiguation use and combine various machine-learning techniques. Most refer to characteristics of the ambiguous word and surrounding words and are based on hundreds of examples. Unfortunately, developing large training sets is time-consuming. We investigate the use of symbolic knowledge to augment machine-learning techniques for small datasets. UMLS semantic types assigned to concepts found in the sentence and relationships between these semantic types form the knowledge base. A naïve Bayes classifier was trained for 15 words with 100 examples for each. The most frequent sense of a word served as the baseline. The effect of increasingly …

Soil Survey Of Vasse Research Station, Western Australia, M R. Wells, N L B Richards

Resource management technical reports

This soil survey of the Vasse Research Station properties was carried out at the request of the Division of Plant Production of the Agriculture Western Australia. The survey followed a preliminary examination and mapping of soil series in the area by Mr T. Stoneman in 1982, after which it was concluded that more detailed survey work was required to assist farm management and research experimentation.

The research station consists of two blocks, referred to here as the main block (Sussex Locations 1475, 1439, 2128, 2138, 2137, 2136, 2129, 2130, 2119, 2118, 2126 and 2125) and the hill block (Sussex Locations …

116th Annual Meeting Of The Iowa Academy Of Science [Program, 2004], Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Notes Page --- 3
Friday Program Summary --- 4
Senior Academy Poster Presentation Titles --- 5
General Session Speakers --- 7
Symposia Programs --- 8
Saturday Program Summary --- 9
Section Meeting Programs (Alphabetical by Section) --- 9
2004 Awards --- 14
Abstracts (by Section) --- 15
Author Index --- 42

Mudfish On The Menu? Rise Of The Much-Maligned Bowfin, Ken Sulak

United States Geological Survey: Staff Publications

Cajuns call it “choupique” (say “shoe-pick”), from its Choctaw name. Elsewhere, it’s the dogfish, blackfish, grindle, cottonfish, or cypress trout. Its official common name is “Bowfin” (Amia calva)1. But to most anglers, this is the “mudfish,” a strange, unusual, and much-maligned fish, most everywhere considered a useless trash fish. One look and the words relict, prehistoric, primitive, and living fossil come to mind. Indeed, the bowfin is the last of its line, the sole-surviving species of a very ancient group of fishes. Its predecessors flourished in the Jurassic and Cretaceous periods during the Mesozoic (= Middle-Animal) Era, a …

Diel Activity Patterns, Space Utilization, Seasonal Distribution And Population Structure Of The Yellow Stingray, Urobatis Jamaicensis (Cuvier, 1817) In South Florida With Comments On Reproduction., Daniel P. Fahy

HCNSO Student Theses and Dissertations

The yellow stingray, Urobatis jamaicensis is the most common elasmobranch in the coastal waters of Southeast Florida. Despite their common occurrence the ecology of yellow stingrays remains poorly understood. In particular, yellow stingray daily movements, space utilization, seasonal distribution and population structure have not been described. This study was conducted to address the lack of knowledge of these fundamental life history parameters and to provide further information on the ecology of U. jamaicensis in coastal waters of Broward County, Florida.

The activity patterns and space utilization of U. jamaicensis were assessed by manual tracking with ultrasonic telemetry. Telemetry tracking of …

Part I: Evaluation Of Russian Synthetic Compounds As A Potential Source Of New Drug Leads Agains Breast And Colon Cancer Part Ii: Isolation Of Beta-Amyrin Formate From Eucalyptus Viminalis Labill And Investigation Of Its Colon Cancer Activity, Mihaela Cohanoschi

Electronic Theses and Dissertations

Although modern medicine made great steps toward curing most diseases considered deadliest, yet cancer remains one of the major public health problems. The first part of this thesis investigates a new source of selective compounds that are potential candidates against cancer. Fifteen Russian compounds were tested in order to establish their efficiency against two types of cancer: human breast SK-Br-3 and colorectal carcinoma HT-29. The bioassay results show that seven of the new synthetic Russian compounds can be considered new drug leads, based upon their low toxicity and efficacy in slowing the growth of human breast cancer and colon cancer …

Human Rights, Health And The Environment, David Gillespie

Human Rights & Human Welfare

Environmental health and human rights are inextricably linked. According to the Universal Declaration of Human Rights, Article 3, “Everyone has the right to life, liberty, and security of person.” Given that the earth is the source of the basic necessities of human life, any discussion about health and human rights must be attentive to its inherent environmental aspects. International conventions, documents and reports such as Agenda 21 (1992) and The Draft Declaration of Human Rights and the Environment (1994) have expressly argued for such an integrated approach. In response, a plethora of works over the past decade have expanded the …

The Probe, Issue 231 – January/February 2004

The Probe: Newsletter of the National Animal Damage Control Association

• There was no November/December 2003 issue of The Probe
• Call for Papers: Second National Rodent Summit
• A new book called Mule Deer Conservation: Issues and Management Strategies has just been published by the Western Association of Fish and Wildlife Agencies and the Jack Berryman Institute.
• Is what we normally think of as "the world's oldest profession" really the oldest profession?
• Human-Wildlife Conflicts in India -- Jason D. Robinson
• Consumption of Non-Human Primates Poses Health Risks
• Position Available: Extension Coordinator--Wildlife Damage Management; School of Natural Resources,University of Nebraska-Lincoln
• Report Available on Whitetail Management …

Factors Influencing A Declining Pronghorn Population In Wind Cave National Park, South Dakota, Jaret D. Sievers

Electronic Theses and Dissertations

Pronghorn (Antilocapra americana) were reintroduced into Wind Cave National Park (WCNP) in 1914 and thus, have inhabited the park for almost a century. A decline in the population has raised concern for the continued existence of pronghorn inside the park. Historically, pronghorn numbers reached greater than 300 individuals but were estimated to be less than 50 individuals during this study. Knowledge of food habits, genetic structure, causes of mortality, survival rates, and information related to movements were important to developing an understanding of factors contributing to this decline. Past studies have described spatial relationships and breeding behavior of adults and …

Effects Of Fire On The Nutritional Ecology Of Selected Ungulates In The Southern Black Hills, South Dakota, Teresa J. Zimmerman

Electronic Theses and Dissertations

Research in the 1990s indicated that populations of white-tailed deer (Odocoileus virginianus) in the northern and central Black Hills had declined since the late 1970s likely due to habitat deterioration. In August 2000, the Jasper fire consumed nearly 35,000 ha of ponderosa pine (Pinus ponderosa) forest in the southern Black Hills. To ascertain the nutritional condition of white-tailed deer and mule deer (O. hemionus) and their response to fire, 5 adult white-tailed deer and 5 adult mule deer were collected in burned and unburned habitat, in February and August, 2002 and 2003. Collected deer were weighed and necropsied at a …

(Under)Mining The Seabed? Between The International Seabed Authority Mining Code And Sustainable Bioprospecting Of Hydrothermal Vent Ecosystems In The Seabed Area: Taking Precaution Seriously, Ikechi Mgbeoji

Articles & Book Chapters

Rapid developments in marine biotechnology and the prospect of sea-bed mining have exposed the inadequacy of legal frameworks to regulation the exploration exploitation, and sharing of the benefits that arise from such marine endeavors. The fact of the matter is that despite the giant strides made in and the huge financial stakes involved in bioprospecting of hydro-thermal vent ecosystems, legal issues raised by profitable biotechnology development through marine scientific research (MSR) are still at an infant and underdeveloped stage. This article evaluates the extent to which the present legal order for the mining of seabed polymetallic nodules with its tangential …

Water Current, Volume 36, No. 1. Winter 2004

Water Current Newsletter

Contents

• UNL Water Law, Policy and Science Conference is Mar. 4-5 by Steve Ress

• Summer Tour is June 7-9

• From the Director

• Bringing a Community Lake Back to Life

• UNL Water and Natural Resources Lectures

• Fact Sheets Explore Water Transfer and Marketing, Management of Dakota Aquifer

• Water Levels Continue Decline in High Plains Aquifer by Steve Ross

• Tracking Elk to Determine Best Herd Size for Nebraska’s Pine Ridge by Steve Ress

• Water News Briefs

• Lower Levels at Lake McConaughy Reveal Shoreline Erosion by Steve Ress and Charles Flowerday

Relationships Between Needle Nitrogen Concentration And Photosynthetic Responses Of Douglas-Fir Seedlings To Elevated Co2 And Temperature, James D. Lewis, Melissa S. Lucash, David M. Olszyk, David T. Tingey

Environmental Science and Management Faculty Publications and Presentations

• Here we examined correlations between needle nitrogen concentration ([N]) and photosynthetic responses of Douglas-fir (Pseudotsuga menziesii) seedlings to growth in elevated temperatures and atmospheric carbon dioxide concentrations ([CO₂]).
• Seedlings were grown in sunlit, climate-controlled chambers at ambient or ambient+3.5^° C and ambient or ambient +180 μmol mol^-1 CO₂ in a full factorial design. Photosynthetic parameters and needle [N] were measured six times over a 21-month period.
• Needle [N] varied seasonally, and accounted for 30–50% of the variation in photosynthetic parameters. Across measurement periods, elevated temperature increased needle [N] by 26% and light-saturated …

Method Analysis Of Laboratory Measures Of Stream Sediment And Water Phosphorus Equilibrium, Anna L. Erickson, Stephanie M. Williamson, Brian E. Haggard

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Elevated phosphorus concentrations in aquatic ecosystems of northwest Arkansas prompted an investigation of the effects of sample preparation and extraction methods on laboratory measures of sediment-phosphorus interactions. Two streams of contrasting phosphorus (P) concentrations were selected to determine the effect of using a CaCl2 solution instead of filtered stream water, refrigerated or dried sediments instead of fresh wet sediments, and vortexing the suspensions instead of shaking them. Sediment equilibrium P concentration (EPC0) and P buffering capacity (K) were used to determine differences in extraction methods. EPC0 and K from extractions using fresh sediments and a CaCl2 solution matching the electrical …