Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Environmental Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 43441 - 43470 of 52596

Full-Text Articles in Entire DC Network

A Mechanistic Management-Oriented Water Quality Model For Tampa Bay Final Report, Asci Corporation, James L. Martin, Pei F. Wang, Tim Wool May 1996

A Mechanistic Management-Oriented Water Quality Model For Tampa Bay Final Report, Asci Corporation, James L. Martin, Pei F. Wang, Tim Wool

Reports

This report summarizes the parameterization, calibration, testing, and an initial application of the mechanistic water quality model.


The Probe, Issue 165 – May 1996 May 1996

The Probe, Issue 165 – May 1996

The Probe: Newsletter of the National Animal Damage Control Association

The Wildlife Damage Management Professional, by Robert H. Schmidt, Department of Fisheries and Wildlife, Utah State University, Logan Utah 84322-5210
ADC "News on the Net" - Computer Talk on Animal Damage Control
Wildlife Population Control Strategy Publication Available
Book Review: "Eastern Coyote: The Story of Its Success." By Gerry Parker. Halifax, Nova Scotia: Nimbus Press 1995 251 pp. with Index and B+W photos.
Ohio Wildlife Control Association News --Mike Dwyer, President, OWCA


The Influence Of Forest Fragmentation And Landscape Pattern On American Martens And Their Prey, Christina D. Hargis May 1996

The Influence Of Forest Fragmentation And Landscape Pattern On American Martens And Their Prey, Christina D. Hargis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Habitat fragmentation occurs when large tracts of an orginal habitat are replaced by smaller patches of two or more habitat types, largely through human activities. I studied the behavior of six measures of landscape pattern that seemed appropriate for quantifying fragmentation, and used these measures to investigate the effects of forest fragmentation on American martens (Martes americana) and their prey. The measures I selected were edge density, contagion, mean nearest neighbor distance between patches, mean proximity index, perimeter-area fractal dimension, and mass fractal dimension. To test the behavior of these measures with a variety of landscape patterns, I …


Thermal Tolerances Of Platte River Fishes: Field And Laboratory Studies, Brett P. Fessell May 1996

Thermal Tolerances Of Platte River Fishes: Field And Laboratory Studies, Brett P. Fessell

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Chronic Effects Of Baseflow Levels Of Atrazine On Platte River Algae, Karen J. Nelson May 1996

Chronic Effects Of Baseflow Levels Of Atrazine On Platte River Algae, Karen J. Nelson

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Influence Of Prey Availability On Walleye (Stizostedion Vitreum), Mark T. Porath May 1996

Influence Of Prey Availability On Walleye (Stizostedion Vitreum), Mark T. Porath

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


กิจกรรมสิ่งแวดล้อม May 1996

กิจกรรมสิ่งแวดล้อม

Thai Environment

No abstract provided.


การจัดการอนุรักษ์ธรรมชาติและสิ่งแวดล้อม, ทวีวงศ์ ศรีบุรี May 1996

การจัดการอนุรักษ์ธรรมชาติและสิ่งแวดล้อม, ทวีวงศ์ ศรีบุรี

Thai Environment

No abstract provided.


น้ำเปลี่ยนสี, นรินทร์ ธารัตถพันธุ์ May 1996

น้ำเปลี่ยนสี, นรินทร์ ธารัตถพันธุ์

Thai Environment

No abstract provided.


สัมภาษณ์พิเศษ : ดร.สรณรัชฎ์ กาญจนะวณิชย์ May 1996

สัมภาษณ์พิเศษ : ดร.สรณรัชฎ์ กาญจนะวณิชย์

Thai Environment

No abstract provided.


ศัพท์น่ารู้ May 1996

ศัพท์น่ารู้

Thai Environment

No abstract provided.


พิษภัยจากอาหารในช่วงฤดูร้อน, เบญจภรณ์ รุ่งพิทักษ์ไชย May 1996

พิษภัยจากอาหารในช่วงฤดูร้อน, เบญจภรณ์ รุ่งพิทักษ์ไชย

Thai Environment

No abstract provided.


Entech '96 Show Preview May 1996

Entech '96 Show Preview

Thai Environment

No abstract provided.


A Comparative Analysis Of Viable Solar Thermal Technologies For Solar Field Development And Commercialization, Sean M. Crawford May 1996

A Comparative Analysis Of Viable Solar Thermal Technologies For Solar Field Development And Commercialization, Sean M. Crawford

UNLV Theses, Dissertations, Professional Papers, and Capstones

Diminishing fossil fuels and concerns about the quality of the environment has lead the recent drive to establish a commercialized solar field in Southern Nevada. The competing solar thermal technologies for the Solar Enterprise Zone (SEZ) are Parabolic Dish-Stirling, Central Receiver Power Towers, and Parabolic Trough Systems. It is important to compare the technologies based on the guidelines set by the Corporation for Solar Technology and Renewable Resources. The variables weighted are solar conversion performances, initial capital investment, operation and maintenance costs, water and land use, and electricity production costs. All technologies have been proven to viable power sources and …


แนะนำโครงการใหม่ : โครงการที่เกี่ยวกับการสำรวจปัญหาและการควบคุมฝุ่นละอองสำหรับกรุงเทพมหานคร May 1996

แนะนำโครงการใหม่ : โครงการที่เกี่ยวกับการสำรวจปัญหาและการควบคุมฝุ่นละอองสำหรับกรุงเทพมหานคร

Thai Environment

No abstract provided.


สรุปข่าวสิ่งแวดล้อม May 1996

สรุปข่าวสิ่งแวดล้อม

Thai Environment

No abstract provided.


ไขปัญหาสารพัน May 1996

ไขปัญหาสารพัน

Thai Environment

No abstract provided.


Second Growth Forest As Potential Marten Habitat In Western Newfoundland: An Examination Of Forest Habitat Structure And Microtine Abundance, Brian R. Sturtevant May 1996

Second Growth Forest As Potential Marten Habitat In Western Newfoundland: An Examination Of Forest Habitat Structure And Microtine Abundance, Brian R. Sturtevant

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The American marten (Martes americana) is associated with large tracts of relatively undisturbed, mature coniferous forests. I examined coarse woody debris (CWD) structure and small mammal abundance with respect to forest age and stem structure within second-growth forests, in comparison with old-growth stands in western Newfoundland. Results suggest that a critical change in marten habitat quality may occur at stand senescence, due to decreased tree competition, more complex subcanopy structure, and increased meadow vole (Microtus pennsylvanicus) abundance.

Analysis of stem structure within a chronosequence of 19 second-growth stands indicated high intertree competition, with dense canopy closure …


Spatial And Temporal Dynamics Of Plant Populations In Salt-Desert Shrub Vegetation Grazed By Sheep, Humberto Alzérreca-Angelo May 1996

Spatial And Temporal Dynamics Of Plant Populations In Salt-Desert Shrub Vegetation Grazed By Sheep, Humberto Alzérreca-Angelo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I studied the effect of moderate sheep grazing on a shadscale plant community at the Desert Experimental Range, southwestern Utah, USA, using a 61-yr data set with two grazing treatments (yes vs. no), two seasons (spring vs. winter), and two soil types (loamy-skeletal vs. coarse-loamy). I studied precipitation, total species cover, annuals, shrub survival, seedling recruitment, plant succession, and plant spatial relationships.

Precipitation showed high variability (CV=31%) masking on short-term cycles, resulting in study intervals with average (1935-58), dry (1958-69), driest (1969-75), and wet (1980-94[5]) regimes. Total cover in both grazed and ungrazed pastures increased between 1935 and 1975 before …


บทบรรณาธิการ May 1996

บทบรรณาธิการ

Thai Environment

No abstract provided.


บทสรุปโครงการปลูกป่าถาวร เฉลิมพระเกียรติทรงครองราชย์ปีที่ 50, มณฑล จำเริญพฤกษ์ May 1996

บทสรุปโครงการปลูกป่าถาวร เฉลิมพระเกียรติทรงครองราชย์ปีที่ 50, มณฑล จำเริญพฤกษ์

Thai Environment

No abstract provided.


การเกิดและดับของตลาดน้ำวัดไทร ผลพวงของการเปลี่ยนแปลงที่เกิดจากการพัฒนา, สุจิตรา ชโลดม May 1996

การเกิดและดับของตลาดน้ำวัดไทร ผลพวงของการเปลี่ยนแปลงที่เกิดจากการพัฒนา, สุจิตรา ชโลดม

Thai Environment

No abstract provided.


มัจจุราชควันบุหรี่, สิริกร เกรอต May 1996

มัจจุราชควันบุหรี่, สิริกร เกรอต

Thai Environment

No abstract provided.


องค์กรชุมชนกับการจัดการสิ่งแวดล้อม (ตอนที่ 2), ประสาน ตังสิกบุตร May 1996

องค์กรชุมชนกับการจัดการสิ่งแวดล้อม (ตอนที่ 2), ประสาน ตังสิกบุตร

Thai Environment

No abstract provided.


ข่าวประชาสัมพันธ์ May 1996

ข่าวประชาสัมพันธ์

Thai Environment

No abstract provided.


ข่าวผลิตภัณฑ์ May 1996

ข่าวผลิตภัณฑ์

Thai Environment

No abstract provided.


ประวัติผู้เขียน May 1996

ประวัติผู้เขียน

Thai Environment

No abstract provided.


What Limits Tailed Frog Tadpole Density And Distribution In Western Montana Streams?, Megan Barker May 1996

What Limits Tailed Frog Tadpole Density And Distribution In Western Montana Streams?, Megan Barker

Undergraduate Honors Capstone Projects

We explored the possible limitation of temperature and other habitat features on tailed frog tadpole populations in northwestern Montana. We sampled densities and habitat features in two regions with different climatic regimes and in streams with and without tadpoles, expecting larger density and size in the warmer region. We also expected habitat conditons to be more optimal (higher gradient, swifter velocity, and less canopy cover) in streams with tadpoles. Temperature appeared to positively influence tadpole size, though both tadpole size and density were strongly correlated with other variables. Density was correlated with gradient, canopy, depth, and elevation, whereas length was …


Habitat Selection And Movement Of A Stream-Resident Salmonid In A Regulated River And Tests Of Four Bioenergetic Optimization Models, Mark D. Bowen May 1996

Habitat Selection And Movement Of A Stream-Resident Salmonid In A Regulated River And Tests Of Four Bioenergetic Optimization Models, Mark D. Bowen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A bioenergetics model was constructed for stream-resident drift-feeding salmonids. Model predictions of surplus power (energy available per unit time for growth and reproduction) were not statistically distinguishable from observations of surplus power in three laboratory studies. Of 40 experimental trials in these three studies, the model correctly predicted surplus power in 39 cases (p < 0.05).

I collected observations of rainbow trout (Oncorhynchus mykiss) focal velocity and physical habitat availability in the Green River of northeastern Utah, USA (1988-1990). In the winter of 1988, Flaming Gorge Dam generated hydropower and delivered an lJDStable discharge regime with a higher mean discharge …


Mule Deer Highway Mortality In Northeastern Utah: An Analysis Of Population-Level Impacts And A New Mitigative System, Mark E. Lehnert May 1996

Mule Deer Highway Mortality In Northeastern Utah: An Analysis Of Population-Level Impacts And A New Mitigative System, Mark E. Lehnert

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rerouting highways to accommodate construction of the Jordanelle Reservoir in northeastern Utah caused a dramatic increase in vehicle collisions with mule deer (Odocoileus hemionus). I evaluated the effectiveness of a new system of highway crosswalk structures installed to reduce deer losses and preserve seasonal migrations. In addition, I constructed computer simulation models to investigate how highway mortality has impacted the Jordanelle deer population.

The crosswalk system restricted deer crossings to specific, well-marked areas along highways where motorists could anticipate them. Subsequent to installation, mortality declined 42.3% and 36.8% along a four-lane and two-lane highway, respectively. I was unable …