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Full-Text Articles in Life Sciences

Restoring Lake Urmia: Moving Beyond A Uniform Lake Level (2-Page Summary), Somayeh Sima, Dory Rosenberg, Wayne A. Wurtsbaugh, Sarah E. Null, Karin M. Kettenring Jul 2020

Restoring Lake Urmia: Moving Beyond A Uniform Lake Level (2-Page Summary), Somayeh Sima, Dory Rosenberg, Wayne A. Wurtsbaugh, Sarah E. Null, Karin M. Kettenring

Watershed Sciences Faculty Publications

More than 5 million people live near Lake Urmia in northwestern Iran, one of the world's largest hypersaline lakes. Over the past two decades, the lake has lost 95% of its volume, lake level has dropped more than 7 m, and lake restoration has gained widespread interest. The government seeks a uniform "ecological" target lake level of 1274.1 m above sea level to lower salinity below 240 gL-1 and recover brine shrimp (Artemia spp.) and flamingos (Phoenicopterus roseus).

We have synthesized over 40 years of available data, defined 8 ecosystem services for human health, water quality, ecology, recreation, and …


Impacts Of Water Development On Great Salt Lake And The Wasatch Front, Wayne A. Wurtsbaugh, Craig Miller, Sarah E. Null, Peter Wilcock, Maura Hahnenberger, Frank Howe Feb 2016

Impacts Of Water Development On Great Salt Lake And The Wasatch Front, Wayne A. Wurtsbaugh, Craig Miller, Sarah E. Null, Peter Wilcock, Maura Hahnenberger, Frank Howe

Watershed Sciences Faculty Publications

Although droughts and floods produce short‐term fluctuations in the elevation of Great Salt Lake, water diversions since the arrival of 19th Century pioneers represent a persistent reduction in water supply to the lake, decreasing its elevation by 11 feet and exposing much of the lake bed. As Utah moves forward, we need to be aware of the impacts of lowered lake levels and make decisions that serve the interests of all Utahns. In particular, proposals to further develop the water supply of the Great Salt Lake should carefully consider potential impacts to the health of the lake and examine the …


Recent Advances In Recreation Ecology And The Implications Of Different Relationships Between Recreation Use And Ecological Impacts, Christopher Monz, C. M. Pickering, W. Hadwen Jan 2013

Recent Advances In Recreation Ecology And The Implications Of Different Relationships Between Recreation Use And Ecological Impacts, Christopher Monz, C. M. Pickering, W. Hadwen

Christopher Monz

No abstract provided.


Recreation, Livestock Grazing, And Protected Resource Values In The Grand Staircase-Escalante National Monument, Lael Palmer May 2001

Recreation, Livestock Grazing, And Protected Resource Values In The Grand Staircase-Escalante National Monument, Lael Palmer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis reports the results of a project which identified differences in characteristics of Grand Staircase-Escalante National Monument user groups as they related to their perceptions of how they experience the Monument as recreationists. It explored opinions of four groups: hikers vs. hunters and pre-designation users vs. post-designation users. Responses of these groups were compared for attribution of perceived resource damage, feelings of crowding, acceptability of management action, and importance of identified monument values to their visit. In addition, characteristics of the users were examined to determine if demographic characteristics accounted for differences in perception toward the resources. Finally, how …


The Effects Of Recreation Specialization And Motivations On The Environmental Setting Preferences Of Backcountry Hikers, Randy J. Virden May 1986

The Effects Of Recreation Specialization And Motivations On The Environmental Setting Preferences Of Backcountry Hikers, Randy J. Virden

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study explored how recreation specialization and different types of motivations were related to environmental settings preferred by backcountry hikers. A questionnaire was developed that measured the level of hiking specialization, desired psychological outcomes, and preferred environmental setting attributes. Questionnaires were mailed to 619 backcountry hikers from three Intermountain West hiking areas; a response rate of 68 percent was attained.

Results of the study revealed significant associations between the level of hiking specialization and the psychological states desired by backcountry hikers. In general, increased hiking specialization served to increase the importance of specific psychological outcomes such as autonomy, exercise, achievement …


Consumer Surplus And Economic Rent Estimates Of Recreation Value: An Empirical And Theoretical Comparison, Eric R. Meale May 1974

Consumer Surplus And Economic Rent Estimates Of Recreation Value: An Empirical And Theoretical Comparison, Eric R. Meale

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The consumer surplus and economic rent methods of resource valuation were applied to boating recreation in Utah. Total consumer surplus and economic rent values were estimated for twenty-four boating sites. These values incorporate the relationship existing between the variable use cost and the units of activity associated with the site.

Data were collected by a mail survey directed to boaters during the 1973 boating season. Approximately 1,408 questionnaires were analyzed. Additional data were collected from the Utah Division of Parks and Recreation.

Economic rent and consumer surplus were compared by using a common mathematical model and empirical observation. The concepts …


Existing And Potential Outdoor Recreation Resources In Bear Lake Valley, Utah And Idaho, Dennis H. Black May 1965

Existing And Potential Outdoor Recreation Resources In Bear Lake Valley, Utah And Idaho, Dennis H. Black

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Providing adequate outdoor recreational opportunities to the public is now a national problem. Of the many influences affecting the demand for recreation, increased income, population increase, sociological changes, and rapidly increasing technological developments are the more important. In the face of these factors, we must plan better to insure sufficient future needs. This will require evaluation and development of many recreation opportunities.

The Bear Lake are of northeastern Utah and southeastern Idaho is situated along U.S. 89 and within close driving distance of much of Utah's population. Up to the present there has been little orderly or planned development of …


A Study Of The Craft Activities In Summer Recreation Programs In Relationship To Weber County, Utah, Leonard W. Glismann May 1952

A Study Of The Craft Activities In Summer Recreation Programs In Relationship To Weber County, Utah, Leonard W. Glismann

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A quick observation in this modern world makes one realize the great problem of leisure time that is upon us. Man is working fewer hours and retirements are at a younger age. Now man finds himself poorly prepared to cope with the situation. In our schools today millions of dollars are spent teaching art, crafts, dramatics, music, and physical education in an attempt to train for leisure, yet we spend a comparatively little amount of money for continuing these activities in out-of-school hours.