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Bird Use Of Riparian Vegetation Along The Truckee River, Califonia And Nevada, Suellen Lynn, Michael L. Morrison, Amy J. Kuenzi, Jennifer C. C. Neale, Benjamin N. Sacks, Robin Hamlin, Linnea S. Hall Oct 1998

Bird Use Of Riparian Vegetation Along The Truckee River, Califonia And Nevada, Suellen Lynn, Michael L. Morrison, Amy J. Kuenzi, Jennifer C. C. Neale, Benjamin N. Sacks, Robin Hamlin, Linnea S. Hall

Great Basin Naturalist

The Truckee River in California and Nevada is subject to diverse water regimes and a corresponding variety of flow rates. Original riparian vegetation has been altered by these variable flow rates and by a variety of human uses resulting in loss of native riparian vegetation from its historic extent. We conducted bird surveys along the Truckee River during spring 1993 to (1) determine relationships between birds and the present vegetation; (2) determine the importance of different vegetation types to sensitive bird species that have declined recently in the western United States due to competition from exotic plant species, cowbird ( …


Gap Analysis Of The Vegetation Of The Intermountain Semi-Desert Ecoregion, David M. Stoms, Frank W. Davis, Kenneth L. Driese, Kelly M. Cassidy, Michael P. Murray Jul 1998

Gap Analysis Of The Vegetation Of The Intermountain Semi-Desert Ecoregion, David M. Stoms, Frank W. Davis, Kenneth L. Driese, Kelly M. Cassidy, Michael P. Murray

Great Basin Naturalist

A conservation gap analysis was conducted for the Intermountain Semi-Desert ecoregion to assess the representation of land-cover types within areas managed primarily for biodiversity objectives. Mapped distributions of plant communities were summarized by land-management status categories. The total amount of land permanently protected in the ecoregion is


Winter Macroinvertebrate Communities In Two Montane Wyoming Streams, Christopher M. Pennuto, Frank Denoyelles Jr., Mark A. Conrad, Frank A. Vertucci, Sharon L. Dewey Jul 1998

Winter Macroinvertebrate Communities In Two Montane Wyoming Streams, Christopher M. Pennuto, Frank Denoyelles Jr., Mark A. Conrad, Frank A. Vertucci, Sharon L. Dewey

Great Basin Naturalist

Macroinvertebrate communities were examined on 4 winter dates over a 4-yr period in 2 high-altitude Rocky Mountain streams to document overwintering assemblages potentially experiencing spring acid pulses. Taxa richness values were comparable to other published lists for alpine and montane stream systems despite the fact that most literature reflected summer collections. Mean benthic density ranged from 1406 to 19,734 organisms/m2, and drift rates ranged from 0 to 1740 organisms/100 m3. Benthic collections showed higher taxa richness than drift collections while the Ephemeroptera and Plecoptera occurred in greater proportions in drift than in benthos. The Nemouridae (Plecoptera), …


Randomly Amplified Polymorphic Dna Analysis (Rapd) Of Artemisia Subgenus Tridentatae Species And Hybrids, E. Durant Mcarthur, Joann Mudge, Renée Van Buren, W. Ralph Andersen, Stewart C. Sanderson, David G. Babbel Jan 1998

Randomly Amplified Polymorphic Dna Analysis (Rapd) Of Artemisia Subgenus Tridentatae Species And Hybrids, E. Durant Mcarthur, Joann Mudge, Renée Van Buren, W. Ralph Andersen, Stewart C. Sanderson, David G. Babbel

Great Basin Naturalist

Species of Artemisia (subgenus Tridentatae) dominate much of western North America. The genetic variation that allows this broad ecological adaptation is facilitated by hybridization and polyploidization. Three separate studies were performed in this group using randomly amplified polymorphic DNA (RAPD). Fifty-seven 10-mer primers generated nearly 400 markers from genomic DNA obtained from leaf tissue. These studies were (1) a measure of the variability of plants within and between populations and between subspecies using 5 A. tridentata ssp. wyomingensis populations, 2 A. cana ssp. cana populations, and 1 A. cana ssp. viscidula population; (2) an examination of the hypothesis that …


Technological Processing Of The Tomato (Lycopersicum Esculentum) And The Project Of Industrial Viability, Luis Alberto Rico Aranibar Jan 1998

Technological Processing Of The Tomato (Lycopersicum Esculentum) And The Project Of Industrial Viability, Luis Alberto Rico Aranibar

Theses and Dissertations

Technological Processing of the Tomato (Lycopersicum esculentum) and the Project of Industrial Viability by Luis Alberto Rico Arabinar. The present investigation was carried out to determine the aptitude of two varieties of tomatoes in the process of manufacturing concentrations, as well as quantify its loses and performance and evaluate the acceptance and the quality of the product through organoleptic and microbiological analysis. This consists of two parts: First- The laboratory investigation consisted in the elaboration of tomato concentrations. This was done with two varieties, Rio Fuego and Santa Clara, three soluble solid concentrations (10, 20, and 30º brix), and two …


The Study Of Alfalfa (Medicago Sativa) Production In The Community Of El Troje, Juan Leopoldo Penafiel Alvarado Jan 1998

The Study Of Alfalfa (Medicago Sativa) Production In The Community Of El Troje, Juan Leopoldo Penafiel Alvarado

Theses and Dissertations

The alfalfa harvest in Ecuador constitutes one of the most important activities, especially as a primary product for animal feeding. The crop is widely distributed in the mountain region of the country. It is important to have studies on the production systems, which facilitate a real and compete vision of those characteristics that interact among them in the agricultural production. With this knowledge it will be possible to look for the most adequate solutions to the conditions of the area where alfalfa is produced. The objectives of the study reported herein were: 1. To make an agricultural, social and economical …


Development And Biological Assessment Of Fortified Foods With Andean Tubercles In The Candelaria Area, María Lourdes Ovando Sejas Jan 1998

Development And Biological Assessment Of Fortified Foods With Andean Tubercles In The Candelaria Area, María Lourdes Ovando Sejas

Theses and Dissertations

Development and Biological Assessment of Fortified Foods with Andean Tubercles and other products in the Candelaria Area. An alimentation survey was carried out in the Rodeo Alto-Candelaria zone, a producing region of tubercle andinos, and a list was made of available products and other products which are a part of the local diet. With the list as the basis, 12 mixes were formed, combining tubercle (potato, goose, papalisa), cereals (quinoa, corn, and wheat) and legumes (tarhui, bean, and peanut). These mixes were submitted to a chemical and biological analysis, which indicated an increase in weight, PER, digestibility of the protein …