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Articles 1051 - 1080 of 1094
Full-Text Articles in Life Sciences
Maine's Whitewater Rapids And Their Relevance To The Critical Areas Program, Janet Mcmahon
Maine's Whitewater Rapids And Their Relevance To The Critical Areas Program, Janet Mcmahon
Maine Collection
Maine's Whitewater Rapids and Their Relevance to the Critical Areas Program
by Janet McMahon
Planning Report No. 74, Critical Areas Program, 184 State St., Augusta, Maine,
April, 1981 (additions made in October, 1981). Reprinted July, 1983.
Contents: Introduction / Natural History of Whitewater Rapids / Methods / Criteria / Results / Conclusions / General Evaluation of Whitewater Rapids for Inclusion on the Register of Critical Areas / Bibliography / Action Plan
Report No 41 - A Survey Method For Identifying Roadside Flora Suitable For Conservation In Western Australia, John K. Scott
Report No 41 - A Survey Method For Identifying Roadside Flora Suitable For Conservation In Western Australia, John K. Scott
Fisheries Research Reports
A survey method for identifying flora suitable for conservation alongside roads in south-western Australia was derived from an examination of characteristics of road verges. Two roads, from Midland to Toodyay and from Armadale to Bunbury, were examined. Width of verge, weed cover, soil disturbance, vegetation structure, presence of public utilities, evidence of fire and the type of adjoining land were measured at one mile (1.6 km) intervals on both sides of the road. Also recorded were aesthetic qualities such as stands of beautiful trees and sites of special interest, e.g. the presence of rare plants.
Three variables, percentage weed cover, …
Breeding And Use Of Nonhuman Primates In The Usa, Joe R. Held
Breeding And Use Of Nonhuman Primates In The Usa, Joe R. Held
Experimentation Collection
Several species of nonhuman primates, each possessing specific characteristics of particular value, are used by the United States biomedical community in a wide variety of health-related activities. These animals are man's closest relatives and are indispensable in the effort to understand and control human health problems.
The destruction of primate habitats and embargoes on export of primates from source countries have decreased the supply of these animals. Continuation of many ongoing and new activities contributing to the improvement of human health is threatened by inadequate and erratic supply of these resources. In the U.S., a program has been developed to …
An Overview Of Zoo Goals And Exhibition Principles, Randall L. Eaton
An Overview Of Zoo Goals And Exhibition Principles, Randall L. Eaton
Zoos and Aquariums Collection
It is not uncommon among progressive-minded zoo professionals these days to hear disdain for the function of zoos as recreational. This attitude is understandable in that traditionally, zoos have done little but offer amusement along with parklands or picnic facilities. The progressive zoo person sets his or her goals above the old-fashioned recipe of crowding as many exotic animals as possible into an amusement-oriented menagerie to an authentic theme for exhibition intended to educate the public, offer research possibilities, and preserve and propagate species. Nevertheless, recreation remains a primary function of zoos. Most zoo visitors do not seek education in …
Report No 40 - Commercially Exploited Vacsular Plants Native In Western Australia: Census, Atlas And Preliminary Assessment Of Conservation Status, Barbara L. Rye, S. D. Hopper, L. E. Watson
Report No 40 - Commercially Exploited Vacsular Plants Native In Western Australia: Census, Atlas And Preliminary Assessment Of Conservation Status, Barbara L. Rye, S. D. Hopper, L. E. Watson
Fisheries Research Reports
A census and atlas is provided of 1 119 native Western Australian plant species which were commercially exploited during 1977-79 in the cut plant, nursery or seed trades. The exploited species are concentrated in the vicinities of Perth and Albany, the two matin centres for the wildflower industry. Preliminary assessments of the conservation status of the exploited species are provided. Approximately r200 species are regarded as being rare, geographically or poorly collected, and further studies are recommended for these species to determine whether they are in danger of overexploitation.
G80-531 Swine Manure Management Systems, Elbert C. Dickey, Mike Brumm, David P. Shelton
G80-531 Swine Manure Management Systems, Elbert C. Dickey, Mike Brumm, David P. Shelton
University of Nebraska-Lincoln Extension: Historical Materials
This NebGuide examines the advantages and disadvantages of various types of swine manure management systems. Manure management is an integral part of any swine production system and must be carefully considered when planning new or remodeled facilities. Manure management objectives may include 1) optimum nutrient retention and utilization; 2) minimum land, labor or capital requirements; 3) odor control; 4) animal and/or human health and performance considerations; or 5) some combination of these objectives. Because of differences in land availability, climate, capital, labor and management skills among producers, a single, best management system for manure cannot be defined.
Freshwater Wetlands : Their Relevance To The Critical Areas Program Of The State Planning Office, Timothy Zorach
Freshwater Wetlands : Their Relevance To The Critical Areas Program Of The State Planning Office, Timothy Zorach
Maine Collection
Freshwater Wetlands : Their Relevance to the Critical Areas Program of the State Planning Office
by Timothy Zorach : A Report Prepared for the Maine Critical Areas Program, State Planning Office, 184 State Street, Augusta, Maine 04333. November 1979
Planning Report # 70.
Contents: Introduction / Wetland Classification / Ecology of Freshwater Wetland Ecosystems in Maine / Life History of Wetlands / Wetland Management / Freshwater Wetland Evaluation / References Cited and Selected Literature
Part II: A Trial Inventory and Identification of Significant Freshwater Wetlands in the Presumpscot River Basin, Saco River Basin and Associated Coastal Drainage Basins.
G79-474 Understanding Wind Erosion And Its Control, William A. Hayes, C.R. Fenster
G79-474 Understanding Wind Erosion And Its Control, William A. Hayes, C.R. Fenster
University of Nebraska-Lincoln Extension: Historical Materials
Wind erosion is a serious hazard on millions of acres of land in the United States, most of which are in the Great Plains.
There are a number of things an individual can do control wind erosion but basically they all point to accomplishing one or more of the following objectives:
1. Reduce the wind velocity at the soil surface. This is done with windbreaks, crop residues, cover crops, surface roughness, and wind stripcropping.
2. Trap soil particles. This is accomplished by ridging or roughening the soil surface to trap moving soil particles.
3. Increase size of soil aggregates. This …
The Formative Years, Lee W. Lenz
The Formative Years, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
Letters exchanged between Susanna Bixby Bryant, the founder of Rancho Santa Ana Botanic Garden, and several leading southern California botanists and horticulturalists (especially Ernest Braunton, Willis Linn Jepson, and Theodore Payne) in 1925–1926 document her steps toward creating a botanical garden devoted to the native California flora.
Appendix Iii, Lee W. Lenz
Appendix Iii, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
Appendix III features horticultural introductions by John Dourley at Rancho Santa Ana Botanic Garden, Claremont, California, in 1953–1977. The 24 introductions belong to the genera Arctostaphylos (10), Baccharis (2), Berberis (1), Ceanothus (6), Fragaria (1), Fremontodendron (2), and Heuchera (2).
In The Beginning, Lee W. Lenz
In The Beginning, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
This article traces the early history of Rancho Santa Ana Botanic Garden, California, starting ca. 1867 with the Portolà Expedition. The expedition was the first to record the site where the botanic garden later came to be located, in Santa Ana Canyon, northeastern Orange County. Successive changes in land ownership eventually led to the Bixby family purchasing the land in 1875. Susanna Bixby Bryant, the founder of Rancho Santa Ana Botanic Garden, acquired the land in 1925.
The Botanic Garden Moves, Lee W. Lenz
The Botanic Garden Moves, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
In 1950, the decision was taken to relocate Rancho Santa Ana Botanic Garden from its original site—Mrs. Susanna Bixby Bryant's ranch in Santa Ana Canyon, northeastern Orange County—to today's Claremont location in eastern Los Angeles County. The move reflected a wish to align the founder's mandate to "foster scientific research and public welfare" by seeking affiliation with the Claremont Colleges. The change enabled it to train graduate students in botany and related fields and draw more visitors to a garden devoted to native California plants. Accounts describe how the new site was adapted to its purpose, including the construction of …
Front Cover 9(1)
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Foreword 9(1), Mildred E. Mathias
Foreword 9(1), Mildred E. Mathias
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
The Botanic Garden—A Reality, Lee W. Lenz
The Botanic Garden—A Reality, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
The year 1927 marks the beginning of Rancho Santa Ana Botanic Garden at its original location in Santa Ana Canyon, northeastern Orange County, California. Letters exchanged between Susanna Bixby Bryant, the botanic garden founder, and various botanists and horticulturalists trace her efforts to obtain seed and planting stock, herbarium specimens, and books and periodicals for her library. Much discussion is devoted to the question of how to fill the position of Scientific Director.
An Independent Institution, Lee W. Lenz
An Independent Institution, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
Covering the period from approximately 1927 to 1947, this article deals with the management and running of the fledgling Rancho Santa Ana Botanic Garden, featuring the publication of botanical and horticultural papers, the founding of the journal El Aliso, and detailed accounts of field work devoted to the collection of plants for the living collection and herbarium. This period of time also saw several challenges, notably serious damage from a wildfire in 1943, wartime constraints, and the death of the founder and managing director of the garden, Susanna Bixby Bryant.
Acknowledgments, Lee W. Lenz
Acknowledgments, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Front Matter 9(1), Lee W. Lenz
Front Matter 9(1), Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Epilogue, Lee W. Lenz
Epilogue, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
Factors that may have been decisive in turning Rancho Santa Ana Botanic Garden into a successful establishment of botanical teaching and a garden devoted to the conservation and showcasing of the native California flora are put forward. In addition to the enthusiasm and tenacity of its founder, Susanna Bixby Bryant, inspiration and advice came from several other key figures, notably Carl Brandt Wolf, Ernest Braunton, Willis Linn Jepson, and Theodore Payne.
The Years 1960–1977, Lee W. Lenz
The Years 1960–1977, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
In the years 1960–1977, Rancho Santa Ana Botanic Garden fully embraces its role as teaching institution and as advocate and guardian of the native California flora. Expansion of the living collection, landscaping of the grounds, public education, herbarium and library activities, and publication output are detailed. To accommodate a growing number of graduate students, the faculty—consisting of Richard K. Benjamin, Sherwin Carlquist, and Lee. W. Lenz—is joined by Peter H. Raven, Ronald Scogin, John P. Simon, and Robert F. Thorne.
Notes And References, Lee W. Lenz
Notes And References, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
Notes and references pertaining to the history of Rancho Santa Ana Botanic Garden in California are listed.
Back Matter 9(1)
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Index Volume 9, Issue 1 (Golden Aliso)
Index Volume 9, Issue 1 (Golden Aliso)
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
The Awakening Years, Lee W. Lenz
The Awakening Years, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
This article sketches the horticultural climate of southern California in ca. 1900–1930, documenting a rising interest in California native plants. Influential figures in the realm of California botany and horticulture are introduced, especially Theodore Payne. Pomona College, Claremont, expresses an interest in the establishment of a botanical garden.
Contents 9(1), Lee W. Lenz
Contents 9(1), Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
List Of Illustrations 9(1), Lee W. Lenz
List Of Illustrations 9(1), Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Appendix I, Lee W. Lenz
Appendix I, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
Appendix I features the mission statement of Rancho Santa Botanic Garden, Claremont, California, at the time of writing and a photograph depicting staff and students in March 1957.
Appendix Ii, Lee W. Lenz
Appendix Ii, Lee W. Lenz
Aliso: A Journal of Systematic and Floristic Botany
Appendix II lists the names and dissertation titles of 32 students in the botany program jointly administered by Rancho Santa Ana Botanic Garden and Claremont Graduate School/Pomona College who received a doctoral degree in botany between 1954 and 1977.
Back Cover 9(1)
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Influence Of Previous Liming, N And P Fertilization Of An Oxisol On Grain Yield In Navy Beans, H. O. Mongi, A. P. Uriyo
Influence Of Previous Liming, N And P Fertilization Of An Oxisol On Grain Yield In Navy Beans, H. O. Mongi, A. P. Uriyo
Tanzania Journal of Science
A field study was initiated towards the end of the 1973 rain season to assess some residual effects of lime, N and P applications to a moderately acid Oxisol (initial pH 5.6; LR 10 tons/ha) on grain yield in navy beans, Phaseolus vulgaris L., grown soon following maize silage. The Oxisol was a sandy clay loam (35:13:52). The design was a split-plot, confounded factorial with 4 levels of lime at 0, 7.5, 10.0 and 12.5 tons agricultural lime/ha; N at 0, 100, 200 and 300 kg N/ha as ammonium sulphate; and P at 0, 40, 80 and 120 kg P/ha …