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

Life Sciences Commons™

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

Conservation

Discipline
Institution
Publication Year
Publication
Publication Type
File Type

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 Apr 1981

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 Jan 1981

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 Jan 1981

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 Jan 1981

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 Jan 1980

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 Jan 1980

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 Nov 1979

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 Jan 1979

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 Jan 1977

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 Jan 1977

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 Jan 1977

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 Jan 1977

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) Jan 1977

Front Cover 9(1)

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Foreword 9(1), Mildred E. Mathias Jan 1977

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 Jan 1977

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 Jan 1977

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 Jan 1977

Acknowledgments, Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Front Matter 9(1), Lee W. Lenz Jan 1977

Front Matter 9(1), Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Epilogue, Lee W. Lenz Jan 1977

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 Jan 1977

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 Jan 1977

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) Jan 1977

Back Matter 9(1)

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Index Volume 9, Issue 1 (Golden Aliso) Jan 1977

Index Volume 9, Issue 1 (Golden Aliso)

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


The Awakening Years, Lee W. Lenz Jan 1977

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 Jan 1977

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 Jan 1977

List Of Illustrations 9(1), Lee W. Lenz

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.


Appendix I, Lee W. Lenz Jan 1977

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 Jan 1977

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) Jan 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 Jul 1975

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 …