Explains the mechanisms and describes the processes that underlie gravitropism in roots. Reviews experimental efforts and investigative results that explored the causes of root behavior. (ML)

Describes a method suitable for quantitative studies of plant water status conducted by high school or college students and the calculation of the relative water content (RWC) of a plant. Materials, methods, procedures, and results are discussed, with sample data figures provided. (CS)

Discusses several of the plant responses to the environment and ways that these responses can be demonstrated. Includes phytochrome-controlled growth, phototropism, and geotropism. (CS)

Descriptions of plants suited to specific conservation uses under different site conditions in the Northeast United States are presented in this booklet. The plants are classified into categories based on conservation use. These include: (1) plants for disturbed areas; (2) ornamental ground covers; (3) plants for coastal dunes and sandy inland…

Plants that have been identified as stabilizers and beautifiers of coastal dunes are described in this publication from the Soil Conservation Service (SCS). After years of tests and field trials, the SCS has singled out 43 plants as having good potential for dune revegetation based on their characteristics for erosion control, frequency of…

Descriptons of familiar birds of the Midwest and suggestions for attracting them to urban settings are offered in this publication. Plants which serve as food and protection for birds are identified. These plants are described by: the number of bird species that use the plant; the plant's ornamental value; its time in bloom and in fruit; its…

Descriptions of plants which serve as food and/or protection for birds of the northeast United States are presented in this publication. Explanations are given for each plant as to: ornamental value; time in bloom and in fruit; height; adaptations; and the number of bird species that use it. Practical ideas and suggestions are outlined for…

Illustrations of familiar birds of the northwest United States and suggestions for attracting them to urban settings are offered in this publication. Foods (plants) that are preferred by these birds are also identified. Explanations are given for each plant's ornamental value; time in bloom and in fruit; height; adaptations; and also the number of…

Descriptions of plants which serve as food and/or protection for birds of the southeast United States are presented in this publication. Explanations are given for each plant's ornamental value; time in bloom and in fruit; height; adaptations; and also the number of bird species that use it. Practical ideas are outlined for attracting birds to…

This guide was developed for use by individuals with little or no botanical training who wish to identify native ferns of New York, New England, New Jersey, and Pennsylvania. A random access key, developed by the author, provides multiple pathways for identification of 60 species in 29 genera of ferns. (CS)

Provides information on state trees for each of the 50 states and the District of Columbia. Includes for each state: (1) year in which state tree was chosen; (2) common and scientific names of the tree; (3) arbor day observance; (4) address of state forester; and (5) drawings of the tree, leaf, and fruit or cone. (JN)

Describes Internet sites that are useful for educators planning a school garden. These sites offer information from copy-ready lessons to advice on every topic at all grade levels. Topics range from how-to's for basic gardening, to theme gardening, to discussions of agricultural crops and endangered plants. Many include links to other sites,…

Presented is a description of the creation of the National Forests system, how trees grow, managing the National Forests, types of management systems, and managing for multiple use, including wildlife, water, recreation and other uses. Included are: (1) photographs; (2) line drawings of typical leaves, cones, flowers, and seeds; and (3)…

Outlines a variety of laboratory procedures, techniques, and materials including construction of a survey frame for field biology, a simple tidal system, isolation and applications of plant protoplasts, tropisms, teaching lung structure, and a key to statistical methods for biologists. (DS)

As part of the Professional Development Workshop at Calhoun Community College, the Department of Natural Sciences conducted the third annual Spring Wilderness Pilgrimage in March 1989, a week-long environmental awareness field trip for faculty and staff. Designed as a study of the plants and animals on a barrier island off the coast of Florida,…