Human mobility has radically increased the rate at which large numbers of living things are moving from one ecosystem to another. Discusses how ecosystems change when "exotic" species invade natural communities and notes efforts to control adverse effects. (LZ)

Through seining individuals, families, camps, and schools can continuingly test the aquatic life just beyond the waterline. This article discusses the process of using a seine net and what can be found in the net. (NQ)

In designing a course for environmentally aware citizens, the need for an understanding of basic ecological principles was identified and incorporated. Funds for this project were provided by an Environmental Education Act Grant that included tuition and books. Participant feedback indicated that the project was successful in clarifying…

This book is concerned with man and his environment. It is an attempt to look at environmental and human problems from an ecological viewpoint; an attempt to ". . . provide a factual basis on which action to improve the environment can be taken." This book is written for the beginning university student (and the interested public). As a result,…

Presents concrete suggestions regarding the role of individuals and groups within the Division of Invertebrate Zoology (DIZ) of the American Society of Zoologists (ASZ) regarding their contributions toward constructive environmental action. (Author/EB)

Describes the projects undertaken by each of four teams working in different areas of environmental research. (LS)

The effect that pesticides can have on natural ecosystems is discussed. Specific examples are drawn from microbial ecosystems in estuarine regions. (DT)

Describes an insectary which is inexpensive and easily constructed of small blocks of wood with holes drilled in them. Suggests several areas for study which can be accomplished with the insectary. (SLH)

This environmental education strategy was developed by a Bureau of Land Management (BLM) Washington Office Task Group in collaboration with staff at all levels of the BLM. The strategy calls for the BLM to expand its efforts in educating citizens about ecosystems and ecosystem management, and to establish environmental education as an integral…

Describes the continuing efforts of environmentalists to eliminate the use of chlorinated hydrocarbons as pesticides, and in particular discusses the opposing positions taken by the Environmental Defense Fund and the Shell Chemical Company on the use of aldrin and dieldrin. (JR)

Compares traditional manure application planning techniques calculated to meet agronomic nutrient needs on a field-by-field basis with plans developed using computer-assisted linear programming optimization methods. Linear programming provided the most economical and environmentally sound manure application strategy. (Contains 15 references.) (MDH)

Pollination is a broad area of study within biology. For many plants, pollen carried by wind is required for successful seed set. Airborne pollen also affects human health. To foster studies of airborne pollen, we introduce a simple device--the "megastigma"--for collecting pollen from the air. This device is flexible, yielding easily obtained data…

Many wildlife enthusiasts are aware of the need for planting certain flowers, shrubs, and trees to attract animals. Some arrange their yards to provide for food, water, cover, and areas for animals to bear and raise their young. These include city dwellers who create mini-refuges in tiny urban plots and suburbanites who design elaborate…

This high school environmental guide uses the Students Toward Environmental Participation (S.T.E.P.) approach. Activities are designed to develop an awareness of the purpose, interrelationship, and wholeness of the earth through activities, games and role-playing. Sample activities include: trust walk, scavenger hunt, nature collage, and alphabet…

Argues that overexploitation of renewable biological resources to the point of extinction is possible under private (commercial) management. Public surveillance is necessary to prevent severe depletion of resources. An economic theory of a biological resource is developed, using the blue whale population as an example. (JR)