Wachstumshormone

Jun

22

Restoration Planting: What’s the Rush?

Filed Under Activities, Biological Diversity, Place-based Education, Questioning strategies, Science, Service learning | Leave a Comment

blanca-and-teresa-measuringCouple some basic curriculum organizers with focused questioning strategies to make your restoration projects coherent and effective environmental education experiences.

by Jim Martin

Environmental education should be a journey, one which captures our interest and imagination and leaves us with the tools to become effective stewards of the place where we live and work. Does it? Perhaps. Mike Weilbacher’s recent articles on environmental education (Weilbacher, 1996, 1997) express his concerns about the knowledge and skills which he believes environmental education should deliver, but doesn’t. He is concerned that we are aware and solicitous of our environments, but do not understand them. Somehow, environmental education hasn’t provided us with the knowledge and skills to think and plan effectively, at least where the environment is concerned.

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Jim Martin conducts teacher-training workshops out of the Center for Science Education at Portland State University. He is the president-elect of the Environmental Education Association of Oregon and is a CLEARING advisory board member. He can be reached at (503) 725-4243.

Jun

12

Why Care About Pollinators?

Filed Under Biological Diversity, Resources, Science, Service learning | Leave a Comment

monarch1Many people think only of allergies when they hear the word pollen. But pollination — the transfer of pollen grains to fertilize the seed-producing ovaries of flowers — is an essential part of a healthy ecosystem. Pollinators play a significant role in the production of over 150 food crops in the United States — among them apples, alfalfa, almonds, blueberries, cranberries, kiwis, melons, pears, plums, and squash.

Bees, both managed honey bees and native bees, are the primary pollinators. However, more than 100,000 invertebrate species, including bees, moths, butterflies, beetles, and flies, serve as pollinators — as well as 1,035 species of vertebrates, including birds, mammals, and reptiles. In the United States, the annual benefit of managed honey bees to consumers is estimated at $14.6 billion. The services provided by native pollinators further contribute to the productivity of crops as well as to the survival and reproduction of many native plants.

However, long-term population trends for some North American pollinators are “demonstrably downward,” says a new report from the National Research Council1.

Observable decreases in wild populations of bees, butterflies, and moths are of great concern to producers of fruits, vegetables, nuts, alfalfa, and flowers. These crops depend on wild and domestic pollinators. Growers in California, Florida, Arizona, Utah, Washington, and Hawaii are especially concerned. More important is the disturbing notion of an imbalance in the natural ecosystem and biodiversity on which all food production depends. Habitat loss for pollinators by human activity poses an immediate and frequently irreversible threat. Other factors responsible for population decreases include invasive plant species, broad-spectrum pesticide use, disease, and weather.

For the most part, the general public is unaware of the decrease in pollinator populations and the implications this has for agricultural production. The Nature’s Partners: Pollinators, Plants, and You curriculum is designed to educate young people about

  • pollinators and the important role they play in providing many of the foods we eat and the plant fiber used in our clothing and household goods, and
  • ways they can help pollinators survive and flourish by protecting and creating pollinator-friendly habitat.

The Nature’s Partners curriculum is just one step toward increasing the public’s awareness and sense of responsibility that are essential to a successful conservation program for pollinators.

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