Avoidance bio-assays may help to test the ecological significance of soil pollution [An article from: Environmental Pollution]

This digital document is a journal article from Environmental Pollution, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
We measured the short-term (100min) avoidance of a soil heavily polluted by hydrocarbons by the soil springtail Folsomia candida, at six rates of dilution in a control, unpolluted soil. We compared the results with those of long-term (40-day) population tests. Five strains were compared, of varying geographical and ecological origin. When pure, the polluted soil was lethal in the long-term and avoided in the short-term by all strains. Avoidance tests, but not population tests, were able to discriminate between strains. Avoidance thresholds differed among strains. Two ecological consequences of the results were discussed: (i) toxic compounds may kill soil animals or deprive them from food, resulting in death of populations, (ii) pollution spots can be locally deprived of fauna because of escape movements of soil animals. Advantages and limitations of the method have been listed, together with proposals for their wider use in soil ecology and ecotoxicology.

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Avoidance bio-assays may help to test the ecological significance of soil pollution [An article from: Environmental Pollution]

This digital document is a journal article from Environmental Pollution, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
We measured the short-term (100min) avoidance of a soil heavily polluted by hydrocarbons by the soil springtail Folsomia candida, at six rates of dilution in a control, unpolluted soil. We compared the results with those of long-term (40-day) population tests. Five strains were compared, of varying geographical and ecological origin. When pure, the polluted soil was lethal in the long-term and avoided in the short-term by all strains. Avoidance tests, but not population tests, were able to discriminate between strains. Avoidance thresholds differed among strains. Two ecological consequences of the results were discussed: (i) toxic compounds may kill soil animals or deprive them from food, resulting in death of populations, (ii) pollution spots can be locally deprived of fauna because of escape movements of soil animals. Advantages and limitations of the method have been listed, together with proposals for their wider use in soil ecology and ecotoxicology.

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Geology Underfoot in Northern Arizona

From the plunging depths of the Grand Canyon to jagged volcanic peaks, from Sedona’s vibrant red rocks to the tapered slot of Antelope Canyon, Geology Underfoot in Northern Arizona introduces you to a land of contrasts. At twenty special sites in this timeless landscape, readers can see and sometimes touch evidence of an ancient supercontinent and colliding volcanic island arcs, mighty mountain ranges and tropical seas, thousand-foot sand dunes, a meteor with deep impact, swimming dilophosaurs, a spring that grows rock, and more. The Geology Underfoot series encourages you to get out of your car for an up-close look at rocks and landforms. Books in the series inform, no matter how much geology you know. They’re also simply a good read, on-site or in the comfort of your home.

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The Vegetable Gardener’s Bible

The invaluable resource for home food gardeners! Ed Smith’s W-O-R-D system has helped countless gardeners grow an abundance of vegetables and herbs. And those tomatoes and zucchini and basil and cucumbers have nourished countless families, neighbors, and friends with delicious, fresh produce. The Vegetable Gardener’s Bible is essential reading for locavores in every corner of North America!

Everything you loved about the first edition of The Vegetable Gardener’s Bible is still here: friendly, accessible language; full-color photography; comprehensive vegetable specific information in the A-to-Z section; ahead-of-its-time commitment to organic methods; and much more.

Now, Ed Smith is back with a 10th Anniversary Edition for the next generation of vegetable gardeners. New to this edition is coverage of 15 additional vegetables, including an expanded section on salad greens and more European and Asian vegetables. Readers will also find growing information on more fruits and herbs, new cultivar photographs in many vegetable entries, and a much-requested section on extending the season into the winter months. No matter how cold the climate, growers can bring herbs indoors and keep hardy greens alive in cold frames or hoop houses.

The impulse to grow vegetables is even stronger in 2009 than it was in 2000, when Storey published The Vegetable Gardener’s Bible. The financial and environmental costs of fossil fuels raise urgent questions: How far should we be shipping food? What are the health costs of petroleum-based pesticides and herbicides? Do we have to rely on megafarms that use gasoline-powered machinery to grow and harvest crops? With every difficult question, more people think, “Maybe I should grow a few vegetables of my own.” This book will continue to answer all their vegetable gardening questions.

Praise for the First Edition:
“In every small town, there is a vegetable garden that people go out of the way to walk past. Smith is the guy who grew that garden.” — Verlyn Klinkenborg, The New York Times Book Review

“An abundance of photographs . . . visually bolster the techniques described, while frequent subheads, sidebars, and information-packed photo captions make the layout user-friendly . . . [Smith’s] book is thorough and infused with practical wisdom and a dry Vermont humor that should endear him to readers.” — Publisher’s Weekly

“Smith . . . clearly explains everything novice and experienced gardeners need to know to grow vegetables and herbs. . . . ” — Library Journal

“this book will answer all your questions as well as put you on the path to an abundant harvest. As a bonus, anecdotes and stories make this informative book fun to read.” – New York Newsday

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