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Lichens Pb
 
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Lichens Pb (Paperback)

by W Purvis (Author)
5.0 out of 5 stars  See all reviews (2 customer reviews)
List Price: CDN$ 21.99
Price: CDN$ 16.05 & eligible for FREE Super Saver Shipping on orders over CDN$ 39. Details
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Lichens Pb + Spiders of the North Woods
Price For Both: CDN$ 40.01

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  • This item: Lichens Pb by W Purvis

    Usually ships within 4 to 6 weeks.
    Ships from and sold by Amazon.ca.
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  • Spiders of the North Woods by Weber

    Usually ships within 4 to 6 weeks.
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Lichens Pb 5.0 out of 5 stars (2)
CDN$ 16.05
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Customer Reviews

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5.0 out of 5 stars (2 customer reviews)
 
 
 
 
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5.0 out of 5 stars Excellent overview, Mar 30 2003
By Erika Mitchell (E. Calais, VT USA) - See all my reviews
(TOP 500 REVIEWER)    (REAL NAME)   
This book provides a great introduction to the study of lichens. In concise text that assumes very little specialist knowledge, Purvis explains what lichens are and how they grow. He goes on to explain their role in ecosystems and many of the various uses that have been developed for lichens over the years. He delves into the use of lichens for biomonitoring at great length, and provides many examples of how lichens have been used to monitor or detect air pollution or metals contamination. The book includes color pictures, illustrations, and graphs on each page. At the end of the book, Purvis includes some suggested serious lichen research projects that even beginners could undertake. There is a glossary, an index, and list of books and Websites for further study. This book is a great place to get started in lichenology. It would also make a great science or ecology text for older homeschoolers.
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5.0 out of 5 stars Very attractive and informative, Nov 10 2002
By Kate McDonald (Ventura, CA United States) - See all my reviews
This is a marvelous introduction to lichens. The author is a lichenologist at The Natural History Museum in London and is enthusiastic about his subject. The book is a very manageable length-a little over 100 pages-and explains what a lichen is (a combination of two organisms: a fungus and a photosynthesizing partner, usually an algae), and other topics such as lichen evolution, the ecological role of lichens, lichens in forests, lichens in extreme environments, and biomonitoring. The author also includes a chapter on practical projects-collecting, monitoring, and photographing lichens-which motivated me to order a magnifying glass. One of the projects the author suggests is to visit churchyards to learn about lichens and their ecology. As he says, "The thing that makes churchyards so useful is the multitude of conveniently dated surfaces."

The book is profusely and attractively illustrated with one or more color photographs, drawings, or diagrams on every page. Many of the pictures show different lichens, either in a natural setting such as on a tree or as a close up. Some features are illustrated with both a regular and a microscopic photo. For example, there is a picture of a lichen with a lovely gray color on the fruiting body (the structure that forms fungal spores for reproduction) and a scanning electron microscope picture of the calcium oxalate crystals which cause the color. I enjoyed the sidebars on various topics like "Tests for lichen substances" and "Why do different lichens grow on trees."

The book includes a glossary, a bibliography, web links for more information, and an index.

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