Category: Books

Survival, Pb-uptake and behaviour of three species of earthworm in Pb treated soils determined using an OECD-style toxicity test and a soil avoidance test [An article from: Environmental Pollution]

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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:
Mature (clitellate) Eisenia andrei Bouche (ultra epigeic), Lumbricus rubellus Hoffmeister (epigeic), and Aporrectodea caliginosa (Savigny) (endogeic) earthworms were placed in soils treated with Pb(NO”3)”2 to have concentrations in the range 1000 to 10 000 mg Pb kg^-^1. After 28 days LC50″-“9″5″%”c”o”n”f”i”d”e”n”c”e” “l”i”m”i”t^+^9^5^%^c^o^n^f^i^d^e^n^c^e^ ^l^i^m^i^t values were E. andrei5824”-“3″6″1^+^8^9^8 mg Pb kg^-^1, L. rubellus2867”-“1″9″3^+^1^4^5 mg Pb kg^-^1 and A. caliginosa2747”-“3″0″4^+^2^3^9 mg Pb kg^-^1 and EC50s for weight change were E. andrei2841”-“6″8^+^1^5^0 mg Pb kg^-^1, L. rubellus1303”-“2″0″1^+^2^4^0 mg Pb kg^-^1 and A. caliginosa1208”-“2″0″6^+^2^1^2 mg Pb kg^-^1. At any given soil Pb concentration, Pb tissue concentrations after 28 days were the same for all three earthworm species. In a soil avoidance test there was no difference between the behaviour of the different species. The lower sensitivity to Pb exhibited by E. andrei is most likely due to physiological adaptations associated with the modes of life of the earthworms, and could have serious implications for the use of this earthworm as the species of choice in standard toxicological testing.

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Cool Tools: A Catalog of Possibilities

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Cool Tools is a highly curated selection of the best tools available for individuals and small groups. Tools include hand tools, maps, how-to books, vehicles, software, specialized devices, gizmos, websites — and anything useful. Tools are selected and presented in the book if they are the best of kind, the cheapest, or the only thing available that will do the job. This is an oversized book which reviews over 1,500 different tools, explaining why each one is great, and what its benefits are. Indirectly the book illuminates the possibilities contained in such tools and the whole catalog serves an education outside the classroom. The content in this book was derived from ten years of user reviews published at the Cool Tools website, cool-tools.org.
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