Download PDF by James H. Thorp, Alan P. Covich: Ecology and Classication of North American Freshwater

By James H. Thorp, Alan P. Covich

ISBN-10: 0126906475

ISBN-13: 9780126906479

The 1st variation of Ecology and class of North American Freshwater Invertebrates has been immensely well liked by scholars and researchers attracted to freshwater biology and ecology, limnology, environmental technological know-how, invertebrate zoology, and comparable fields. the 1st version has been wide-spread as a textbook and this moment version should still proceed to serve scholars in complex periods. the second one variation positive aspects increased and up to date chapters, specially with recognize to the mentioned references and the category of North American freshwater invertebrates. New chapters or considerably revised chapters comprise these on freshwater ecosystems, snails, aquatic spiders, aquatic bugs, and crustaceans.
* most modern and informative textual content of its kind
* Written via specialists within the ecology of assorted invertebrate teams, insurance emphasizes ecological details inside a present taxonomic framework
* each one bankruptcy includes either morphological and taxonomic details, together with keys to North American taxa (usually to the wide-spread point) in addition to bibliographic info and a listing of extra readings
* The textual content is aimed at researchers and complex undergraduate and graduate scholars

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Additional resources for Ecology and Classication of North American Freshwater Invertebrates

Example text

An Overview of Freshwater Habitats A B FIGURE 1 Lower-order streams: (A) Rocky-bed mountain stream in Glacier National Park, Montana; (B) rocky-bed stream from the Smoky Mountains of North Carolina; (C) sandy, coastal plain stream from South Carolina; (D) intermittent, dry-bed stream from Arizona (photographs by J. H. Thorp). 21 22 J. H. Thorp and A. P. Covich C D FIGURE 1 (Continued ) the depth, and “v” the velocity. As stream flow increases, shear stress is magnified. When the stress reaches a critical point, the substrate is picked up, rolled, or generally moved downstream.

10 7a(6a). Small (50 – 800 ␮m), spindle- or tenpin-shaped, ventrally flattened pseudocoelomates; more or less distinct head bearing sensory cilia; cuticle usually ornamented with spines or scales of various shapes; posterior of body normally formed into a furca with distal adhesive tubes; gastrotrichs (Fig. 5) ................................................................................................. phylum Gastrotricha (Chapter 7) 7b. Not with above characteristics ..........................................................................................................................................................

7a), or hairworms (Nematomorpha; Fig. 7b). 7 6b. Coelomates; legs, lophophorate tentacles, and/or metameres present; snails and mussels (Mollusca; Figs. 8 and 9), segmented worms (Annelida; Figs. 10 and 11), bryozoans (Fig. 12), water bears (Tardigrada; Fig. 13), and arthropods (mites, insects, and crustaceans; Figs. 14 – 20) ...................................................................................................................................................................................

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Ecology and Classication of North American Freshwater Invertebrates by James H. Thorp, Alan P. Covich


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