Download or read book A Biological Examination of Lake Michigan in the Traverse Bay Region written by Henry Baldwin Ward and published by . This book was released on 1896 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Biological Examination of Lake Michigan in the Traverse Bay Region written by Henry Baldwin Ward and published by . This book was released on 1896 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Biological Examination of Lake Michigan in the Traverse Bay Region written by Henry Baldwin Ward and published by Rarebooksclub.com. This book was released on 2013-09 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1896 edition. Excerpt: ...II. A. 1. in case migrations of large numbers of individuals occurred only vertically. This condition would yield equal volumes for equal bottom hauls but unequal volumes for some other equal hauls. b. Or arranged without reference to each other so that vertical columns of water of equal dimensions and extending from surface to bottom will usually contain unequal volumes of plankton in different parts of the lake. This would result from I. or II. A. 1, by migration of masses of individuals horizontally or obliquely. Such migrating masses may produce local accumulations of any conceivable form or size, such as spheres, sheets extending horizontally or vertically, etc. They are thus capable of producing a wide range of variation in the volume of the plankton from bottom and other hauls. The migrating masses may consist of all the species existing in the plankton and in the proportions in which they exist there--in which case the resulting local accumulations may be called plankton swarms; or they may consist of one or several species and might be called species swarms. Species swarms occurring in such way as to compensate one another would remain undetected by the volumetric method." The work of the first day with the vertical net was experimental, and does not show any uniformity in the number or depth of the various hauls at each station, as given in the table, page 32. They cannot be used for this reason in the comparative study of the strata. In all hauls thereafter distinguished a number of artificial strata as follows: 1. A surface stratum from 2 m. to the surface. we 2. 3. 4. 5. 6. 7. An intermediate stratum from An An A deep A" A" 5 in. to 2 m. "10"" 5" "25" " 10" "50..".

Download or read book A Biological Examination of Lake Michigan in the Traverse Bay Region written by Henry Baldwin Ward and published by Nabu Press. This book was released on 2013-12-10 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.

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Download or read book Proceedings of The Academy of Natural Sciences Vol 151 2001 written by and published by Academy of Natural Sciences. This book was released on with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: