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Author : Henry Baldwin Ward
Publisher : Unknown
Page : 132 pages
File Size : 40,9 Mb
Release : 1896
Category : Freshwater biology
ISBN : HARVARD:HN2VQU
Author : Henry Baldwin Ward
Publisher : Sagwan Press
Page : 124 pages
File Size : 41,7 Mb
Release : 2015-08-22
Category : Electronic
ISBN : 129896069X
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : Henry Baldwin Ward
Publisher : Rarebooksclub.com
Page : 48 pages
File Size : 49,9 Mb
Release : 2013-09
Category : Electronic
ISBN : 1230148175
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..".
Author : Henry Baldwin Ward
Publisher : Unknown
Page : 126 pages
File Size : 42,6 Mb
Release : 1896
Category : Freshwater biology
ISBN : HARVARD:32044106200314
Author : John Van Oosten
Publisher : Unknown
Page : 42 pages
File Size : 53,5 Mb
Release : 1960
Category : Fishes
ISBN : UOM:39015086537951
Author : Anonim
Publisher : Unknown
Page : 706 pages
File Size : 49,8 Mb
Release : 1962
Category : Fisheries
ISBN : IND:30000089912715
Author : R. J. Callaway,James W. McGary
Publisher : Unknown
Page : 700 pages
File Size : 55,7 Mb
Release : 1959
Category : Meteorology
ISBN : UCSD:31822009736323
Observations obtained aboard the United States Fish and Wildlife Service research vessels Hugh M. Smith and John R. Manning during Operation NEPAS in 1957 and en route to and from Hawaii
Author : John Van Oosten
Publisher : Unknown
Page : 60 pages
File Size : 41,6 Mb
Release : 1963
Category : Drift bottles
ISBN : UOM:39015086538850
Author : Anonim
Publisher : Unknown
Page : 570 pages
File Size : 48,9 Mb
Release : 1890
Category : Fish culture
ISBN : UCSD:31822031455520
Author : Stephen J. Tarapchak,Eugene F. Stoermer
Publisher : Unknown
Page : 220 pages
File Size : 52,6 Mb
Release : 1976
Category : Eutrophication
ISBN : UOM:39015006879509
Author : Michigan. State Board of Fish Commissioners
Publisher : Unknown
Page : 170 pages
File Size : 51,9 Mb
Release : 1897
Category : Electronic
ISBN : UCAL:B2871793
Author : Anonim
Publisher : Unknown
Page : 948 pages
File Size : 44,8 Mb
Release : 1959
Category : Shrimp industry
ISBN : UCSD:31822009736315
Author : Indiana Academy of Science
Publisher : Unknown
Page : 1116 pages
File Size : 46,9 Mb
Release : 1898
Category : Science
ISBN : UCAL:B2937289
Author : Wisconsin Academy of Sciences, Arts, and Letters
Publisher : Unknown
Page : 696 pages
File Size : 48,9 Mb
Release : 1898
Category : Ojibwa Indians
ISBN : PRNC:32101076432598
Vols. for 1870/72-1926 include: Proceedings, and: List of members of the academy.
Author : Anonim
Publisher : Unknown
Page : 1100 pages
File Size : 45,7 Mb
Release : 1956
Category : Fish culture
ISBN : UOM:39015032247648