Report Of The Danish Biological Station To The Ministry Of Shipping And Fishing

Author : C. G. Joh Peterson
Publisher : Forgotten Books
ISBN 13 : 9780267638949
Total Pages : 50 pages
Book Rating : 4.6/5 (389 download)

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Download or read book Report of the Danish Biological Station, Vol. 3 written by C. G. Joh Peterson and published by Forgotten Books. This book was released on 2018-02-03 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Report of the Danish Biological Station, Vol. 3: To the Home Department, 1892 On the 4. Of April 1891 the Biological Station arrived at Fman; on the til-eastern part of which, at Espenhoved, it was moored by 4 anchors, do that it in the strong current (strong, especially, when coming from the south) which runs ough the F acne Sound. From this place our operations could be extended over following seas (emp. The chart): F acne Sound and the currentseas from Middel t as far as Stenderup Hage, moreover, (iamborg and Kolding Fjords, and the rthern part of the expansion between Funen arid. Sleswick south of pyne-skov i Stenderup, waters which are certainly inconside'rable in extent, but which Vertheless present many different natural conditions, Jhere being among them 'y deep seas with a rapid current as well as snug little fjords with calm, shallow ters. It might be anticipated that these current-seas would offer favourable portunities for the exploration of the aplanctonc of the sea, and on the Whole the exploration of everything that is carried along with and lives in the rapidly wing waters; for this reason, especially, the station was placed in the very trent. I was able now, simply by hanging out pelagic bags by the side of a ship, to let the current pass through these, and thus catch the organisms that e in the water. By this arrangement much time was saved, as it was unneces 'y to sail about with the bags, and the latter might be left without inspection long as we wanted. It gave us the advantage also of the bags hanging out hing during the night, and this is the most favourable time, as many animals cmot avoid the bags in the darkness, as they would have been able to do in a day time; moreover many species of animals, certainly, move about in the riace-water far oftener in the night than during the day, in consequence of nich, too, a greater number is caught. This is particularly applicable to Gam zridm and Cmna'cea, perhaps also to certain other (t'rustacea and a few Annelidcc, which I have been convinced, partly by comparing the catch of the day to at of the night, partly by lightening the surface of the water in calm nights by sans of a small electric l& shoals of Gamma-ride for instance, are then seen arming about, which we do not observe in the day-time. Owing to the great facilities for pelagic fishing, the latter has been carried so to speak every night from April 4. - November 1891, when the Station ls towed to Kolding, and from April 2. - September 1892, when the Station ft Fauna, and was towed to Svendborg Sound. The interval I have tried to fill by means of a few observations. The contents of this pelagic fishing have been proved to change much cording to the seasons; I shall state it here for every month during the said time. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.