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Preliminary Studies Of Zooplankton Distribution With The Continuous Plankton Recorder
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Book Synopsis Preliminary Studies of Zooplankton Distribution with the Continuous Plankton Recorder by : Wayland R. Swain
Download or read book Preliminary Studies of Zooplankton Distribution with the Continuous Plankton Recorder written by Wayland R. Swain and published by . This book was released on 1968 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1982 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report by : United States. Office of Water Resources Research
Download or read book Report written by United States. Office of Water Resources Research and published by . This book was released on 1969 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report - Office of Water Resources Research by : United States. Office of Water Resources Research
Download or read book Annual Report - Office of Water Resources Research written by United States. Office of Water Resources Research and published by . This book was released on 1969 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research & Development Reports by :
Download or read book U.S. Government Research & Development Reports written by and published by . This book was released on 1970 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Spatio-temporal Distribution of Zooplankton Communities in the Southern Ocean South of Australia by : Brian Peter Vere Hunt
Download or read book The Spatio-temporal Distribution of Zooplankton Communities in the Southern Ocean South of Australia written by Brian Peter Vere Hunt and published by . This book was released on 2005 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WRRC Bulletin written by and published by . This book was released on 1969 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report by : United States. Office of Water Resources Research
Download or read book Annual Report written by United States. Office of Water Resources Research and published by . This book was released on 1969 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annotated Bibliography of Zooplankton Sampling Devices by : Jack W. Jossi
Download or read book Annotated Bibliography of Zooplankton Sampling Devices written by Jack W. Jossi and published by . This book was released on 1970 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lake Michigan, a Bibliography by : Water Resources Scientific Information Center
Download or read book Lake Michigan, a Bibliography written by Water Resources Scientific Information Center and published by . This book was released on 1972 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by and published by . This book was released on 1971 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin by : University of Minnesota. Water Resources Research Center
Download or read book Bulletin written by University of Minnesota. Water Resources Research Center and published by . This book was released on 1971 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1970 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physical Processes and Zooplankton Distribution in the Great South Channel by : Ari Wenkart Epstein
Download or read book Physical Processes and Zooplankton Distribution in the Great South Channel written by Ari Wenkart Epstein and published by . This book was released on 1995 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses the question, "How do small-scale physics and biology combine to produce dense aggregations of certain species of zooplankton in the Great South Channel (GSC) of the Gulf of Maine?" The thesis consists of three relatively independent parts: an observational study made while following two right whales as they fed on dense patches of the copepod Galanus finmarchicus in the northern GSC; a detailed description of a tightly integrated set of biological and physical observations made in the GSC by means of a new instrument, the Video Plankton Recorder (VPR); and a two-dimensional Eulerian numerical model that simulates one way in which a physical flow field, combined with a biological behavior pattern, may produce dense plankton patches at a convergent front. Part I: Data from a wide variety of instruments was combined to produce a coherent picture of the physical and biological environment near two feeding right whales observed in June, 1989. Instruments included a CTD (with transmissometer), a MOCNESS net system, a 150-kHz ADCP, and a towed acoustic plankton profiler operating at 120 and 200 kHz. Acoustic data were intercalibrated with net-tow data and with "noise" in the transmissometer signal in order to estimate copepod abundance in the plankton patches on which the whales were feeding. One of the whales was observed to reverse course when copepod abundance dropped below about 1.5- 4.5 x 103 copepods/m3, which is consistent with independent estimates of the density of copepods necessary for a right whale to gain more energy from the prey it ingests than it loses to the extra hydrodynamic drag it experiences while feeding. Part II: The VPR is a towed underwater microscope designed to image plankton non-invasively with sufficient resolution to obtain information on the spatial distribut ion of organisms on scales ranging from millimeters to hundreds of kilometers. CTD instrumentation mounted on the VPR makes it possible to correlate biological and hydrographic data with great precision. This study reports data from one transect made across the GSC in May, 1992. The data show close correlations between hydrographic features (such as fronts, plumes and water masses) and broad-scale plankton distribution. In addition, it was possible to correlate the fine-scale (order tens of meters) patchiness in plankton distribution with the local stability of the water column (as indicated by gradient Richardson number). In one case, biological data provided an aid in determining the origin of one of the observed water masses. Part III: This chapter presents a two-dimensional Eulerian numerical model that shows how depth-keeping swimming behavior on the part of an organism, combined with a convergent flow field at a surface front, can create dense patches of the organism. In this model a steady-state flow field and vertical diffusivity field are prescribed, along with the initial distribution of the plankton. The plankton swim vertically with speeds that depend only on depth, but the form of that depth-dependence may take into account such factors as the vertical variation in light level or in the concentration of some prey organism. An analysis of various nondimensional parameters associated with the model illustrates the roles played in determining the final structure of the patch by such factors as diffusion, water velocity and details of the animals' swimming behavior. Output from the model is compared with data taken at a dense plankton patch observed near a front in the northern Great South Channel in early June, 1989
Book Synopsis Proceedings of Conference on Ongoing Water Resources Research in Minnesota, March 1970 by :
Download or read book Proceedings of Conference on Ongoing Water Resources Research in Minnesota, March 1970 written by and published by . This book was released on 1970 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research and Development Reports Index by :
Download or read book U.S. Government Research and Development Reports Index written by and published by . This book was released on 1970 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research & Development Reports by :
Download or read book U.S. Government Research & Development Reports written by and published by . This book was released on 1970-04 with total page 1446 pages. Available in PDF, EPUB and Kindle. Book excerpt: