Measurement of Zooplankton Biomass by Carbon Analysis for Application in Sound Scattering Models PDF Download
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Author: James Carlton Radney
Publisher:
ISBN:
Category : Animal populations
Languages : en
Pages : 260
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Book Description
Estimates of zooplankton biomass were made by use of a LECO Carbon Analyzer. The methodology developed in this study is a rapid, precise and accurate measurement of total carbon. Casein and benzoic acid were used interchangeably as standards. The technique was further tested on Tigriopus californicus which yielded a value of 38.6% C by weight. Estimates of total, living, and dead zooplankton biomass were made in a joint experiment by carbon analysis and ATP-C measurements. Field studies in Monterey Bay demonstrated a definite seasonal trend over the period of three cruises.
Author: James Carlton Radney
Publisher:
ISBN:
Category : Animal populations
Languages : en
Pages : 260
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Book Description
Estimates of zooplankton biomass were made by use of a LECO Carbon Analyzer. The methodology developed in this study is a rapid, precise and accurate measurement of total carbon. Casein and benzoic acid were used interchangeably as standards. The technique was further tested on Tigriopus californicus which yielded a value of 38.6% C by weight. Estimates of total, living, and dead zooplankton biomass were made in a joint experiment by carbon analysis and ATP-C measurements. Field studies in Monterey Bay demonstrated a definite seasonal trend over the period of three cruises.
Author:
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ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 954
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Book Description
Author:
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 610
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Book Description
Author:
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ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 882
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ISBN:
Category : Electronic journals
Languages : en
Pages : 164
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Book Description
Author:
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ISBN:
Category :
Languages : en
Pages : 880
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Book Description
Author: S. C. Venema
Publisher:
ISBN:
Category : Echo sounding in fishing
Languages : en
Pages : 160
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Book Description
Author: Roger Harris
Publisher: Elsevier
ISBN: 0080495338
Category : Science
Languages : en
Pages : 707
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Book Description
The term "zooplankton" describes the community of floating, often microscopic, animals that inhabit aquatic environments. Being near the base of the food chain, they serve as food for larger animals, such as fish. The ICES (International Council for the Exploration of the Sea) Zooplankton Methodology Manual provides comprehensive coverage of modern techniques in zooplankton ecology written by a group of international experts. Chapters include sampling, acoustic and optical methods, estimation of feeding, growth, reproduction and metabolism, and up-to-date treatment of population genetics and modeling. This book will be a key reference work for marine scientists throughout the world. - Sampling and experimental design - Collecting zooplankton - Techniques for assessing biomass and abundance - Protozooplankton enumeration and biomass estimation - New optical and acoustic techniques for estimating zooplankton biomass and abundance - Methods for measuring zooplankton feeding, growth, reproduction and metabolism - Population genetic analysis of zooplankton - Modelling zooplankton dynamics This unique and comprehensive reference work will be essential reading for marine and freshwater research scientists and graduates entering the field.
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Languages : en
Pages : 0
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Book Description
This thesis develops methods useful for estimating zooplankto distributions in the field by combining acoustic scattering models and an integrated set of field data. The accuracy of existing scattering models for fluid-like and elastic-shelled animals is determined by analysis of scattering data from individual animals in a laboratory tank, Results indicate that simple two-ray scattering models are accurate and allow predictions of size or orientation of an animal to be made for certain animal orientations. A scattering model for gas-bearing zooplankton is compared with in situ multiple frequency acoustic measurements from siphonophores. Estimates of the numerical density of these animals are made using echo integration data from a scientific echo-sounder. Multiple frequency acoustic scattering data from a survey of an internal wave are analyzed to determine the contributions from biological and physical sources. Net tow data provide information about biological scatterers while temperature and salinity profiles are used with a theoretical scattering model to predict contributions from physical sources. Results indicate that scattering from physical sources is comparable to that from biological sources in certain regions and that scattering spectra may be used to distinguish these sources. Improved estimates of biomass from acoustic scattering data were made by accounting for the scattering contributions from physical sources. This is the first work to quantify the scattering contributions from biological and physical sources of scattering in a field study.
