Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 432
Book Description
Abstracts of Selected IES Doctoral Dissertations, Master's Theses, and Other Graduate Projects, 1977-1984
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 432
Book Description
A Review of the World Resources of Mesopelagic Fish
Author: J. GjøsaeterPublisher: Food & Agriculture Org.
ISBN: 9789251009246
Category : Nature
Languages : en
Pages : 164
Book Description
A fish species can be called mesopelagic if it spends the day in the mesopelagic zone. The mesopelagic zone has been defined in different ways based on depth, temperature and light regimes. For the present purpose, depth seems to be the best criterion and mesopelagic fish can thus be defined as species generally spending the day at depths between approximately 200 and 1 000 m. Generally they perform a diel migration, coming to the upper 200 m or even to the surface during the night. The present report briefly reviews the systematics ecology and life history of important groups of mesopelagic fish. Further, some methods used for abundance estimation of these fish are described and discussed. The bulk of the report reviews the present knowledge of abundance and species composition of mesopelagic fish in each of the FAO statistical areas. Although the data in most cases are few, an attempt has been made to give tentative estimates of the biomass and production in the various areas. When available, information on the life history of the most important species in each area is also given.
IES Report
Author: Publisher:
ISBN:
Category : Conservation of natural resources
Languages : en
Pages : 798
Book Description
Geostatistics for Estimating Fish Abundance
Author: J. RivoirardPublisher: John Wiley & Sons
ISBN: 0470756888
Category : Technology & Engineering
Languages : en
Pages : 216
Book Description
Geostatistics is a branch of spatial statistics that was originally developed for the mining industry. The technique is now widely recognised as an important tool for the estimation of the abundance and distribution of natural resources. However, new developments have been required to extend its application to fisheries science, particularly in variogram estimation. This important new title describes the fundamentals of geostatistics in terms more familiar to life-scientists, and uses case studies on seven commercially important fish stocks to demonstrate its application to fisheries survey data. Comprehensive and practical advice is given on how this new method can be used to estimate the abundance (with an appropriate measure of precision) of fish stocks worldwide. Geostatistics for Estimating Fish Abundance will be of vital interest to fisheries research scientists, marine biologists, oceanographers, marine and fish ecologists, environmental scientists and experts involved in the assessment of natural animal resources. The book has been developed as a result of studies carried out by a collaborative team of international researchers expert in this area with financial support from the Commission of the European Communities, AIR specific RTD programme. J. Rivoirard and N. Bez are at the Centre de Géostatistique de Fontainebleau, Ecole des Mines de Paris, France, J. Simmonds and P. Fernandes are at the FRS Marine Laboratory, Aberdeen, UK and K. Foote is at the Institute of Marine Research, Bergen, Norway and at Woods Hole Oceanographic Institution, USA.
Fishery Bulletin
Author: NOAA Technical Report NMFS.
Author: National Oceanic and Atmospheric Administration Technical Report National Marine Fisheries Service
Author: The History, Present Condition, and Future of the Molluscan Fisheries of North and Central America and Europe
Author: Clyde L. MacKenziePublisher:
ISBN:
Category : Shellfish fisheries
Languages : en
Pages : 494
Book Description
Fisheries Acoustics
Author: John SimmondsPublisher: John Wiley & Sons
ISBN: 0470995297
Category : Technology & Engineering
Languages : en
Pages : 456
Book Description
Living resources of the sea and fresh water have long been an important source of food and economic activity. With fish stocks continuing to be over-exploited, there is a clear focus on fisheries management, to which acoustic methods can and do make an important contribution. The second edition of this widely used book covers the many technological developments which have occurred since the first edition; highly sophisticated sonar and computer processing equipment offer great new opportunities and Fisheries Acoustic, 2e provides the reader with a better understanding of how to interpret acoustic observations and put them to practical use. Well known and respected authors Emphasis on practical acoustic methods Detailed coverage of a commercially and environmentally important subject A vital tool for fisheries scientists, fisheries oceanographers, environmental biologists, ecologists, population biologists, fish biologists, and marine biologists. All those involved with design and use of acoustic equipment. Libraries in research establishments, government stations and universities where fisheries science is studied or taught will find this a welcome addition to their shelves.
Author: