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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 10 of 34 (0.097 seconds)

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1

Modelling the physics of prawn trawling for fisheries management /

Sterling, David J. January 2005 (has links)
Thesis (Ph.D.)--Curtin University of Technology. / Cover title. Bibliographical references: p. 218-224.
Shrimp fisheries Trawls and trawling
2

Hydrodynamic modeling of nets and trawls

Krishnamurthy, Muthusamy, January 1975 (has links)
Thesis--University of Florida. / Description based on print version record. Typescript. Vita. Includes bibliographical references (leaves 220-222).
Fishing nets Trawls and trawling
3

An investigation of the cumulative impacts of shrimp trawling on mud bottom fishing grounds in the gulf of maine: effects on habitat and macrofaunal community structure /

Simpson, Anne W., January 2003 (has links) (PDF)
Thesis (M.S.) in Oceanography--University of Maine, 2003. / Includes vita. Includes bibliographical references (leaves 90-99).
Fishes Trawls and trawling
4

Using Oregon trawl logbooks to study spatial and temporal characteristics of commercial groundfish species associations

Lee, Yong Woo 29 August 1997 (has links)
Species associations of fifteen major commercial groundfish species in the northeastern Pacific ocean and their spatial and temporal characteristics were studied using Oregon bottom trawl logbook data, 1987 to 1993. Screening procedures were used to remove questionable data from the original logbook files, which resulted in the exclusion of information from 46% of the total available tows. Two multivariate methods, detrended correspondence analysis (DCA) and Ward's method of hierarchical cluster analysis were used to derive the association patterns of species and species groups. A general linear model that was developed for the primary DCA axis suggested that the species associations are strongly correlated with depth, but minimally correlated with the other environmental variables that were examined (latitude, season, and year). The weak correlations between DCA axis 1 and the temporal variables indicate that species associations in the study region are fairly persistent over time. The same multivariate techniques were used to examine possible sampling effects due to changes in the participating trawl vessels that contributed logbook information. Depth and latitudinal distributions of species occurrence in the logbook were similar to distributions derived from National Marine Fishery Service triennial bottom trawl survey. However, the analysis also showed that the depth coverage by the survey is not broad enough to accurately characterize associations among species that are currently subject to commercial fishing activity. / Graduation date: 1998
5

Do fish predators in the North Sea live beyond their means is prey production sufficient to meet consumption? /

Fraser, Helen M. January 2008 (has links)
Thesis (Ph.D.)--Aberdeen University, 2008. / Title from web page (viewed on Feb. 25, 2009). Includes bibliographical references. Print version also available.
6

Optimization of trawlnet codend mesh size to allow for maximal undersized fish release and a model consideration of towing time to the effects of the selection curve /

Ma, Liangzhuang, January 2005 (has links)
Thesis (M.Sc.)--Memorial University of Newfoundland, 2005. / Bibliography: leaves 79-81.
7

The effects of bottom-tending mobile fishing gear and fiber-optic cable burial on soft-sediment benthic community structure /

Nenadovic, Mateja, January 2009 (has links)
Thesis (M.S.) in Marine Biology--University of Maine, 2009. / Includes vita. Includes bibliographical references (leaves 62-72).
8

Detection of trawling noise by Atlantic cod (Gadus morhua L.).

Buerkle, U. January 1973 (has links)
No description available.
Atlantic cod.
Underwater acoustics.
Trawls and trawling.
9

Hierarchical models of fishing behavior by factory trawlers in midwater-trawl fishery for Pacific hake (Merluccius productus) /

Dorn, Martin William, January 1998 (has links)
Thesis (Ph. D.)--University of Washington, 1998. / Vita. Includes bibliographical references (leaves [160]-165).
10

Impacts of otter trawling on infaunal bivalves living in sandy bottom habitats on the Grand Banks /

Gilkinson, Kent Dennis, January 1999 (has links)
Thesis (Ph.D.)--Memorial University of Newfoundland, 1999. / Restricted until June 2000. Includes bibliographical references.

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