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pro vyhledávání: '"R.G. Halliday"'
Autor:
R.G. Halliday, A.T. Pinhorn
Publikováno v:
Fisheries Research. 97:163-182
The cause of the large decline in groundfish populations in the Northwest Atlantic about 1990 remains unresolved although the prevailing view is that it was due predominantly to fishing. A similar but less extreme decline in these populations that oc
Autor:
R.G. Halliday, A.T. Pinhorn
Publikováno v:
Fisheries Research. 57:211-222
Regulations to prevent the capture of small fish in North Atlantic groundfish fisheries were widely applied in the 1950s by the then recently established international fisheries commissions. These regulations were strengthened after coastal state ext
Autor:
R.G. Halliday
Publikováno v:
Fisheries Research. 57:63-73
The size selection of Atlantic cod and haddock by bottom longlines was described in an experiment conducted off Nova Scotia, Canada, by comparing their catches at length with those from an otter trawl with a small mesh codend fished concurrently. Thr
Autor:
A.T. Pinhorn, R.G. Halliday
Publikováno v:
Fisheries Research. 53:25-37
Regulations to reduce the capture of small, and hence young, fish were introduced for groundfish species in the North Atlantic when the international commissions were established in the 1950s. Extensions of fisheries jurisdiction to 200 nautical mile
Autor:
C.G. Cooper, R.G. Halliday
Publikováno v:
Fisheries Research. 49:77-84
Five otter trawl mesh selection experiments were conducted in Emerald and LaHave basins off Nova Scotia in 1994–1995, using the parallel tow method, to determine the selection of square and diamond mesh netting for silver hake. Length at 50% select
Publikováno v:
Fisheries Research. 41:255-271
The size selection of otter trawls equipped with square or diamond mesh codends with mesh sizes of 130–155 mm was examined for Atlantic cod (Gadus morhua), haddock (Melanogrammus aeglefinus) and pollock (Pollachius virens) in 14 cruises with resear
Autor:
C.G. Cooper, R.G. Halliday
Publikováno v:
Fisheries Research. 40:237-249
The effectiveness of separator grates in reducing bycatches in the small-mesh otter trawl fishery for silver hake on the Scotian Shelf was examined in three experiments aboard a research and two commercial vessels. Different grate bar orientations, b
Publikováno v:
Marine Policy. 16:411-426
Subsequent to extension of fishery jurisdiction in 1977 it was Canadian policy to favour the inshore sector in rehabilitation of the Canadian groundfish fishery. Catch allocation, limited entry licensing and vessel replacement policies were implement
A HISTORY OF MARINE FISHERIES SCIENCE IN ATLANTIC CANADA AND ITS ROLE IN THE MANAGEMENT OF FISHERIES
Autor:
L.P. Fanning, R.G. Halliday
Publikováno v:
Proceedings of the Nova Scotian Institute of Science (NSIS). 43
The roots of fisheries science on the Atlantic coast of Canada go back to 1898.The primary research agencies were the Fisheries Research Board of Canada andpredecessors until the early 1970s and subsequently the federal department responsible for fis
Publikováno v:
Fisheries Research. 44:197