Browsing Irish Fisheries Leaflets by Author "Griffith, David de G"
Investigation into the Toxicity of Corexit - A new oil dispersantGriffith, David de G (Department of Agriculture and Fisheries (Fisheries Division), 1969)In view of the high degree of toxicity (Smith 1968, Simpson 1968) of BP 1002, Gamlen Oil Spill Remover, Dasic Slickgone and other "detergents" used in Cornwall to combat pollution from Torrey Canyon oil, it was considered desirable to investigate the toxicity of a compound marketed as an oil dispersant under the brand name "Corexit 7664", claimed by the manufacturers to be non-toxic to marine fauna. It is produced by the Standard Oil Company of New Jersey and marketed in the U.K. by the Esso Petroleum Company. It is stated by the manufacturers to be a non-ionic surfactant, soluble in fresh water, 5% NaCL solution and isopropanol, and dispersible in fuel and crude oils. It contains no organic halides or heavy metals. The investigations reported in this paper were made in two experiments. In the first, the toxic effects of straight dilutions of Corexit in seawater were assessed. In the second, the toxicity of Corexit-dispersed crude oil was compared with that of crude oil alone, with an attempt to imitate conditions at low tide on a polluted beach. The first experiment was carried out in Bantry, Co. Cork, using material collected locally. The second experiment was carried out in the laboratory of the Fisheries Division, Department of Agriculture and Fisheries, and the material was collected at Sandycove, eight miles south of Dublin.
Mulroy Bay Scallop Research 1980Griffith, David de G (Department of Agriculture and Fisheries (Fisheries Division), 1981)Following a preliminary investigation in 1977, the Department of Fisheries & Forestry carried out an intensive multi-disciplinary survey of Mulroy Bay in the summer of 1978. The results of this "blitz" survey, when evaluated, formed the basis of more extensive research in the North Water during 1979. This North Water programme was expanded in 1980, as part of the Department's contribution to a co-operative research programme on Mulroy Bay organised in conjunction with the National Board for Science & Technology. This included a hydrographic survey, specially commissioned by the Department, to produce a detailed bathymetric chart of the North Water. This was made available free of charge to interested individuals and groups in the locality. The 1980 research results were presented at a seminar in January 1981 at the Department's Fisheries Research Centre, which was organised in order that the data obtained could be discussed and evaluated by the individuals and agencies involved in the field programme. This Fisheries Leaflet is a summary of the papers read at that seminar, by staff of the Fisheries Research Centre.
The Torrey Canyon Disaster: A review of methods employed to combat large scale oil pollutionGriffith, David de G (Department of Agriculture and Fisheries (Fisheries Division), 1969)In this review an attempt has been made to collate the central points of the most important of the multitudinous reports which have appeared in connection with the Torrey Canyon oil pollution. The content has been limited to the biological aspects of a large-scale oil spillage and its subsequent treatment, although the importance of tourist amenities also receives consideration in the discussion. Consequently, several related topics which lie outside the scope of the biologist have either been omitted or just mentioned in passing: they include the technical problems of the salvage of oil from a crippled tanker, the control or collection of floating oil, and the administrative organisational requirements for effective action in an emergency of this kind.