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4.3<br />
Reish, D.J. (1959). Modification of the Hayward orange peel bucket for<br />
bottom sampling. Ecology 40, 502-3. [Describes improved grab for<br />
quantitative sampling] R, M, Mar<br />
4.3. PETERSEN-TYPE<br />
[Grab with weighted jaws; small version of grab used<br />
commercially for dredging, unloading coal, etc.,<br />
usually samples about 0.1 m 2 of bottom]<br />
Flury, J. (1963). A modified Petersen grab. J. Fish. Res. Bd Can. 20,<br />
1549-50. [Petersen grab with pneumatic closing mechanism]<br />
R, M, Mar<br />
Hartman, 0. (1955). Quantitative survey of the benthos of San Pedro<br />
Basin, Southern California. Part 1. Preliminary results. Allan Hancock<br />
Pacif. Exped. 19, 185 pp. [Used 'Campbell' grab which is a large<br />
version of a Petersen grab, weighs 410 kg] R, M, Mar<br />
Hartman, 0. & Barnard, J.L. (1958). The benthic fauna of the deep basins<br />
off Southern California. Allan Hancock Pacif. Exped. 22, 67 pp.<br />
[Used 'Campbell' grab] R, M, Mar<br />
Leger, M. (1904). Sondeur a drague. (Dredger) (In French). Bull. Mus.<br />
oceanogr. Monaco 8, 8 pp. [Modified Petersen grab called 'Monaco'<br />
grab] R, M, Mar<br />
Lisitsyn, A.P. & Udintsev, G.B. (1955). New model dredges. (In Russian).<br />
Trudy vses. gidrobiol. Obshch. 6, 217-222. ['Okean' grab, weight 150<br />
kg, similar to Freidinger modification of Petersen grab (see Naumann<br />
1925)] R, M, Mar<br />
Naumann, E. (1925). See und Teich. (Lake and pond) (In German). Handb.<br />
biol. ArbMeth. 9, 103-138. [Describes Friedinger modification of<br />
Petersen grab; jaws closed by cords that cross from one jaw to the<br />
other] R, M, FW<br />
Petersen, C.G.J. & Boysen Jensen, P. (1911). Valuation of the Sea. I.<br />
Animal life of the sea bottom, its food and quantity. Rep. Dan. biol.<br />
Stn 20, 81 pp. [Early description of Petersen grab] R, M, Mar<br />
Petersen, C.G.J. (1918). The sea bottom and its production of fish food.<br />
Rep. Dan. biol. Stn 25, 62 pp. [Early description of Petersen grab]<br />
R, M, Mar<br />
Zhadin, V.I. (1960). Methods of hydrobiological investigation (In Russian).<br />
Moskva. Vysshaya Shkola 191 pp. [Describes 'Okean' grab (see Lisitsyn<br />
& Udintsev, 1955)]<br />
4.4. SMITH-McINTYRE-TYPE<br />
[Jaws forced into sediment by two springs; usually<br />
samples about 0.1 m 2 of bottom to depth of 7 cm]<br />
Carey, A.G. & Paul, R.R. (1968). A modification of the Smith-Mclntyre<br />
grab for simultaneous collection of sediment and bottom water. Limnol.<br />
Oceanogr. 13, 545-549. R, M, Mar<br />
Hunter, B. & Simpson, A.E. (1976). A benthic grab designed for easy<br />
operation and durability. J. mar. biol. Ass. U.K. 56, 951-957.<br />
[Modified Smith-Mclntyre grab called Hunter grab] R, MC, Mar<br />
22