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8<br />

Pearson, R.G., Litterick, M.R. & Jones, N.V. (1973). An air-lift for<br />

quantitative sampling of the benthos. Freshwat. Biol. 3, 309-15.<br />

[Compares air-lift sampler with Surber sampler and Allan grab] FW<br />

Petersen, C.G.J. (1913). Valuation of the sea. II. The animal communities<br />

of the sea bottom and their importance for marine zoogeography. Rep.<br />

Dan. biol. Stn 25, 62 pp. [Compares his grab with a dredge] Mar<br />

Prejs., A. (1969). Differences in abundance of benthos and reliability of<br />

its assessment in several lake habitats. Ekol. pol. (A) 17, 133-47.<br />

[Compares two corers (sampling area 10 cm 2 , 45 cm 2 ) of Kajak et al.<br />

(1965) with three Ekman grabs (sampling area 225 cm 2 and grab 20 cm or<br />

40 cm high, sampling area 500 cm 2 and grab 40 cm high] FW<br />

Reys, J.P. (1964). Les prelevements quantitatifs du benthos de substrats<br />

meubles. (Quantitative sampling of the benthos of loose substrata) (In<br />

French). Terre Vie 94-105. [Compares Petersen grab, van Veen grab,<br />

orange-peel grab, Smith-Mclntyre grab, Holme double mud scoop] Mar<br />

Reys, J.P., True, R. (1966). Un nouvel appareil de prelevement quantitatif<br />

de substrats meubles. (New apparatus for the quantitative sampling<br />

of loose substrata) (In French). 2nd Int. oceanogr. Congr. Moscow 2,<br />

298-299. [Abstract only: see True et al (1968), compares their suction<br />

sampler with dredge and orange-peel grab] Mar<br />

Riedl, R. (1958). An attempt to test the efficiency of ecological field<br />

methods and the validity of their results. In Perspectives in marine<br />

biology (ed. A.A. Buzzati-Traverso). Berkeley, Univ. of Calif. Press,<br />

57-65. [A short review of the literature] Mar<br />

Sander, G. (1957). Beitrag zur Genauigkeit der Bodengreifermethodik.<br />

(Contribution on the accuracy of the bottom-grab method) (In German).<br />

Z. Fisch. N.F. 6, 251. [Chiefly discusses the effects of different<br />

sieve sizes on the efficiency of removal of invertebrates from samples<br />

taken with a bottom grab] FW<br />

Seyb, S.M., Hammond, S.R. & Gilliard, T. (1977). A new device for<br />

recording the behaviour of a piston corer. Deep-Sea Res. 24, 943-950.<br />

[Describes an instrument package used to record the behaviour of piston<br />

corers during free-fall and penetration of the substratum] Mar<br />

Sly, P.G. (1969). Bottom sediment sampling. Proc. 12th Conf. Gt Lakes Res.<br />

883-898. [Compares the performance of the following samplers in<br />

lakes: Franklin-Anderson grab, Dietz-La Fond grab, Birge-Ekman Grab,<br />

Petersen grab, Ponar grab, Shipek grab, Benthos gravity corer, Alpine<br />

gravity corer, Phleger corer, 4 and 7-tubes multiple corers] FW<br />

Smith, K.L. & Howard, J.D. (1972). Comparison of a grab sampler and<br />

large volume corer. Limnol. Oceanogr. 17, 142-145. [Compares Smith-<br />

Mclntyre grab with box corer of Bouma & Marshall (1964), Rosfelder &<br />

Marshall (1967)] Mar<br />

Smith, W. & Mclntyre, A.D. (1954). A spring-loaded bottom sampler. J.<br />

mar. biol. Ass. U.K. 33, 257-264. [Compares new sampler with 0.1 m 2<br />

van Veen grab and 0.2 m 2 Petersen grab] Mar<br />

Stanczykowska, A. (1966). Some methodical problems in zoomicrobenthos<br />

studies. Ekol. pol. (A) 14, 385-393. [Compares Ekman grab and two<br />

corers of sampling areas 10 cm and 43 cm ] FW<br />

50

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