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8. EFFICIENCIES AND COMPARISONS<br />

8<br />

Xarefjord, F. (1972). The use of an air-lift in freshwater bottom<br />

sampling. A comparison with the Ekman bottom sampler. Verh. int.<br />

Verein. theor. angew. Limnol. 18, 701-5. [Compares air-lift sampler<br />

and Ekman grab; air-lift more efficient] FW<br />

Albrecht, M.L. (1961). Ein Vergleich quantitativer Methoden zur Untersuchung<br />

der Makrofauna flieBender Gewasser. (A comparison of quantitative<br />

methods for investigating the macrofauna of flowing water) (In<br />

German). Verh. int. Verein. theor. angew. Limnol. 14, 486-490.<br />

[Compares hand-net collecting of 10 stones, Surber-sampler, and Macan<br />

shovel sampler in shallow stony streams] FW<br />

Alm, G. (1922). Uber die Prinzipien der quantitativen Bodenfaunistik und<br />

ihre Bedeutung fur die Fischerei. (On the principles of quantitative<br />

studies of the bottom fauna and its significance for fisheries) (In<br />

German). Verh. int. Verein. theor. angew. Limnol. 1, 168-180.<br />

[Discusses the defects of a Birge-Ekman grab] FW<br />

Armitage, P.D., MacHale, A.M. & Crisp, D.C. (1974). A survey of stream<br />

invertebrates in the Cow Green basin (Upper Teesdale) before inundation.<br />

Freshwat. Biol. 4, 369-398. [Compares kick-sample catches in pond<br />

net with samples taken with shovel sampler of Macan (1958)] FW<br />

Baird, R.H. (1959). Factors affecting the efficiency of dredges, pp.<br />

222-4. In Modern fishing gear of the world (Ed. H. Kristjonsson).<br />

London. Fishing News (Books) Ltd. 607 pp. [Briefly discusses the<br />

various factors that determine the efficiency of a dredge] Mar<br />

Baker, J.H., Kimball, K.T. & Bedinger, C.A. Jr. (1977). Comparison of<br />

benthic sampling procedures: Petersen grab vs. Mackin corer. Wat. Res.<br />

11, 597-601. [Mackin corer found to be more efficient] FW<br />

Baker, J.H., Pugh, L.A. & Kimball, K.T. (1977). A simple hand corer for<br />

shallow water sampling. Chesapeake Sci. 18, 232-236. [Compares their<br />

hand corer with Mackin corer] FW<br />

Beeton, A.M., Carr, J.F. & Hiltunen, J.K. (1965). Sampling efficiencies<br />

of three kinds of dredges in Southern Lake Michigan. Proc. 8th Conf.<br />

Gt Lakes Res., 209. [Compares efficiencies of the Petersen, orangepeel<br />

and Smith-Mclntyre grabs; Smith-Mclntyre took more species and<br />

more animals] FW<br />

Beukema, J.J. (1974). The efficiency of the van Veen grab compared with<br />

the Reineck box sampler. J. Cons. perm. int. Explor. Mer 35, 319-327.<br />

[Compares van Veen grab and Reineck box corer in marine sands]<br />

Mar.<br />

Birkett, L. (1958). A basis for comparing grabs. J. Cons. perm. int.<br />

Explor. Mer 23, 202-7. [Compares Petersen and van Veen grabs and<br />

develops index of digging efficiency] Mar<br />

Brinkhurst, R.O., Chua, K.E. & Batoosingh, E. (1969). Modifications in<br />

sampling procedures as applied to studies on the bacteria and<br />

tubificid oligochaetes inhabiting aquatic sediments. J. Fish. Res. Bd<br />

Can. 26, 2581-93. [Compares Kajak-Brinkhurst corer with Ekman grab,<br />

and Freshwater Biological Association corer with Ekman grab; concludes<br />

that K-B corer is the best] FW<br />

45

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