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Abstract:

Eighty-seven freshwater plankton samples collected by means of two different nets, a submersible centrifugal pump and a 5.81 water bottle were compared with respect to their ability to catch the rotifer Keratella cochlearis. Sample size, illumination (day/night), the presence of bridles ahead of the net mouths (versus unbridled nets), and different mouth diameters (0.2 and 0.5 m) did not affect abundance estimates. Slight differences were found between the yields of pushed nets versus towed nets; these are probably due to uneven distribution of the animals in the 0-3 m layer. Both pump and bottle volumes strongly affected abundance estimates (K. cochlearisl-1 in pump samples=164.84 volume of water filtered-0 817; K. cochlearisl-1 in bottle samples=84.74+2336.6 volume of water filtered-1) Net sample results were always considerably higher (4.6-12.3 times) than pump and bottle estimates; these differences are most probably due to evading reactions of the rotifer. © 1985 IRL Press Limited.

Registro:

Documento: Artículo
Título:Effects of net, pump and bottle sampling on the abundance estimates of planktonic Rotifera
Autor:Boltovskoy, D.; Pedrozo, F.L.; Mazzoni, H.E.; Díaz, M.
Filiación:Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
CECOAL, Casilla de Correo 291, 3400 Corrientes, Argentina
Año:1985
Volumen:7
Número:2
Página de inicio:295
Página de fin:302
DOI: http://dx.doi.org/10.1093/plankt/7.2.295
Título revista:Journal of Plankton Research
Título revista abreviado:J. Plankton Res.
ISSN:01427873
CODEN:JPLRD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01427873_v7_n2_p295_Boltovskoy

Referencias:

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  • Boltovskoy, D., Several articles in Boltovskoy.D. (ed.), Atlas del zooplancton del Atldntico Sudoccidental y mitodos de trabajo con el zooplancton marino (1981) Publ. Esp. Inst. Nac. Inv. Des. Pesq., Mar. Del Plata, pp. 15-35, 53-58, 67-100
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Citas:

---------- APA ----------
Boltovskoy, D., Pedrozo, F.L., Mazzoni, H.E. & Díaz, M. (1985) . Effects of net, pump and bottle sampling on the abundance estimates of planktonic Rotifera. Journal of Plankton Research, 7(2), 295-302.
http://dx.doi.org/10.1093/plankt/7.2.295
---------- CHICAGO ----------
Boltovskoy, D., Pedrozo, F.L., Mazzoni, H.E., Díaz, M. "Effects of net, pump and bottle sampling on the abundance estimates of planktonic Rotifera" . Journal of Plankton Research 7, no. 2 (1985) : 295-302.
http://dx.doi.org/10.1093/plankt/7.2.295
---------- MLA ----------
Boltovskoy, D., Pedrozo, F.L., Mazzoni, H.E., Díaz, M. "Effects of net, pump and bottle sampling on the abundance estimates of planktonic Rotifera" . Journal of Plankton Research, vol. 7, no. 2, 1985, pp. 295-302.
http://dx.doi.org/10.1093/plankt/7.2.295
---------- VANCOUVER ----------
Boltovskoy, D., Pedrozo, F.L., Mazzoni, H.E., Díaz, M. Effects of net, pump and bottle sampling on the abundance estimates of planktonic Rotifera. J. Plankton Res. 1985;7(2):295-302.
http://dx.doi.org/10.1093/plankt/7.2.295