Publication
Title
On the reliability of Ponar grab samples for the quantitative study of benthic invertebrates in ponds
Author
Abstract
We present observations on the variability of sediment penetration depth by the Ponar grab sampler, which lead us to question the reliability of grab samples in the quantitative study of freshwater benthos. Penetration depth of the Petite Ponar grab depends on substrate type, and correlates with the amount of organic carbon, the water content and the granulometry of the sediment. Since these factors can also influence faunal composition and vertical distribution in the sediment, it is important to study the performance of the sampler before a biological explanation for the observed pattern is given. At the site studied, a case study was performed, in which variable grab penetration did not influence biological interpretation because the penetration depth of the grab followed that of the organisms under study.
Language
English
Source (journal)
Hydrobiologia. - The Hague
Publication
The Hague : 1995
ISSN
0018-8158
Volume/pages
312:3(1995), p. 147-152
ISI
A1995TL93600001
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 19.07.2012
Last edited 04.07.2017
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