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A Comparison of Methods Used to Estimate River Rock Surface Areas.
- Source :
-
Journal of Freshwater Ecology . Jun2001, Vol. 16 Issue 2, p257-261. 5p. - Publication Year :
- 2001
-
Abstract
- Five methods for estimating the surface areas of river rocks were compared. True surface area was assumed to be estimated most accurately by wrapping the rock in a single layer of aluminum foil. Foil weight and tracing methods provided the closest estimates of true area. A volume displacement method was a poor estimator of area. A caliper method always underestimated true area, although the caliper method was fastest and could be completed in situ. Predictive relationships were established between true area and caliper method estimates for rocks from two rivers with distinctly different rocky substrates. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ROCK bass
*ALUMINUM foil
*RIVERS
*ALUMINUM
*METAL foils
*ESTIMATION theory
Subjects
Details
- Language :
- English
- ISSN :
- 02705060
- Volume :
- 16
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Freshwater Ecology
- Publication Type :
- Academic Journal
- Accession number :
- 19240148
- Full Text :
- https://doi.org/10.1080/02705060.2001.9663810