The determination of limestone surface area by linear regression
An accurate procedure is described to determine rapidly and conveniently the surface area of individual pieces of limestone when estimating benthic macroinvertebrate densities. Based on population samples of 60 limestone and 60 traprock fragments, the authors derived r2 values in their regressions of volume and weight against surface area of 0.909 and 0.939 and 0.84 and 0.76, respectively. Estimates of limestone surface area by these methods yielded error estimates of 4.2% and 3.6%, equal to or superior to any method reviewed.
Key wordssurface area substrate limestone weight volume regression
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