Predictability of streamflow and particulate organic matter concentration as indicators of stability in prairie streams
✍ Scribed by B. H. Hill; T. J. Gardner; O. F. Ekisola
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 667 KB
- Volume
- 242
- Category
- Article
- ISSN
- 1573-5141
No coin nor oath required. For personal study only.
✦ Synopsis
Predictability of stream discharge and particulate organic matter (POM) in the water column was estimated, using Colwell's indices of constancy and contingency, for 6 Texas prairie streams (1 each of 2nd, 3rd, and 4th order with intermittent or perennial discharge) . Stream discharge in these 6 prairie streams varied between 0 and 360001 s -', depending on the stream and season . Predictability (P) of discharge in these streams ranged from 0 .45 to 0 .62, within the range of values expected for North American streams . Predictability of stream discharge was not significantly different between streams . Particulate organic matter concentrations in these prairie streams are relatively low, ranging from 0 .25 to 4 .00 mg AFDM 1 -' . Predictability of POM concentration in these streams was high, ranging from 0.75 to 0 .85, and was largely the result of constancy of POM concentrations . Within the different POM size classes, Fine POM (FPOM) had the highest predictability (P = 0 .89-0 .96) . In spite of relatively unpredictable stream discharge, POM remained fairly constant providing a measure of habitat predictability and stability.