Spatial variability and collector requirements for sampling throughfall volume and chemistry under a mixed-hardwood canopy
Canadian Journal of Forest Research
By: L.J. Puckett
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Abstract
Ion concentrations were generally less variable within storms compared with net ion input data. Concentrations and net inputs of some ions were consistently less variable than others; for example, Ca2+, NO3-, and SO42- were less variable than NH4 + and K+. These patterns of variability were consistent in comparisons both within and among storms. The relatively low variability of NO3- and SO42- is probably due to dry deposition of these ions as anthropogenic pollutants, while the low variability of Ca2+ is the result of deposition in windblown soil particles. The high variability of NH4+ and K+ is probably the result of biological processes. Ammonium is strongly retained by the canopy, and K+ is readily leached from it. Retention by, and leaching from, the canopy can induce spatial variability as a result of spatial heterogeneity in the biota. Throughfall volume also displayed low variability within and among events, requiring an average of 11 collectors to estimate the mean within 10% at the 95% confidence level. -from Author
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Spatial variability and collector requirements for sampling throughfall volume and chemistry under a mixed-hardwood canopy |
| Series title | Canadian Journal of Forest Research |
| Volume | 21 |
| Issue | 11 |
| Year Published | 1991 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Canadian Journal of Forest Research |
| First page | 1581 |
| Last page | 1588 |
| Google Analytic Metrics | Metrics page |