Information
Ecological parameter: IC CB-GIG ITEM score
Parameter group: trophy related parameters
Explanation:
The ITEM (Index of Trophy for European Macrophytes in Rivers) score provides information on the nutrient preference of a macrophyte species and thus provides information about the nutrient pollution (mainly phosphorous) of a river. The scale ranges from 1 (highly sensitive to nutrient pollution) to 10 (highly tolerant to nutrient pollution).
Birk, S., Willby, N., Chauvin, C., Coops, H.C., Denys, L., Galoux, D., Kolada, A., Pall, K., Pardo, I., Pot, R. & Stelzer, D. (2007): Report on the Central Baltic River GIG Macrophyte Intercalibration Exercise, 82 pp.
https://www.uni-due.de/imperia/md/content/aquatische_oekologie/e_cbrivgig_macrophytes_final_report_june-07-v2.pdf
Type of assignment: metric value (1 to 8.47)
A description of the coding system can be found here Abbreviations/Coding Systems
Abbreviations:
| Category name: | Abbreviations: | Explanation: |
|---|---|---|
| ITEM score (range: 1.00 - 8.47) | ITEM score |
| Taxagroup | Number of assigned taxa / total number of taxa - percentage |
|---|---|
| Bryopsida | 63 / 213 - 29.5% |
| Charophyceae | 14 / 52 - 26.9% |
| Liliopsida | 114 / 361 - 31.5% |
| Lycopsida | 1 / 12 - 8.3% |
| Magnoliopsida | 5 / 20 - 25% |
| Marchantiopsida | 34 / 62 - 54.8% |
| Polypodiopsida | 3 / 19 - 15.7% |
| Rosopsida | 109 / 399 - 27.3% |
| Sphenopsida | 3 / 9 - 33.3% |