Information

Ecological parameter:  size class trophic score and indicator value

Parameter group: trophic preference parameters

Explanation:
Indicator values indicate the range of tolerance of a size class/MFG across the trophic spectrum: a low value indicates a high tolerance and, therefore, a poor indicator value. The opposite is true for a high indicator value. Trophic scores indicate the trophic preference of a size class/MFG: higher the values, higher the affinity for eutrophic waters.
Phillips, G., B. Skjelbred, G. Morabito, L. Carvalho, A. L. Solheim, T. Andersen, U. Mischke, C. de Hoyos, and G. Borics (2010): WISER Deliverable D3.1-1: Report on phytoplankton composition metrics, including a common metric approach for use in intercalibration by all GIGs.

Assigned taxa for each higher systematic unit
TaxagroupNumber of assigned taxa / total number of taxa - percentage
Bacillariophyceae222 / 557 - 39.8%
Bicosoecophyceae11 / 15 - 73.3%
Chlorophyceae279 / 481 - 58%
Choanoflagellata1 / 14 - 7.1%
Chrysophyceae116 / 165 - 70.3%
Conjugatophyceae209 / 270 - 77.4%
Cryptophyceae26 / 34 - 76.4%
Cyanophyceae178 / 277 - 64.2%
Dinophyceae48 / 74 - 64.8%
Euglenophyceae66 / 107 - 61.6%
Klebsormidiophyceae5 / 12 - 41.6%
Prasinophyceae3 / 13 - 23%
Prymnesiophyceae1 / 5 - 20%
Trebouxiophyceae11 / 16 - 68.7%
Xanthophyceae27 / 51 - 52.9%