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H3140 - Hard oligo-mesotrophic waters with benthic vegetation of Chara spp h1. General
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| Section |
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| Column |
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| | Chart |
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| dataDisplay | true |
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| legend | false |
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| xlabel | %soil light penetration |
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| typedataOrientation | XYlinevertical |
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| title | Transparency water column |
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| dataOrientationtype | verticalXYline |
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| yLabel | HSI |
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| %light to the soil | HSI |
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0 | 0 | 1 | 0.2 | 2 | 0.5 | 3 | 1.0 | 100 | 1 |
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Transparency water column: here, a relative measure indicates the water transparency (transparency/depth), in which it is assumed that positive photosynthesis of water plants is not possible if transparency (Secchi) is roughly half the water depth, corresponding with a 3% light reduction to the soil. Soil light penetration is essential to Charales because of their low growth. |
| Column |
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| | Chart |
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| dataDisplay | true |
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| domainaxesUpperBound | 4 |
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| legend | false |
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| xlabel | depth (m) |
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| typedataOrientation | xylinevertical |
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| title | Water depth |
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| dataOrientationtype | verticalxyline |
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| yLabel | HSI |
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| depth (m) | HSI |
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0 | 0 | 0.3 | 1 | 3.0 | 1 | 3.5 | 0 | > 3.5 | 0 |
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Water depth: this relation is based on the deduction of the reference depth limit for aquatic plants to determine the “growable zone” (ref 2). The described maximum depth (in the figure indicated at 3m) is water type specific. |
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Please note that the model MACROMIJ uses a logistic response model. For more information on that topic, you can refer to the dose effect relation of Chara spp.
Uncertainty and validation
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