Knochensee Klein-Ostheim

C - medium to poor

19. April 2025

Habitat StructuresC

CriterionValue
Score charophyceaeC
Number of different typically formed accretion structures, such as swamp forest, willow bushes, reeds, etc. C

Species Inventory – Habitat TypicalC

CriterionValue
All stoneworts, higher water plants with a trophic index < 2.5 – see species table C

ImpairmentsC

CriterionValue
Impairment moderately pronounced, rough hornwort, bumpy water lentil-floating mats see species table A
Anthropogenic Influences on >25% of the surveyed area
Natural Shore Accretion absent on 10-50% of the shoreline
Lower macrophyte boundary C
(Lower Macrophyte Limit)
Lower Macrophyte Limit 1.5 Meter

Overall RatingC - medium to poor

Species
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Zerbrechliche Armleuchteralge

(Chara globularis)

1%

Type: Basic lawn

Berchtolds Zwerglaichkraut

(Potamogeton berchtoldii)

1%

Type: Basic lawn

Weiße Seerose

(Nymphaea alba)

2%

Type: Floating leaf lawn

Röhricht

(Phragmites australis)

Type: Shore vegetation