Lenzener See

C - medium to poor

13. April 2026

Habitat StructuresB

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

Species Inventory – Habitat TypicalB

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

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% of the shoreline
Lower macrophyte boundary C
(Lower Macrophyte Limit)
Middle Macrophyte Limit 2.8 Meter
Lower Macrophyte Limit 3.3 Meter

Overall RatingC - medium to poor

Species
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Gegensätzliche Armleuchteralge

(Chara contraria)

3%

Type: Basic lawn

Hornblättrige Armleuchteralge

(Chara tomentosa)

45%

Type: Basic lawn

Faden-Grünalgen

(Vaucheria)

2%

Type: Basic lawn

Ähriges Tausendblatt

(Myriophyllum spicatum)

2%

Type: Submerged vegetation

Weiße Seerose

(Nymphaea alba)

4%

Type: Floating leaf lawn

Weidengebüsch

(Salicion elaeagni)

Type: Shore vegetation

Röhricht

(Phragmites australis)

Type: Shore vegetation

Erlen-Bruchwald

(Alnetea glutinosae)

Type: Shore vegetation