Drewitzer See

B - good

26. October 2025

Habitat StructuresB

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

Species Inventory – Habitat TypicalA

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

ImpairmentsC

CriterionValue
Impairment moderately pronounced, rough hornwort, bumpy water lentil-floating mats see species table C
Anthropogenic Influences on >25% of the surveyed area
Natural Shore Accretion absent on <10% of the shoreline
Lower macrophyte boundary A
(Lower Macrophyte Limit)
Shallow Water Macrophyte Limit 6.3 Meter
Middle Macrophyte Limit 10.9 Meter
Lower Macrophyte Limit 15.0 Meter

Overall RatingB - good

Species
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Zerbrechliche Armleuchteralge

(Chara globularis)

2%

Type: Basic lawn

Gewöhnliche Armleuchteralge

(Chara vulgaris)

1%

Type: Basic lawn

Stern-Armleuchteralge

(Nitellopsis obtusa)

1%

Type: Basic lawn

Faden-Grünalgen

(Vaucheria)

23%

Type: Basic lawn

Raues Hornblatt

(Ceratophyllum demersum)

6%

Type: Submerged vegetation

Nuttalls Wasserpest / Schmalblättrige Wasserpest

(Elodea nuttallii)

17%

Type: Submerged vegetation

Ähriges Tausendblatt

(Myriophyllum spicatum)

2%

Type: Submerged vegetation

Spiegelndes Laichkraut

(Potamogeton lucens)

1%

Type: Submerged vegetation

Durchwachsenes Laichkraut

(Potamogeton perfoliatus)

7%

Type: Submerged vegetation

Spreizender Wasserhahnenfuß

(Ranunculus circinatus)

2%

Type: Submerged vegetation

Krebsschere (untergetaucht)

(Stratiotes aloides submers)

1%

Type: Submerged vegetation

Kamm-Laichkraut

(Stuckenia pectinata)

3%

Type: Submerged vegetation

Weidengebüsch

(Salicion elaeagni)

Type: Shore vegetation

Röhricht

(Phragmites australis)

Type: Shore vegetation

Erlen-Bruchwald

(Alnetea glutinosae)

Type: Shore vegetation