Drewitzer See

B - good

20. May 2023

Habitat StructuresB

CriterionValue
Score charophyceaeC
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 C
Anthropogenic Influences on >25% of the surveyed area
Natural Shore Accretion absent on <10% of the shoreline
Lower macrophyte boundary B
(Lower Macrophyte Limit)
Lower Macrophyte Limit 7.0 Meter

Overall RatingB - good

Species
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Zerbrechliche Armleuchteralge

(Chara globularis)

1%

Type: Basic lawn

Kanadische Wasserpest

(Elodea canadensis)

4%

Type: Submerged vegetation

Glanzleuchteralgen

(Nitella spec.)

1%

Type: Basic lawn

Faden-Grünalgen

(Vaucheria)

80%

Type: Basic lawn

Raues Hornblatt

(Ceratophyllum demersum)

1%

Type: Submerged vegetation

Ähriges Tausendblatt

(Myriophyllum spicatum)

1%

Type: Submerged vegetation

Stachelspitziges Laichkraut

(Potamogeton friesii)

1%

Type: Submerged vegetation

Spreizender Wasserhahnenfuß

(Ranunculus circinatus)

2%

Type: Submerged vegetation

Kamm-Laichkraut

(Stuckenia pectinata)

1%

Type: Submerged vegetation

Gewöhnliches Quellmoos

(Fontinalis antipyretica)

4%

Type: Floating mats

Weidengebüsch

(Salicion elaeagni)

Type: Shore vegetation

Röhricht

(Phragmites australis)

Type: Shore vegetation

Erlen-Bruchwald

(Alnetea glutinosae)

Type: Shore vegetation