Dive

Drewitzer See

B - good

25. October 2023

Habitat StructuresB

Criterion	Value
Score charophyceae	B
Number of different typically formed accretion structures, such as swamp forest, willow bushes, reeds, etc.	A

Species Inventory – Habitat TypicalA

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

ImpairmentsC

Criterion	Value
Impairment moderately pronounced, rough hornwort, bumpy water lentil-floating mats see species table	C
Anthropogenic Influences	on 10-25% of the surveyed area
Natural Shore Accretion	absent on <10% of the shoreline
Lower macrophyte boundary	B (Lower Macrophyte Limit)
Lower Macrophyte Limit	7.9 Meter

Overall RatingB - good

Species

Zerbrechliche Armleuchteralge

(Chara globularis)

20%

Type: Basic lawn

Hornblättrige Armleuchteralge

(Chara tomentosa)

Type: Basic lawn

Kanadische Wasserpest

(Elodea canadensis)

20%

Type: Submerged vegetation

Stern-Armleuchteralge

(Nitellopsis obtusa)

Type: Basic lawn

Raues Hornblatt

(Ceratophyllum demersum)

20%

Type: Submerged vegetation

Wechselblütiges Tausendblatt

(Myriophyllum alterniflorum)

20%

Type: Submerged vegetation

Ähriges Tausendblatt

(Myriophyllum spicatum)

Type: Submerged vegetation

Quirliges Tausendblatt

(Myriophyllum verticillatum)

Type: Submerged vegetation

Krauses Laichkraut

(Potamogeton crispus)

Type: Submerged vegetation

Stachelspitziges Laichkraut

(Potamogeton friesii)

Type: Submerged vegetation

Durchwachsenes Laichkraut

(Potamogeton perfoliatus)

Type: Submerged vegetation

Spreizender Wasserhahnenfuß

(Ranunculus circinatus)

Type: Submerged vegetation

Krebsschere (untergetaucht)

(Stratiotes aloides submers)

20%

Type: Submerged vegetation

Kamm-Laichkraut

(Stuckenia pectinata)

Type: Submerged vegetation

Weiße Seerose

(Nymphaea alba)

Type: Floating leaf lawn

Weidengebüsch

(Salicion elaeagni)

Type: Shore vegetation

Röhricht

(Phragmites australis)

Type: Shore vegetation

Erlen-Bruchwald

(Alnetea glutinosae)

Type: Shore vegetation