Natural Heritage Information Centre

Southern Ontario Vegetation Communities: Aquatic

(Revised Jan. 1997)

System	Community Series		Ecosite (Common to Scientific Name Chart)	6E	7E	Global Rank	Provincial Rank
	I	II
Aquatic: Shallow to deep open water without emergent vegetation dominance (standing water always present)
	Lacustrine / Riverine
		Open Water		(X)	(X)	NA	S5
		Shallow Water
			Submerged Shallow Aquatic Ecosite
			Pondweed Submerged Shallow Aquatic Type	X	X	G5Q	S5
			Waterweed Submerged Shallow Aquatic Type	X	X	G5Q	S4S5
			Stonewort Submerged Shallow Aquatic Type	X	X	G5Q	S4S5
			Water Milfoil Submerged Shallow Aquatic Type	X	X	G?	S5
			Wild Celery Submerged Shallow Aquatic Type	X	(X)	G?	S4
			Water Marigold Submerged Shallow Aquatic Type	X	(X)	G?	S4
			Water Star-grass Submerged Shallow Aquatic Type	X	(X)	G5Q	S3S4
			Submerged - Floating-leaved Shallow Aquatic Ecosite
			Pickerel-weed Submerged - Floating-leaved Shallow Aquatic Type	X	X	G5	S5
			Duckweed Submerged - Floating-leaved Shallow Aquatic Type	X	(X)	G5Q	S5
			Watercress Submerged Shallow Aquatic Type	X	X	G5Q	S4
			Pondweed Submerged - Floating-leaved Shallow Aquatic Type	X	(X)	G5Q	S5
			Bur-reed Submerged - Floating-leaved Shallow Aquatic Type	X	(X)	G5Q	S5
			Bladderwort Submerged - Floating-leaved Shallow Aquatic Type	X	(X)	G5Q	S5
			Water-milfoil Submerged - Floating-leaved Shallow Aquatic Type	(X)	X	G?	S5
			Floating-leaved Shallow Aquatic Ecosite
			Water Lily - Bullhead Lily Floating-leaved Shallow Aquatic Type	X	X	G5	S5
			American Lotus Floating-leaved Shallow Aquatic Type		X	G5	S1
			Duckweed Floating-leaved Shallow Aquatic Type	X	X	G5Q	S5

Wetland: Lands that are seasonally or permanently flooded by shallow water as well as lands where the water table is close to the surface; in either case the presence of abundant water has caused the formation of hydric soils and has favoured the dominance of either hydrophytic or water tolerant plants

Terrestrial: All communities occurring on non-hydric soils