f AY095469 Ceratophyllaceae Ceratophyllum
demersum is abundant on swamp sites but becomes progressively rarer on drier sites.
1c) was situated in the zone where Ceratophyllum
demersum, Ranunculus circinatus, and Potamogeton friesii Rupr.
Having stated this, it is important to note that Silver Lake contains some floristically significant taxa, such as Myriophyllum verticillatum and Ceratophyllum
Unit IX of Division B marks the disappearance of conifer and other remains of terrestrial origin and the appearance of Ceratophyllum
demersum (hornwort) leaves.
in Vallisneria (Arisz, 1960), Elodea, and Ceratophyllum
(Chandra et al.
Habitat: Lakes, in water up to 7 m (Voss 1972), in clear waters, often associated with Ceratophyllum
demersum, Najas flexilis, Potamogeton amplifolius, P.
Here the river bed is usually covered by submerged macrophytes, including Ceratophyllum
demersum, Myriophyllum sp.
Lake sediments were usually highly decomposed (sapric) but contained subfossils of submergent and emergent aquatic macrophytes such as Ceratophyllum
demersum, Najas flexilis, Potamogeton spp.
For instance, Ceratophyllum
plants protect themselves from herbivores by unidentified repellent substances (Bronmark, 1985), and aquatic plants of several genera--Lyonia, for example--produce effective hemolytic piscicides (Bhatt & Farswan, 1992).
Submergent macrophytes include Ceratophyllum
demersum and Potamogeton spp.
Mercury has been shown to be released from sediments and accumulated by plants like Ceratophyllum
demersum and Anodonta grandis (Hammer et al.