Similar results have been obtained for the aquatic fern Azolla filiculoides, which presented concentrations of lead approximately 620% higher in specimens exposed to solution containing 20 mg [L.sup.-1] lead for four days (Oren Benaroya et al., 2004) and for the terrestrial fern Athyrium yokoscense, which was found to accumulate 23000 mg [kg.sup.-1] of lead in gametophytes grown for three weeks in solutions containing 2 mg [L.sup.-1] Pb[(C[H.sub.3]COO).sub.2] (Kamachi et al., 2005).
Lead accumulation in the aquatic fern Azollafiliculoides.
This study indicates that the aquatic fern
Azolla filiculoides, which is widely available at a low cost, can be used as an efficient biosorbent material for the treatment of nickel and zinc ions in wastewater.
Early effects of decapitation on the [Mg.sup.++] - [K.sup.+], ATPase, and cation contents in lateral buds of the aquatic fern
Effects of five rice herbicides on growth of two threatened aquatic ferns
. Ecotoxicology and Environmental Safety, vol.
"In contrast, fresh leaves of the aquatic ferns Salvinia are superhydrophobic and superoleophilic, and can selectively absorb oil while repelling water.
Researchers at IMT have created a synthetic variation of these aquatic weeds that they call "nanofur." The synthetic version is designed to be superhydrophobic and superoleophilic, in addition to selectively absorbing oil and repelling water like the aquatic ferns. A nanofur is created by turning a hot rough plate into a polymer foil.
There are records of pyraloids feeding on aquatic ferns
of the family Salvinaceae, i.e.
Nutricional value of aquatic ferns
(Azolla filiculoides Lam.
Effects of five rice herbicides on the growth of two threatened aquatic ferns