Algae Types for Simple
Algae Treatment Information
To keep things easy with visual identification
for BioWorld Treatment purposes, use the following three classes:
1. Filamentous - appears as moss, mats
or stringy on the surface of the water, subsurface floating or on the
bottom. Can also be attached to rocks or plants in the water. Some are
slimy smooth while others feel like very course horse hair. Generally,
filamentous algae can be picked up by hand.
BioWorld has a 99% project success with
filamentous algae when enough product is used for the specific water
2. Planktonic - the water has a color of
green and the algae cannot be picked up by hand.
BioWorld has a 70% project success with
planktonic algae - many factors can dictate the success.
3. Water Weeds - plants that have a root
structure where the nutrients are acquired from the sediment in the
bottom of the water. When pulled by hand, the root is very apparent.
BioWorld is not designed for
rooted plants, duckweed, watermeal, or milfoil. Proper use of selective herbicides or mechanical removal are the
most common forms of control. The BioWorld treatment can be used in
conjunction with certain herbicides to get the best results.
Bacillariophyta. The diatoms are placed by the authors in
their own division, but others place them in the Family Bacillariophyceae:
( load an image of Asterionella ). These mostly microscopic
algae are unicellular, or filamentous
( colonial, such as Asterionella ), and typically have a
golden brown color; they compose the "pastures" of the
sea, carrying on much of the world's photosynthesis. Diatoms are
also common in lakes and streams, especially as part of the attached
community of algae ( periphyton ) that grows on submerged
rocks, logs, plants, and debris.
Chlorophyta. The grass-green
algae are mostly microscopic and may be unicellular ( Chlamydomonas
), filamentous ( Spirogyra ), or colonial ( Volvox, Scenedesmus
); some are also flagellated.
Pyrrophyta. This group of microscopic algae includes the dinoflagellates,
or peridinians, that are especially abundant in the ocean where
certain species comprise the deadly "red tides". The
armored Ceratium is a common freshwater form and its
spectacular shape makes it easy to identify in the plankton. Most
taxa are unicelluar ( Peridinium ), or small chains of cells;
all are flagellated. The "bioluminescence" often seen in
the wake of ocean ships is almost always due to dinoflagellates.
Cyanophyta. These prokaryotes, the
blue-greens, are microscopic and visible algae with no
plastids, primarily photoautotrophs; some assimilate organic
substances such as acetate and amino acids so these forms are
organotrophs. Some blue-greens can "fix" molecular
nitrogen converting it to usable nitrates. Blue-greens have been
considered "weed" species by many limnologists because
they can cause unpleasant growths in lakes where eutrophication
occurs. Lakes, for instance, that receive runoff of excess nitrogen
and phosphorus from the watershed because of domestic, agricultural,
and/or industrial pollution. Noxious "blooms" may occur of
such forms as Anabaena and Oscillatoria
( load from Cyanophyceae ).
are microscopic unicellular, or colonial forms common in lake
plankton. Common taxa include Dinobryon and Mallomonas
( load from Chrysophyceae ).
Euglenophyta. The euglenoids
are microscopic unicellular algae that are flagellated. This group
includes the common genus Euglena and Trachlemonas (
load from Euglenophyceae ). One unique feature of Euglena is
that it forms spores under unfavorable environmental conditions; Euglena
will form reddish spores that usually float on the surface as a
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