Algae are small primitive plants that bear close resemblance to fungi. Algae are a normal part of a healthy environment, but they can grow excessively. These plants are commonly seen floating in the pond water. Algae does not have roots or leaves unlike most plants. They often absorb nutrients from the elements in the water, where they float in. Just like most plants, algae utilize the sunlight to grow.
There are many kinds of algae, like green, red, brown, and blue-green algae, and it is important to be familiar with them because most of them are harmless, but some blue-green algae (Lyngbya) can produce potent toxins. These toxins are produced inside the cells and stay there as long as the cells are alive. When cells die and break down, toxins can be released into the water. If animals drink from algae-infested water, they can ingest the toxins, which can poison and possibly kill them.
There are more than 17,300 algae species that have been discovered and possibly thousands more yet to be discovered. What are the different types of pond algae? Well, there are six different types of pond algae:
- Planktonic Algae
- Filamentus Algae
- Algae Diatoms
- String Algae
Planktonic algae are small microscopic plants, which tend to thrive on the surface of the water. This plant often changes the color of water pea soup to brown or green. On the other hand, planktonic algae can regulate the oxygen within your pond, hence if they die off, the fish might die too due to lack of sufficient oxygen. Some planktonic algae species are toxic to human beings, livestock or wildlife, other species can create an odor or change the taste of the water in the pond.
Filamentus algae also commonly known as pond moss or pond scum are a type of pond algae that thrives at the surface of the water and replaces the natural color of the water with a green mat-like plants on the top of the water. To be clear however, this plant often grows at the bottom of the pond, and as it ages, rises to the top surface. The individual pieces of filamentus algae are a thread-like series of connected cells.
Lyngbya (resistant algae)
Lyngbya algae is a type of blue green pond algae. Just like filamentus algae, this plant begins to develop at the bottom surface of the water pond and then grows toward the surface. When it reaches the surface of the pond, it can appear blue green, black or gray. It turns to sponge-like colonies, shielded by mucilage. Since mucilage is highly resistant to chemicals, Lyngbya is very difficult to remove from the ponds.
Pithopora (resistant algae)
Pithopora, also commonly known as horse hair pond algae, is a dark-green algae. This type of pond algae often grows in wide clumps that bear close resemblance to steel wool. The individual filaments consist of widespread branches. Pithopora algae have rapidly regenerating cells which make them grow more quickly. It also starts to develop at the bottom surface of the pond and ultimately grows up to the top surface.
The cell walls of this type of pond algae consist of silica; a mineral substance. Diatoms are brown or gray in color and typically grow in colonies. Unlike other types of pond algae that float in water, algae diatoms develop on solid surfaces.
String algae is a type of pond algae that grows in water bodies bordering other plants or rocks. They normally appear as long green hair. Although string algae are not hazardous, they can ruin the natural appearance of the water in the pond.