Table of Contents
What causes an algae bloom?
The development and proliferation of algal blooms likely result from a combination of environmental factors including available nutrients, temperature, sunlight, ecosystem disturbance (stable/mixing conditions, turbidity), hydrology (river flow and water storage levels) and the water chemistry (pH, conductivity.
What are algae blooms and why are they bad?
Cyanobacteria blooms—which form thick, green mats—can also wage ecological harm by making it difficult for aquatic life to thrive. For one, they can block sunlight for creatures below the water’s surface. They can also use up the oxygen needed by other life forms, creating oxygen-depleted “dead zones.”
What is bad about algae blooms?
Under the right conditions, algae may grow out of control — and a few of these “blooms” produce toxins that can kill fish, mammals and birds, and may cause human illness or even death in extreme cases. Collectively, these events are called harmful algal blooms, or HABs.
What is an algal bloom and what are its effects?
Excess nitrogen and phosphorus cause an overgrowth of algae in a short period of time, also called algae blooms. The overgrowth of algae consumes oxygen and blocks sunlight from underwater plants. When the algae eventually dies, the oxygen in the water is consumed.
Will algae bloom go away on its own?
A blue green algae bloom can also lie below the surface of the water. Blooms can spontaneously disappear or move to different parts of a pond or lake. However, some types of blue green algae produce toxins within their cells which are released when the cells die off or are ruptured.
How can we stop algae blooms?
Prevent Harmful Algal Blooms
- Properly identify HABs.
- Assess your water quality.
- Increase dissolved oxygen.
- Dispose of organic materials.
- Restore aging shorelines.
- Apply beneficial bacteria.
How can algae blooms be cleaned up?
Several ways can be done to control the occurrence of algae blooming in waters such as lakes, namely controlling the use of fertilizers, checking the septic system, not using a garburator, reducing the use of detergents, minimizing impervious surfaces close to the water where possible.
What causes plankton blooms?
More generally, a bloom can be considered as a phytoplankton population explosion-blooms occur when sunlight and nutrients are readily available to the plants, and they grow and reproduce to a point where they are so dense that their presence changes the color of the water in which they live.
Can you swim in algae bloom?
If you see a bloom, stay out of the water and keep your pets and livestock out of the water. You cannot tell if a bloom is harmful by looking at it, so it is best to use caution and stay away. Do not fish, swim, boat, or play water sports in areas where there is harmful algae or cyanobacteria.
Is algae bloom bad for fish?
Direct exposure to algae Harmful algal blooms sometimes create toxins that are detrimental to fish and other animals. After being consumed by small fish and shellfish, these toxins move up the food chain and can impact larger animals like sea lions, turtles, dolphins, birds and manatees.
Will an algae bloom hurt my fish?
These algae blooms are dangerous! Blue-green algae can also kill fish indirectly by causing oxygen levels to drop below the threshold for fish survival. This can be caused by exaggerated fluctuations in daily oxygen levels or by a sudden “crash” or die off of the bloom.