Algal bloom

Definition

An algal bloom is a rapid increase in the population of algae in aquatic systems, often recognizable by discoloration of the water. It can result from excess nutrients and may produce toxins.

5 Must Know Facts For Your Next Test

1. Algal blooms are typically caused by an excess of nutrients such as nitrogen and phosphorus.
2. Some algal blooms produce harmful toxins that can affect aquatic life and human health.
3. Eutrophication is a process that often leads to algal blooms due to nutrient runoff from agriculture or waste discharge.
4. Algal blooms can deplete oxygen in the water, leading to dead zones where aquatic life cannot survive.
5. Microscopic algae involved in blooms include both eukaryotic (like dinoflagellates) and prokaryotic (like cyanobacteria) species.

Review Questions

Related terms

Eutrophication:

The enrichment of water bodies with nutrients, leading to excessive growth of algae.

Dinoflagellates: A group of mostly marine single-celled organisms known for causing red tides.

Cyanobacteria:

Photosynthetic bacteria, also known as blue-green algae, which can form harmful algal blooms.