Algal blooms are the result of a nutrient, like nitrogen or phosphorus from various sources (for example fertilizer runoff or other forms of nutrient pollution), entering the aquatic system and causing …

Sep 10, 2025 · A harmful algal bloom (HAB) occurs when toxin-producing algae grow excessively in a body of water. The excessive algal growth, or algal bloom, becomes visible to the naked eye and can …

Jan 9, 2024 · Harmful algal blooms are the rapid growth of algae or cyanobacteria in water that can harm people, animals, or the environment. Going in or near water with a harmful algal bloom can …

Jul 4, 2025 · Algal blooms are rapid growths or gatherings of algae in aquatic systems like lakes, rivers, or oceans. Depending on the algae, such blooms can cause red, brown, or blue pigmentation in the …

Apr 27, 2016 · Harmful algal blooms, or HABs, occur when colonies of algae — simple plants that live in the sea and freshwater — grow out of control and produce toxic or harmful effects on people, fish, …

Jul 19, 2025 · An algal bloom is a rapid increase in the population of algae in a body of water. Algal blooms are a natural part of the environment, but they have become more frequent and intense.

Jul 15, 2025 · This article discusses what harmful algal blooms (HABs) are and summarizes quick identification tips, water testing, and bloom control methods.

Jan 12, 2026 · Certain environmental conditions in water bodies can intensify algae growth, causing algal blooms. Blooms with the potential to harm human health or aquatic ecosystems are referred to …

Learn about different toxic or harmful algal species, and the poisoning syndromes they cause. See where harmful algae are distributed in the U.S. and around the world. Discover how harmful algal …

Apr 3, 2025 · Harmful algal blooms (HABs) are a significant environmental concern due to their potential effects on health, ecosystems, and economies. Algal toxins, which are toxic compounds produced by …