Harmful Algae

Abstract The purpose of this semester paper is to provide information on various kinds of algae breeding and their impact on our environment and ourselves. There are many unknown things about algae breeding, and various assumptions have been made to explain them. Throughout the process, these assumptions are presented and discussed, allowing readers to draw their own views on the origins of algal origin and what will happen in the future.

For more than 50 years, scientists have noticed that harmful or harmful cyanobacteria (pale green algae), freshwater lakes, reservoirs and most common harmful algae in a slowly flowing river are stimulated by P concentration Is recognized. ) These organisms can form a moist moisture mat with a thickness of about 1 m, a cell number of 1 billion ml 21 and a chlorophyll a (chl; algal biomass index) decaying up to l 21 with a maximum of 3,000 mg Zohary and Rob-1989). Many species, including powerful hepatotoxins and neurotoxins that cause the death of domestic animals and wildlife in most countries around the world produce biologically active compounds (Skulberg et al. 1993; Codd et al. 1997), so much Not human death (Chorus Bertram 1999)

Algae including phytoplankton (or microscopic floating plants) are an important part of any aquatic ecosystem, green algae as a food base for microscopic animals (zooplankton) and some fish It works. Harmful algae, including cyanobacteria or "blue-green algae", are undesirable foods for zooplankton and fish, and harmful chemicals that threaten other organisms in water. Conditions that cause HAB are nutrients, especially phosphorus and nitrogen, warm temperatures, plenty of sunlight, and gentle water. All kinds of algae require nutrients to survive, and excessive levels of nutrients lead to mass breeding. The main causes of nutrient contamination in our bodies are agricultural causes such as inorganic fertilizer and runoff, and point sources, especially sewage treatment plants. The study showed that reducing nutrient input to water is important to reduce the incidence of HAB