Algae Blooming: Murray Blue Green Algae
NSW Murray Regional Algal Coordinating Committee (MRACC) has provided all the valuable information of blue-green algae in the Blue-Green Algae Blooms Administration Web site. MRACC is a public services committee that serves the public, water users and Alaga organizations managing Gree blue in Murray River NSW.
This was the year 1878 when one of the first Australian toxic algal blooms blue-green was discovered in Lake Alexandria, South Australia.The reports of harmful algal blooms have been increased which are badly affecting the water use. In the summer of 1991-1992, the world's largest algal blooms occurred in the Barwon-Darling system. The range of this bloom was 1000 km poisionous in truly reported by the Blue-Green Algae Task Force 1992.
Algae are a paraphyletic and polyphyletic group of organisms. Are defined in different ways, but generally are considered to photosynthetic organisms except plants. Using the 'plant' in its most restrictive, then the algae are photosynthetic organisms except the group of brothers to Charales (ie, land plants). This definition allows inclusion of photosynthetic prokaryotes such as cyanobacteria. The definition used here is that the algae is that artificial subset of eukaryotic photosynthesis, which excludes the sister group of the Charales (land plants).
Algal Blooms – A proliferation of algae (http://www.murraybluegreenalgae.com/algalblooms.php) occurs when the number of algal cells increase usually rapidly to reach concentrations high enough to be visible to the naked eye. This reproduction of growth conditions require such as high levels of nutrients or light levels.
Many types of algal blooms form. Some of these flowers are harmless, but when the bodies of the flowering contain toxins or other harmful chemicals, or pathogens are known as harmful algal blooms, or HABs. HABs can cause fish kills and nearly ruin the nearby coast and produce harmful effects on marine life and humans.
Blue-green algae is the common name various types of algae. They are actually bacteria (cyanobacteria) that are capable of photosynthesis, hence the green. Cyanobacteria are bacteria that grow in water and are photosynthetic (use sunlight to create food and support life). Cyanobacteria live in terrestrial water, fresh, brackish or seawater. They are usually too small to be seen, but sometimes can form visible colonies. Cyanobacteria have been found among the oldest fossils of land and are one of the largest groups of bacteria. Cyanobacteria have been linked to human and animal diseases worldwide, including North and South America, Africa, Australia, Europe, Scandinavia and China. Cyanobacteria are the most common, but not the only group of HAB algae form.
Some cyanobacterial blooms can look like foam, foam, or mats on the surface of freshwater lakes and ponds. Flowers can be blue, bright green, brown, red oy may seem like paint floating on the water. Some flowers can not affect the appearance of water. As algae in a given Bloom of cyanobacteria, the water may smell bad.
Hazards of Harmful Algal Blooms
1. Spoil water quality when present in large number of producers of odor or thick foam.
2. They can do that the odor of drinking water and bad taste.
3. They can make recreational areas unpleasant.
4. Flores dense can block sunlight killing other plants and animals.
5. When algae decompose they may use the oxygen in the water and cause fish kills.
6. Cyanobacteria can produce toxins that are among the most potent natural poisons known. Toxins are poisonous to humans and can be fatal to livestock and pets.
7. CyanoHABs can make people, their pets and other animals sick. Often the first sign that an HAB there is a sick dog who has been swimming in a pond full of algae. Young children are at greater risk than adults CyanoHABs disease because they weigh less and can achieve a relatively higher dose of the toxin.
Safety Precautions
We can protect ourselves ourselves, our family and our pets from exposure to harmful algal blooms, following the instructions under: —
1) Avoid swimming, skiing water, or boat in areas where water is discolored or where you see foam, foam, or mats of algae in the water.
2) If you do swim in water that have a HAB, rinse with fresh water as soon as possible.
3) Do not let pets or livestock swim or drink in areas where water is discolored or where see the foam, foam, or mats of algae in the water.
4) If pets (especially dogs) swim in dirty water, rinse immediately, do not let them lick the algae (and toxins) off their skin.
5) No watering lawns and golf courses with pond water that looks scummy or smells bad.
6) Report any "musty" smell or taste in drinking water to local water service.
7) Respect any water body closure announced by the local public health authorities.
Prevention
The proliferation of algae can be prevented in the following ways: —
1) Algae need three things for optimal growth: light, nutrients and high temperatures. Therefore, by reducing nutrients, light and temperature available to blue-green algae in the water supply will help reduce the growth algae. The rate at which water is flowing and mixing is important in controlling the availability of light and nutrients to the cells of algae.
Livestock breeding 2) away from the farm dam or water supply.
3) Avoiding runoff in the water supply of fertilizers and pesticides
4) Taking a few steps before a flower water treatment begins, and whether the practice – changing patterns of mixing or covering the dam / water supply to the inlet screen Light can help.
For more information about the visit of algal blooms: http://www.murraybluegreenalgae.com/algae-blooming.php
About the Author
Michael Hitchcock is the director of Regional Algal Committee (http://www.murraybluegreenalgae.com ) a non profit organization. He frequently participages in local as well as international forums to bring awareness of algal issues to the public. He can be reached at mike@murraybluegreenalgae.com .
Blue in Green by. Miles Davis
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