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You are here: Home / Archives for algae

Algal Bloom Keeps Spreading

June 30, 2016 By Tom Hager Leave a Comment

Blue-green algae in a river.

Toxic algae spreads in lake waters.

The threat of the algal bloom continues as the waters around St. Lucie and Martin Counties have recently been infested with this parasite.

Governor Rick Scott has already taken active measures to prevent the toxic blue-green algae from spreading further through the Caloosahatchee and St. Lucie estuaries. Officials intend to redirect the flow of water in and out of Lake Okeechobee in order to deal with the algal bloom.

Toxic blue-green algae thrive in warmer waters, especially during summer. This parasite consumes a high level of oxygen, so its presence might cause ‘death zones,’ an area in the water where the level of oxygen is critically low, leading to the death of many fish and other animals.

Experts underline that the level of phosphorus in the water usually leads to a dangerous spread of toxic blue-green algae. Officials strongly recommend people to stay away from the infested waters, especially children as they are most vulnerable.

These algae can cause skin rashes and other symptoms. Pets are most likely to die if they swim in these waters, more precisely dogs. When dogs swim, they swallow a large quantity of water, so they are most likely to ingest the toxic algae and then die.

The Florida Fish and Wildlife Conservation Commission (FWC) and the Florida Department of Environmental Protection (DEP) are expected to come up with an efficient strategy to tackle this issue and to make the waters of the lake safe and clean once again.

The lake waters need to be tested for toxins first so that scientists can establish how critical the situation is. By declaring a state of emergency in Martin County, officials have now more time to develop a plan to prevent the spread of the algal bloom.

Some officials confessed that they need the opinion of the experts as they are most qualified to tackle these kinds of situations. For the countermeasures to be effective, officials need a large force of people including volunteers and more employees.

A more generous investment is required as well to develop anti-toxic algae projects. In other parts of the world, the spread of the blue-green algae is usually stopped by a sudden weather event or by a temperature drop off.

In this case, officials need to deal on their own with the algal bloom which transformed the lake waters into a possible threat for every living creature.

Image Source:Wikipedia

Filed Under: Science Tagged With: algae, algal, algal bloom, Algal Bloom Keeps Spreading, bloom, blue-green algae, green, toxic algae

Pink Snow Is A Bad Sign

June 28, 2016 By Tom Hager Leave a Comment

Pink snow seen during sunset.

Pink snow melts faster.

A recent phenomenon, known as the pink snow has occurred in the Arctic and even if it appears to be quite interesting and beautiful, it is, in fact, a reason for concern.

Scientists have discovered that the watermelon color of the snow comes from algae living under the snow. This type of red algae led to a massive ice melting around those areas.

Experts have not found a leading cause of this algal bloom yet, but they suspect that it might be related to climate change. Sudden weather changes have led to an imbalance in the world’s ecosystem. This imbalance manifests differently depending on the environment.

For example, the ocean ecosystem suffers from the worst coral bleaching ever recorded in history, and blue-green algae have already affected many water regions and lakes as well. Furthermore, wildfires have taken their toll on many forests, whereas bees, monarchs, and other pollinators have suffered a massive decline over the last few years.

The red algae are usually found in cold environments, such as Greenland, Iceland, Alps, and Antarctica. The red algal bloom increases the melting process up to 13 percent by changing the color of the glacier surface. Glaciers keep the earth surface cool by reflecting the sunlight. They have a unique feature, known as the albedo effect which helps them reflect the sunlight easier.

As the red algae blooms, the albedo effect decreases leading to a faster melting of the glacier. According to Steffi Lutz, lead author from the University of Leeds, the red algae needs water in order to spread, so as long as there is plenty of snow, the algal bloom will continue infesting the glaciers.

Because climate change continues, scientists believe that the red algal bloom is far from being over. Worse, if the ice keeps melting there will be a higher amount of water which will be the ideal environment for the red algae spread.

In other words, we have no reason to enjoy the pink snow. If scientists found a way to stop the ice from melting, then the algal bloom will cease as well. This type of red algae needs liquid water to thrive. The statistics showed that snow consists of more than 30 percent of the surface of the earth every year.

This percentage drops off only during spring and summer providing the ideal environment for the red algae to take its toll on the glaciers leading to a pink snow.

Image Source: Pixabay

Filed Under: Science Tagged With: algae, pink, pink snow, Pink Snow Is A Bad Sign, red, red algae, red algae in snow, red snow, snow

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