Algal Bloom : A Coastal Hazard

Harmful algae are microscopic, single-celled plants that live in the sea. Most species of algae or phytoplankton, usually, are not harmful. Rather they serve as the fundamental source of food for higher forms of life.

Unfortunately, a small number of species produce potent neurotoxins that can be transfered through the food web where they affect and even kill the higher forms of life such as zooplankton, shellfish, fish, birds, marine mammals, and even humans that feed either directly or indirectly on them. Such algae remain on the ocean floor or buried in the sediments in the form of cyst until favourable conditions. They germinate with warmer temperatures and increased light stimulation. Once hatched, they continue to divide and reproduce exponentially until favourable conditions. The hazardous conditions are noticed when these are consumed by the higher forms. During unfavourable conditions, the nutrients in the sea water, etc., get depleted, the growth stops and two gametes join to form one cell to go back on the ocean floor in dormant conditions.

Scientists now prefer the term, Harmful Algal Blooms (HAB), to refer to bloom phenomenon that contain toxins or that cause negative impacts.



Click here for recent data on Indian HAB’s, data courtesy Dr SR Bhat, National
Institute of Oceanography
, India

More political will needed here for mangrove protection – Stabroek News

<!–h1 class=”title”>More political will needed here for mangrove protection – Stabroek News</h1–><!–h1 class=”title”>More political will needed here for mangrove protection – Stabroek News</h1–> <!–span class=”taxonomy”></span–>Guyana has to show more political will in protecting mangroves for their habitat and environmental richness, a report by the Food and Agriculture Organisation (FAO) has said. The report, entitled, ‘The World’s Mangroves 1980 to 2005’, acknowledges that afforestation and reforestation activities have taken place in Guyana. But it says also that all South American countries with the exception of Guyana have at least one Ramsar mangrove site, indicating added political will to protect these habitats and their environmental richness.

<!–div class=”links”>» original article</div–>

Algal Bloom and Fish Kill On Florida Beach

<!–h1 class=”title”>Algal Bloom and Fish Kill On Florida Beach</h1–> <!–h1 class=”title”>Algal Bloom and Fish Kill On Florida Beach</h1–> <!–span class=”taxonomy”></span–>

Some city employees tried to prevent me from filming the effects of this Harmful Algal Bloom (HAB) at Houguenot Memorial Park, a beach east of Jacksonville, Florida. That’sa bit bizarre until you realize that attractive beaches (Google)
URL: http://bluevoiceviews.blogspot.com/

<!–div class=”links”>» original article</div–>

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About Rashid Faridi

I am Rashid Aziz Faridi ,Writer, Teacher and a Voracious Reader.
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