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HABs Public Service Announcement

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Rachael Chesnover

on 12 February 2013

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Transcript of HABs Public Service Announcement

Why do HABs occur? What is a HAB? HAB stands for Harmful Algal Bloom
Microscopic, single-celled plant that lives in the sea
Prolific phytoplankton
Includes microalgae and macroalgae
Produces toxins leading to disease and death in land and marine life What are some harmful
effects of HABs? How do humans influence HABs? What can be done to control HABs? Public Service Announcement Beware of HABs! Harmful Algal Blooms along the west coast of South Africa Presented by Brooke Boers
Andrew McBride
Rachael Chesnover HABs can occur because extremely high temperatures, extreme weather conditions and favorable wind and water currents.
HABs occur when colonies of algae grow out of control while producing toxic or harmful effects on people, fish, shellfish, marine mammals and birds.
HABs can also occur by 'overfeeding' (when nutrients (mainly phosphorus, nitrogen, and carbon) from sources such as lawns and farmlands flow as runoff to waterways and 'overfeeds' the regular algae. Harmful effects include:
Extreme weather events
Sickness and breathing problems in organisms
Economic loss
Tourism decrease
Marine and land organism fatality
Hypoxia (oxygen deficiency)
Various types of poisoning Humans can also influence HABs by way of:
Food web alterations
Introduction of new species into environment
Waterflow modifications
Sources http://www.whoi.edu/science/B/redtide/whathabs/whathabs.html





http://www.science-house.org/nesdis/algae/background.html Various Types of Poisoning Includes: Ciguatera fish poisoning
Neurotoxic shellfish poisoning
Paraltyic shellfish poisoning
Diarrheic shellfish poisoning
Amnesic shellfish poisoning NOAA scientists conduct research prevent, control, and mitigate HABs.
These scientists are now able to forecast the location of the blooms; they are then able to give communities inhabiting the coasts advance warning, so they can prepare and deal with the consequences of the HABs.
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