harmful algal blooms (hab s ). what are harmful algal blooms (habs)? harmful algal blooms or habs...

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  • Slide 1
  • HARMFUL ALGAL BLOOMS (HAB S )
  • Slide 2
  • What are Harmful Algal Blooms (HABs)? Harmful algal blooms or HABs are algal blooms composed of phytoplankton known to naturally produce biotoxins, they can occur when certain types of microscopic algae grow quickly in water, forming visible patches that may harm the health of the environment, plants, or animals. HABs can deplete the oxygen and block the sunlight that other organisms need to live, and some HAB-causing algae release toxins that are dangerous to animals and humans. HAB can occur in marine, estuarine, and fresh waters. www.marbef.org/wiki/harmful_algal_bloom
  • Slide 3
  • What causes HABs? Eutrophication Warm temperatures Lots of sunlight Runoff Farming Human sewage Pesticides
  • Slide 4
  • http://www.miseagrant.umich.edu/files/2012/05/Harmful-Algal-Bloom-illustration-1000w.jpg
  • Slide 5
  • Nitrogen Cycle http://www.physicalgeography.net/fundamentals/images/nitrogencycle.jpg
  • Slide 6
  • Phosphorous Cycle http://media1.shmoop.com/images/biology/biobook_eco_13.png
  • Slide 7
  • http://products.coastalscience.noaa.gov/pmn/_images/habdiagramlg.gif
  • Slide 8
  • HABs in the United States http://www.whoi.edu/redtide/regions/us-distribution
  • Slide 9
  • http://www. whoi.edu/red tide/page.do ?pid=18116& tid=542&cid= 55970&ct=61 &article=330 66
  • Slide 10
  • http://www. whoi.edu/red tide/page.do ?pid=18116& tid=542&cid= 55970&ct=61 &article=330 66
  • Slide 11
  • Toxic Diatom and Dinoflagellate HABs Diatoms ASP: Amnesic Shellfish Poisoning Dinoflagellate PSP: Paralytic Shellfish Poisoning NSP: Neurotoxic Shellfish Poisoning CFP: Ciguatera Fish Poisoning DSP: Diarrhetic Shellfish Poisoning www.whoi.edu/science/B/redtide/illness/illness.html http://www.whoi.edu/redtide/photos
  • Slide 12
  • PSP: Paralytic Shellfish Poisoning
  • Slide 13
  • CFP: Ciguatera Fish Poisoning
  • Slide 14
  • DSP: Diarrhetic Shellfish Poisoning
  • Slide 15
  • Impact of HABs on us! Food poisoning Inner ear infections No swimming at beaches/lakes/rivers Economic impacts Fisheries Tourism Others?

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