Mesoamerican Barrier R eef

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Mesoamerican Barrier R eef. By: Darcee Stock. As defined by the New Oxford American Dictionary, overfishing is the depletion of the stock of fish in a body of water by too much fishing. What is overfishing?. - PowerPoint PPT Presentation

Transcript of Mesoamerican Barrier R eef

Mesoamerican barrier reef

Mesoamerican Barrier ReefBy: Darcee Stock

What is overfishing?As defined by the New Oxford American Dictionary, overfishing is the depletion of the stock of fish in a body of water by too much fishing

Overfishing in BelizeSince back to the Mayans, Belize has been of great importance to fishermen seeing how the Mesoamerican reef has been plentiful with fish (Belize: A Path to Sustainable Fishing , 2010)The marine biodiversity is being threaten by illegal fishing and overfishingThe quickly declining number of fish population could affect the entire reef and lead to an ecological collapse

The Queen ConchOverfishing and illegal fishing has greatly reduced stocks of grouper and snapper Belize fishermen have gone to lobsters and queen conchs (Belize: A Path to Sustainable Fishing , 2010)From 1972 to 2006, the conch catch has fallen from 1.2 million pounds to 699,000 pounds

Why overfishing is an issueAs mentioned before, overfishing affects the whole biodiversity of the reefAs well, fish itself provides many people with food less fish = less food Coral and zooxanthellae

Coral and zooxanthellae (a marine algae) have formed a symbiotic relationship in which zooxanthellae gives their extra food to the coral which evidently provides the coral with energy (What is Coral Bleaching)When coral expels zooxanthellae, the photosynthetic pigments of the zooxanthellae which gives coral its colour evidently leaves the coral as well which causes the corals white skeleton to be revealed this is called coral bleaching

What causes it coral bleaching?The primary cause of coral bleaching, and what most effects the coral of the Mesoamerican Reef, is high water temperatures (What is Coral Bleaching)Water that rises a few degrees for a month or so is enough to trigger coral bleachingWith global warming, it is not a surprise that coral bleaching is happening more and more frequently

Why coral bleaching is a problemSince most corals need the food provided from the zooxanthellae, without them they begin to starve (What is Coral Bleaching)If conditions return to the way they were before, corals can regain their zooxanthellae and recover but the stress can cause problems with their growth and their reproductionIf they do not regain their zooxanthellae or there is too much stress, the coral can die

Mesoamerican Reef and coral bleachingIn 1998, a mass coral bleaching caused a great deal of coral death on the Mesoamerican Reef (Annie Reisewitz)Research showed that in areas where the water was clean and where there was less human activity, coral was able to recover much quicker then those corals affected by said things

WWF and the Mesoamerican reefOne organization that is trying to help save the Mesoamerican reef is the WWF (World Wildlife Fund)Although they are doing multiple projects, one thing they are doing in particular is promoting sustainable fisheries (Projects - Promoting Sustainable Fisheries , 2011)Through this, they are teaching local fishermen (all along the reef) about ecosystem-based fishing practicesAs well, in Turneffe Atoll, they are working to protect the spawning of grouper and snapper

BibliographyWhat is Coral Bleaching. (n.d.). Retrieved June 27, 2011, from Australian Gouvernment: Reisewitz, J. C. (n.d.). Mesoamerican Reef: Low Stress Leads to Resilience. Retrieved June 27, 2011, from World Resource Institute: A Path to Sustainable Fishing . (2010, January 7). Retrieved June 27, 2011, from Environmental Defense Fund:, N. (n.d.). Overfishing: a threat to marine biodiversity. Retrieved June 27, 2011, from 10 stories the world should hear more about: - Promoting Sustainable Fisheries . (2011). Retrieved June 27, 2011, from World Wildlife Fund: THREATS TO OUR OCEAN FISHERIES: . (1999-2011). Retrieved June 27, 2011, from Marine Conservation: