TREATS TO SANDY BEACH ECOSYSTEMS:             A REVIEW             Defeo et al, 2009               Paper discussion       ...
GOAL• Provide physical and ecological attributes of sandy  beach ecosystems and their main antropogenic  pressures.
ecological features• Dissipative beach   • Has a wide, low gradient swash zone                                       http:...
• Reflective beach   • Steeper, narrow beach and swash zone                                 http://www.ozcoasts.gov.au/con...
SAND DYNAMIC
SANDY ECOSYSTEM FAUNA        Birds                Turtles
Mitigate                        erosion        Buffering                       Recycle         zone                       ...
Recreation                                   Nourishment          Cleaning                                   (restoration)...
Recreation         Cleaning or                 Nourishment          grooming                   (restoration)Exploitation  ...
TO DISCUSS•   How big is the problem?•   Can we mitigate threats in sandy ecosystems?•   Do we have tools to mitigate the ...
EXERCISETHE CASE OF THE MONTERRICO MARINE  PROTECTED AREA IN GUATEMALA
HOW CAN WE RESOLVE THE PROBLEM?       AUDIENCE OPINION
WHAT WE NEED TO RESOLVE•   Climate change in sandy ecosystems (long-term and large-scale stressor)•   The effect of cleani...
Mervin defeo etal 2009
Mervin defeo etal 2009
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Mervin defeo etal 2009

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Discussion of the paper by DeFeo et al. 2009 on threats to sandy beach ecosystems.

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Mervin defeo etal 2009

  1. 1. TREATS TO SANDY BEACH ECOSYSTEMS: A REVIEW Defeo et al, 2009 Paper discussion By Mervin E. Pérez
  2. 2. GOAL• Provide physical and ecological attributes of sandy beach ecosystems and their main antropogenic pressures.
  3. 3. ecological features• Dissipative beach • Has a wide, low gradient swash zone http://www.ozcoasts.gov.au/conceptual_mods/beaches/wdb.jsp
  4. 4. • Reflective beach • Steeper, narrow beach and swash zone http://www.ozcoasts.gov.au/conceptual_mods/beaches/wdb.jsp
  5. 5. SAND DYNAMIC
  6. 6. SANDY ECOSYSTEM FAUNA Birds Turtles
  7. 7. Mitigate erosion Buffering Recycle zone system Humanrecreation Sandy Biodiversity Ecosystems Services Transition Nursery area areas Food Nesting Chain areas
  8. 8. Recreation Nourishment Cleaning (restoration)Exploitation Sandy Pollution Ecosystems Stressor Urban Exotic expansion species Climate Mining change
  9. 9. Recreation Cleaning or Nourishment grooming (restoration)Exploitation Pollution Sandy Ecosystems Stressor Urban Exotic expansion species Climate Mining change
  10. 10. TO DISCUSS• How big is the problem?• Can we mitigate threats in sandy ecosystems?• Do we have tools to mitigate the stressors?• How can we deal with paradigm issues?• What are the best methods to mitigate negative factors on sandy ecosystems?
  11. 11. EXERCISETHE CASE OF THE MONTERRICO MARINE PROTECTED AREA IN GUATEMALA
  12. 12. HOW CAN WE RESOLVE THE PROBLEM? AUDIENCE OPINION
  13. 13. WHAT WE NEED TO RESOLVE• Climate change in sandy ecosystems (long-term and large-scale stressor)• The effect of cleaning frequency on sandy ecosystems• Off-road vehicles could affect ecological organization• Ecological features long-term data are necessary• Physical disturbance frequency, intensity and exotic species• Protected areas and multi-disciplinary analysis (paradigm shifts)

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