Wellfleet’s Other Salt Marshes John Riehl   -- Wellfleet Harbor Conference 2008
Wellfleet’s Unrestricted Salt Marshes
Value of the Salt Marshes <ul><li>Primary source of productivity for the Harbor </li></ul><ul><li>Nursery for fish and oth...
Threats to the Marshes <ul><li>Global warming and sea level rise </li></ul><ul><ul><li>Salt Marsh Die-back </li></ul></ul>...
Protective Actions <ul><li>Maintain natural tidal regime </li></ul><ul><li>Allow marshes to migrate landward in response t...
(Map showing tidal restrictions in Wellfleet) Wellfleet’s Restricted Salt Marshes
Restoration Issues <ul><li>High coliform bacteria, low oxygen, tidal creek sedimentation, invasive plants </li></ul><ul><l...
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Wellfleet’S Other Salt Marshes

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Presentation from 2008 State of Wellfleet Harbor Conference

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Transcript of "Wellfleet’S Other Salt Marshes"

  1. 1. Wellfleet’s Other Salt Marshes John Riehl -- Wellfleet Harbor Conference 2008
  2. 2. Wellfleet’s Unrestricted Salt Marshes
  3. 3. Value of the Salt Marshes <ul><li>Primary source of productivity for the Harbor </li></ul><ul><li>Nursery for fish and other wildlife </li></ul><ul><li>Storm surge protection </li></ul><ul><li>Pollution filter </li></ul>
  4. 4. Threats to the Marshes <ul><li>Global warming and sea level rise </li></ul><ul><ul><li>Salt Marsh Die-back </li></ul></ul><ul><li>Barriers to natural marsh surface replenishment </li></ul><ul><ul><li>Harbor side and land side </li></ul></ul><ul><li>Marsh destruction by filling, compaction or ditching </li></ul>
  5. 5. Protective Actions <ul><li>Maintain natural tidal regime </li></ul><ul><li>Allow marshes to migrate landward in response to sea level rise </li></ul><ul><li>Allow natural harbor sediments to re-nourish marsh surface </li></ul><ul><li>Do not fill or drive on marshes </li></ul>
  6. 6. (Map showing tidal restrictions in Wellfleet) Wellfleet’s Restricted Salt Marshes
  7. 7. Restoration Issues <ul><li>High coliform bacteria, low oxygen, tidal creek sedimentation, invasive plants </li></ul><ul><li>Sedimentation, invasive plants </li></ul><ul><li>Social issues concern in each case </li></ul><ul><li>Restoration is slow, expensive, controversial </li></ul><ul><li>MORAL: PROTECT WHAT WE HAVE! </li></ul>
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