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The Missisquoi River:

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Samuel de Champlain ... inhabitants of Vermont, prior to Samuel de Champlain. ... The 400 anniversary of Samuel de Champlain's voyage quickly approaches. ... – PowerPoint PPT presentation

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Title: The Missisquoi River:


1
The Missisquoi River
  • Landlocked Atlantic Salmon Management and
    Methylmercury
  • Chris Remsen

2
Samuel de Champlain
  • Reputed to have been the first European to view
    what is now Vermont, Champlain entered the lake
    on the fourteenth of July, 1609. Narrative
    published as Voyages in 1613.

3
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4
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5
The Missisquoi River
  • Drainage of surface waters in the Northern Green
    Mountains to Lake Champlain.
  • High mountains, cold winters, and short growing
    season have produced one of the least populated
    regions of the state.

6
The Missisquoi River
  • The biogeography of the region kept this
    ecosystem isolated and undisturbed.

7
The Abenaki
  • People of the Dawn, the original inhabitants of
    Vermont, prior to Samuel de Champlain.
  • Settlement of Missisquoi River fishing village
    prior to Samuel de Champlain.

8
The Abenaki
  • Cultural fishing traditions ceremonial meals are
    central features of funerals, memorials,
    name-giving rituals, and weddings. Subsistence
    is another factor.

9
Methylmercury
  • The Westerly winds disperse Mercury particulates
    from coal burning power plants. Methylation
    occurs after wet and dry deposition.
    Bioacculmulation occurs through food chains via
    tissue.

10
Methlymercury
  • Nearly 90 absorption in the GI tract.
  • Readily crosses the placental and blood brain
    barriers. Neurotoxicity from low dose exposure
    to the adult and fetus.

11
VT Dept. of Fish Wildlife
  • People management issue fish consumption
    advisories.
  • Fisheries Restock salmon population on annual
    basis.

12
VT Dept. of Fish Wildlife
  • Focused on output of methlymercury through
    consumption rather than input from particulates.
  • Replace reproductive adults salmon with juveniles
    to maintain population for anglers. Limited
    genetic variability.

13
EPA
  • Clear Skies Legislation establish cap and
    emissions trading for mercury.
  • Purchase of pollution credits rather than
    reducing their emissions through scrubbers and
    bag-houses.

14
Coal Burning Power Plants
  • Largest single source of anthropogenic emissions
    at over 40 of the total anthropogenic load.
  • The Southern Company, American Electric Power,
    Edison International, and Tennessee Valley
    Authority produce 20 of all mercury pollution in
    the US.

15
Issues
  • The human health risk should justify a call for
    action at the state and federal levels to reduce
    mercury emissions.
  • Where is the discourse? Who is the audience?
    This topic must amplify from the scientific
    community to the general public.

16
Issues
  • VT Dept of Fish Wildlife must address input
    through deposition to create real mercury risk
    reduction.
  • EPA must pursue a regulatory solution rather than
    cap and trade emissions through Clear Skies
    legislation.

17
Issues
  • Coal burning power companies reduction in profit
    to reduce emissions and human health risk.
  • Abenaki increased awareness of human health risk
    from fish consumption until a sustainable healthy
    salmon population can be restored.

18
The Charge
  • The 400 anniversary of Samuel de Champlains
    voyage quickly approaches. Will the health and
    sustainability of this ecosystem be restored?
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