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Marine Contaminants. Glacier Bay National Park and Preserve Klondike Gold Rush National Historical Park Sitka National Historical Park. D. Schirokauer /NPS. NPS Photo/B. Moynahan. Justification. Global and local sources of pollution. NPS Photo. Source: cenvironment.blogspot.com. - PowerPoint PPT Presentation
Citation preview
Southeast Alaska NetworkInventory and Monitoring Program
Marine Contaminants
Glacier Bay National Park and PreserveKlondike Gold Rush National Historical Park
Sitka National Historical Park
D. Schirokauer/NPSNPS Photo/B. Moynahan
Justification
Southeast Alaska NetworkInventory and Monitoring Program
Source: cenvironment.blogspot.com
Global and local sources of pollutionNPS Photo
Justification
Southeast Alaska NetworkInventory and Monitoring Program
Adapted from http://www.arctic.uoguelph.ca
Colder, polar regions
Temperate regions
Hotter, equatorial regions
Earth
Less volatilecompounds
More volatilecompounds
NPS Considerations
Southeast Alaska NetworkInventory and Monitoring Program
Ecosystems susceptible to contaminant threatsC. Sergeant
Source: gulfofmaine.org
Organism integrates contaminants and is reflective of park conditionsResults comparable with existing
benchmarks(from Schirokauer and Moynahan 2010)
Minimally invasive sampling approach
NPS photo/B. Moynahan
Sources of marine contamination
Southeast Alaska NetworkInventory and Monitoring Program
Heavy metals mostly a byproduct of fossil fuel and waste burning, mining and ore processing, chemical production, and agriculture
Polycyclic Aromatic Hydrocarbons (PAHs) occur naturally in coal, crude oil, and gasoline and other derived products
Persistent Organic Pollutants (POPs) are human-produced organic substances such as DDT and PCBs
“D.D.T: Powerful insecticide, harmless to humans…”
Objectives
Southeast Alaska NetworkInventory and Monitoring Program
• Monitor the current status and long-term trends of marine contaminants through sampling bay mussels in conformance with NOAA Mussel Watch protocols
• Maintain a regularly updated contaminant profile for selected reference sites NPS photo/B.
Moynahan
Southeast Alaska NetworkInventory and Monitoring Program May 6, 2009
GLBAKLGO
SITK
Logistics and Budget
Southeast Alaska NetworkInventory and Monitoring Program
35 g wet weight per site, per analysis
NPS photo
65 samples collected and analyzed in 2007 and 2009
2009 and 2011: 6 sites re-sampled for temporal variability (2 staff can complete field work 1-2 days GLBA; 1 hr SITK &
KLGO)
NPS photo/B. Moynahan
$196K for 2007-2011 effort (tech assistance, field sampling, lab testing, etc.)
Future field and lab work covered by SEAN (approx. $2K per sample)
What we’re learning
Southeast Alaska NetworkInventory and Monitoring Program
SEAN nearshore environments are very cleanMercury• Generally very low• Highest at Crescent Harbor in
Sitka
Total PAH• Generally very low or
undetectable• Bartlett Cove fuel dock
POPs• Below detection at nearly all
sites• Far below safe seafood
thresholds
What we’re learning
Southeast Alaska NetworkInventory and Monitoring Program
Valuable baseline conditions: Imagine if Prince William Sound had this information before Exxon-
Valdez
Observed pollution likely local
Some capacity to detect small events
What we’re learning
Southeast Alaska NetworkInventory and Monitoring Program
Future efforts
Southeast Alaska NetworkInventory and Monitoring Program
Full integration with NOAA Mussel Watch
Biennial sampling at ~7 sites
Exploring potential partnerships
Southeast Alaska NetworkInventory and Monitoring Program
Program Delivery
2011 results will be integrated into new assessment by UAS partner David Tallmon
Southeast Alaska NetworkInventory and Monitoring Program May 6, 2009
[email protected] 364.1591
NPS photo/B. Moynahan