Systems. Dead Zones. Dead Zones. Dead Zones – low concentrations of dissolved oxygen = hypoxia below 5 ppm movement slows, below 2 ppm organisms that can will leave, below 0.2 ppm black sediments with anerobic bacteria. Examples: Lousiana coast, Hood Canal, San Diego/Mexico area.
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Puget Sound Action Team
IAM is a three-year study to use marine, freshwater and biota monitoring data and a computer model to quantify the role the various natural processes and human actions are playing to control the concentrations of dissolved oxygen in Hood Canal and test corrective action scenarios.Systems - Organizational
Hood Canal Dissolved Oxygen Program
Evaluate potential corrective actions for the low dissolved oxygen condition.
Tertiary Consumer - Orca
Secondary Consumer - Salmon (chinook high in PCB) Seals, sea lions
Primary Consumer – forage fish (herring, surf smelt)
Producer - phytoplankton
DECOMPOSERSHood Canal Food Chains