CUMULATIVE MORTALITY
FACTORS
- What constitutes a sustainable harvest
is scientifically unknown and poorly understood and has potential to
prevent recovery and accelerate declines in seaducks
- Excessive seasons, bag, and possession
limits imposed on the Mergini tribe is based on the personal bias and
opinion of one or two individuals in Alaska without sound biological
information.
- Sea ducks are important indicators of
the quality of freshwater and marine ecosystems of northern Biomes
- Where are the threshold level mortality
factors.
- Cropping ducks too close creates a
domino effect which can take species over the sustainability threshold
if population are not first stabilized
a.) botulism, "duck sickness", kills birds by the
hundreds of thousands.
b.) avian cholera respiratory disease, a chief cause of waterfowl
death. More
than 4,000 waterfowl killed just this
last 1998 Christmas holiday.
c.) Salmonella outbreak in songbirds 1998.
d.) Environmental contaminants: Cadmium, Mercury, Lead, Selenium,
chromium, Copper, Arsenic
e.) Threat of oil and chemical spills in wintering grounds
f.) ship ballast pumping into Alaskan waters bringing unknown
microorganisms.
g.) forest fragmentation
h.) Increased human population pressure
i.) Increased boat and equipment technology
j.) Increased predation
- Concentration of Bald Eagle populations
- cumulative effects of stress factors
ECOSYSTEM CONSIDERATIONS
- Ecological regime shift in the North
Pacific
- Pacific Decadal Occillation in its
positive phase
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