Check it out!
Pass back the new objective
sheet and the permission slip!
Armand Bayou Nature Center
Homework tonight
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Worksheet – due next
class!
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Permission slip and
$15 due asap!
Why are species
disappearing?
Hey – if we don’t know why it’s broke, we can’t fix it!
What’s the difference?

Threatened: vulnerable to endangerment in
the near future

Endangered: at risk of becoming extinct
because it is either few in numbers, changing
environmental conditions or predation

Extinct- the death of all individuals of a
species
Hunting/Fishing
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Hunting to eat =
subsistence hunting
Bushmeat in Africa and
South/Central America
Commercial Fishing,
shrimping, crabbing,
oystering
Hunting: Pet Trade
Slow loris – not a good pet.
Just no.
Commercial hunting
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Poaching = Hunting
the wrong

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Species
At the wrong time
In the wrong
amounts
In the wrong places
Competition with introduced
species
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Chinese Tallow
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Balloon vine
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Fire ants
Scientists estimate that every year in the United States
alone, cats kill 1.4-3.7 billion birds and approximately
12 billion small mammals, including rabbits, squirrels
and chipmunks.
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Feral animals
(escaped from
domestication)
Water hyacinth and chinese
tallow trees
Pollution
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DDT – Bald
Eagle/Brown pelican
Beluga whale – PCB’s
Biomagnification –
accumulation of toxins
as they move up the
food chain
Habitat Loss
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Similar terms:
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Habitat alteration
Habitat
fragmentation
Superstitious beliefs
Check for understanding
What is the #1 reason that species become
endangered?
 How is a superstitious belief about an animal
different from the medicinal argument for
protecting a species?
 What is biomagnification?
 What is the difference between subsistence
hunting and commercial hunting?
 How is hunting different from poaching?
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