welcome wolves! please.... 1. get out your index card and make sure your name is on it!! 2. read the...
TRANSCRIPT
Welcome Wolves! Please . . . .
1. Get out your index card and make sure your name is on it!!2. Read the board.3. Get out a piece of paper for notes
Why are species Why are species disappearing?disappearing?Hey – if we don’t know why it’s broke, we can’t fix it!
Subsistence HuntingSubsistence HuntingHunting to meet
personal needBushmeat in
Africa and South/Central America
Commercial huntingCommercial huntingPoaching = Hunti
ng the wrong◦ Species◦ At the wrong time◦ In the wrong
amounts◦ In the wrong
places
Superstitious beliefsSuperstitious beliefs
“Pest” control
Competition with introduced speciesChinese Tallow Balloon vine
Fire ants
Scientists estimate that every year in the United Scientists estimate that every year in the United States alone, cats kill 1.4-3.7 billion birds and States alone, cats kill 1.4-3.7 billion birds and approximately 12 billion small mammals, including approximately 12 billion small mammals, including rabbits, squirrels and chipmunks. rabbits, squirrels and chipmunks.
Feral animals (escaped from domestication)
PollutionPollutionDDT – Bald
Eagle/Brown pelican
Beluga whale – PCB’s
Biomagnification – accumulation of toxins as they move up the food chain
Pet TradePet Trade
Slow loris – not a good pet. Slow loris – not a good pet. Just no.Just no.
Habitat LossHabitat LossSimilar terms:
◦ Habitat alteration◦ Habitat
fragmentation
Check for understandingCheck for understandingWhat 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?
CHARACTERISTICS OF CHARACTERISTICS OF SPECIES WHICH MAKE SPECIES WHICH MAKE THEM LIKELY TO BE THEM LIKELY TO BE ENDANGEREDENDANGERED
Some species are at greater risk to begin with.Some species will never be endangered.
They are specialistsThey are specialists
Specialist – Panda ONLY eats bamboo
Specialist – needs helmet to survive
Have attractive Have attractive fur/feathers/attributesfur/feathers/attributes
Take a long time to reach Take a long time to reach maturity, reproduce, and maturity, reproduce, and
produce only a few produce only a few offspring at onceoffspring at once
Lions African Elephants
Limited habitatLimited habitat
Attwater Prairie Chicken Blind Cave Salamander
Genetically similarGenetically similar
Cheetah California Condor
High on the food chainHigh on the food chain
Timber wolf Jaguar
Check for understandingCheck for understandingWhy would an animal high on the
food chain be likely to become endangered?
Name three characteristics of a species (besides high on the food chain) that make it likely to become endangered.
Homework tonight:Homework tonight:Wildlife
management tool:◦ Explain it, provide
example
◦ Be ready to teach yours to the class tomorrow!