12/6/2015Free PowerPoint Template from www.brainybetty.com1
Slide 2 12/6/2015Free PowerPoint Template from www.brainybetty.com2
Definitions Non-Native/introduced/alien/exotic
speciesNon-Native/introduced/alien/exotic species Species found
outside their native range Got there with the help of humans
Populations are growing without human assistance Invasive
SpeciesInvasive Species Introduced species that are causing
problems ($$$ and biodiversity) Slide 3 12/6/2015Free PowerPoint
Template from www.brainybetty.com3 Whats the problem? Example:
Zebra mussels Decrease biodiversity Out-compete and displace native
species Change ecosystem Change water clarity Concentrate toxins
PCBs Slide 4 12/6/2015Free PowerPoint Template from
www.brainybetty.com4 Zebra Mussels Economic cost Clog intake pipes
Change fish communities Estimated cost = $5 billion over next 10
years Slide 5 Cane Toads Cane toads are opportunistic feeders and
well known for being voracious eaters that trait has allowed them
to be successful as an invasive species in places like Australia
Slide 6 12/6/2015Free PowerPoint Template from www.brainybetty.com6
Why are some invasives so successful? 1. Characteristics of good
invaders Competitive Reproduce a lot and quickly Grow quickly Slide
7 12/6/2015Free PowerPoint Template from www.brainybetty.com7 2.
Enemy escape hypothesis Most invasives are not considered a problem
in native range Escape natural predators and parasites in new range
nothing to keep population in check 3. Characteristics of the
invaded community Disturbed area Why are some invasives so
successful? Slide 8 12/6/2015Free PowerPoint Template from
www.brainybetty.com8 How do invasives get here? Accidental
transport Agriculture/produce Ballast water Slide 9 12/6/2015Free
PowerPoint Template from www.brainybetty.com9 How do invasives get
here? Intentional introductions European Starling European Starling
- introduced Eastern Bluebird - native Slide 10 12/6/2015Free
PowerPoint Template from www.brainybetty.com10 How do invasives get
here? Intentional introductions Kudzu Slide 11 12/6/2015Free
PowerPoint Template from www.brainybetty.com11 How do invasives get
here? Landscaping Lantana Slide 12 12/6/2015Free PowerPoint
Template from www.brainybetty.com12 How do invasives get here?
Escape/release Accidental escape People releasing unwanted pets
Eradication/control of other species Slide 13 12/6/2015Free
PowerPoint Template from www.brainybetty.com13 Control Measures
Physical removal/hunting Chemical control Biological control Often
extremely expensive The best thing to do? Prevent the invasion!!!
Slide 14 12/6/2015Free PowerPoint Template from
www.brainybetty.com14 Control Measures Physical removal Slide 15
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Control of Fire Ants Chemical control To treat all areas with fire
ants with pesticide would cost $6 - $12 billion per year!
Biological control Decapitating flies Fire ant disease Slide 16
12/6/2015Free PowerPoint Template from www.brainybetty.com16 Some
Invasive Species in Florida Africanized/Killer bees Hydrilla
