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1 12/6/2015Free PowerPoint Template from www.brainybetty.com1

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)

3 12/6/2015Free PowerPoint Template from www.brainybetty.com3 What’s the problem? Example: Zebra mussels Decrease biodiversity –Out-compete and displace native species –Change ecosystem Change water clarity –Concentrate toxins PCB’s

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

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

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

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?

8 12/6/2015Free PowerPoint Template from www.brainybetty.com8 How do invasives get here? Accidental transport –Agriculture/produce –Ballast water

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

10 12/6/2015Free PowerPoint Template from www.brainybetty.com10 How do invasives get here? Intentional introductions –Kudzu

11 12/6/2015Free PowerPoint Template from www.brainybetty.com11 How do invasives get here? Landscaping –Lantana

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

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!!!

14 12/6/2015Free PowerPoint Template from www.brainybetty.com14 Control Measures Physical removal

15 12/6/2015Free PowerPoint Template from www.brainybetty.com15 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

16 12/6/2015Free PowerPoint Template from www.brainybetty.com16 Some Invasive Species in Florida Africanized/Killer bees Hydrilla

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