Invasive plants jobs 1.Catalina Island Conservancy internships: June 25- August 17. Information at: .

Invasive plants jobs

1. Catalina Island Conservancy internships: June 25-August 17. Information at: www.catalinaconservancy.org

2. Rocky Mountain Biological Laboratory (Gothic, CO) Invasive Plants intern:

• 40 hrs/week June 12-Aug 11 (8 weeks)• Room and meals supplied• Management and experiments on smooth brome and

Canada thistle• Applications reviewed March 1st, accepted until April 1st. • Contact: Dr. Jennifer Reithel (jreithel@gmail.com)

Invasive species impacts: reading

• Strayer, D., V. Eviner, J. Jeschke, and M. Pace (2006). Understanding the long-term effects of species invasions. Trends in Ecology and Evolution 21 (11):645-651.

4) Impacts

4) Impacts

Some observations:• “Tens Rule” From Williamson & Fitter (1996) Ecology 77:1661-1666

4) Impacts

Some observations:• “Tens Rule” From Williamson & Fitter (1996) Ecology 77:1661-1666

Only ~10% of imported species escape to wild

4) Impacts

Some observations:• “Tens Rule” From Williamson & Fitter (1996) Ecology 77:1661-1666

Only ~10% of imported species escape to wildOf species that make it to the wild, only ~10% become

naturalized

4) Impacts

Some observations:• “Tens Rule” From Williamson & Fitter (1996) Ecology 77:1661-1666

Only ~10% of imported species escape to wildOnly ~10% of species that make it to the wild become naturalizedOf species that become naturalized, only ~10% become pests

4) Impacts

Some observations:• “Tens Rule” From Williamson & Fitter (1996) Ecology 77:1661-1666

Only ~10% of imported species escape to wildOnly ~10% of species that make it to the wild become naturalizedOnly ~10% of naturalized species become pests

4) Impacts

Some observations:• “Tens Rule” From Williamson & Fitter (1996) Ecology 77:1661-1666

Only ~10% of imported species escape to wildOnly ~10% of species that make it to the wild become naturalizedOnly ~10% of naturalized species become pests

Example:1000 imported species

4) Impacts

Some observations:• “Tens Rule” From Williamson & Fitter (1996) Ecology 77:1661-1666

Only ~10% of imported species escape to wildOnly ~10% of species that make it to the wild become naturalizedOnly ~10% of naturalized species become pests

Example:1000 imported species

100 escape to wild

4) Impacts

Some observations:• “Tens Rule” From Williamson & Fitter (1996) Ecology 77:1661-1666

Only ~10% of imported species escape to wildOnly ~10% of species that make it to the wild become naturalizedOnly ~10% of naturalized species become pests

Example:1000 imported species

100 escape to wild10 become naturalized

4) Impacts

Some observations:• “Tens Rule” From Williamson & Fitter (1996) Ecology 77:1661-1666

Only ~10% of imported species escape to wildOnly ~10% of species that make it to the wild become naturalizedOnly ~10% of naturalized species become pests

Example:1000 imported species

100 escape to wild10 become naturalize

1 becomes pest

4) Impacts

Some observations:• “Tens Rule”• Measuring impact is complex

What should be measured and how?

4) Impacts

Some observations:• “Tens Rule”• Measuring impact is complex

What should be measured and how?For individual plant, individual species, or multiple species?

4) Impacts

Some observations:• “Tens Rule”• Measuring impact is complex

What should be measured and how?For individual plant, individual species, or multiple species?Over what time frame?

4) Impacts

Some observations:• “Tens Rule”• Measuring impact is complex• Lack of comprehensive data

4) Impactsa) Ecological

Conceptual model: From Walker & Smith in Lukens & Thieret (1997)• Invasive species affect different community & ecosystem

processes