Challenges of Woody Invasive Species in the Barrington Area

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Presentation transcript:

Challenges of Woody Invasive Species in the Barrington Area ChicagoRTI.org ChicagoRTI.org

Urban Trees and Forests of the Chicago Region Reminder – what we know and what got us started Nowak et al., 2013

Why is buckthorn a concern? 28% of all of our trees is buckthorn 2% of all of our trees is amur honeysuckle Reminder – what we know and what got us started

Buckthorn Brought to the U.S. in the 1880’s as a ornamental plant. Rhamnus cathartica (European buckthorn) and Frangula alnus (Glossy buckthorn) are two species of exotic invasive tree. ChicagoRTI.org

Amur honeysuckle Lonicera maackii (bush honeysuckle) is an exotic invasive tree. It can grow to about 17 ft. in height. It was bought to the U.S. in the 1750s as an ornamental plant. ChicagoRTI.org

enhance our urban forest Talk about job security! Both species of buckthorn and amur honeysuckle are identified as noxious weeds in the state of Illinois Rhamnus cathartica is 28.2% of all tree species in the 7 county Chicago region Lake County 42% Cook County 32% DuPage County 25.4% McHenry County 35.7% Will County 12.9% Kane County 15.4% Kendall County 4.2% Lake County Forest Preserve District spends $2.5 million annually to control buckthorn To preserve, protect and enhance our urban forest resulting improved quality of life. ChicagoRTI.org

Why is buckthorn a concern?

What percentage of Barrington’s canopy is buckthorn or honeysuckle? Source: phytoimages.siu.edu ChicagoRTI.org

What percentage of Barrington’s canopy is buckthorn or honeysuckle? Source: phytoimages.siu.edu ChicagoRTI.org

What percentage of Barrington’s canopy is buckthorn or honeysuckle? Buckthorn in the Barrington area is probably around 35% Source: phytoimages.siu.edu ChicagoRTI.org

enhance our urban forest Why CRTI? Regional Goals for Buckthorn Eradication Millions of dollars are spent annually on buckthorn control and management. Damage to Illinois landscapes from buckthorn costs millions of dollars every year. To preserve, protect and enhance our urban forest resulting improved quality of life. ChicagoRTI.org

What does buckthorn look like? Both species have sub-opposite leaves Oval, slightly serrate 1.5” – 3” in length Rhamnus cathartica (European buckthorn) Typically found in drier sites Frangula alnus (Glossy buckthorn) Typically found in wetter sites ChicagoRTI.org

enhance our urban forest What does it look like? Source: flickriver.com To preserve, protect and enhance our urban forest resulting improved quality of life. Trees produce a small thorn like structure and create thickets. Source: U.S. Forest Service ChicagoRTI.org

enhance our urban forest What is the big deal? Both species are prolific seed producers Seeds are a diuretic To preserve, protect and enhance our urban forest resulting improved quality of life. Source: cipwg.uconn.edu ChicagoRTI.org

enhance our urban forest What is the big deal? Both species leaf out before anything else and keep their leaves until after everything else has lost their leaves. They become dominant in the landscape and modify the composition and function of the ecosystem (Williamston et al. 1996.) To preserve, protect and enhance our urban forest resulting improved quality of life. ChicagoRTI.org

Seeds can stay in the soil for several years so follow-up is required. Not once and done Seeds can stay in the soil for several years so follow-up is required. ChicagoRTI.org

Why are you and your property important? hey think that it is good for the birds. Your landscape may be feeding buckthorn and honeysuckle into important natural areas and other properties! Source: Jeff RaflikPull it Source: Jeff Raflikit Source: Conservation Corps ChicagoRTI.org

Source: phytoimages.siu.edu ChicagoRTI.org

What can we do about it? Great winter work! ChicagoRTI.org Source: phytoimages.siu.edu ChicagoRTI.org

Source: phytoimages.siu.edu ChicagoRTI.org

Chili Cook Off and Buckthorn Festival! Come clear buckthorn and taste some of the most delicious chili in town! Award the Best Chili and crown this year’s King and Queen of the Buckthorn! Source: phytoimages.siu.edu ChicagoRTI.org

Integrated Pest Management! Why CRTI? Bring in help! Integrated Pest Management! Source: phytoimages.siu.edu ChicagoRTI.org

Chicago Region Trees Initiative Why CRTI? Chicago Region Trees Initiative To preserve, protect and enhance our urban forest to ensure its longevity resulting improved quality of life. The Chicago region’s forest provides $51.2 billion in benefits. Our trees provide our quality of life! ChicagoRTI.org

enhance our urban forest Why CRTI? Chicago Region Trees Initiative Website: ChicagoRTI.org Woody Invasive Species Replacement Guide Using Native Species: http://chicagorti.org/sites/chicagorti/files/BuckthornReplacementList_Native_Final_0.pdf Questions: Lydia Scott, Director lscott@mortonarb.org To preserve, protect and enhance our urban forest resulting improved quality of life. ChicagoRTI.org