By Bill Smith
Chair of the Tree Advisory Team
This year, there have been voids in our urban forest canopy. The emerald ash borer has appeared in Lakeside and many of our ash trees. In 2009, Lakeside Leadership Academy interns counted 375 trees in the community.
A number of these trees have already died and been removed. Others are in the process of dying, such as the one pictured to the right, which is located across from the Lakeside United Methodist Church, on Walnut Avenue and Fifth Street.
The emerald ash borer is an invasive species from Asia, which most likely arrived in the U.S. on solid wood packing material on cargo ships and airplanes. The insects were first discovered in southeastern Michigan near Detroit, in the summer of 2002.
This damaging insect has spread rapidly and was found in Ohio (2003), northern Indiana (2004), northern Illinois and Maryland (2006), western Pennsylvania and West Virginia (2007), Wisconsin, Missouri and Virginia (2008), Minnesota, New York and Kentucky (2009) and Iowa and Tennessee (2010), as well as Canada starting in Windsor, Ontario.
The emerald ash borer has a one-year life cycle. Adult beetles appear in early summer as they exit through the bark of the tree through small “D” shaped holes. These holes are apparent on the tree across from the church.
The adults nibble on ash foliage, but cause little damage. They lay eggs about a month after appearing before they die.
The larvae (immature stage) hatch, eat through the bark, and spend the next nine months feeding on the inner bark (Phloem) of ash trees, disrupting the tree’s ability to transport water and nutrients.
Eventually the tree dies. Tens of millions of ash trees in the U.S. have been lost to the ash borer.
As ash trees are lost in Lakeside, it is important to replace them with other trees. The Tree Advisory Team has a list of recommended trees appropriate for Lakeside, which soon will be available at the Lakeside Association Office.
The Tree Advisory Team was established to support the efforts of Lakeside staff and provides guidance to the Municipal Services Committee of the Lakeside Association Board of Directors.
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