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Emerald Ash Borers have shiny green bodies and an appetite for ash trees. This native Asian insect hitchhiked to North America and has killed millions of ash trees. Learn more about the emerald ash borer and what is being done to try to stop its spread.
This book was written by undergraduate students at The Ohio State University (OSU) who were enrolled in the class Introduction to Environmental Science. The chapters describe some of Earth's major environmental challenges and discuss ways that humans are using cutting-edge science and engineering to provide sustainable solutions to these problems. Topics are as diverse as the students, who represent virtually every department, school and college at OSU. The environmental issue that is described in each chapter is particularly important to the author, who hopes that their story will serve as inspiration to protect Earth for all life.
This book is a printed edition of the Special Issue "Understanding and Managing Emerald Ash Borer Impacts on Ash Forests" that was published in Forests
This guide is intended to assist field personnel in identifying life stages of, and damage caused by, emerald ash borer (EAB) (Agrilus planipennis Fairmaire). This difficult-to-detect insect causes symptoms in ash trees similar to those caused by many other abiotic and biotic causes. When diagnosing ash tree problems, it is important to step back and look at the whole picture as many diagnostic clues can be obtained by analyzing site conditions. Symptoms in EAB infested trees initially occur in the top portion of the canopy for the first 1-3 years after infestation.
This paper shows how to recognize and report damage from the emerald ash borer.
The Emerald Ash Borer (EAB), Agrilus planipennis, an invasive beetle species native to Asia and accidentally introduced to the United States and Canada was first detected in Detroit, Michigan in 2002. Since the initial detection of EAB it has caused ash tree (Fraxinus spp.) mortality ranging between 95-99% in regions of the Midwestern U.S. In an effort to combat ash tree mortality numerous research studies were launched to determine dispersal and behavioral patterns of EAB, as well as address ash tree survival and treatment options. Ash trees were analyzed from both an urban and non-cultivated area on the Indiana University Southeast campus and data were collected in 2015. Measuring canopy density using a densiometer is an accurate and consistent methodology that can be used instead of visual analysis of tree health. The results of data analyses suggest that some trees could have a higher survivorship potential based on growth parameter data in combination with spatial analysis. Using spatial analysis can detect trees with unique growth characteristics when compared to neighboring trees of the same genus. Finding healthy concentrations of ash trees as well as outlier ash trees surrounded by unhealthy trees are two methods that could be used to detect ash trees that are most likely to survive EAB infestation. Both healthy outliers and groups of healthy trees were found. Furthermore, an analysis of total economic value loss was conducted to evaluate the economic effects EAB could have if ash trees in poor health are removed. The economic value lost from removal of parking lot shade ash trees over a three-year period from 2012-2015 was over $713,000. The high value of economic loss suggests that treating ash trees is more economically efficient than removing ash trees unless the trees become a safety hazard. It is recommended that healthy outlier ash trees as well as healthy groups of ash trees be treated and seeds be collected from these uniquely healthy ash trees. It is also recommended that ash trees located in urban (cultivated) areas also continue to be treated to assess survivorship and potential tolerance to EAB and to off-set replacement and removal costs and allow larger canopy trees to remain, due to their higher economic value, as long as possible in affected areas.