Jason W. Miesbauer

Jason W. Miesbauer
Morton Arboretum · Research

PhD

About

28
Publications
6,156
Reads
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143
Citations
Introduction
Skills and Expertise

Publications

Publications (28)
Article
When professionals assess tree risk, they must consider the potential consequences associated with a branch or whole tree striking a person, vehicle, or structure. This process requires an assessor to determine the diameter and fall distance of a tree part and then gauge the likely damage to a target if failure occurred. The ability to accurately e...
Article
Long-term, multi-decade research on planted tree survival in urban settings is sparse. One understudied urban environment is highway rights-of-way (ROW), lands adjacent to high-speed, unsignalized roadways. We conducted a re-inventory of tree planting cohort in northern Illinois, U.S. on a 48 km-long highway near Chicago which were 10-, 21-, and 30...
Preprint
Full-text available
Long-term, multi-decade research on planted tree survival in urban settings is sparse. One understudied urban environment is highway rights-of-way (ROW), lands adjacent to high-speed, unsignalized roadways. We conducted a re-inventory of tree planting cohort in northern Illinois, U.S. on a 48 km-long highway near Chicago which were 10-, 21-, and 30...
Article
Full-text available
Urban Tree Canopy (UTC) greatly enhances the livability of cities by reducing urban heat buildup, mitigating stormwater runoff, and filtering airborne particulates, among other ecological services. These benefits, combined with the relative ease of measuring tree cover from aerial imagery, have led many cities to adopt management strategies based o...
Technical Report
Arborist News CEU Article with some research notes on key aspects of tree planting. From the October 2022 issue. Cite: Koeser, A.K., R.J. Hauer, and J. Miesbauer. 2021. Boldly Planting for the Next Generation. Arborist News 30(5):12-19.
Article
Arborists, urban foresters, and other tree care professionals commonly use visual risk assessment methods to evaluate tree safety. Most methods used by professionals have three main inputs: likelihood of impact, likelihood of failure, and consequences of failure. In assessing the latter, the size of the tree part expected to fail and its fall dista...
Preprint
Full-text available
Urban Tree Canopy (UTC) greatly enhances the livability of cities by reducing urban heat buildup, mitigating stormwater runoff, and filtering airborne particulates, among other ecological services. These benefits, combined with the relative ease of measuring tree cover from aerial imagery, have led many cities to adopt management strategies based o...
Article
Full-text available
Interactions between wind and trees control energy exchanges between the atmosphere and forest canopies. This energy exchange can lead to the widespread damage of trees, and wind is a key disturbance agent in many of the world's forests. However, most research on this topic has focused on conifer plantations, where risk management is economically i...
Technical Report
Full-text available
This report provides the results of the 2020 Tree Census, using an i-Tree Eco assessment, of the seven-county Chicago region: Cook, DuPage, Kane, Kendall, Lake, McHenry, and Will counties and the city of Chicago. Using methodology from the 2007 city of Chicago Urban Forest Effects model (UFORE) assessment and the 2010 Chicago region i-Tree assessme...
Article
Full-text available
When balled-and-burlapped trees are planted, a decision must be made regarding whether the wire basket, burlap, and other packing materials should be removed (completely or partially) or retained. While past research has failed to show a significant impact of either approach with regard to initial growth and establishment, many professionals still...
Preprint
Full-text available
1. Interactions between wind and trees control energy exchanges between the atmosphere and forest canopies. This energy exchange can lead to the widespread damage of trees and wind is a key disturbance agent in many of the world’s forests. However, most research on this topic has focused on conifer plantations, where risk management is economically...
Article
Trees are subjected to mechanical loading during their life span or face premature mortality. The strain resulting from loads inter-cepted by the canopy and transferred throughout the tree is of significant importance, not only for the survival of the tree, but for the safety and well-being of the human population found in close proximity. To test...
Article
Full-text available
Diversification of urban forests is essential to enhance their resilience to future biotic threats as well as those posed by a changing climate. Arboreta and botanic gardens host a wide range of plant material that can be evaluated to inform tree selection policy. This study demonstrates that plant functional traits, such as the water potential at...
Chapter
Trees are subjected to mechanical stressors, induced via dynamic (wind) and static (gravitational) forces, and must properly acclimate during their lifespan or face premature mortality. Resource allocation as a stress response is vital for tree survival and can include the shedding of woody parts, adaptive growth, hormonal signaling cascades, and t...
Preprint
Full-text available
Revisiting a past study of wire basket removal and retention for balled-and-burlapped trees. In this paper, we look at longer-term impacts of growth as well as assessing whole tree stability using static pull tests.
Chapter
Deeply planted trees are commonly observed in the urban landscape. However, the effect of deep planting on tree stability is not well documented. Green ash (Fraxinus pennsylvanica 'Patmore') trees were planted at three different depths in research plots and established for nine years. We then conducted static pull tests to evaluate the consequences...
Article
Trees are often deeply planted as a result of nursery and landscape practices. While past research has investigated the impact of deep planting on tree growth and survival, its impact on whole-tree stability is not well documented. Green ash (Fraxinus pennsylvanica 'Patmore') trees were planted at three different depths in research plots and establ...
Technical Report
Full-text available
The urban forest of the Chicago Wilderness region, a 7-million-acre area covering portions of Illinois, Indiana, Michigan, and Wisconsin, will face direct and indirect impacts from a changing climate over the 21st century. This assessment evaluates the vulnerability of urban trees and natural and developed landscapes within the Chicago Wilderness r...
Article
Tree risk assessments can be categorized by their time, training, and equipment requirements. In arboriculture and urban forestry, practitioners must select a risk assessment method that is appropriate for the tree or trees to be assessed, available resources, and management objectives. While more detailed advanced risk assessment levels are believ...
Article
Full-text available
Trees along utility corridors are often subjected to pruning and associated maintenance that potentially alter the loading of the tree. This can leave the tree unbalanced and potentially at increased risk of failure, possibly due to undetected internal decay or compromised structural roots. The distribution of strain (deformation) was investigated...
Article
Pruning removes mass and reduces bending in the wind on the pruned stem. However, little is known about the impacts of structural pruning, which leaves some parts of the tree not pruned. This study was designed to measure change in stem and trunk strain (ε) in turbulent wind from reducing the length of one side of a codominant stem pair. Trees were...
Article
Full-text available
The International Society of Arboriculture, in conjunction with The Morton Arboretum (Lisle, Illinois, U.S.), convened Tree Biomechanics Summit in September 2010 - bringing together a panel of internationally-recognized experts in the fields of tree biology, tree structure, structural engineering, computer modeling, and arboriculture. Following two...
Article
Knowledge of tree dynamic properties is important to improve one's ability to assess tree risk. Pull-and-release tests were performed on 16 Acer rubrum L. 'Florida Flame' trees in summer and winter over a two-year period, and natural frequency and damping ratios were calculated. One year prior to testing, trees were designated as either excurrent o...
Article
It has been observed that during ice, snow, and wind storms, branches oriented vertically tend to incur more damage than branches oriented horizontally. A study was conducted to determine breaking stress and breaking position of branches reoriented nearly horizontal and nearly vertical. Branches oriented 40-50 degrees from horizontal with mean diam...
Article
Some trees uproot in storms apparently due to root deflections that occur during nursery production. Root deflection in a nursery container may lead to poor anchorage because of insufficient root growth into the landscape soil, and container volume/tree size at planting may influence root deflection. This study was designed to evaluate establishmen...

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Project (1)
Project
The goal of this project is to improve recommendations for improving soil, selecting species, and choosing stock size when planting trees in highway right-of-ways.