ARBORICULTURE & CONTENTS URBAN FORESTRY Volume 46, No. 4, July 2020 Formerly the Journal of Arboriculture, 1975 – 2005 (Volumes 1 – 31) O. Arabomen, P.W. Chirwa, and F.D. Babalola Understanding Public Willingness to Participate in Local Conservation Initiatives of Urban Trees in Benin City, Nigeria ......................................................................................................247 Abstract. As global populations become increasingly urban, public participation has emerged as a new and more direct initiative for the con- servation of urban trees and ecosystem services (ES). However, little effort has been made to understand the willingness of residents to partic- ipate in conservation programs for trees and ES in Benin City, Nigeria. To fill this gap, a survey to understand residents’ knowledge of ES and their perceptions around ES conservation, i.e., personal willingness to participate in voluntary conservation initiatives (VCIs), was conducted. Unlike the general misconception that trees are not appreciated in African cities, this study showed that most residents had a positive apprecia- tion for the ES provided by urban trees in Benin City. Additionally, irrespective of respondents’ demographics, the findings from this study indi- cated a growing importance of the ES that trees provide, such as regulation of excess heat, scenic beauty, flooding and erosion control, and provision of shade. Hence, willingness to participate in VCIs was related to the growing importance of ES in the study area. Respondents’ knowledge of ES, education, and years of residency increased the probability of an individual’s participation in VCIs in the city. Other socio demographic factors commonly related to urban forest participation (e.g., gender, marital status, income, profession, and residential location) did not significantly influence the willingness to participate in the conservation programs. Findings from this seminal study could assist future planning and emphasize to city developers, government (at all levels), resource managers, and decision makers the need to consider public val- ues and perceptions towards enhancing conservation initiatives for urban trees in Benin City. Keywords. Ecosystem Services; Indigenous Knowledge; Socio Survey; Urban Forests; Urban Residents; Voluntary Conservation Initiatives. Lee E. Bridges, Stephen C. Grado, Jason S. Gordon, Donald L. Grebner, and John D. Kushla The Influence of Canopy Cover on Property Values in a Small Southern US City ................262 Abstract. Urban forests have been shown to impact residential property values in the United States and other countries. This study demon- strates a hedonic pricing analysis estimating the impact of urban forest canopy cover on singlefamily residential property values using Lake- land, Tennessee, during the period of 2001 to 2005 as a typical study area for the southern United States. Canopy cover on the lot was not a significant contributor to property values. However, a 1.0% increase in canopy within buffers of 100 m, 500 m, and 1 km surrounding the lot was associated with a 0.12%, 0.17%, and 0.21% increase in home sales prices, respectively. Although the percentage increases were small, given the price of a home in areas like these, the dollar values were high. These results can be used to assist urban planners and policy makers in prioritizing forested lands for conservation and to evaluate economic effects of urban forestry policies and programs. Keywords. Canopy Cover; Hedonic Pricing; Residential Property; Urban Forests. Anna O. Conrad, Caterina Villari, Patrick Sherwood, and Pierluigi (Enrico) Bonello Phenotyping Austrian Pine for Resistance Using Fourier-Transform Infrared Spectroscopy ....276 Abstract. Austrian pine (Pinus nigra) is a valuable component of the urban landscape in the Midwestern USA. In this area, it is impacted by the fungal pathogen Diplodia sapinea, which causes a tip blight and canker on infected trees. While the disease can be managed through the application of fungicides and/or by preventing environmental conditions that are favorable for the pathogen, these practices only temporarily alle- viate the problem. A more sustainable solution is to use resistant trees. The objective of this study was to evaluate whether Fouriertransform infrared (FTIR) spectroscopy combined with chemometric analysis can distinguish between trees that vary in susceptibility to D. sapinea. Trees were phenotyped for resistance to D. sapinea by artificially inoculating shoots and measuring ensuing lesions seven days following inoc- ulation. Then, three different chemometric approaches, including a type of machine learning called support vector machine (SVM), were used to evaluate whether or not trees that varied in susceptibility could be distinguished. Trees that varied in susceptibility could be discriminated ©2020 International Society of Arboriculture
July 2020
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