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Davey Resource Group, Inc. <br />Tree Inventory Analysis & Maintenance Strategy <br />Page i <br />TABLE OF CONTENTS <br />Acknowledgements ................................................................................................................................................... ii <br />Executive Summary .................................................................................................................................................. iii <br />Inventory Analysis Summary .................................................................................................................................... iv <br />Recommended Maintenance .................................................................................................................................... v <br />Introduction ...............................................................................................................................................................1 <br />Section 1: Structure And Composition .....................................................................................................................4 <br />Section 2: Functions And Benefits.......................................................................................................................... 11 <br />Section 3: Recommended Maintenance ................................................................................................................ 17 <br />Conclusion .............................................................................................................................................................. 26 <br />References ............................................................................................................................................................... 28 <br />TABLES <br />1.Summary of benefits provided by the most common inventoried street trees. .................................. 12 <br />2.The inventoried species which provide the greatest annual benefit per tree. ..................................... 13 <br />3.Inventoried species with the highest per tree replacement value. ..................................................... 15 <br />4.Example maintenance schedule and budget for a five-year tree management program. .................... 25 <br />FIGURES <br />1.Number of inventoried sites by location and type. .......................................................................................4 <br />2.Species diversity of trees which make up at least 2% of the inventoried population. .................................5 <br />3.Genera diversity of trees which make up at least 2% of the inventoried population. .................................6 <br />4.Susceptibility of the tree resource to pests and diseases of concern in Minnesota. ....................................7 <br />5.Condition ratings of street trees. ..................................................................................................................7 <br />6.Relative age distribution of the inventoried trees. .......................................................................................9 <br />7.Inventoried tree condition ratings compared to age class. ..........................................................................9 <br />8.Breakdown of annual benefits provided by the inventoried tree resource. ............................................. 13 <br />9.Hydrological functions of trees. Source: ‘Stormwater to Street Trees: Engineering Urban Forests for <br />Stormwater Management’, EPA publication 841 B 13 001. ....................................................................... 14 <br />10.Removal recommendations for Dead condition trees. .............................................................................. 18 <br />11.Removal recommendations for Poor condition trees. ............................................................................... 19 <br />12.Trees included in the routine pruning cycle as of the completion of the inventory. ................................. 21 <br />APPENDICES <br />A. Summary of Recommendations <br />B. Study Area and Data Collection Study Area <br />223