Climate Action and Sustainability Plan June 2021 | Page 133

4 Canada plum 4 Dotted hawthorn 3 Japanese maple 3 Horse chestnut 3 European silver fir 3 Yellow buckeye 3 Katsura tree 3 Nordmann fir 3 Oriental spruce 3 Trident maple 3 Japanese fir 3 Balsam fir 3 fir spp 3 Amur maple 3 Lace-leaf maple 3 hemlock spp 3 Noble fir 3 Paperbark maple 2 Black walnut 1 Sassafras

Note : Species that are not listed in the matrix are not known to be hosts to any of the pests analyzed .

Species Risk :

• Red indicates that tree species is at risk to at least one pest within county

• Orange indicates that tree species has no risk to pests in county , but has a risk to at least one pest within 250 miles from the county

• Yellow indicates that tree species has no risk to pests within 250 miles of county , but has a risk to at least one pest that is 250 and 750 miles from the county

• Green indicates that tree species has no risk to pests within 750 miles of county , but has a risk to at least one pest that is greater than 750 miles from the county

Risk Weight : Numerical scoring system based on sum of points assigned to pest risks for species . Each pest that could attack tree species is scored as 4 points if red , 3 points if orange , 2 points if yellow and 1 point if green .

Pest Color Codes :

• Red indicates pest is within Middlesex county

• Red indicates pest is within 250 miles county

• Yellow indicates pest is within 750 miles of Middlesex county

• Green indicates pest is outside of these ranges

I-Tree Report of Ecosystem Analysis at Mount Auburn Cemetery Insert to the Climate Action and Sustainability Plan

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