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16 | CITY OF PLEASANTON URBAN FOREST MASTER PLAN <br />KEY FINDINGS <br />Key Finding #3 <br />Increasing Species Diversity with Climate Adapted Trees Will Help Create a More Resilient Urban Forest <br />The City’s inventory currently contains 23,722 individual <br />trees, comprised of 114 genera, and 250 species. Of the <br />total 250 species, 36 species making up 11,132 trees, or <br />40.2% of the total City inventory, are likely to be poorly <br />adapted to Pleasanton’s future climate if temperatures <br />continue to rise as predicted by California’s Fourth Climate <br />Change Assessment (Cayan 2018). Species predicted <br />to be poorly adapted include American sycamore, coast <br />redwood, and maple (Acer species) which combined <br />comprise 2,279 trees or 11.5% of the City’s inventory <br />and typically need higher levels of water and cooler <br />temperatures to thrive. California is continually adapting to <br />changing climate conditions with policies that restrict water <br />use and require the removal of non-functional turf. These <br />changes in statewide policy may make it difficult for the <br />City to supply the supplemental irrigation these species