20 Muller and Bornstein: Maintaining the Diversity of California’s Municipal Forests the goal of maintaining a diverse urban forest was codified in an actual management plan, usually as part of the overall com- munity urban forest management plan. As might be anticipated, the personnel involved in developing a diversity management plan varied significantly among municipalities, ranging from the urban forester alone to a group consisting of the urban forester, parks and recreation commissioner, and parks commission. In a few cases, a broader group composed of the mayor, council member(s), planning commissioner, parks commissioner, city manager, public services director, urban forester, and the pub- Table 1. California, U.S., communities responding to survey and providing approved planting list and street tree inventory. Per Capita Community Anaheim Arcadia Burbank Burlingame Carlsbad Chula Vista Claremont Coronado Costa Mesa Davis Downey El Cajon El Segundo Folsom Glendale Glendora Goleta Hayward Populationz 334,425 53,054 104,317 27,573 92,928 212,756 35,103 22,845 109,809 60,964 109,376 91,756 16,282 66,123 199,463 50,370 55,204 Huntington Beach 194,436 La Mesa La Puente Lodi 140,606 53,043 Milpitas Modesto Newark 41,526 62,451 64,292 205,721 41,891 Newport Beach 80,006 Oceanside Pasadena Pomona Riverside Roseville San Dimas Santa Barbara Santa Cruz Santa Maria Santa Monica Santa Rosa Santee Saratoga Sierra Madre Simi Valley Sunnyvale Union City West Covina 161,029 141,133 154,271 293,761 107,158 35,714 85,681 54,778 84,712 88,050 154,212 52,530 29,843 10,874 30,045 Thousand Oaks 124,207 Turlock 130,519 55,810 69,477 West Sacramento 44,162 Yuba City 107,745 36,578 Income ($)z 18,266 28,400 25,713 43,565 34,863 18,556 28,843 34,656 23,342 22,937 18,197 16,698 33,996 30,210 22,227 25,993 28,890 19,695 31,964 22,372 11,336 18,719 27,823 17,797 23,641 63,015 20,329 28,186 13,336 17,882 27,021 28,321 26,466 25,758 13,780 42,874 24,495 21,311 65,400 41,104 26,586 36,524 43,047 16,844 22,890 19,342 15,245 15,928 # Planting 56 76 38 50 37 71 23 55 68 24 32 87 103 32 36 15 95 16 25 45 44 51 77 55 30 95 87 40 105 33 41 56 23 49 53 28 32 12 28 50 20 z Population and per capita income were obtained from the U.S. Census Bureau (2008) and represent data for 2000 and 1999, respectively. y This is lower than the number of trees in Santa Barbara cited previously as the inventory includes strictly street trees in the municipality of Santa Barbara and includes neither trees in parks and public gardens, nor those in the broader metro- politan area including Montecito and Goleta. ©2010 International Society of Arboriculture Figure 1. Frequency of species occurrence on approved street tree planting lists of 42 California communities. Of the 309 species on the combined approved planting lists, most were approved by only a few of the responding communities. For instance, 198 of those species were found on the planting lists of five or fewer communities. # Inventory List Species Species 51 357 176 116 134 254 156 199 122 320 165 139 43 95 245 241 101 408y 224 159 161 199 170 143 lic at large was represented in formulating the plan. Six of the 19 municipalities with formalized diversity plans indicated that their plans included steps to address potentially invasive species. However, an additional six municipalities indicated they had in- vasive species plans in place without a plan to increase diversity. Although the questionnaire did not specifically ask about plant- ing of native species, one municipality indicated its overall ur- ban forest plan was to plant California native species in order to encourage food sources and nesting sites for native birds. Thirty-nine of the 49 respondents (80%) indicated an inven- tory of street trees was in place; however, several expressed regret that the inventory was long out of date (10–20 years old). Re- sponses varied as to how often the inventory was updated. Twen- ty-three of the 39 municipalities with inventories (59%) indicated these were updated at frequencies of one year or less, suggesting that planting and removal were regularly updated in the invento- ry. An additional six respondents indicated that inventories were updated on a 10–20 year basis, suggesting that inventories were static until a new one was conducted. Most of the respondents who did not have an existing inventory cited lack of financial re- sources as the primary reason. Only one of the 39 respondents who maintained a street tree inventory made it available online. Forty-five of the 49 respondents (92%) indicated they main- tained lists of acceptable species for planting on public streets (medians and parkways). The number of approved species among the 42 communities providing such a list averaged 49 (range 12–105). However, the number of species making up the combined list of approved species from all 42 communities was significantly greater – 309 (Table 3). Relatively few spe- cies were common to planting lists of a large proportion of those communities (Figure 1). In total, only six species were found on planting lists of more than 75% of the responding communities. In contrast, almost two-thirds of the species (198) were found on the approved lists of five or fewer communities (Figure 1).
January 2010
| Title Name |
Pages |
Delete |
Url |
| Empty |
Search Text Block
Page #page_num
#doc_title
Hi $receivername|$receiveremail,
$sendername|$senderemail wrote these comments for you:
$message
$sendername|$senderemail would like for you to view the following digital edition.
Please click on the page below to be directed to the digital edition:
$thumbnail$pagenum
$link$pagenum
Your form submission was a success. You will be contacted by Washington Gas with follow-up information regarding your request.
This process might take longer please wait
