Article Figures & Data
Tables
- Table 1.
Plant Species Diversity Score and its relationship to characteristics of the nursery where the survey respondents worked, considerations in deciding to add plant species, cultivars, or varieties to inventories, and source of knowledge on species diversity issues or educational level for Washington, U.S., wholesale nursery industry respondent.
Survey subject Percentz Diversityy Δx pw Nursery characteristic Area for single most produced species is <1 acre 42 26.3 +3.4 0.07 Total area for wholesale production is <2 acres 28 26.0 +2.4 0.24 Inventory of different plant species is >50 44 25.5 +2.1 0.27 Inventory of cultivars or varieties is >100 54 25.5 +2.0 0.30 Plants shipped out of state is <20% of production 75 24.6 +1.2 0.61 Plant inventory decision considerationsv Environmental concern 22 25.6 +1.7 0.47 Last year’s sales and profitability 36 24.7 +0.6 0.76 Customer requests 67 24.1 −0.6 0.75 Ease of growth and maintenance 50 23.6 −1.5 0.44 Overall plant preferences 64 23.5 −2.3 0.25 Sales and marketing info 42 22.3 −3.4 0.08 Production costs 33 22.1 −3.3 0.10 Species diversity knowledge sourcev School or college class 30 27.4 +4.4 0.03 University outreach (researchers, field days, extension) 28 26.8 +3.5 0.10 Professional organizations 42 25.6 +2.2 0.26 Trade journals and articles 69 24.8 +1.7 0.40 Government programs (USDA, WSDA) 36 22.5 −2.8 0.17 Education beyond high schoolu 61 25.7 +3.7 0.05 ↵zPercent of respondents who selected the characteristic, consideration, or source.
↵yScale from 7 to 42, with higher values indicating a greater awareness of diversity.
↵xChange = Diversity for respondents who selected the characteristic – Diversity for those who selected a different characteristic.
↵wSignificance of change in diversity, based on ANOVA.
↵vRespondent could check more than one.
↵uResponse based on overall level of schooling not on learning about plant diversity.
Survey attitude statements Percentz Agreementy Statements where agreeing may indicate awareness of species diversity issuesx “Increasing the number of different plant species used in an area is important for biodiversity.” 85 4.78 “Lack of plant diversity in a given region is an ecological problem.” 56 3.83 “Planting more than 10% of the same plant species in a region greatly increases the risk of insect or disease outbreaks.” 45 3.26 “Planting large numbers of a single plant species in a commercial or residential landscape increases the likelihood of severe insect or disease outbreaks.” 40 3.33 Statements where agreeing may indicate lack of awareness of species diversity issuesx “The wholesale nursery industry is already addressing the species diversity issue, because they frequently introduce new plants for their customers.” 83 3.20 “Pest problems with mass plantings of a single species in a landscape can be adequately controlled with appropriate pest management.” 73 3.22 “Elm trees that have died from Dutch elm disease should be replaced with the new disease-resistant elms.” 59 2.56 Statements on the role of the nursery industry “Most wholesale nurseries currently offer an adequate range of genetically different plants for their customers to choose from.” 78 4.29 “The wholesale nursery industry could easily add more plant species to their inventories.” 67 3.90 “Voluntarily increasing the number of different plant species in their inventories would allow nurseries to avoid regulatory interference from state or federal authorities.” 24 2.64