Table 1.
Search fields and associated search strings for retrieving environmental science research on regulating and supporting ecosystem services from Web of Science and Scopus.
Table 2.
Search fields and associated search stings for retrieving economic valuation research on regulating and supporting ecosystem services from Web of Science and Scopus.
Fig 1.
Variation among ecosystem types and ecosystem services.
(A) Eta-squared (η2) for a two-factor (ecosystem service, ecosystem type) ANOVA of the number of article hits in the two research domains. Also shown are cumulative frequency plots for N = 15 ecosystem services (B) and N = 32 ecosystem types (C). See Kadykalo_etal_ESRE_data_6.csv for cumulative frequency data.
Fig 2.
Correlation between environmental science and economic valuation article hits.
Scatterplot between environmental science and economic valuation research effort as estimated by the log10+1 number retrieved article hits for N = 15 regulating and supporting ecosystem services × N = 32 ecosystem types (A), N = 15 individual regulating and supporting ecosystem services (B), and N = 32 individual ecosystem types (C).
Fig 3.
Research effort in environmental science and economic valuation.
Heat map of economic valuation and environmental science research effort on each of N = 15 regulating and supporting ecosystem service and N = 32 ecosystem type combinations as estimated by retrieved article hits. Raw article hits were normalized based on the smallest (0%) and largest (100%) values in each data set to allow for direct and relative comparison between research domains with respect to relative article hits. Red cells indicate higher, blue cells indicate lower research effort for that combination of ecosystem service and ecosystem type relative to the average effort.
Fig 4.
Research effort differential between environmental science and economic valuation.
Heat map of the z-transformed Log10+1 research effort differential between environmental science and economic valuation research effort on each of N = 15 regulating and supporting ecosystem service and N = 32 ecosystem type combinations as estimated by retrieved article hits. Z-transformed differentials were normalized using the z-transformed value of the raw differential of zero (-1.03) to allow for direct comparison between research domains with respect to relative article hits. Red cells indicate higher environmental sciences, blue cells indicate higher economic valuation research effort for that combination of ecosystem service relative to the average effort. See Kadykalo_etal_ESRE_data_7.tab for research effort differential data.