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.