Komatsu KJ, Avolio ML, Lemoine NP, et al. Global change effects on plant communities are magnified by time and the number of global change factors imposed. Proceedings of the National Academy of Sciences. 2019;116(36):17867-17873. doi:10.1073/pnas.1819027116.

Blair JM, Bohlen PJ, Freckman DW. Soil invertebrates as indicators of soil quality. In: Doran JW, Jones AJ Methods for Assessing Soil Quality. SSSA Special Publication. Methods for Assessing Soil Quality. SSSA Special Publication. Madison, WI: Soil Science Society of America Inc; 1996:283 -301.