Schwarz, N., Moretti, M., Bugalho, M. N., Davies, Z. G., Haase, D. H., Hack, J., … Knapp, S. (2017). Understanding biodiversity-ecosystem service relationships in urban areas: a comprehensive literature review. Ecosystem Services, 27, 161-171. https://doi.org/10.1016/j.ecoser.2017.08.014