“…For example, elements in plants such as K, Mg, sulfur (S), iron (Fe), calcium (Ca) and zinc (Zn) are involved in photosynthesis, transport of metabolites, enzyme control (co-enzymes), respiration, water flow, internal cell homeostasis and reproduction (Tripler et al, 2006;Naples and Fisk, 2010;Baribault et al, 2012;Rivas-Ubach et al, 2012;Peñuelas et al, 2013cPeñuelas et al, ,2019aKaspari and Powers, 2016;Jeyasingh et al, 2014Jeyasingh et al, , 2017Minden et al, 2020). Similarly, elements other than N, P and K may be limiting in some terrestrial ecosystems and may elicit community-level effects (Naples and Fisk, 2010;Baribault et al, 2012;Lapenis et al, 2013;Lannes et al, 2020b). For example, herbivore fitness may be compromised by the limitation of elements other than N, P and K in food (Filipiak, 2016;Filipiak and Weiner, 2017a,b).…”