Journal Article 2 structural equation model (SEM) 142M471B3J 1 Air Pollutants 1 Brassica nigra 1 Brassica oleracea 1 Carbon Dioxide 1 mehr ... Fagus sylvatica 1 Glucosinolates 1 Pieris rapae 1 Pinus sylvestris 1 Pyrenees 1 Research Support, Non-U.S. Gov't 1 Research Support, U.S. Gov't, Non-P.H.S. 1 Soil 1 compensatory feeding hypothesis 1 elevated CO2 1 ensemble empirical mode decomposition (EEMD) 1 feeding deterrent 1 glucosinolates 1 hormone-mediated CO2 response (HMCR) 1 leaf litter 1 nutrient cycling 1 nutrient limitation 1 soil fertility 1 stoichiometry 1 weniger ...