Ghirardo, A. et al. Protein expression plasticity contributes to heat and drought tolerance of date palm. Oecologia 197, 903–919 (2021) Monson, R.K.* ; Weraduwage, S.M.* ; Rosenkranz, M. ; Schnitzler, J.-P. & Sharkey, T.D.* Leaf isoprene emission as a trait that mediates the growth-defense tradeoff in the face of climate stress. Oecologia 197, 885-902 (2021) Allan, E.* et al. A comparison of the strength of biodiversity effects across multiple functions. Oecologia 173, 223-237 (2013) Way, D.A.* ; Schnitzler, J.-P. ; Monson, R.K.* & Jackson, R.B.* Enhanced isoprene-related tolerance of heat- and light-stressed photosynthesis at low, but not high, CO2 concentrations. Oecologia 166, 273-282 (2011) Albert, A. ; Sareedenchai, V.* ; Heller, W. ; Seidlitz, H.K. & Zidorn, C.* Temperature is the key to altitudinal variation of phenolics in Arnica montana L. cv. ARBO. Oecologia 160, 1-8 (2009) Kluge, M.* ; Brulfert, J.* ; Ravelomanana, D.* ; Lipp, J. & Ziegler, H.* Crassulacean acid metabolism in Kalanchoë species collected in various climatic zones of Madagascar: a survey by δ13C analysis. Oecologia 88, 407-414 (1991) Batanouny, K.H.* ; Stichler, W. & Ziegler, H.* Photosynthetic pathways, distribution, and ecological characteristics of grass species in egypt. Oecologia 75, 539-548 (1988) Schramel, P. ; Oven, R. ; Schulze, E.-D. ; Weck, K.S. & Meyer, S. Performance of two Picea abies (L.) Karst stands at Different Stages of Decline. VI. Nutrient Relations and Growth. Oecologia (1988) Schönwitz, R.* ; Stichler, W. & Ziegler, H.* δ13C values of CO2 from soil respiration on sites with crops of C3 and C4 type of photosynthesis. Oecologia 69, 305-308 (1986) Tenhunen, J.D.* ; Tenhunen, L.C.* ; Ziegler, H.* ; Stichler, W. & Lange, O.L.* Variation in carbon isotope ratios of Sempervivoideae species from different habitats of Teneriffe in the spring. Oecologia 55, 217-224 (1982) Ziegler, H. ; Batanouny, K.H. ; Sankhlá, N. ; Vyas, O.P. & Stichler, W. The photosynthetic pathway types of some desert plants from India, Saudi Arabia, Egypt, and Iraq. Oecologia 48, 93-99 (1981) Rundel, P.W.* ; Rundel, J.A.* ; Ziegler, H.* & Stichler, W. Carbon isotope ratios of central Mexican Crassulaceae in natural and greenhouse environments. Oecologia 38, 45-50 (1979) Rundel, P.W.* ; Stichler, W. ; Zander, R.H.* & Ziegler, H.* Carbon and hydrogen isotope ratios of bryophytes from arid and humid regions. Oecologia 44, 91-94 (1979) Ziegler, I. Sulfite action on ribulosediphosphate carboxylase in the Lichen Pseudevernia furfuracea. Oecologia 29, 63-66 (1977) Osmond, B.* ; Ziegler, H.* ; Stichler, W. & Trimborn, P. Carbon isotope discrimination in alpine succulent plants supposed to be capable of Crassulacean Acid Metabolism (CAM). Oecologia 18, 209-217 (1975) Sankhlá, N.* ; Ziegler, H.* ; Vyas, O.P.* ; Stichler, W. & Trimborn, P. Eco-physiological studies on Indian arid zone plants - V. A. Screening of some species for the C4-pathway of photosynthetic CO2-fixation. Oecologia 21, 123-129 (1975)