Journal Article 2 photosynthetic gas exchange 1406-65-1 1 Acanthochronology 1 CAM photosynthesis 1 Cactaceae 1 Chlorophyll 1 mehr ... Isotopes 1 Research Support, Non-U.S. Gov't 1 Review 1 chlorophyll fluorescence 1 chlorophyll/carotenoid index 1 drought adaptation 1 eastern white pine (Pinus strobus L.) 1 elevated temperature 1 intraspecific variation 1 photochemical reflectance index 1 pigments 1 plant water relations 1 provenances 1 stable isotope ratios 1 stem succulents 1 stress physiology 1 temperature-free-air-controlled enhancement (T-FACE) 1 weniger ...