Crassulacean acid metabolism in the shade. Studies on an epiphytic fern, Pyrrosia longifolia, and other rainforest species from Australia

@article{Winter1986CrassulaceanAM,
  title={Crassulacean acid metabolism in the shade. Studies on an epiphytic fern, Pyrrosia longifolia, and other rainforest species from Australia},
  author={Klaus Winter and C. Barry Osmond and Kerry T. Hubick},
  journal={Oecologia},
  year={1986},
  volume={68},
  pages={224-230}
}
Crassulacean acid metabolism (CAM) was studied in a tropical epiphytic fern, Pyrrosia longifolia, from a fully sun-exposed and from a very shaded site in Northern Queensland, Australia. Measurements of instantaneous net CO2 exchange showed carbon gain via CO2 dark fixation with some net CO2 uptake also occuring during late afternoon, in both sun and shade fronds. Maximum rates of net CO2 uptake and the nocturnal increase in titratable acidity were lower in shade than in sun fronds. δ13C values… CONTINUE READING
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