Arctic canopy photosynthetic efficiency enhanced under diffuse light, linked to a reduction in the fraction of the canopy in deep shade

• Published in: New Phytologist
• Main Authors: Williams, Mathew, Rastetter, Edward B., Van der Pol, Laura, Shaver, Gaius R.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2014
• Subjects: Arctic; Laskan; Tundra
• Online Access: http://dx.doi.org/10.1111/nph.12750; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fnph.12750; https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.12750; https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.12750; https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.12750

Summary We investigated how radiation conditions within a tundra canopy were linked to canopy photosynthesis, and how this linkage explained photosynthetic sensitivity to sky conditions, that is total radiation and its diffuse fraction. We measured within canopy radiation at leaf scales and net CO 2...