Luyssaert Reading Support

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Presentation transcript:

Luyssaert Reading Support Critical Zone Science InTeGrate Teaching Team (Washburne, UA) unused Copyrighted figures can be found at: Global Change Biology (GCB), Volume 13, Issue 12, December 2007, Pages: 2509–2537, S. LUYSSAERT, et al. Version of Record online : 21 AUG 2007, DOI: 10.1111/j.1365-2486.2007.01439.x

GPP = NPP + Ra (always a sink) NOTATION GPP = NPP + Ra (always a sink) NPP = fNPP + wNPP + rNPP + mNPP = biomass NEP = NPP – Rh GPP = NEP + Re (eddy covariance) Re = Ra + Rh; Rs = Ra + Rh (below ground part) Respiration: autotrophic (plants) or heterotrophic (microbial) Conceptual understanding based on carbon cycle diagrams but hard to measure most of these components. Students will be reading this article for homework so this is just an introduction. CO2 balance of boreal, temperate, and tropical forests derived from a global database S. LUYSSAERT. et al., Global Change Biology, Aug 21, 2007 after Luyssaert, etal, GCB, 2007

How much is there? Terrestrial Ecosystems – Net primary Production Can be factor of 2 uncertainty in rates! http://esajournals.onlinelibrary.wiley.com/hub/issue/10.1002/ecm.2009.79.issue-3/ 3926591180194 Feb 21, 2017 John Wiley and Sons Ecological Monographs The global distribution of net primary production: resolving the paradox Michael A. Huston,Steve Wolverton Aug 1, 2009 Huston & Wolverton, Ecol .Mono, 79(3), 2009 By Permission: J. Wiley Lic. 3926591180194, 8/9/16

Global Ecosystems – Gross Primary Production How much is there? Global Ecosystems – Gross Primary Production AREA NPP Global % ~37 GTC Modified from Wikipedia datatable Data from From R.H. Whittaker, quoted in Peter Stiling (1996), "Ecology: Theories and Applications" (Prentice Hall). https://en.wikipedia.org/wiki/Primary_production Originally found at http://bio1903.nicerweb.com/Locked/media/ch54/SAVE/npp.html but link is dead Somewhat different results can be found in Fig. 1 of Huston & Wolverton, Ecol .Mono, 79(3), 2009 http://esajournals.onlinelibrary.wiley.com/hub/issue/10.1002/ecm.2009.79.issue-3/ ~5.1 x 1014 m2 => 168 GTC/y Data after RH Whitaker as found on Wiki/Primary_production