Tapajos Primary Forest Study in Context: Comparison of Tapajos Data for Carbon Budgets, Climatic Forcing and Forest Demography Across Amazonia.
Steven
C.
Wofsy, Harvard University, scw@io.harvard.edu
(Presenting)
Scott
R.
Saleska, Harvard University, saleska@fas.harvard.edu
James
William
Munger, Harvard University, jwm@io.harvard.edu
Lucy
Hutyra, Harvard University, lhutyra@fas.harvard.edu
Gregory
W.
Santoni, Harvard University, santoni@fas.harvard.edu
Victoria
Y.
Chow, Harvard University, vchow@fas.harvard.edu
Bruce
C.
Daube, Harvard University, bcd@io.harvard.edu
John
W.
Budney, Harvard University, jwb@io.harvard.edu
Alfram
V.
Bright, Harvard University, avb@io.harvard.edu
Michael
M.
Keller, University of New Hampshire, michael.keller@unh.edu
Michael
William
Palace, University of New Hampshire, palace@kaos.sr.unh.edu
Patrick
Michael
Crill, University of New Hampshire, patrick.crill@unh.edu
Hudson
Silva, University of New Hampshire, hsilva@kaos.sr.unh.edu
Michael
L.
Goulden, University of California, Irvine, mgoulden@uci.edu
Scott
Dennis
Miller, University of California, Irvine, sdmiller@uci.edu
Humberto
Ribeiro da
Rocha, USP, humberto@model.iag.usp.br
Plínio
Barbosa de
Camargo, USP/CENA, pcamargo@cena.usp.br
Simone
Aparecida
Vieira, USP/CENA, savieira@cena.usp.br
Humberto
Ribeiro da
Rocha, USP, humberto@model.iag.usp.br
Volker
Kirchhoff, INPE, kir@dge.inpe.br
David
Roy
Fitzjarrald, SUNY Albany, fitz@asrc.cestm.albany.edu
Ricardo
Sakai, SUNY Albany, sakai@asrc.cestm.albany.edu
Osvaldo
Luiz Leal de
Moraes, UFFM, moraes@mail1.ufsm.br
Three years of measurements of carbon, water, and heat fluxes, and four years of forest ecological measurements, are reviewed for the km 67 "Primary Forest" site in Flona Tapajos. This forest is approximately in carbon balance, probably losing a small amount of carbon, even though internally the major pools of organic matter and the demographic distribution of forest trees are changing. We compare carbon budgets from tower fluxes, surface fluxes, and ecological surveys at the site, and we compare carbon budgets at the site with adjacent measurements (km 83). We also compare the distribution of tree biomass across size classes with other sites in Amazonia, and we examine CO2 and CO gradients from the coast to the interior of Amazonia. We summarize these comparisons with an hypothesis that relates the structure and annual carbon balances to a small number of biogeographic factors centered on disturbance: rate of recovery of the ecosystem and it's component parts from disturbance, mean growing conditions for the forest, and variance of environmental forcing. This hypothesis will be tested during the next major El Nino drought.
Submetido por Gregory Winn Santoni em 18-MAR-2004
Tema Científico do LBA: CD (Armazenamento e Trocas de Carbono)