@article{fdi:010042507, title = {{S}easonal and annual variation of carbon exchange in an evergreen {M}editerranean forest in southern {F}rance}, author = {{A}llard, {V}. and {O}urcival, {J}. {M}. and {R}ambal, {S}. and {J}offre, {R}. and {R}ocheteau, {A}lain}, editor = {}, language = {{ENG}}, abstract = {{W}e present 9 years of eddy covariance measurements made over an evergreen {M}editerranean forest in southern {F}rance. {T}he goal of this study was to quantify the different components of the carbon ({C}) cycle, gross primary production ({GPP}) and ecosystem respiration ({R}-eco), and to assess the effects of climatic variables on these fluxes and on the net ecosystem exchange of carbon dioxide. {T}he {P}uechabon forest acted as a net {C} sink of -254 g {C} m(-2) yr(-1), with a {GPP} of 1275 g {C} m(-2) yr(-1) and a {R}-eco of 1021 g {C} m(-2) yr(-1). {O}n average, 83% of the net annual {C} sink occurred between {M}arch and {J}une. {T}he effects of exceptional events such the insect-induced partial canopy defoliation that occurred in spring 2005, and the spring droughts of 2005 and 2006 are discussed. {A} high interannual variability of ecosystem {C} fluxes during summer and autumn was observed but the resulting effect on the annual net {C} budget was moderate. {I}ncreased severity and/or duration of summer drought under climate change do not appear to have the potential to negatively impact the average {C} budget of this ecosystem. {O}n the contrary, factors affecting ecosystem functioning (drought and/or defoliation) during {M}arch-{J}une period may reduce dramatically the annual {C} balance of evergreen {M}editerranean forests.}, keywords = {{CO}2 fluxes ; eddy covariance ; {M}editerranean ecosystem ; {Q}uercus ilex}, booktitle = {}, journal = {{G}lobal {C}hange {B}iology}, volume = {14}, numero = {4}, pages = {714--725}, ISSN = {1354-1013}, year = {2008}, DOI = {10.1111/j.1365-2486.2008.01539.x}, URL = {https://www.documentation.ird.fr/hor/fdi:010042507}, }