@article{PAR00011186, title = {{F}ast mineralization of land-born {C} in inland waters : first experimental evidences of aquatic priming effect}, author = {{G}uenet, {B}. and {D}anger, {M}. and {H}arrault, {L}. and {A}llard, {B}. and {J}auset-{A}lcala, {M}. and {B}ardoux, {G}. and {B}enest, {D}. and {A}bbadie, {L}uc and {L}acroix, {G}.}, editor = {}, language = {{ENG}}, abstract = {{I}n the context of global change, eroded soil carbon fate and its impact on aquatic ecosystems {CO}2 emissions are subject to intense debates. {I}n particular, soil carbon mineralization could be enhanced by its interaction with autochthonous carbon, a process called priming effect, but experimental evidences of this process are scarce. {W}e measured in a microcosm experiment simulating oligo-mesotrophic and eutrophic aquatic conditions how quickly soil organic matter ({SOM}) sampled in diverse ecosystems was mineralized as compared to mineralization within soil horizons. {F}or both nutrient loads, {C}-13-glucose was added to half of the microcosms to simulate exudation of labile organic matter ({LOM}) by phytoplankton. {E}ffects of {LOM} on soil mineralization were estimated using the difference in delta {C}-13 between the {SOM} and the glucose. {A}fter 45 days of incubation, the mean {SOM} mineralization was 63% greater in the aquatic context, the most important {CO}2 fluxes arising during the first days of incubation. {N}utrients had no significant effect on {SOM} mineralization and glucose addition increased by 12% the mean {SOM} mineralization, evidencing the occurrence of a priming effect.}, keywords = {{S}oil erosion ; {O}ligo-mesotrophic systems ; {E}utrophic systems ; {C}arbon cycle ; {A}quatic priming effect ; {F}reshwater ecosystems}, booktitle = {}, journal = {{H}ydrobiologia}, volume = {721}, numero = {1}, pages = {35--44}, ISSN = {0018-8158}, year = {2014}, DOI = {10.1007/s10750-013-1635-1}, URL = {https://www.documentation.ird.fr/hor/{PAR}00011186}, }