@article{fdi:010052858, title = {{P}riming effect : bridging the gap between terrestrial and aquatic ecology}, author = {{G}uenet, {B}. and {D}anger, {M}. and {A}bbadie, {L}uc and {L}acroix, {G}.}, editor = {}, language = {{ENG}}, abstract = {{U}nderstanding how ecosystems store or release carbon is one of ecology's greatest challenges in the 21st century. {O}rganic matter covers a large range of chemical structures and qualities, and it is classically represented by pools of different recalcitrance to degradation. {T}he interaction effects of these pools on carbon cycling are still poorly understood and are most often ignored in global-change models. {S}oil scientists have shown that inputs of labile organic matter frequently tend to increase, and often double, the mineralization of the more recalcitrant organic matter. {T}he recent revival of interest for this phenomenon, named the priming effect, did not cross the frontiers of the disciplines. {I}n particular, the priming effect phenomenon has been almost totally ignored by the scientific communities studying marine and continental aquatic ecosystems. {H}ere we gather several arguments, experimental results, and field observations that strongly support the hypothesis that the priming effect is a general phenomenon that occurs in various terrestrial, freshwater, and marine ecosystems. {F}or example, the increase in recalcitrant organic matter mineralization rate in the presence of labile organic matter ranged from 10% to 500% in six studies on organic matter degradation in aquatic ecosystems. {C}onsequently, the recalcitrant organic matter mineralization rate may largely depend on labile organic matter availability, influencing the {CO}2 emissions of both aquatic and terrestrial ecosystems. {W}e suggest that (1) recalcitrant organic matter may largely contribute to the {CO}2 emissions of aquatic ecosystems through the priming effect, and (2) priming effect intensity may be modified by global changes, interacting with eutrophication processes and atmospheric {CO}2 increases. {F}inally, we argue that the priming effect acts substantially in the carbon and nutrient cycles in all ecosystems. {W}e outline exciting avenues for research, which could provide new insights on the responses of ecosystems to anthropogenic perturbations and their feedbacks to climatic changes.}, keywords = {aquatic organic matter ; global carbon cycle ; global changes ; labile ; organic matter ; microbial ecology ; priming effect ; recalcitrant organic ; matter ; terrestrial organic matter}, booktitle = {}, journal = {{E}cology}, volume = {91}, numero = {10}, pages = {2850--2861}, ISSN = {0012-9658}, year = {2010}, URL = {https://www.documentation.ird.fr/hor/fdi:010052858}, }