@article{fdi:010068229, title = {{T}he impact of long-term hydrocarbon exposure on the structure, activity, and biogeochemical functioning of microbial mats}, author = {{A}ub{\'e}, {J}. and {S}enin, {P}. and {P}ringault, {O}livier and {B}onin, {P}. and {D}eflandre, {B}. and {B}ouchez, {O}. and {B}ru, {N}. and {B}iritxinaga-{E}tchart, {E}. and {K}lopp, {C}. and {G}uyoneaud, {R}. and {G}oni-{U}rriza, {M}.}, editor = {}, language = {{ENG}}, abstract = {{P}hotosynthetic microbial mats are metabolically structured systems driven by solar light. {T}hey are ubiquitous and can grow in hydrocarbon-polluted sites, {O}ur aim is to determine the impact of chronic hydrocarbon contamination on the structure, activity, and functioning of a microbial mat. {W}e compared it to an uncontaminated mat harboring similar geochemical characteristics. {T}he mats were sampled in spring and fall for 2 years. {S}easonal variations were observed for the reference mat: sulfur cycle-related bacteria dominated spring samples, while {C}yanobacteria dominated in autumn. {T}he contaminated mat showed minor seasonal variation; a progressive increase of {C}yanobacteria was noticed, indicating a perturbation of the classical seasonal behavior. {H}ydrocarbon content was the main factor explaining the differences in the microbial community structure; however, hydrocarbonoclastic bacteria were among rare or transient {O}perational {T}axonomic {U}nits ({OTU}s) in the contaminated mat {W}e suggest that in long-term contaminated systems, hydrocarbonoclastic bacteria cannot be considered a sentinel of contamination.}, keywords = {{B}iogeochemical functioning ; {D}iversity ; {H}ydrocarbonoclastic bacteria ; {M}icrobial mats ; {FRANCE} ; {MEDITERRANNEE} ; {BERRE} {ETANG}}, booktitle = {}, journal = {{M}arine {P}ollution {B}ulletin}, volume = {111}, numero = {1-2}, pages = {115--125}, ISSN = {0025-326{X}}, year = {2016}, DOI = {10.1016/j.marpolbul.2016.07.023}, URL = {https://www.documentation.ird.fr/hor/fdi:010068229}, }