@article{fdi:010070253, title = {{S}eabirds supply nitrogen to reefbuilding corals on remote {P}acific islets}, author = {{L}orrain, {A}nne and {H}oulbr{\`e}que, {F}anny and {B}enzoni, {F}rancesca and {B}arjon, {L}. and {T}remblay-{B}oyer, {L}. and {M}enk{\`e}s, {C}hristophe and {G}illikin, {D}. {P}. and {P}ayri, {C}laude and {J}ourdan, {H}erv{\'e} and {B}oussarie, {G}. and {V}erheyden, {A}. and {V}idal, {E}ric}, editor = {}, language = {{ENG}}, abstract = {{S}eabirds concentrate nutrients from large marine areas on their nesting islands playing an important ecological role in nutrient transfer between marine and terrestrial ecosystems. {H}ere we investigate the role of guano on corals reefs across scales by analyzing the stable nitrogen isotopic (delta {N}-15) values of the scleractinian coral {P}ocillopora damicornis on fringing reefs around two {P}acific remote islets with large seabird colonies. {M}arine stations closest to the seabird colonies had higher nitrate + nitrite concentrations compared to more distant stations. {C}oral and zooxanthellae delta {N}-15 values were also higher at these sites, suggesting that guano-derived nitrogen is assimilated into corals and contributes to their nitrogen requirements. {T}he spatial extent of guano influence was however restricted to a local scale. {O}ur results demonstrate that seabird-derived nutrients not only spread across the terrestrial ecosystem, but also affect components of the adjacent marine ecosystem. {F}urther studies are now needed to assess if this nutrient input has a positive or negative effect for corals. {S}uch studies on remote islets also open fresh perspectives to understand how nutrients affect coral reefs isolated from other anthropogenic stressors.}, keywords = {{PACIFIQUE} ; {NOUVELLE} {CALEDONIE} ; {CHESTERFIELD} ; {MER} {DE} {CORAIL} ; {ENTRECASTEAUX}}, booktitle = {}, journal = {{S}cientific {R}eports - {N}ature}, volume = {7}, numero = {}, pages = {art. 3721 [11 p.]}, ISSN = {2045-2322}, year = {2017}, DOI = {10.1038/s41598-017-03781-y}, URL = {https://www.documentation.ird.fr/hor/fdi:010070253}, }