FN Archimer Export Format PT J TI Seabirds supply nitrogen to reefbuilding corals on remote Pacific islets BT AF LORRAIN, Anne HOULBREQUE, Fanny BENZONI, Francesca BARJON, Lucie TREMBLAY-BOYER, Laura MENKES, Christophe GILLIKIN, David P. PAYRI, Claude JOURDAN, Herve BOUSSARIE, Germain VERHEYDEN, Anouk VIDAL, Eric AS 1:1;2:2;3:2,3;4:1;5:4;6:5;7:6;8:2;9:7;10:2;11:6;12:7; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:; C1 IFREMER, IRD, CNRS, LEMAR UMR UBO 6539, Noumea 98848, New Caledonia. IRD, ENTROPIE UMR9220, Lab Excellence CORAIL, Noumea 98848, New Caledonia. Univ Milano Bicocca, Dept Biotechnol & Biosci, Piazza Sci 2, I-20126 Milan, Italy. Pacific Community, Ocean Fisheries Programme, BP D5, Noumea 98848, New Caledonia. Univ Paris 06, Sorbonne Univ, UPMC, IRD,CNRS,MNHN,LOCEAN UMR 7159, BP A5, Noumea 98848, New Caledonia. Union Coll, Dept Geol, 807 Union St, Schenectady, NY 12308 USA. Aix Marseille Univ, Avignon Univ, Inst Mediterraneen Biodiversite & Ecol Marine & C, CNRS,IRD,Ctr IRD Noumea, BP A5, Noumea 98848, New Caledonia. C2 IRD, FRANCE IRD, FRANCE UNIV MILANO BICOCCA, ITALY PACIFIC COMMUNITY, FRANCE UNIV PARIS 06, FRANCE UNION COLL, USA UNIV AIX MARSEILLE, FRANCE UM LEMAR IN DOAJ IF 4.122 TC 49 UR https://archimer.ifremer.fr/doc/00391/50239/50878.pdf https://archimer.ifremer.fr/doc/00391/50239/50879.pdf LA English DT Article CR CHEST BO Alis AB Seabirds concentrate nutrients from large marine areas on their nesting islands playing an important ecological role in nutrient transfer between marine and terrestrial ecosystems. Here 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 Pocillopora damicornis on fringing reefs around two Pacific remote islets with large seabird colonies. Marine stations closest to the seabird colonies had higher nitrate + nitrite concentrations compared to more distant stations. Coral 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. The spatial extent of guano influence was however restricted to a local scale. Our results demonstrate that seabird-derived nutrients not only spread across the terrestrial ecosystem, but also affect components of the adjacent marine ecosystem. Further studies are now needed to assess if this nutrient input has a positive or negative effect for corals. Such studies on remote islets also open fresh perspectives to understand how nutrients affect coral reefs isolated from other anthropogenic stressors. PY 2017 PD JUL SO Scientific Reports SN 2045-2322 PU Nature Publishing Group VL 7 IS 3721 UT 000403413700083 BP 1 EP 11 DI 10.1038/s41598-017-03781-y ID 50239 ER EF