@article{fdi:010090561, title = {{C}ross-shore transport and eddies promote large scale response to urban eutrophication [+ {C}orrection, 1 p.]}, author = {{K}essouri, {F}. and {S}utula, {M}. {A}. and {B}ianchi, {D}. and {H}o, {M}. {N}. and {D}amien, {P}. and {M}c{W}illiams, {J}. {C}. and {F}rieder, {C}. {A}. and {R}enault, {L}ionel and {F}renzel, {H}. and {M}c{L}aughlin, {K}. and {D}eutsch, {C}.}, editor = {}, language = {{ENG}}, abstract = {{A} key control on the magnitude of coastal eutrophication is the degree to which currents quickly transport nitrogen derived from human sources away from the coast to the open ocean before eutrophication develops. {I}n the {S}outhern {C}alifornia {B}ight ({SCB}), an upwelling-dominated eastern boundary current ecosystem, anthropogenic nitrogen inputs increase algal productivity and cause subsurface acidification and oxygen ({O}2 ) loss along the coast. {H}owever, the extent of anthropogenic influence on eutrophication beyond the coastal band, and the physical transport mechanisms and biogeochemical processes responsible for these effects are still poorly understood. {H}ere, we use a submesoscale-resolving numerical model to document the detailed biogeochemical mass balance of nitrogen, carbon and oxygen, their physical transport, and effects on offshore habitats. {D}espite management of terrestrial nutrients that has occurred in the region over the last 20 years, coastal eutrophication continues to persist. {T}he input of anthropogenic nutrients promote an increase in productivity, remineralization and respiration offshore, with recurrent {O} 2 loss and p{H} decline in a region located 30-90 km from the mainland. {D}uring 2013 to 2017, the spatially averaged 5-year loss rate across the {B}ight was 1.3 mmol m}, keywords = {{U}rban eutrophication ; {N}itrogen coastal transport ; {O}cean acidification ; {D}eoxygenation ; {ETATS} {UNIS} ; {PACIFIQUE} ; {CALIFORNIE}}, booktitle = {}, journal = {{S}cientific {R}eports - {N}ature}, volume = {14}, numero = {1}, pages = {7240 [17 ] + [{C}orrection, 1 p., vol. 14, 22896, 2024]}, ISSN = {2045-2322}, year = {2024}, DOI = {10.1038/s41598-024-57626-6}, URL = {https://www.documentation.ird.fr/hor/fdi:010090561}, }