@article{fdi:010091184, title = {{D}iel vertical migration and seamount stepping stones promote species connectivity from coastal to offshore insular systems in the {T}ropical {S}outhwestern {A}tlantic}, author = {{T}osetto, {E}. {G}. and {L}ett, {C}hristophe and {N}eumann-{L}eitao, {S}. and {K}och {L}arrouy, {A}riane and {B}arrier, {N}icolas and da {S}ilva, {A}. {C}. and {S}alvetat, {J}. and {B}ertrand, {A}rnaud}, editor = {}, language = {{ENG}}, abstract = {{T}he recruitment of marine species in isolated oceanic island systems can be challenged by prevailing currents, as exemplified by the {T}ropical {S}outhwestern {A}tlantic. {I}n this region, the {F}ernando de {N}oronha ridge hosts several seamounts, the {R}ocas {A}toll and the {F}ernando de {N}oronha {A}rchipelago, which are home to great marine biodiversity. {H}owever, along the ridge, the central branch of the {S}outh {E}quatorial {C}urrent (c{SEC}), flowing westward, poses a challenge to the recruitment of organisms toward {F}ernando de {N}oronha. {T}o unveil critical insights into the intricate processes shaping biodiversity in these insular ecosystems, we use a dispersal {L}agrangian tool to explore the role of diel vertical migration ({DVM}) to depth strata influenced by the {S}outh {E}quatorial {U}ndercurrent ({SEUC}), which flows eastward bellow the c{SEC}, in shaping species dispersal and metacommunity dynamics. {O}ur results show that while not a direct journey, the {DVM} into {SEUC}-influenced strata increases the possibility that the seamounts and the {R}ocas {A}toll act as stepping stones between the continental shelf and {F}ernando de {N}oronha. {P}ropagules of organisms originating primarily from the continental shelf are transported to the western seamounts of the ridge. {U}pon reaching the western seamounts, organisms can find suitable habitats to recruit. {T}he progeny of these communities that migrate to {SEUC}-influenced strata have the opportunity to reach suitable habitats at the {R}ocas {A}toll and the {E}astern seamounts, ultimately connecting to the {F}ernando de {N}oronha archipelago. {T}hese results provide scientific fundaments for the development of a functional network of marine protected areas in the {T}ropical {S}outhwestern {A}tlantic.}, keywords = {{BRESIL} ; {ZONE} {TROPICALE} ; {ATLANTIQUE} {SUD} ; {FERNANDO} {DE} {NORONHA}}, booktitle = {}, journal = {{L}imnology and {O}ceanography}, volume = {[{E}arly access]}, numero = {}, pages = {[14 p.]}, ISSN = {0024-3590}, year = {2024}, DOI = {10.1002/lno.12648}, URL = {https://www.documentation.ird.fr/hor/fdi:010091184}, }