@article{fdi:010079842, title = {{M}ulti-scale interaction processes modulate the population response of a benthic species to global warming}, author = {{T}homas, {Y}oann and {R}azafimahefa, {N}. {R}. and {M}enesguen, {A}. and {B}acher, {C}.}, editor = {}, language = {{ENG}}, abstract = {{M}arine organisms are currently experiencing an unprecedented rate of climatic warming, which affects their biogeography and threatens marine ecosystem integrity. {T}o understand how benthic species will respond to ongoing seawater warming, we assessed the relative importance of processes acting at different scales using an individual-based modelling approach. {O}ur model integrates: (1) at the individual scale, interactions between the environment, metabolism and ontogenic transitions; (2) at the habitat scale, competition for space at settlement and mortality; and (3) at the regional scale, larval dispersal and connectivity between habitats. {W}e focused on a coastal area in the {N}orth-{E}ast {A}tlantic that has experienced a significant seawater warming trend over recent decades. {W}e built and ran a population dynamics model for the blue mussel ({M}ytilus edulis) in this area, which is a known biogeographic boundary zone. {W}e then compared the response for a reference scenario and a {RCP}8.5 temperature projection for 2100. {W}e found that (1) increase in seawater temperature would result in a decrease in average biomass associated with a change in recruitment phenology; (2) response to seawater warming is not spatially homogeneous, showing the importance of processes at the habitat scale; (3) connectivity clearly limits the consequences of warming compared with other regulation processes; and (4) larval supply does not seem to be a limiting factor regulating population biomass. {T}he use of such generic models would therefore be very valuable for guiding and optimizing research efforts and supporting the implementation of management and conservation measures.}, keywords = {{I}ndividual-based modelling ; {C}limate scenario ; {C}onnectivity ; {D}ynamic ; {E}nergy {B}udget ; {M}ussel ; {H}abitat ; {B}iogeography ; {ODD} ; {ATLANTIQUE} {NORD} {EST}}, booktitle = {}, journal = {{E}cological {M}odelling}, volume = {436}, numero = {}, pages = {109295 [14 p.]}, ISSN = {0304-3800}, year = {2020}, DOI = {10.1016/j.ecolmodel.2020.109295}, URL = {https://www.documentation.ird.fr/hor/fdi:010079842}, }