@article{fdi:010072433, title = {{D}o functional groups of planktonic copepods differ in their ecological niches ?}, author = {{B}enedetti, {F}. and {V}ogt, {M}. and {R}ighetti, {D}. and {G}uilhaumon, {F}ran{\c{c}}ois and {A}yata, {S}. {D}.}, editor = {}, language = {{ENG}}, abstract = {{A}im: {T}o assess the degree of overlap between the environmental niches of marine planktonic copepods and test if the distribution of copepod functional groups differs across environmental gradients. {L}ocation: {T}he {M}editerranean {S}ea. {M}ethods: {F}unctional groups were defined based on clustering of functional traits in 106 marine copepod species using a multivariate ordination analysis. {F}unctional traits included maximum body length, feeding mode, spawning strategy and trophic group. {S}imultaneously, the global distribution of the species was used to model their environmental niches with six environmental variables. {F}or each of these predictors, four niche parameters were derived from the univariate response curve of each species to summarise their environmental preferences and ordinate the species in niche space through a {PCA}. {F}inally, the differences in the position in niche space of functional groups were tested with variance analysis. {R}esults: {W}e identified seven copepod functional groups with different distributions along the environmental gradients covered by our study. {W}hile carnivorous functional groups were affiliated with oligotrophic and tropical conditions, large and small current-feeding herbivores are associated with colder, more seasonally varying and productive conditions. {S}mall cruising detritivores and other small current-feeding herbivores were not affiliated with specific conditions as their constituting species were scattered in niche space. {M}ain conclusions: {S}ince copepod functional groups occupy distinct ecological niches, ecosystem processes related to these groups are expected to vary across environmental gradients. {C}onditions favouring large current-feeding herbivores should allow for enhanced fluxes of energy and nutrients through {M}editerranean {S}ea ecosystems, while such fluxes should be weakened where large carnivores and small passive ambush-feeding copepods dominate. {O}ur study supports the development of trait-based zooplankton functional groups in marine ecosystem models.}, keywords = {copepods ; environmental niche ; functional groups ; trait biogeography ; zooplankton ; {MEDITERRANEE}}, booktitle = {}, journal = {{J}ournal of {B}iogeography}, volume = {45}, numero = {3}, pages = {604--616}, ISSN = {0305-0270}, year = {2018}, DOI = {10.1111/jbi.13166}, URL = {https://www.documentation.ird.fr/hor/fdi:010072433}, }