@article{fdi:010083336,
  title = {{M}acrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the {K}erguelen {I}slands},
  author = {{C}ott{\'e}, {C}. and {A}riza, {A}. and {B}erne, {A}. and {H}abasque, {J}{\'e}r{\'e}mie and {L}ebourges {D}haussy, {A}nne and {R}oudaut, {G}ildas and {E}spinasse, {B}. and {H}unt, {B}. {P}. {V}. and {P}akhomov, {E}. {A}. and {H}enschke, {N}. and {P}{\'e}ron, {C}. and {C}onchon, {A}. and {K}oedooder, {C}. and {I}zard, {L}. and {C}herel, {Y}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}esopelagic communities are characterized by a large biomass of diverse macrozooplankton and micronekton ({MM}) performing diel vertical migration ({DVM}) connecting the surface to the deeper ocean and contributing to biogeochemical fluxes. {I}n the {S}outhern {O}cean, a prominent {H}igh {N}utrient {L}ow {C}hlorophyll ({HNLC}) and low carbon export region, the contribution of {MM} to the vertical carbon flux of the biological pump remains largely unknown. {F}urthermore, few studies have investigated {MM} communities and vertical flux in naturally iron fertilized areas associated with shallow bathymetry. {I}n this study, we assessed the {MM} community diversity, abundance and biomass in the {K}erguelen {I}sland region, including two stations in the {HNLC} region upstream of the islands, and two stations in naturally iron fertilized areas, one on the {P}lateau, and one downstream of the {P}lateau. {T}he {MM} community was examined using a combination of trawl sampling and acoustic measurements at 18 and 38 k{H}z from the surface to 800 m. {A} conspicuous three-layer vertical system was observed in all areas - a shallow scattering layer, {SSL}, between 10 and 200 m; mid-depth scattering layer, {MSL}, between 200 and 500 m; deep scattering layer, {DSL}, between 500 and 800 m - but communities differing among stations. {W}hile salps ({S}alpa thompsoni) dominated the biomass at the productive {K}erguelen {P}lateau and the downstream station, they were scarce in the {HNLC} upstream area. {I}n addition, crustaceans (mainly {E}uphausia vallentini and {T}hemisto gaudichaudii) were particularly abundant over the {P}lateau, representing a large, although varying, carbon stock in the 0-500 m water layer. {M}esopelagic fish were prominent below 400 m where they formed permanent or migrant layers accounting for the main source of carbon biomass. {T}hrough these spatial and temporal sources of variability, complex patterns of the {MM} vertical distribution and associated carbon content were identified. {T}he total carbon flux mediated by migratory myctophids at the four stations was quantified. {W}hile this flux was likely underestimated, this study identified the main components and mechanisms of active carbon export in the region and how they are modulated by complex topography and land mass effects.},
  keywords = {{M}acrozooplankton ; {M}icronekton ; {V}ertical patterns ; {A}ctive carbon flux ; {S}patio-temporal variability ; {S}cattering layers ; {K}erguelen {P}lateau ; {S}outhern {O}cean ; {KERGUELEN} ; {OCEAN} {AUSTRALE}},
  booktitle = {},
  journal = {{J}ournal of {M}arine {S}ystems},
  volume = {226},
  numero = {},
  pages = {103650 [18 p.]},
  ISSN = {0924-7963},
  year = {2022},
  DOI = {10.1016/j.jmarsys.2021.103650},
  URL = {https://www.documentation.ird.fr/hor/fdi:010083336},
}