@article{fdi:010061905,
  title = {{Z}ooplankton size and distribution within mesoscale structures in the {M}ozambique {C}hannel : a comparative approach using the {TAPS} acoustic profiler, a multiple net sampler and {Z}oo{S}can image analysis},
  author = {{L}ebourges {D}haussy, {A}nne and {H}uggett, {J}. and {O}ckhuis, {S}. and {R}oudaut, {G}. and {J}osse, {E}rwan and {V}erheye, {H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}wo surveys were conducted in the {M}ozambique {C}hannel in {N}ovember 2009 and {A}pril/{M}ay 2010 to study the influence of mesoscale eddies on the zooplanktonic component of the ecosystem. {T}hree complementary methods were used to sample zooplankton: (1) hydro-acoustics with a {TAPS}(({TM})) multi-frequency zooplankton profiler; (2) in situ biological sampling using a {M}ultinet with samples processed via the classical settled biovolume technique; (3) {Z}oo{S}can image analysis which determines biovolume, size and taxonomic composition. {T}his approach presented an ideal opportunity to compare the results of these different methods which highlighted a large overlap in their detectable size range. {E}ach method favoured a particular size fraction of the population, i.e. {TAPS} for the microzooplankton (<0.1 mm {ESR}) and the {M}ultinet and {Z}oo{S}can for larger sizes (>3 mm {ESR}). {I}n the case of the 2009 cruise, a well-established cyclone-anticyclone dipole was sampled, with results clearly indicating a higher concentration of zooplankton in the cyclonic eddy compared to the anticyclonic counterpart. {T}he {TAPS} also detected high surface (0-22 m) concentrations of what appeared to be microzooplankton or marine snow in the cyclone. {I}n 2010, the eddy field was less defined and more spatially variable compared to that in 2009. {T}wo cyclonic and anticyclonic features were sampled during the cruise, each with different life histories and levels of stability. {R}esults were inconsistent compared to those of 2009 and dependent on the size component of the population, with both cyclonic and anticyclonic features capable of having higher planktonic biomass. {D}ifferences in species composition between these mesoscale features were not too different and mainly a matter of relative biovolume. {L}ess well formed eddy fields, particularly in the mid-{M}ozambique {C}hannel, therefore appear to result in indistinct vertical and horizontal zooplankton distribution patterns.},
  keywords = {{M}ozambique {C}hannel ; {Z}ooplankton ; {TAPS} ; {A}coustics ; {M}ultinet ; {Z}oo{S}can ; {E}ddies ; {MOZAMBIQUE} {CANAL} ; {OCEAN} {INDIEN}},
  booktitle = {{T}he {M}ozambique channel : mesoscale dynamics and ecosystem responses},
  journal = {{D}eep-{S}ea {R}esearch {P}art {II}.{T}opical {S}tudies in {O}ceanography},
  volume = {100},
  numero = {{N}o sp{\'e}cial},
  pages = {136--152},
  ISSN = {0967-0645},
  year = {2014},
  DOI = {10.1016/j.dsr2.2013.10.022},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061905},
}