@article{fdi:010048200,
  title = {{B}athymetric zonation of modern microborers in dead coral substrates from {N}ew {C}aledonia. {I}mplications for paleodepth reconstructions in {H}olocene corals},
  author = {{C}hazottes, {V}. and {C}abioch, {G}uy and {G}olubic, {S}. and {R}adtke, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}icroboring endoliths were studied in dead modem corals collected at various depths and in growth position on {L}a {S}urprise atoll in {N}ew {C}aledonia. {E}ight taxa of microborers were regularly observed: three cyanobacteria ({H}yella caespitosa, {M}astigocoleus testarum, and {P}lectonema terebrans), two chlorophytes ({O}streobium quekettii and {P}haeophila dendroides) and three fungal forms ({D}odgella priscus, and two unidentified fungi). {T}he relative abundance of each taxon was determined in the modem corals throughout the studied sampling interval (from 0 down to 40 m water depth). {T}his allowed us to propose for the first time a bathymetric model based on microendolith assemblages colonizing in situ hard-substrates of corals. {I}n this model, the occurrence of the cyarrobacteria {H}yella and {M}astigocoleus indicates a bathymetric range from 0 down to a water depth of 3 and 6 m respectively {T}he chlorophyta {O}. quekettii, associated with the cyanobacterium {P}. terebrans and fungi, is dominant from 10 to 40 m depth,which is the lower limit of our sampling. {T}he distribution ranges of individual taxa observed in the dead coral substrates from {N}ew {C}aledonia are much narrower than those reported in the literature for other substrates. {T}he bathymetric model based on distribution of microborers in modem corals was then applied to interpret the trace assemblages of microborers observed in {H}olocene corals collected by drilling on two reef sites of {N}ew {C}aledonia: {L}a {S}urprise islet. in the vicinity of the sampling sites of the modem corals, and the barrier reef of {B}ayes, on the {NE} coast of {G}rande {T}erre. {T}he paleodepth interpretations performed at various levels along the cores allow identification of several shallowing-upward sequences during the last 7000 years of reef growth in {N}ew {C}aledonia. {D}ifferences in the thickness of these sequences between {L}a {S}urprise and {B}ayes sites were interpreted as differences in the space available for accommodation between the two sites, in turn related to the differential subsidence that affected {N}ew {C}aledonia during {H}olocene times. {T}he use of the microendolith trace assemblages in paleodepth reconstructions of {H}olocene reefs from {N}ew {C}aledonia allowed detection of relative sea level variations finer than those deduced from changes in coralgal assemblages.},
  keywords = {{M}icroendoliths ; {T}race assemblages ; {C}oral hard-substrates ; {P}aleodepth ; reconstructions ; {H}olocene reefs ; {N}ew {C}aledonia},
  booktitle = {},
  journal = {{P}alaeogeography {P}alaeoclimatology {P}alaeoecology},
  volume = {280},
  numero = {3-4},
  pages = {456--468},
  ISSN = {0031-0182},
  year = {2009},
  DOI = {10.1016/j.palaeo.2009.06.033},
  URL = {https://www.documentation.ird.fr/hor/fdi:010048200},
}