@article{fdi:010086785,
  title = {54 years of microboring community history explored by machine learning in a massive coral from {M}ayotte ({I}ndian {O}cean)},
  author = {{A}laguarda, {D}. and {B}rajard, {J}. and {C}oulibaly, {G}. and {C}anesi, {M}. and {D}ouville, {E}. and {L}e {C}ornec, {F}lorence and {L}elabousse, {C}. and {T}ribollet, {A}line},
  editor = {},
  language = {{ENG}},
  abstract = {{C}oral reefs are increasingly in jeopardy due to global changes affecting both reef accretion and bioerosion processes. {B}ioerosion processes dynamics in dead reef carbonates under various environmental conditions are relatively well understood but only over a short-term limiting projections of coral reef evolution by 2100. {I}t is thus essential to monitor and understand bioerosion processes over the long term. {H}ere we studied the assemblage of traces of microborers in a coral core of a massive {D}iploastrea sp. from {M}ayotte, allowing us to explore the variability of its specific composition, distribution, and abundance between 1964 and 2018. {O}bservations of microborer traces were realized under a scanning electron microscope ({SEM}). {T}he area of coral skeleton sections colonized by microborers (a proxy of their abundance) was estimated based on an innovative machine learning approach. {T}his new method with 93% accuracy allowed analyzing rapidly more than a thousand {SEM} images. {O}ur results showed an important shift in the trace assemblage composition that occurred in 1985, and a loss of 90% of microborer traces over the last five decades. {O}ur data also showed a strong positive correlation between microborer trace abundance and the coral bulk density, this latter being particularly affected by the interannual variation of temperature and cumulative insolation. {A}lthough various combined environmental factors certainly had direct and/or indirect effects on microboring species before and after the breakpoint in 1985, we suggest that rising sea surface temperature, rainfall, and the loss of light over time were the main factors driving the observed trace assemblage change and decline in microborer abundance. {I}n addition, the interannual variability of sea surface temperature and instantaneous maximum wind speed appeared to influence greatly the occurrence of green bands. {W}e thus stress the importance to study more coral cores to confirm the decadal trends observed in the {D}iploastrea sp. from {M}ayotte and to better identify the main factors influencing microboring communities, as the decrease of their abundance in living massive stress tolerant corals may have important consequences on their resilience.},
  keywords = {coral growth ; microborers abundance ; euendolith traces ; assemblage ; shift ; green bands ; {M}ayotte ; machine learning ; global change ; {MAYOTTE} ; {OCEAN} {INDIEN}},
  booktitle = {},
  journal = {{F}rontiers in {M}arine {S}cience},
  volume = {9},
  numero = {},
  pages = {899398 [21 p.]},
  year = {2022},
  DOI = {10.3389/fmars.2022.899398},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086785},
}