@article{fdi:010088894,
  title = {{T}axonomic and functional diversity of subtidal benthic communities associated with hard substrates at {C}rozet archipelago (sub-{A}ntarctic, {S}outhern {O}cean)},
  author = {{L}eli{\'e}vre, {Y}. and {S}pecq, {L}. and {L}amy, {T}homas and {B}oy{\'e}, {A}. and {D}owney, {R}. {V}. and {S}auc{\`e}de, {T}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}ub-{A}ntarctic coastal marine ecosystems harbor rich and diverse benthic communities. {D}espite their ecological uniqueness and vulnerability to global changes, studies on benthic communities remain limited. {U}sing underwater video-imagery, we investigated the taxonomic and functional diversity of benthic communities associated with hard substrates at {B}aie du {M}arin ({I}le de la {P}ossession, {C}rozet archipelago). {T}he {B}aie du {M}arin species richness and diversity were additively partitioned to evaluate spatial patterns of species through the following spatial scales: within images, among images within transects, and among transects. {W}e analyzed imagery data from seven transects located at different sites inside {B}aie du {M}arin and covering contrasting natural rocky habitats and underwater artificial cable substrates. {A} total of 50 faunal (mainly represented by {E}chinodermata and {P}orifera phyla) and 14 algae (mainly represented by {R}hodophyta phylum) taxa were identified. {R}ocky substrates were dominated by high densities of the polychaetes {P}arasabella sp. and {L}anice marionensis, whereas submarine cables were dominated by high densities of the bivalve {K}idderia sp. attached to macroalgae. {O}ur results show contrasted distribution patterns in the faunal and algal assemblages within the {B}aie du {M}arin, with significant ecological differences between submarine cables and natural rocky substrates. {L}arger spatial scale (i.e., among transects) accounted for most of the bay richness and diversity, highlighting a high-level of habitat heterogeneity within the bay. {T}hrough a trait-based approach, our findings revealed that {C}rozet benthic communities are characterized by low functional richness, evenness, and redundancy, highlighting a potential vulnerability to current and future natural and anthropogenic changes. {T}his study provides a novel bentho-ecological baseline for future assessments of natural and anthropogenic impacts on the marine environment of the {C}rozet archipelago; and for the conservation management of these remote habitats that make part of the {F}rench {S}outhern {T}erritories {M}arine {P}rotected {A}rea, recently inscribed on the {UNESCO} {W}orld {H}eritage list.},
  keywords = {{S}outhern {O}cean ; sub-{A}ntarctic ; {C}rozet ; benthos ; community assembly ; trait-based approach ; underwater imagery ; submarine cable ; {TAAF} ; {CROZET} ; {OCEAN} {AUSTRAL}},
  booktitle = {},
  journal = {{F}rontiers in {M}arine {S}cience},
  volume = {10},
  numero = {},
  pages = {1291038 [28 ]},
  year = {2023},
  DOI = {10.3389/fmars.2023.1291038},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088894},
}