@article{fdi:010093358,
  title = {{E}nvironmental pressures on {M}ekong fish : insights from temporal functional diversity dynamics},
  author = {{N}uon, {V}. and {C}hea, {R}. and {H}ugueny, {B}ernard and {G}renouillet, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {M}ekong {R}iver faces increasing environmental threats. {T}o understand fish community responses to these threats, we explored the links between functional diversity ({FD}) dynamics and environmental changes across four sites using trait-based methods and fish monitoring data for 347 species. {W}e assessed functional richness ({FR}ic) and divergence ({FD}iv) using standardized effect sizes to investigate the main assembly rules structuring fish communities and used generalized additive models to identify key environmental drivers. {A}fter dam construction, all four sites experienced significant changes in environmental conditions. {D}eterministic processes, particularly environmental filtering, dominated in structuring fish communities. {T}he upstream {L}ao {P}eople's {D}emocratic {R}epublic site ({LPB}) influenced by deterministic and stochastic processes. {T}he {C}ambodia sites in {S}tung {T}reng province ({CST}) and {T}onle {S}ap ({TLS}) {L}ake primarily driven by deterministic process with a decline in {FR}ic and {FD}iv. {C}onversely, the {V}iet {N}am site ({VCM}) seemed primarily influenced by stochastic process with more subtle environmental effects, evidenced by an increase in {FR}ic and {FD}iv over time. {T}he upper sites ({LPB}, {CST}, and {TLS}) displayed a distinct seasonal pattern in {FD} indices, with values decreasing during the dry season and increasing during the wet season. {C}onversely, the lower site ({VCM}) exhibited the opposite. {W}ater level emerged as the key driver across all sites, with temperature and total nitrogen as secondary drivers. {D}am impacts and other anthropogenic factors not included in our analyses (e.g., unsustainable fishing and habitat degradation) probably contributed to the observed changes in {FD} at specific sites. {T}hese findings highlight potential strategies for conservation, offering national and regional practitioners an opportunity to develop and refine river management plans.},
  keywords = {{M}ekong {R}iver ; {C}ommunity assembly ; {F}unctional richness ; {F}unctional divergence ; {F}reshwater fish ; {E}nvironmental change ; {LAOS} ; {CAMBODGE} ; {VIET} {NAM} ; {MEKONG} {COURS} {D}'{EAU}},
  booktitle = {},
  journal = {{J}ournal of {E}nvironmental {M}anagement},
  volume = {380},
  numero = {},
  pages = {125138 [11 p.]},
  ISSN = {0301-4797},
  year = {2025},
  DOI = {10.1016/j.jenvman.2025.125138},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093358},
}