@article{fdi:010061869,
  title = {{G}lacial flood pulse effects on benthic fauna in equatorial high-{A}ndean streams},
  author = {{C}auvy {F}rauni{\'e}, {S}. and {A}ndino, {P}. and {E}spinosa, {R}. and {C}alvez, {R}oger and {A}nthelme, {F}abien and {J}acobsen, {D}. and {D}angles, {O}livier},
  editor = {},
  language = {{ENG}},
  abstract = {{E}quatorial glacier-fed streams present unique hydraulic patterns when compared to glacier-fed observed in temperate regions as the main variability in discharge occurs on a daily basis. {T}o assess how benthic fauna respond to these specific hydraulic conditions, we investigated the relationships between flow regime, hydraulic conditions (boundary {R}eynolds number, {R}e*), and macroinvertebrate communities (taxon richness and abundance) in a tropical glacier-fed stream located in the high {E}cuadorian {A}ndes (> 4000m). {B}oth physical and biotic variables were measured under four discharge conditions (base-flow and glacial flood pulses of various intensities), at 30 random points, in two sites whose hydraulic conditions were representative to those found in other streams of the study catchment. {W}hile daily glacial flood pulses significantly increased hydraulic stress in the benthic habitats (appearance of {R}e*>2000), low stress areas still persisted even during extreme flood events ({R}e*<500). {I}n contrast to previous research in temperate glacier-fed streams, taxon richness and abundance were not significantly affected by changes in hydraulic conditions induced by daily glacial flood pulses. {H}owever, we found that a few rare taxa, in particular rare ones, preferentially occurred in highly stressed hydraulic habitats. {M}onte-{C}arlo simulations of benthic communities under glacial flood reduction scenarios predicted that taxon richness would be significantly reduced by the loss of high hydraulic stress habitats following glacier shrinking. {T}his pioneer study on the relationship between hydraulic conditions and benthic diversity in an equatorial glacial stream evidenced unknown effects of climate change on singular yet endangered aquatic systems.},
  keywords = {tropical ; glacier ; stream ; flood ; macroinvertebrate ; {R}eynolds number ; {EQUATEUR} ; {ANDES}},
  booktitle = {},
  journal = {{H}ydrological {P}rocesses},
  volume = {28},
  numero = {6},
  pages = {3008--3017},
  ISSN = {0885-6087},
  year = {2014},
  DOI = {10.1002/hyp.9866},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061869},
}