@article{fdi:010071020,
  title = {{D}o benthic invertebrates use hyporheic refuges during streambed drying ? {A} manipulative field experiment in nested hyporheic flowpaths},
  author = {{M}aazouzi, {C}. and {G}alassi, {D}. and {C}laret, {C}. and {C}ellot, {B}. and {F}iers, {F}. and {M}artin, {D}idier and {M}armonier, {P}. and {D}ole-{O}livier, {M}. {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he existence of resilience mechanisms related to a disturbance, such as invertebrate migrations into the hyporheic zone ({HZ}, saturated subsurface interstices), promotes persistence of benthic communities in river ecosystems. {W}ater exchanges through the {HZ}, which influence the distribution of biota, are heterogeneous at different scales, determining nested hyporheic flowpaths. {T}he effect of these nested exchanges on the use of the hyporheic refuges by benthic invertebrates is still unknown. {W}e simulated streambed drying in a stream section where hydrological exchanges were considered at riffle (upstream or downstream of riffles) and floodplain (downstream end of a floodplain) scales. {P}hysicochemical indicators determined that local hyporheic flowpaths (up-and downwelling zones) were nested in a large-scale downwelling section of the river. {I}n this situation, the effect of 24 h of experimental drying on the distribution of invertebrates was examined at three sediment depths to follow their migrations into the {HZ}. {W}hereas invertebrate assemblages did not change in the control channel, abundance of benthic invertebrate increased in the {HZ} of the impact channel (up to seven-fold). {C}hanges occurred rapidly (15-24 h) and only upstream of riffle where surface water down-welled. {T}he migration was taxon-specific and concerned the most abundant benthic taxa that temporarily colonize the {HZ} ("temporary hyporheos," e.g., {L}euctra cf. fusca, {B}aetis sp., {C}aenis sp., {O}rthocladiinae, {T}anypodinae). {I}n the context of climate change, hyporheic refuge use will promote persistence of communities facing the increasing frequency of extreme hydrological events. {I}mproved knowledge about the distribution and function of these refuges is becoming crucial for river managers.},
  keywords = {geomorphology ; hyporheic exchanges ; invertebrates ; nested flowpaths ; refuge ; streambed drying ; {FRANCE} ; {DROME}},
  booktitle = {},
  journal = {{E}cohydrology},
  volume = {10},
  numero = {6},
  pages = {e1865 [26 p.]},
  ISSN = {1936-0584},
  year = {2017},
  DOI = {10.1002/eco.1865},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071020},
}