Open AccessBiotic and abiotic interactions between surface and interstitial systems in rivers
Author(s) -
Plénet Sandrine,
Gibert J.,
Marmonier P.
Publication year - 1995
Publication title -
ecography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.973
H-Index - 128
eISSN - 1600-0587
pISSN - 0906-7590
DOI - 10.1111/j.1600-0587.1995.tb00132.x
Subject(s) - downwelling , fauna , abiotic component , groundwater , upwelling , epigeal , surface water , ecology , phreatic , geology , hydrology (agriculture) , environmental science , biology , aquifer , geotechnical engineering , environmental engineering
Water chemistry and community assemblages of surface and interstitial invertebrates were studied at seven sues on the French Rivers Rhône and Am at surface and at 50 cm depth into the bed sediments Chemical factors allowed differentiation of surface water from groundwater and detection of water exchanges defining clear downwelling and upwelling zones At some sites, interstitial water showed both surface and phreatic conditions, characterizing the underflows of the Rhone or of the Am In the interstitial area, most taxa showed no significant correlations with water chemistry Some epigean and hypogean fauna showed correlations with certain factors Clear relationships appeared between the water exchanges and the distribution of surface and interstitial faunas In interstitial samples, epigean and some hypogean species characterized the downwelling zones while others seemed to be strictly linked to the upwelling zones In surface samples, the presence of hypogean species was associated with regions of groundwater upwelling