caa a22 4500 445891114 CHVBK 20180317145616.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10750-011-0781-6 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0781-6 Response of biofilm-dwelling nematodes to habitat changes in the Garonne River, France: influence of hydrodynamics and microalgal availability [Elektronische Daten] [Nabil Majdi, Walter Traunspurger, Stéphanie Boyer, Benoît Mialet, Michèle Tackx, Robert Fernandez, Stefanie Gehner, Loïc Ten-Hage, Evelyne Buffan-Dubau] Lotic epilithic biofilms are submitted to seasonal disturbances (e.g. flood events, self-detachment), which influence the biomass, diversity and viability of their algal and bacterial communities. The objective of this study is to examine whether (1) biofilm-dwelling nematodes respond to such seasonal changes in terms of diversity and community structure, (2) nematode species and feeding-types distribution respond to the varied trophic situations within the biofilm, since variations in biofilm microalgal composition may represent a variation in available food. The biofilm-dwelling nematode community was monitored in a temperate river over an 18month period with a high sampling frequency. These data were linked to environmental abiotic and biofilm biotic factors. Nematode density was positively correlated to biofilm and microalgal biomass, but was dampened by floods. A clear seasonal pattern of the community was detected (summer shift), so that two nematode groups stand out: (1) the epistrate-feeders Chromadorina bioculata (Schultze in Carus, 1857) and Chromadorina viridis (Linstow, 1876) were primarily related to diatom availability, and dominated the nematode assemblage most of the time, (2) seven species from various feeding types (deposit-feeders, suction-feeders and chewers) grew mainly under summer conditions concomitantly to a change of biofilm trophic status and microalgal composition. Overall, the results suggested that, in addition to abiotic disturbances, the availability of potential preys in the biofilm might represent an important driver of nematode community patterns. Springer Science+Business Media B.V., 2011 Nematodes nationallicence Periphyton nationallicence Diversity nationallicence Feeding types nationallicence Algae nationallicence Environmental factors nationallicence Majdi Nabil EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut Traunspurger Walter Animal Ecology, University of Bielefeld, Morgenbreede 45, 33615, Bielefeld, Germany aut Boyer Stéphanie EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut Mialet Benoît EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut Tackx Michèle EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut Fernandez Robert EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut Gehner Stefanie Animal Ecology, University of Bielefeld, Morgenbreede 45, 33615, Bielefeld, Germany aut Ten-Hage Loïc EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut Buffan-Dubau Evelyne EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut Hydrobiologia Springer Netherlands 673/1(2011-09-01), 229-244 0018-8158 673:1<229 2011 673 10750 https://doi.org/10.1007/s10750-011-0781-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0781-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Majdi Nabil EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut NATIONALLICENCE 700 1- Traunspurger Walter Animal Ecology, University of Bielefeld, Morgenbreede 45, 33615, Bielefeld, Germany aut NATIONALLICENCE 700 1- Boyer Stéphanie EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut NATIONALLICENCE 700 1- Mialet Benoît EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut NATIONALLICENCE 700 1- Tackx Michèle EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut NATIONALLICENCE 700 1- Fernandez Robert EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut NATIONALLICENCE 700 1- Gehner Stefanie Animal Ecology, University of Bielefeld, Morgenbreede 45, 33615, Bielefeld, Germany aut NATIONALLICENCE 700 1- Ten-Hage Loïc EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut NATIONALLICENCE 700 1- Buffan-Dubau Evelyne EcoLab, University Paul Sabatier, 118 route de Narbonne, 31062, Toulouse, France aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 673/1(2011-09-01), 229-244 0018-8158 673:1<229 2011 673 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer