@article{fdi:010073758,
  title = {{B}iological impacts of local vs. regional land use on a small tributary of the {S}eine {R}iver ({F}rance) : insights from a food web approach based on stable isotopes},
  author = {{H}ette-{T}ronquart, {N}. and {O}berdorff, {T}hierry and {T}ales, {E}. and {Z}ahm, {A}. and {B}elliard, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A}s part of the landscape, streams are influenced by land use. {H}ere, we contributed to the understanding of the biological impacts of land use on streams, investigating how landscape effects vary with spatial scales (local vs. regional). {W}e adopted a food web approach integrating both biological structure and functioning, to focus on the overall effect of land use on stream bioc{A}"nosis. {W}e selected 17 sites of a small tributary of the {S}eine {R}iver ({F}rance) for their contrasted land use, and conducted a natural experiment by sampling three organic matter sources, three macroinvertebrate taxa, and most of the fish community. {U}sing stable isotope analysis, we calculated three food web metrics evaluating two major dimensions of the trophic diversity displayed by the fish community: (i) the diversity of exploited resources and (ii) the trophic level richness. {T}he idea was to examine whether (1) land-use effects varied according to spatial scales, (2) land use affected food webs through an effect on community structure and (3) land use affected food webs through an effect on available resources. {B}eside an increase in trophic diversity from upstream to downstream, our empirical data showed that food webs were influenced by land use in the riparian corridors (local scale). {T}he effect was complex, and depended on site's position along the upstream-downstream gradient. {B}y contrast, land use in the catchment (regional scale) did not influence stream bioc{A}"nosis. {A}t the local scale, community structure was weakly influenced by land use, and thus played a minor role in explaining food web modifications. {O}ur results suggested that the amount of available resources at the base of the food web was partly responsible for food web modifications. {I}n addition, changes in biological functioning (i.e. feeding interactions) can also explain another part of the land-use effect. {T}hese results highlight the role played by the riparian corridors as a buffer zone, and advocate that riparian corridor should be at the centre of water management attention.},
  keywords = {{T}rophic diversity ; {F}ood webs ; {S}table isotopes ; {L}and use ; {F}ish community ; {B}iological functioning ; {S}tream ecology ; {U}rbanisation ; {FRANCE} ; {SEINE}},
  booktitle = {},
  journal = {{E}nvironmental {S}cience and {P}ollution {R}esearch},
  volume = {25},
  numero = {24},
  pages = {23583--23594},
  ISSN = {0944-1344},
  year = {2018},
  DOI = {10.1007/s11356-017-8771-5},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073758},
}