FN Archimer Export Format
PT J
TI Taxonomic composition and lake bathymetry influence fatty acid export via emergent insects
BT 
AF MATHIEU-RESUGE, Margaux
   MARTIN-CREUZBURG, Dominik
   TWINING, Cornelia W.
   PARMAR, Tarn Preet
   HAGER, Hannes H.
   KAINZ, Martin J.
AS 1:1;2:2;3:2,3;4:2;5:1;6:1,4;
FF 1:;2:;3:;4:;5:;6:;
C1 WasserCluster Lunz -Biologische Station GmbH, Dr. Carl Kupelwieser Promenade 5 -AT- 3293, Lunz am See, Austria
   Limnological Institute, University of Konstanz, Konstanz, Germany
   Max Planck Institute of Animal Behavior, Radolfzell, Germany
   Department of Biomedical Research, Danube University Krems, Krems an der Donau, Austria
C2 UNIV VIENNA, AUSTRIA
   UNIV KONSTANZ, GERMANY
   MAX PLANCK INST ANIM BEHAV, GERMANY
   UNIV KREMS, AUSTRIA
IF 3.538
TC 13
UR https://archimer.ifremer.fr/doc/00832/94432/101741.pdf
   https://archimer.ifremer.fr/doc/00832/94432/101742.docx
LA English
DT Article
DE ;aquatic-terrestrial linkage;dietary energy fluxes;lipids;semi-aquatic insects;omega-3 polyunsaturated fatty acids
AB 1. The ecological role of emergent aquatic insects from lakes in exporting dietary polyunsaturated fatty acids (PUFA) across the freshwater-land interface is still poorly understood. 2. In this field study, we explored the seasonal biomass export of emergent insects from three subalpine lakes and investigated how lipids of emergent insects were related to lake bathymetry, lipids of organic matter in lake sediments (i.e., basal resources), and the taxonomic composition of insects. 3. The total lipid and PUFA fluxes of emergent insects were strongly related to taxonomy and lake bathymetry, but weakly associated with the PUFA content of the uppermost lake sediment layers. PUFA flux estimates of the dominant taxon, Chironomidae, from the shallowest lake (3 m depth; 125 g PUFA m(-2) season(-1)) were considerably higher than those from the deepest lake (33 m depth; 56 g PUFA m(-2) season(-1)), due to the higher per area biomass of emergent insects from this shallow lake. Insect taxonomy also affected the composition of PUFA transfer to land: Chironomidae were richer in omega-6 PUFA, such as linoleic acid (18:2n-6) and arachidonic acid (20:4n-6), whereas Ephemeroptera and Trichoptera contained more omega-3 PUFA, especially alpha-linolenic acid (18:3n-3) and eicosapentaenoic acid (20:5n-3). 4. Our findings suggest that taxon-specific differences in PUFA content and lake bathymetry jointly shape PUFA fluxes and thus the provisioning of emergent insects as dietary sources of physiologically important PUFA for riparian consumers. 
PY 2021
PD DEC
SO Freshwater Biology
SN 0046-5070
PU Wiley
VL 66
IS 12
UT 000696432200001
BP 2199
EP 2209
DI 10.1111/fwb.13819
ID 94432
ER

EF