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Forested riparian buffers change the taxonomic and functional composition of stream invertebrate communities in agricultural catchments

Sargac, Jasmina and Johnson, Richard and Burdon, Francis and Truchy, Amélie and Risnoveanu, Geta and Goethals, Peter and Mckie, Brendan (2021). Forested riparian buffers change the taxonomic and functional composition of stream invertebrate communities in agricultural catchments. Water. 13 :8 , 1028
[Research article]

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Abstract

Riparian zones form the interface between stream and terrestrial ecosystems and play a key role through their vegetation structure in determining stream biodiversity, ecosystem functioning and regulating human impacts, such as warming, nutrient enrichment and sedimentation. We assessed how differing riparian vegetation types influence the structural and functional composition (based on species traits) of stream invertebrate communities in agricultural catchments. We characterized riparian and stream habitat conditions and sampled stream invertebrate communities in 10 independent site pairs, each comprising one “unbuffered” reach lacking woody riparian vegetation and a second downstream reach with a woody riparian buffer. Forested riparian buffers were associated with greater shading, increased gravel content in stream substrates and faster flow velocities. We detected changes in invertebrate taxonomic composition in response to buffer presence, with an increase in sensitive Ephemeroptera, Plecoptera and Trichoptera (EPT) taxa and increases in key invertebrate species traits, including species with preference for gravel substrates and aerial active dispersal as adults. Riparian vegetation independently explained most variation in taxa composition, whereas riparian and instream habitat together explained most variation in functional composition. Our results highlight how changes in stream invertebrate trait distributions may indirectly reflect differences in riparian habitat, with implications for stream health and cross-ecosystem connectivity.

Authors/Creators:Sargac, Jasmina and Johnson, Richard and Burdon, Francis and Truchy, Amélie and Risnoveanu, Geta and Goethals, Peter and Mckie, Brendan
Title:Forested riparian buffers change the taxonomic and functional composition of stream invertebrate communities in agricultural catchments
Series Name/Journal:Water
Year of publishing :2021
Volume:13
Number:8
Article number:1028
Number of Pages:17
ISSN:2073-4441
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:riparian zone, riparian vegetation, riparian buffer strip, stream macroinvertebrates, agriculture, taxonomic composition, functional traits
URN:NBN:urn:nbn:se:slu:epsilon-p-111472
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111472
Additional ID:
Type of IDID
DOI10.3390/w13081028
Web of Science (WoS)000644894500001
Scopus2-s2.0-85104642875
ID Code:28367
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:16 Jun 2022 14:00
Metadata Last Modified:17 Jun 2022 09:11

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