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Forested buffers in agricultural landscapes : mitigation effects on stream–riparian meta-ecosystems

Sargac, Jasmina (2022). Forested buffers in agricultural landscapes : mitigation effects on stream–riparian meta-ecosystems. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-947-6
eISBN 978-91-7760-948-3
[Doctoral thesis]

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Abstract

Stream–riparian meta-ecosystems are strongly connected through exchanges of
energy, material and organisms. Land use can disrupt ecological connectivity by
affecting community composition directly and/or indirectly by altering the instream
and riparian habitats that support biological structure and function. Although
forested riparian buffers are increasingly used as a management intervention, our
understanding of their effects on the functioning of stream–riparian metaecosystems
is limited. This study assessed patterns in the longitudinal and lateral
profiles of streams in modified landscapes across Europe and Sweden using a pairedreach
approach, with upstream unbuffered reaches lacking woody riparian
vegetation and with downstream reaches having well-developed forested buffers.
The presence of buffers was positively associated with stream ecological status as
well as important attributes, which included instream shading and the provision of
suitable habitats for instream and riparian communities, thus supporting more
aquatic insects (especially EPT taxa). Emergence of aquatic insects is particularly
important because they mediate reciprocal flows of subsidies into terrestrial systems.
Results of fatty acid analysis and prey DNA from spiders further supported the
importance of buffers in providing more aquatic-derived quality food (i.e. essential
fatty acids) for riparian spiders. Findings presented in this thesis show that buffers
contribute to the strengthening of cross-ecosystem connectivity and have the
potential to affect a wide range of consumers in modified landscapes.

Authors/Creators:Sargac, Jasmina
Title:Forested buffers in agricultural landscapes : mitigation effects on stream–riparian meta-ecosystems
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2022
Number:2022:36
Number of Pages:74
Publisher:Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-947-6
ISBN for electronic version:978-91-7760-948-3
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
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 buffers, meta-ecosystems, trophic linkages, polyunsaturated fatty acids (PUFA), molecular gut analysis
URN:NBN:urn:nbn:se:slu:epsilon-p-117067
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-117067
ID Code:27808
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:13 May 2022 09:32
Metadata Last Modified:13 May 2022 09:41

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