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Small Patches of Riparian Woody Vegetation Enhance Biodiversity of Invertebrates

Forio, Marie Anne Eurie and De Troyer, Niels and Lock, Koen and Witing, Felix and Baert, Lotte and De Saeyer, Nancy and Risnoveanu, Geta and Popescu, Cristina and Burdon, Francis and Kupilas, Benjamin and Friberg, Nikolai and Boets, Pieter and Volk, Martin and Mckie, Brendan and Goethals, Peter (2020). Small Patches of Riparian Woody Vegetation Enhance Biodiversity of Invertebrates. Water. 12 , 3070
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Abstract

Patches of riparian woody vegetation potentially help mitigate environmental impacts of agriculture and safeguard biodiversity. We investigated the effects of riparian forest on invertebrate diversity in coupled stream-riparian networks using a case study in the Zwalm river basin (Flanders, Belgium). Agriculture is one of the main pressures in the basin and riparian forest is limited to a number of isolated patches. Our 32 study sites comprised nine unshaded “unbuffered” sites which were paired with nine shaded “buffered” sites on the same stream reach, along with five ‘least-disturbed’ sites and nine downstream sites. We sampled water chemistry, habitat characteristics and stream and riparian invertebrates (carabid beetles and spiders) at each site. Three methods were used to quantify riparian attributes at different spatial scales: a visually-assessed qualitative index, quantitative estimates of habitat categories in six rectangular plots (10 × 5 m) and geographic information system (GIS)-derived land cover data. We investigated relationships between invertebrates and riparian attributes at different scales with linear regression and redundancy analyses. Spiders and carabids were most associated with local riparian attributes. In contrast, aquatic macroinvertebrates were strongly influenced by the extent of riparian vegetation in a riparian band upstream (100–300 m). These findings demonstrate the value of quantifying GIS-based metrics of riparian cover over larger spatial scales into assessments of the efficacy of riparian management as a complement to more detailed local scale riparian assessments in situ. Our findings highlight the value of even small patches of riparian vegetation in an otherwise extensively disturbed landscape in supporting biodiversity of both terrestrial and freshwater invertebrates and emphasize the need to consider multiple spatial scales in riparian management strategies which aim to mitigate human impacts on biodiversity in stream-riparian networks.

Authors/Creators:Forio, Marie Anne Eurie and De Troyer, Niels and Lock, Koen and Witing, Felix and Baert, Lotte and De Saeyer, Nancy and Risnoveanu, Geta and Popescu, Cristina and Burdon, Francis and Kupilas, Benjamin and Friberg, Nikolai and Boets, Pieter and Volk, Martin and Mckie, Brendan and Goethals, Peter
Title:Small Patches of Riparian Woody Vegetation Enhance Biodiversity of Invertebrates
Series Name/Journal:Water
Year of publishing :2020
Volume:12
Article number:3070
ISSN:2073-4441
Language:English
Publication Type:Journal 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 > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:streams, buffer strips, spiders, carabids, Ephemeroptera,Plecoptera,Trichoptera (EPT) taxa, biodiversity, water management
URN:NBN:urn:nbn:se:slu:epsilon-p-108839
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-108839
Additional ID:
Type of IDID
DOI10.3390/w12113070
ID Code:19063
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:30 Nov 2020 14:58
Metadata Last Modified:15 Jan 2021 19:21

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