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A spatial fingerprint of land-water linkage of biodiversity uncovered by remote sensing and environmental DNA


Zhang, Heng; Mächler, Elvira; Morsdorf, Felix; Niklaus, Pascal A; Schaepman, Michael E; Altermatt, Florian (2023). A spatial fingerprint of land-water linkage of biodiversity uncovered by remote sensing and environmental DNA. Science of the Total Environment, 867:161365.

Abstract

Aquatic and terrestrial ecosystems are tightly connected via spatial flows of organisms and resources. Such land-water linkages integrate biodiversity across ecosystems and suggest a spatial association of aquatic and terrestrial biodiversity. However, knowledge about the extent of this spatial association is limited. By combining satellite remote sensing (RS) and environmental DNA (eDNA) extraction from river water across a 740-km2 mountainous catchment, we identify a characteristic spatial land-water fingerprint. Specifically, we find a spatial association of riverine eDNA diversity with RS spectral diversity of terrestrial ecosystems upstream, peaking at a 400 m distance yet still detectable up to a 2.0 km radius. Our findings show that biodiversity patterns in rivers can be linked to the functional diversity of surrounding terrestrial ecosystems and provide a dominant scale at which these linkages are strongest. Such spatially explicit information is necessary for a functional understanding of land-water linkages.

Abstract

Aquatic and terrestrial ecosystems are tightly connected via spatial flows of organisms and resources. Such land-water linkages integrate biodiversity across ecosystems and suggest a spatial association of aquatic and terrestrial biodiversity. However, knowledge about the extent of this spatial association is limited. By combining satellite remote sensing (RS) and environmental DNA (eDNA) extraction from river water across a 740-km2 mountainous catchment, we identify a characteristic spatial land-water fingerprint. Specifically, we find a spatial association of riverine eDNA diversity with RS spectral diversity of terrestrial ecosystems upstream, peaking at a 400 m distance yet still detectable up to a 2.0 km radius. Our findings show that biodiversity patterns in rivers can be linked to the functional diversity of surrounding terrestrial ecosystems and provide a dominant scale at which these linkages are strongest. Such spatially explicit information is necessary for a functional understanding of land-water linkages.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Evolutionary Biology and Environmental Studies
08 Research Priority Programs > Global Change and Biodiversity
Dewey Decimal Classification:910 Geography & travel
Scopus Subject Areas:Physical Sciences > Environmental Engineering
Physical Sciences > Environmental Chemistry
Physical Sciences > Waste Management and Disposal
Physical Sciences > Pollution
Uncontrolled Keywords:Biodiversity, Remote sensing, Functional trait, Environmental DNA
Language:English
Date:1 April 2023
Deposited On:02 Jun 2023 08:24
Last Modified:29 Jun 2024 01:36
Publisher:Elsevier
ISSN:0048-9697
OA Status:Hybrid
Publisher DOI:https://doi.org/10.1016/j.scitotenv.2022.161365
PubMed ID:36634788
Project Information:
  • : FunderUniversity of Zurich Research Priority Programme
  • : Grant IDGlobal Change and Biodiversity
  • : Project TitlePollinator responses to global change and its implications for ecosystem function
  • : Project Websitehttps://www.gcb.uzh.ch/en/Research/Phase-II-Projects/Landscapes/Project-2-Florian-Altermatt.html
  • : FunderSNSF
  • : Grant ID31003A_173074
  • : Project TitleRiverDNA: uncovering fundamental biodiversity in riverine systems using environmental DNA
  • : FunderSNSF
  • : Grant IDPP00P3_179089
  • : Project TitleBridging biodiversity and ecosystem functioning: a meta-ecosystem perspective
  • Content: Published Version
  • Language: English
  • Licence: Creative Commons: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)