Cargando…

Spatio-temporal patterns of multi-trophic biodiversity and food-web characteristics uncovered across a river catchment using environmental DNA

Accurate characterisation of ecological communities with respect to their biodiversity and food-web structure is essential for conservation. However, combined empirical study of biodiversity and multi-trophic food webs at a large spatial and temporal resolution has been prohibited by the lack of app...

Descripción completa

Detalles Bibliográficos
Autores principales: Blackman, Rosetta C., Ho, Hsi-Cheng, Walser, Jean-Claude, Altermatt, Florian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8943070/
https://www.ncbi.nlm.nih.gov/pubmed/35322190
http://dx.doi.org/10.1038/s42003-022-03216-z
_version_ 1784673440655998976
author Blackman, Rosetta C.
Ho, Hsi-Cheng
Walser, Jean-Claude
Altermatt, Florian
author_facet Blackman, Rosetta C.
Ho, Hsi-Cheng
Walser, Jean-Claude
Altermatt, Florian
author_sort Blackman, Rosetta C.
collection PubMed
description Accurate characterisation of ecological communities with respect to their biodiversity and food-web structure is essential for conservation. However, combined empirical study of biodiversity and multi-trophic food webs at a large spatial and temporal resolution has been prohibited by the lack of appropriate access to such data from natural systems. Here, we assessed biodiversity and food-web characteristics across a 700 km(2) riverine network over seasons using environmental DNA. We found contrasting biodiversity patterns between major taxonomic groups. Local richness showed statistically significant, season-dependent increases and decreases towards downstream location within the catchment for fish and bacteria, respectively. Meanwhile, invertebrate richness remained spatially unchanged but varied across seasons. The structure of local food webs, such as link density and nestedness, also varied across space and time. However, these patterns did not necessarily mirror those observed for biodiversity and functional feeding characteristics. Our results suggest that biodiversity patterns and food-web dynamics are not directly scalable to each other even at the same spatial and temporal scales. In order to conserve species diversity as well as the functional trophic integrity of communities, patterns of biodiversity and food-web characteristics must thus be jointly studied.
format Online
Article
Text
id pubmed-8943070
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-89430702022-04-08 Spatio-temporal patterns of multi-trophic biodiversity and food-web characteristics uncovered across a river catchment using environmental DNA Blackman, Rosetta C. Ho, Hsi-Cheng Walser, Jean-Claude Altermatt, Florian Commun Biol Article Accurate characterisation of ecological communities with respect to their biodiversity and food-web structure is essential for conservation. However, combined empirical study of biodiversity and multi-trophic food webs at a large spatial and temporal resolution has been prohibited by the lack of appropriate access to such data from natural systems. Here, we assessed biodiversity and food-web characteristics across a 700 km(2) riverine network over seasons using environmental DNA. We found contrasting biodiversity patterns between major taxonomic groups. Local richness showed statistically significant, season-dependent increases and decreases towards downstream location within the catchment for fish and bacteria, respectively. Meanwhile, invertebrate richness remained spatially unchanged but varied across seasons. The structure of local food webs, such as link density and nestedness, also varied across space and time. However, these patterns did not necessarily mirror those observed for biodiversity and functional feeding characteristics. Our results suggest that biodiversity patterns and food-web dynamics are not directly scalable to each other even at the same spatial and temporal scales. In order to conserve species diversity as well as the functional trophic integrity of communities, patterns of biodiversity and food-web characteristics must thus be jointly studied. Nature Publishing Group UK 2022-03-23 /pmc/articles/PMC8943070/ /pubmed/35322190 http://dx.doi.org/10.1038/s42003-022-03216-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Blackman, Rosetta C.
Ho, Hsi-Cheng
Walser, Jean-Claude
Altermatt, Florian
Spatio-temporal patterns of multi-trophic biodiversity and food-web characteristics uncovered across a river catchment using environmental DNA
title Spatio-temporal patterns of multi-trophic biodiversity and food-web characteristics uncovered across a river catchment using environmental DNA
title_full Spatio-temporal patterns of multi-trophic biodiversity and food-web characteristics uncovered across a river catchment using environmental DNA
title_fullStr Spatio-temporal patterns of multi-trophic biodiversity and food-web characteristics uncovered across a river catchment using environmental DNA
title_full_unstemmed Spatio-temporal patterns of multi-trophic biodiversity and food-web characteristics uncovered across a river catchment using environmental DNA
title_short Spatio-temporal patterns of multi-trophic biodiversity and food-web characteristics uncovered across a river catchment using environmental DNA
title_sort spatio-temporal patterns of multi-trophic biodiversity and food-web characteristics uncovered across a river catchment using environmental dna
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8943070/
https://www.ncbi.nlm.nih.gov/pubmed/35322190
http://dx.doi.org/10.1038/s42003-022-03216-z
work_keys_str_mv AT blackmanrosettac spatiotemporalpatternsofmultitrophicbiodiversityandfoodwebcharacteristicsuncoveredacrossarivercatchmentusingenvironmentaldna
AT hohsicheng spatiotemporalpatternsofmultitrophicbiodiversityandfoodwebcharacteristicsuncoveredacrossarivercatchmentusingenvironmentaldna
AT walserjeanclaude spatiotemporalpatternsofmultitrophicbiodiversityandfoodwebcharacteristicsuncoveredacrossarivercatchmentusingenvironmentaldna
AT altermattflorian spatiotemporalpatternsofmultitrophicbiodiversityandfoodwebcharacteristicsuncoveredacrossarivercatchmentusingenvironmentaldna