Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Eutrophication promotes resource use efficiency and toxin production of Microcystis in a future climate warming scenario

Yang, Yalan ; Li, Qi LU ; Yan, Shuwen ; Zhang, Peiyu ; Zhang, Huan LU ; Kong, Xianghong ; Wang, Hongxia ; Hansson, Lars Anders LU orcid ; Xie, Songguang and Xu, Jun LU , et al. (2024) In Environmental Research 263.
Abstract

Addressing the risks of cyanobacterial blooms and toxin production under ongoing and accelerating eutrophication and climate warming is crucial for both water ecosystem services and human health. Therefore, we here explored the interactive effects of eutrophication and warming on freshwater ecosystems, focusing on Microcystis and its cyanotoxin production. We employed a large-scale mesocosm system simulating future climate warming scenarios in concert with varying degrees of nutrient enrichment. We explored the full range of identified cyanobacterial toxins and cyanotoxin-producing genes under different experimental conditions and assessed the effects of both eutrophication and warming on both phytoplankton community structure (algal... (More)

Addressing the risks of cyanobacterial blooms and toxin production under ongoing and accelerating eutrophication and climate warming is crucial for both water ecosystem services and human health. Therefore, we here explored the interactive effects of eutrophication and warming on freshwater ecosystems, focusing on Microcystis and its cyanotoxin production. We employed a large-scale mesocosm system simulating future climate warming scenarios in concert with varying degrees of nutrient enrichment. We explored the full range of identified cyanobacterial toxins and cyanotoxin-producing genes under different experimental conditions and assessed the effects of both eutrophication and warming on both phytoplankton community structure (algal densities, community stability) and function (resource use efficiency, RUE). We show here that eutrophication increases the RUE of Microcystis and promotes an increase in toxin-producing genes, leading to a substantial increase in the dominance of Microcystis. This increase correlates with enhanced cyanotoxin production, a trend exacerbated under the influence of future climate warming, suggesting interactions between eutrophication and climate warming on Microcystis ecology and cyanotoxin dynamics. Hence, heatwaves and eutrophication lead the phytoplankton community to be dominated by a minority of algal species with higher toxic capacity. In a broader context, our study underscores the urgent need for holistic management strategies, addressing both nutrient control and climate mitigation, to effectively manage the escalating ecological risks associated with cyanobacterial dominance and toxin production.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; ; and , et al. (More)
; ; ; ; ; ; ; ; ; and (Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Climate warming, Cyanotoxin, Cyanotoxin-producing gene, Eutrophication, Mesocosm
in
Environmental Research
volume
263
article number
120219
publisher
Elsevier
external identifiers
  • pmid:39448008
  • scopus:85207303640
ISSN
0013-9351
DOI
10.1016/j.envres.2024.120219
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2024
id
b760f594-a9bb-4aa7-9b6f-0fc7d1962edb
date added to LUP
2024-11-26 10:36:42
date last changed
2025-07-09 05:10:54
@article{b760f594-a9bb-4aa7-9b6f-0fc7d1962edb,
  abstract     = {{<p>Addressing the risks of cyanobacterial blooms and toxin production under ongoing and accelerating eutrophication and climate warming is crucial for both water ecosystem services and human health. Therefore, we here explored the interactive effects of eutrophication and warming on freshwater ecosystems, focusing on Microcystis and its cyanotoxin production. We employed a large-scale mesocosm system simulating future climate warming scenarios in concert with varying degrees of nutrient enrichment. We explored the full range of identified cyanobacterial toxins and cyanotoxin-producing genes under different experimental conditions and assessed the effects of both eutrophication and warming on both phytoplankton community structure (algal densities, community stability) and function (resource use efficiency, RUE). We show here that eutrophication increases the RUE of Microcystis and promotes an increase in toxin-producing genes, leading to a substantial increase in the dominance of Microcystis. This increase correlates with enhanced cyanotoxin production, a trend exacerbated under the influence of future climate warming, suggesting interactions between eutrophication and climate warming on Microcystis ecology and cyanotoxin dynamics. Hence, heatwaves and eutrophication lead the phytoplankton community to be dominated by a minority of algal species with higher toxic capacity. In a broader context, our study underscores the urgent need for holistic management strategies, addressing both nutrient control and climate mitigation, to effectively manage the escalating ecological risks associated with cyanobacterial dominance and toxin production.</p>}},
  author       = {{Yang, Yalan and Li, Qi and Yan, Shuwen and Zhang, Peiyu and Zhang, Huan and Kong, Xianghong and Wang, Hongxia and Hansson, Lars Anders and Xie, Songguang and Xu, Jun and Wang, Huan}},
  issn         = {{0013-9351}},
  keywords     = {{Climate warming; Cyanotoxin; Cyanotoxin-producing gene; Eutrophication; Mesocosm}},
  language     = {{eng}},
  month        = {{12}},
  publisher    = {{Elsevier}},
  series       = {{Environmental Research}},
  title        = {{Eutrophication promotes resource use efficiency and toxin production of Microcystis in a future climate warming scenario}},
  url          = {{http://dx.doi.org/10.1016/j.envres.2024.120219}},
  doi          = {{10.1016/j.envres.2024.120219}},
  volume       = {{263}},
  year         = {{2024}},
}