Phytoplankton and cyanobacteria abundances in mid‐21st century lakes depend strongly on future land use and climate projections

Kakouei, Karan; Kraemer, Benjamin M.; Anneville, Orlane; Carvalho, Laurence; Feuchtmayr, Heidrun; Graham, Jennifer L.; Higgins, Scott N.; Pomati, Francesco; Rudstam, Lars G.; Stockwell, Jason D.; Thackeray, Stephen J.; Vanni, Michael J.; Adrian, Rita

doi:10.1111/gcb.15866

Cited by 38 publications

(20 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Kraemer et al 2017), under warmer climate and eutrophic conditions, a higher biomass of phytoplankton and dominance by potentially toxic cyanobacteria is expected. This a consistent result emerging from numerous recent studies (Paerl and Huisman 2008;Kosten et al 2012;Paerl and Paul 2012;Jeppesen et al 2014;Huisman et al 2018;Burford et al 2020) and research approaches such as modelling for individual temperate lakes and basins (Trolle et al 2011;Kakouei et al 2021); heating experiments (Hansson et al 2013, but see Feuchtmayr et al 2009and Kratina et al 2012; and latitudinal gradient and cross-comparative studies (Kosten et al 2012;Meerhoff et al 2012).…”

Section: Eutrophication and Climate Warming Synergy And Feedbacks Thr...supporting

confidence: 52%

“…The best approaches for mitigating the effects of human activity on lake phytoplankton and cyanobacteria depend strongly on lake sensitivity to long-term change and the magnitude of projected climate changes and land use at a given location (Kakouei et al 2021). Although climate warming may promote eutrophication and its symptoms, eutrophication is still largely human-controlled.…”

Section: Advances In Mitigation and Adaptation Policiesmentioning

confidence: 99%

See 1 more Smart Citation

Feedback between climate change and eutrophication: revisiting the allied attack concept and how to strike back

et al. 2022

View full text Add to dashboard Cite

Despite its well-established negative impacts on society and biodiversity, eutrophication continues to be one of the most pervasive anthropogenic influence along the freshwater to marine continuum. The interaction between eutrophication and climate change, particularly climate warming, was explicitly focused upon a decade ago in the paper by Moss et al. (2011), which called for an integrated response to both problems, given their apparent synergy. In this review, we summarise advances in the theoretical framework and empirical research on this issue and analyse the current understanding of the major drivers and mechanisms by which climate change can enhance eutophication, and vice versa, with a particular focus on shallow lakes.Climate change can affect nutrient loading, through changes at the catchment and landscape levels by affecting hydrological patterns and fire frequency, and through temperature effects on nutrient cycling. Biotic communities and their interactions can also be directly and indirectly affected by climate change, leading to an overall weakening of resilience to eutrophication impacts. Increasing empirical evidence now indicates several mechanisms by which eutrophying aquatic systems can increasingly act as important sources of greenhouse gases to the atmosphere, particularly methane. We also highlight potential feedbacks between eutrophication, cyanobacterial blooms, and climate change.Facing both challenges at the same time is more pressing than ever. Meaningful and strong measures at the landscape and water body levels are therefore required if we are to ensure ecosystem resilience and safe water supply, conserving biodiversity, and decreasing the carbon footprint of freshwaters.

show abstract

Section: Eutrophication and Climate Warming Synergy And Feedbacks Thr...supporting

confidence: 52%

Section: Advances In Mitigation and Adaptation Policiesmentioning

confidence: 99%

Feedback between climate change and eutrophication: revisiting the allied attack concept and how to strike back

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Rising wind speeds may increase the disturbance and reduce the surface area of PBs (Wu et al, 2015), while moderate precipitation may promote PB severity due to nutrient runoff (Ho & Michalak, 2020). Other catchment stressors (e.g., land use change) may interact with eutrophication and climate change, particularly in urban lakes in rapidly expanding cities (Kakouei et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Urbanization generally leads to increased nutrient loading to the surrounding lakes (Kakouei et al, 2021), increased lake water temperature downwind and/or downstream of the city by heating the near surface temperature and inflowing rivers (LeBlanc et al, 1997; Tang et al, 2022). Meanwhile, urban expansions can increase suburban wind speeds by strengthening lake‐land breeze circulations (Liu et al, 2020; Zhang et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Urbanization shifts long‐term phenology and severity of phytoplankton blooms in an urban lake through different pathways

Tao

Zhang

et al. 2023

Global Change Biology

View full text Add to dashboard Cite

Climate change can induce phytoplankton blooms (PBs) in eutrophic lakes worldwide, and these blooms severely threaten lake ecosystems and human health. However, it is unclear how urbanization and its interaction with climate impact PBs, which has implications for the management of lakes. Here, we used multi-source remote sensing data and integrated the Virtual-Baseline Floating macroAlgae Height (VB-FAH) index and OTSU threshold automatic segmentation algorithm to extract the area of PBs in Lake Dianchi, China, which has been subjected to frequent PBs and rapid urbanization in its vicinity. We further explored long-term trends in the phenological and severity metrics of PBs and quantified the contributions from urbanization, climate change, and also nutrient levels to these trends. When comparing data from 2011-2021 to 2000-2010, we found significantly advanced initiation of PBs (28.6 days) and noticeably longer duration (51.9 days) but an insignificant trend in time of disappearance. The enhancement of algal nutrient use efficiency, likely induced by increased water temperature and reduced nutrient concentrations, presumably contributed to an earlier initiation and longer duration of PBs, while there was a negative correlation between spring wind speed and the initiation of PBs. Fortunately, we found that both the area of the PBs and the frequency of severe blooms (covering more than 19.8 km 2 ) demonstrated downward trends, which could be attributed to increased wind speed and/or reduced nutrient levels. Moreover, the enhanced land surface temperature

show abstract

“…The global climate is changing [1,2], and this may affect the ecosystem structure and nutrient dynamics of lakes as well as their water quality. Several studies suggest that the biomass of phytoplankton and the concentration of chlorophyll a will increase, and also the relative contribution of cyanobacteria among the phytoplankton assemblage is expected to rise [3][4][5][6][7]. In correspondence with this, latitudinal gradient and cross-comparative studies have shown a greater importance of cyanobacteria in warm shallow lakes compared to colder temperate shallow lakes [6,8].…”

Section: Introductionmentioning

confidence: 99%

Do Cross-Latitude and Local Studies Give Similar Predictions of Phytoplankton Responses to Warming? An Analysis of Monitoring Data from 504 Danish Lakes

et al. 2021

View full text Add to dashboard Cite

Cross-latitude studies on lakes have a potential to predict how global warming may cause major changes in phytoplankton biomass and composition, e.g., the development of favourable conditions for cyanobacteria dominance. However, results from these studies may be influenced by biogeographical factors, and the conclusions may, therefore, not hold when considering local response patterns. We used monthly monitoring data from 504 lakes in Denmark—a small and homogeneous geographical region—to establish empirical relationships between key phytoplankton groups and a set of explanatory variables including total phosphorus (TP), total nitrogen (TN), lake mean depth (DEP) and water temperature (TEMP). All variables had strong effects on phytoplankton biomass and composition, but their contributions varied over the seasons, with TEMP being particularly important in June–October. We found dominance of cyanobacteria in terms of biomass and also an increase in dinophytes biomass at higher TEMP, while diatoms and chlorophytes became less important. In May, however, the TEMP effect on total phytoplankton biomass was negative, likely reflecting intensified zooplankton grazing. Our results suggest that biogeographical effects are of minor importance for the response patterns of phytoplankton to temperature and that substantial concentration reductions of TN and TP are needed in eutrophic lakes to counteract the effect of the climate change-induced increase in TEMP.

show abstract

Phytoplankton and cyanobacteria abundances in mid‐21st century lakes depend strongly on future land use and climate projections

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 38 publications

References 79 publications

Feedback between climate change and eutrophication: revisiting the allied attack concept and how to strike back

Feedback between climate change and eutrophication: revisiting the allied attack concept and how to strike back

Urbanization shifts long‐term phenology and severity of phytoplankton blooms in an urban lake through different pathways

Do Cross-Latitude and Local Studies Give Similar Predictions of Phytoplankton Responses to Warming? An Analysis of Monitoring Data from 504 Danish Lakes

Contact Info

Product

Resources

About