Article
Environmental Sciences
Siqi Wang, Xiang Zhang, Chao Wang, Nengcheng Chen
Summary: A cyanobacterial prediction model was developed for Lake Taihu using a machine learning method, which can generate continuous cyanobacterial data at a fine spatial scale and 24-hour temporal resolution. The results showed that meteorological conditions can influence the occurrence of cyanobacterial blooms, and the model can provide cyanobacterial data for target waterbodies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Honglei Guo, Huaiqing Liu, Heng Lyu, Yingchun Bian, Suke Zhong, Yangyang Li, Song Miao, Ziqian Yang, Jiafeng Xu, Jing Cao, Yunmei Li
Summary: Serious cyanobacterial blooms caused by lake eutrophication have become a global problem, impacting human production, life, and health. This study examined the characteristics and differences of cyanobacterial blooms patterns in Lakes Chaohu and Taihu over the past 20 years. The severity of blooms showed a similar decreasing-then-increasing trend in both lakes, but with variations in different years. Temperature was identified as the most important driving factor, and TP played a more significant role in recent years.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Biodiversity Conservation
Wu Donghao, Chen Fangfei, Hu Jiaxin, Ji Guanning, Shi YaDong, Shen Aichun
Summary: The study found that the intensity of cyanobacterial blooms in Lake Taihu decreased in 2021 due to stable wind speed, increased rainfall, and reductions in key nutrients like total nitrogen, ammonia nitrogen, and nitrate nitrogen. The results highlight the importance of nutrient reduction efforts and the need for comprehensive management measures to further improve the water quality of Lake Taihu.
ECOLOGICAL INDICATORS
(2022)
Article
Engineering, Environmental
Limei Shi, Yuanfeng Cai, Shengling Gao, Min Zhang, Feizhou Chen, Xiaoli Shi, Yang Yu, Yaping Lu, Qinglong L. Wu
Summary: This study investigated the community composition and metabolism patterns of microbes inhabiting large cyanobacterial colonies. The results showed that Cyanobacteria and associated bacteria had different response patterns to water nutrient conditions. Metatranscriptomic data revealed that the gene expression patterns of the most active bacteria were influenced by chlorophyll a concentrations. Network analysis showed coordinated transcriptional patterns between Cyanobacteria and Proteobacteria. These findings provide insights into the metabolic processes of microbes in large cyanobacterial colonies, which are important for the understanding and management of year-round cyanobacterial blooms.
Article
Engineering, Environmental
Jianming Deng, Kun Shan, Kun Shi, Song S. Qian, Yunlin Zhang, Boqiang Qin, Guangwei Zhu
Summary: Although nutrient reduction alone is less effective in combating cyanobacterial blooms due to climate change, this study developed a model using nutrient levels and climatic factors to predict spring cyanobacterial blooms. The results showed that both climatic factors and nutrients played vital roles, with climatic factors being the primary drivers. Climate change had a 90% probability of increasing the bloom area, but nutrient reduction helped mitigate the expansion. The study provides an effective method for deriving dynamic nutrient thresholds for lake management under different climatic scenarios.
Article
Limnology
Hai Xu, Mark J. McCarthy, Hans W. Paerl, Justin D. Brookes, Guangwei Zhu, Nathan S. Hall, Boqiang Qin, Yunlin Zhang, Mengyuan Zhu, Justyna J. Hampel, Silvia E. Newell, Wayne S. Gardner
Summary: Despite extensive abatement efforts focused on external phosphorus loading, harmful cyanobacterial blooms persist in Lake Taihu. Internal nutrient cycling plays a key role in sustaining these blooms, with nitrogen leaving the lake faster than phosphorus, creating persistent nitrogen limitation.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Environmental Sciences
Siqi Wang, Xiang Zhang, Nengcheng Chen, Weijia Wang
Summary: This study analyzed the diurnal change characteristics and environmental impacts of cyanobacterial blooms in Lake Taihu, China, using satellite data. The results showed that lakeshore was a hotspot for severe diurnal changes, and autumn was the peak season for frequent diurnal changes. Temperature and wind speed were identified as key factors influencing the occurrence of cyanobacterial blooms.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Xianfang Fan, Shuaishuai Gao, Yi Zhang, Boqiang Qin, Hai Xu, Shiming Ding
Summary: This study revealed that high concentrations of DIN and DRP in Lake Taihu sediments potentially stimulate the initiation and maintenance of cyanobacterial blooms. Elevated levels of NO2--N and NO3--N in April, likely from groundwater influx, led to cyanobacterial blooms in May due to low DRP concentrations. During the summer months, NH4+-N released from cyanobacterial debris mineralization contributed to cyanobacterial growth, with N and P co-limitation in September triggering blooms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Studies
Jingtai Li, Yao Liu, Siying Xie, Min Li, Li Chen, Cuiling Wu, Dandan Yan, Zhaoqing Luan
Summary: This study monitored the spatiotemporal distribution of cyanobacterial blooms in Taihu Lake from 1984 to 2021 using high-resolution remote sensing images, and investigated the influence of water quality and meteorological factors on the blooms. The results showed an increasing trend in both the area and frequency of cyanobacterial blooms in Taihu Lake, which were greatly influenced by water quality and meteorological factors.
Article
Environmental Sciences
Boqiang Qin, Jianming Deng, Kun Shi, Jia Wang, Justin Brookes, Jian Zhou, Yunlin Zhang, Guangwei Zhu, Hans W. Paerl, Li Wu
Summary: The study finds that regional climate anomalies exacerbate eutrophication in Lake Taihu by intensifying internal nutrient cycling and aggravating cyanobacterial blooms, resulting in a positive feedback mechanism. These regional effects of climate anomalies are nested within larger-scale global warming predicted to continue in the foreseeable future, contributing to the global expansion of eutrophication and blooms, especially in large, shallow, and eutrophic lakes.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Shan Li, Chang Liu, Ping Sun, Tianhua Ni
Summary: Understanding the sensitivity of chlorophyll response to nutrient concentrations is important for predicting cyanobacterial bloom risk. This study quantified the interaction effects of different forms of nitrogen and phosphorus on chlorophyll concentrations and proposed a refined response threshold range. The results showed that TP was the dominant factor influencing cyanobacterial blooms in Taihu Lake and should be prioritized for pollution load reduction.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Limnology
Chaoxuan Guo, Mengyuan Zhu, Hai Xu, Yunlin Zhang, Boqiang Qin, Guangwei Zhu, Jianjun Wang
Summary: The study found that the dependency of resource use efficiency (RUE) on phytoplankton diversity has spatiotemporal patterns. The RUE of nitrogen, phosphorous, and silicate showed different temporal trends. RUE was affected by nutrients and water temperature, and was also related to phytoplankton diversity. Interestingly, there was a negative spatial dependency between RUE and phytoplankton diversity. These dependencies were related to the spatial distribution of nutrients. Furthermore, the temporal dependency of RUE on phytoplankton diversity differed in different regions, primarily driven by the temporal stability of nutrients. These findings are important for future environmental management plans.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Xianfang Fan, Shiming Ding, Shuaishuai Gao, Musong Chen, Zhen Fu, Mengdan Gong, Yan Wang, Daniel C. W. Tsang
Summary: This study investigated cobalt cycling in the eutrophic Meiliang Bay of Lake Taihu, revealing that cobalt in sediments is primarily controlled by manganese redox cycling. Despite minimal changes in dissolved and labile cobalt over one year, cobalt levels in the sediment-overlying water system were strongly regulated by cyanobacterial uptake, suggesting cobalt may be a potential limiting nutrient for cyanobacterial blooms.
Article
Ecology
Yan Guo, Xijun Lai, Min Gan
Summary: This study developed a prediction model for forecasting harmful algal blooms caused by cyanobacterial biomass in shallow lakes. The selection of appropriate exogenous variables was found to be critical for accurate predictions, and chlorophyll a, chemical oxygen demand, total phosphorus, and temperature were identified as the main variables influencing the prediction of cyanobacterial blooms.
ECOLOGICAL INFORMATICS
(2023)
Article
Marine & Freshwater Biology
Hongye Cao, Ling Han, Liangzhi Li
Summary: This study proposes a CNN-LSTM integrated model for predicting the area of Cyanobacterial Harmful Algae Blooms (CyanoHABs) in eutrophic lakes, and applies it to the prediction of CyanoHABs area in Taihu Lake. By accurately obtaining time-series data and analyzing meteorological factors, the integrated model shows better prediction effect compared to CNN and LSTM models. This study provides an effective method for predicting temporal changes in CyanoHABs area and offers new ideas for regulating inland water safety.
Article
Engineering, Environmental
Andres Vina, Jianguo Liu
Summary: As global interconnections continue to strengthen, challenges are becoming more difficult to address due to the reliance on global supply chains. Global shocks such as wars, economic recessions, and pandemics can disrupt these connections and have cascading consequences. To assess these consequences comprehensively, integrated frameworks that consider the interactions between human and natural systems are crucial. Using the metacoupling framework, this study illustrates the effects of major global shocks on global interconnectedness from the early 1900s to the 2010s. Based on the findings, actionable recommendations are made to mitigate the negative impacts of the ongoing global shock, the COVID-19 pandemic, and promote global sustainability.
Article
Marine & Freshwater Biology
Inge Christensen, Lisbeth Kjaereby Pedersen, Martin Sondergaard, Torben L. Lauridsen, Sh Tserenpil, Katherine Richardson, Cihelio A. Amorim, Juan Pablo Pacheco, Erik Jeppesen
Summary: This study provides experimental evidence for the significant grazing effect of zooplankton on phytoplankton in brackish lakes, especially at low fish density and salinities below 8 parts per thousand. However, grazing in summer was generally low in most lakes, likely due to high predation pressure on zooplankton.
Article
Environmental Sciences
Han Yang, Mu Xu, Liqing Wang, Xianyun Wang, Erik Jeppesen, Wei Zhang
Summary: Comprehensive studies on the effects of physical and chemical variables, including heavy metals, antibiotics, and microorganisms, on antibiotic resistance genes are rare. This study assessed the spatial distribution of sediment ARGs and identified key variables affecting their abundance. The findings provide new insights into the occurrence and transmission of antibiotic resistance.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Biodiversity Conservation
Yuanrui Li, Juan Tao, Yunlin Zhang, Kun Shi, Junjun Chang, Min Pan, Lirong Song, Erik Jeppesen, Qichao Zhou
Summary: Climate change and urbanization have complex interactions with phytoplankton blooms (PBs) in Lake Dianchi. Our study found that PBs in the lake had advanced initiation and longer duration, likely due to increased water temperature and reduced nutrient concentrations. However, the area and severity of PBs showed a decreasing trend, possibly attributed to increased wind speed and/or reduced nutrient levels. Urbanization, with the enhanced land surface temperature, could alter the thermodynamic characteristics and regulate the phenology and severity of PBs in the lake.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Engineering, Environmental
Yongqiang Zhou, Lili Chen, Lei Zhou, Yunlin Zhang, Kai Peng, Zhijun Gong, Kyoung-Soon Jang, Robert G. M. Spencer, Erik Jeppesen, Justin D. Brookes, Dolly N. Kothawala, Fengchang Wu
Summary: The Eastern Route of the South-to-North Water Diversion Project aims to alleviate water shortage in arid regions of northern China by diverting a substantial amount of water. The project has significant implications for the hydrological connectivity and biogeochemical cycling of dissolved organic matter (DOM) in regional lakes.
Article
Engineering, Environmental
Jianming Deng, Kun Shan, Kun Shi, Song S. Qian, Yunlin Zhang, Boqiang Qin, Guangwei Zhu
Summary: Although nutrient reduction alone is less effective in combating cyanobacterial blooms due to climate change, this study developed a model using nutrient levels and climatic factors to predict spring cyanobacterial blooms. The results showed that both climatic factors and nutrients played vital roles, with climatic factors being the primary drivers. Climate change had a 90% probability of increasing the bloom area, but nutrient reduction helped mitigate the expansion. The study provides an effective method for deriving dynamic nutrient thresholds for lake management under different climatic scenarios.
Article
Plant Sciences
Yahui Zhang, Shubin Xie, Xiaoting Wang, Muhammad Adnan Akram, Weigang Hu, Longwei Dong, Ying Sun, Hailing Li, Abraham Allan Degen, Junlan Xiong, Jinzhi Ran, Jianming Deng
Summary: This study investigated the response of plant leaf microelement concentrations and bioconcentration factors to environmental variables in drylands of China. The results showed that aridity, soil organic carbon, and electrical conductivity had positive effects, while soil pH had a negative effect on leaf microelement concentrations. Aridity indirectly affected leaf microelement bioconcentration factors by increasing soil pH and organic carbon. Woody plants were more tolerant to environmental changes than herbaceous species.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Ecology
Kaarina Weckstrom, Jan Weckstrom, Juliane Wischnewski, Thomas A. Davidson, Torben L. Lauridsen, Frank Landkildehus, Kirsten S. Christoffersen, Erik Jeppesen
Summary: With the help of paleolimnology, the relationship between diatoms and environmental drivers in the Arctic lakes and ponds of Greenland was explored. The study found that climate and lake ontogeny were the main factors determining diatom communities. The species diversity declined towards the North, and diatoms were proven to be an excellent proxy for climate-mediated lake ecosystem change in the Arctic.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Multidisciplinary Sciences
Chunrong Mi, Kai Song, Liang Ma, Jiliang Xu, Baojun Sun, Yuehua Sun, Jianguo Liu, Weiguo Du
Summary: In order to address biodiversity loss and achieve the targets of the proposed Post-2020 Global Biodiversity Framework, the Chinese government has updated the list of national key protected wildlife and expanded protected areas. However, the status of protected wildlife in these areas remains unclear. This study conducted a national assessment and proposed an optimization plan to overcome these shortcomings, including adding more protected areas and prioritizing certain regions.
Article
Environmental Sciences
Ramon Felipe Bicudo da Silva, Daniel de Castro Victoria, Fabio Avila Nossack, Andres Vina, James D. A. Millington, Simone Aparecida Vieira, Mateus Batistella, Emilio Moran, Jianguo Liu
Summary: Private lands in Brazil play a crucial role in conservation efforts, but their effectiveness is hampered by inadequate policies. A recent analysis of over 4 million rural properties revealed that the 2012 policy review had a limited impact, particularly on the Amazon Forest. The amnesty granted to small landowners prevented the restoration of millions of hectares of agricultural land with significant carbon sequestration potential.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Marine & Freshwater Biology
Xing Rao, Jichong Lu, Ping Zhong, Xiufeng Zhang, Yali Tang, Jinlei Yu, Hu He, Erik Jeppesen, Zhengwen Liu
Summary: In temperate shallow lakes, submerged macrophytes enhance zooplankton grazing and maintain a clear-water state. However, the role of macrophytes for zooplankton and their grazing potential in tropical lakes remains unclear. Our study in a tropical lake in China found that the dominance of copepods differed between basins, with cyclopoids dominating in the algal basin and calanoids in the macrophyte basins. The biomass ratios of calanoid:copepod and zooplankton:phytoplankton were higher in the macrophyte basins. Our results suggest that restoration measures involving macrophyte transplantation and fish removal can reduce fish predation and maintain clear-water state in tropical lakes, although top-down control may be weaker compared to temperate lakes.
Editorial Material
Environmental Sciences
Erik Jeppesen, Meryem Beklioglu, Egor Zadereev
Article
Environmental Sciences
Korhan Ozkan, Mustafa Korkmaz, Cihelio Alves Amorim, Gultekin Yilmaz, Meltem Koru, Yasemin Can, Juan Pablo Pacheco, Vildan Acar, Mehmet Arda Colak, Gul Canan Yavuz, Lucia Cabrera-Lamanna, Onat Arikan, Oyku Tanriverdi, Serhat Ertugrul, Irem Gamze Arik, Hande Nesli, Ilker H. Tunur, Burak Kuyumcu, Zuhal Akyurek, Can Ozen, Meryem Beklioglu, Erik Jeppesen
Summary: Salinization of freshwater ecosystems caused by climate change and water abstraction for agriculture is a major challenge. Understanding how aquatic ecosystems respond to salinization is crucial for climate change adaptation, especially in arid areas. Experimental mesocosm facilities were established in Turkey to examine the effects of salinization and climate change on shallow lake ecosystems. The experiments showed that salinization, modulated by climate, significantly impacted the structure and function of lake ecosystems. The design of the mesocosm facilities, basic results, and recommendations for conducting mesocosm experiments under saline/hypersaline conditions are presented.
Article
Environmental Sciences
Olga Tammeorg, Ingrid Chorus, Bryan Spears, Peeter Noges, Gertrud K. Nurnberg, Priit Tammeorg, Martin Sondergaard, Erik Jeppesen, Hans Paerl, Brian Huser, Jukka Horppila, Tom Jilbert, Agnieszka Budzynska, Renata Dondajewska-Pielka, Ryszard Goldyn, Sina Haasler, Seppo Hellsten, Laura H. Harkonen, Mina Kiani, Anna Kozak, Niina Kotamaki, Katarzyna Kowalczewska-Madura, Silvia Newell, Leena Nurminen, Tiina Noges, Kasper Reitzel, Joanna Rosinska, Jukka Ruuhijarvi, Soila Silvonen, Christian Skov, Tamara Vazic, Anne-Mari Ventela, Guido Waajen, Miquel Lurling
Summary: Sustainable management of lakes requires addressing ecological, economic, and social challenges, with a focus on achieving ecological improvement in a co-beneficial context. In-lake restoration measures can bring rapid ecosystem responses, especially when combined with circular economy practices. However, lake restoration approaches need to be carefully assessed to ensure they effectively address lake-specific problems, are cost-effective, and promote valuable ecosystem services.
WILEY INTERDISCIPLINARY REVIEWS-WATER
(2023)
Article
Ecology
Yingjie Li, Nan Jia, Xiang Yu, Nicholas Manning, Xin Lan, Jianguo Liu
Summary: This study makes the first attempt to develop a typology of transboundary flows and synthesizes a portfolio of quantitative and practical methods to characterize these flows. It highlights the need to recognize shared risks and goals, use system thinking, and enhance multilateral cooperation for effective governance of transboundary flows.
ECOLOGY AND SOCIETY
(2023)
