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Zhang C, Pei H, Lu C, Liu C, Wang W, Zhang X, Liu P, Lei G. Indirect herbivore biomanipulation may halt regime shift from clear to turbid after macrophyte restoration. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 313:120242. [PMID: 36162564 DOI: 10.1016/j.envpol.2022.120242] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/05/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
Eutrophication transforms clear water into turbid water in shallow lakes. Current restoration techniques focus on re-establishing the clear-water state rather than on its maintenance. We investigated the response of submerged macrophytes to temporary grass carp (Ctenopharyngodon idella) and scraping snail (Bellamya aeruginosa) introductions. We also explored the impacts of herbivores on underwater light conditions to identify their long- and short-term potential to halt regime shift from clear to turbid after clear-water state reestablishment. Herbivores reduced both the biomass of submerged macrophytes and accumulated nutrients in the tissue of submerged macrophytes. This potentially avoided the pulse of endogenous nutrient release which would have exceeded the threshold required for the regime shift from clear to turbid. However, herbivores had a non-significant impact on submerged macrophyte-reduced light attenuation coefficient, which has a positive linear relationship with water chlorophyll a. Further, grass carp and snails enhanced the inhibition ratio of submerged macrophytes to phytoplankton by 3.96 and 2.13 times, respectively. Our study provides novel findings on the potential of herbivore introduction as an indirect biomanipulation tool for halting the regime shift of shallow lakes from clear to turbid after the restoration of submerged macrophytes.
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Affiliation(s)
- Chengxiang Zhang
- School of Environment, Beijing Normal University, Beijing, 100875, China; School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Hongcui Pei
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Cai Lu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Cunqi Liu
- College of Life Sciences, Hebei University, Baoding 071002, China.
| | - Wei Wang
- Institute of Environmental Information, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiaobo Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Peizhong Liu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Guangchun Lei
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China.
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Su Y, Gan L, Li Y, Fan Z, Xie C, Liu Y, Liao Y, Ding R, Liu G, Wu J, Chen G, Sun J, Zhu W, Ma J. A novel indicator for defining plain urban river network cyanobacterial blooms: resource use efficiency. Heliyon 2022; 8:e10601. [PMID: 36212010 PMCID: PMC9535294 DOI: 10.1016/j.heliyon.2022.e10601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/17/2022] [Accepted: 09/07/2022] [Indexed: 11/29/2022] Open
Abstract
Increasing eutrophication and climate change have led to heavy cyanobacterial blooms in water diversion sources (e.g., lakes, reservoirs), which can potentially cause algae-bearing water to spread to downstream to an urban river network via diversion channels. Defining the extent of cyanobacterial blooms in an urban river network has become a novel concern in urban river management. In this paper, we investigated the physicochemical and algae community characteristics of a small, closed, urban river network, JiangXinZhou (JXZ), in the Lake Taihu basin. We propose a novel indicator, resource use efficiency (RUE), for defining the extent of cyanobacterial blooms in JXZ, whose recreational drinking water comes entirely from outside diversion sources. The results show that the JXZ's aquatic habitat conditions (mean water temperature, total nitrogen concentration, total phosphorus concentration, and nitrogen to phosphorus ratio) are highly suitable for the proliferation of cyanobacterial biomass during the high-water period. The RUE was used for calculation and shows a strong relationship with algae density, which means that it can be used as an index to define the degree of urban river cyanobacterial blooms. The findings indicate that the risk of cyanobacterial bloom is absent when the RUE is less than 46.81; blooms appear in the water bodies when the RUE reaches up to 106.68. This work provides theoretical support for the sustainable use of regional water resources.
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Affiliation(s)
- Yifan Su
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Lin Gan
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
- Corresponding author.
| | - Yun Li
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
- Corresponding author.
| | - Ziwu Fan
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Chen Xie
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Yang Liu
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Yipeng Liao
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Rui Ding
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Guoqin Liu
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Jingxiu Wu
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Guangyu Chen
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Jianhao Sun
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Wenhan Zhu
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
| | - Jingtian Ma
- Nanjing Hydraulic Research Institute, 210029 Nanjing, China
- Key Laboratory of Taihu Basin Water Resources Research and Management of Ministry of Water Resources, 210029 Nanjing, China
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Zhou Q, Zhang Y, Tao J, Ye L, Wang H, Shan K, Jeppesen E, Song L. Water depth and land-use intensity indirectly determine phytoplankton functional diversity and further regulate resource use efficiency at a multi-lake scale. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 834:155303. [PMID: 35447191 DOI: 10.1016/j.scitotenv.2022.155303] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 04/11/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Biodiversity-ecosystem functioning relationships under multiple pressures have recently been the subject of broad studies. For the key primary producer in aquatic ecosystems, phytoplankton, several studies have focused on trait-based functional diversity (FD) and the related functioning (e.g., resource use efficiency, RUE), and their linkages. However, investigations of the effects of environmental factors at different levels (e.g., land use, lake morphometry, climate and nutrients) on FD and RUE are sparse. We developed a data-driven-model framework to simultaneously elucidate the effects of multiple drivers on FD (functional diversity based on dendrograms, FDc and functional richness, FRic) and RUE (of nitrogen and phosphorus) of phytoplankton based on data from 68 Yunnan-Guizhou Plateau lakes, Southwest China. We found that the concentration of total phosphorus, which is mainly affected by land-use intensity and influenced by water depth, was the primary (positive) driver of changes in both FDc and FRic, while RUE was mainly explained by phytoplankton FD (i.e., FRic). These results indicate that water depth and land-use intensity influence indirectly phytoplankton FD and further regulate RUE. Moreover, nonlinear correlations of RUE with FRic were found, which may be caused by interspecific competition and niche differentiation of the phytoplankton community related to nutrient levels. Our finding may help managers to set trade-off targets between FD and RUE in lake ecosystems except for extremely polluted ones, in which the thresholds derived from the Bayesian network, of total phosphorus, total nitrogen and land-use intensity were approximately 0.04 mg/L, 0.50 mg/L and 244 (unitless), respectively. The probability of meeting the RUE objectives was lower in shallow lakes than in deep lakes, but for FRic the opposite was observed.
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Affiliation(s)
- Qichao Zhou
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China; Yunnan Key Laboratory of Pollution Process and Management of Plateau Lake-Watershed, Yunnan Research Academy of Eco-environmental Sciences, Kunming 650034, China.
| | - Yun Zhang
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China
| | - Juan Tao
- Yunnan Key Laboratory of International Rivers and Transboundary Eco-security, Institute of International Rivers and Eco-Security, Yunnan University, Kunming 650500, China
| | - Lin Ye
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Haijun Wang
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China
| | - Kun Shan
- Chongqing Key Laboratory of Big Data and Intelligent Computing, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.
| | - Erik Jeppesen
- Department of Ecoscience, Aarhus University, Silkeborg 8600, Denmark; Sino-Danish Centre for Education and Research, Beijing 100049, China; Limnology Laboratory, Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, Ankara 06800, Turkey; Institute of Marine Sciences, Middle East Technical University, Mersin, Turkey
| | - Lirong Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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Antosiak A, Šulčius S, Malec P, Tokodi N, Łobodzińska A, Dziga D. Cyanophage infections reduce photosynthetic activity and expression of CO 2 fixation genes in the freshwater bloom-forming cyanobacterium Aphanizomenon flos-aquae. HARMFUL ALGAE 2022; 116:102215. [PMID: 35710200 DOI: 10.1016/j.hal.2022.102215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 02/20/2022] [Accepted: 02/25/2022] [Indexed: 06/15/2023]
Abstract
Cyanobacteria play a significant role in ecosystem functioning as photosynthetic and CO2 fixing microorganisms. Whether and to what extent cyanophages alter these carbon and energy cycles in their cyanobacterial hosts is still poorly understood. In this study, we investigated changes in photosynthetic activity (PSII), expression of genes associated with the light phase of photosynthesis (psbA, petA, ndhK) and carbon metabolism (rbcL, zwf) as well as intracellular ATP and NADHP concentrations in freshwater bloom-forming filamentous cyanobacterium Aphanizomenon flos-aquae infected by cyanophage vB_AphaS-CL131. We found that PSII activity and expression level of rbcL genes, indicating potential for CO2 fixation, had decreased in response to cyanophage adsorption and DNA injection. During the period of viral DNA replication and assembly, PSII performance and gene expression remained at this decreased level and did not change significantly, indicating lack of transcriptional shutdown by the cyanophage. Combined, these observations suggest that although there is little to no interference between cyanophage DNA replication, host transcription and cellular metabolism, A. flos-aquae underwent a physiological state-shift toward lower efficiency of carbon and energy cycling. This further suggest potential cascading effect for co-occurring non-infected members of the microbial community.
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Affiliation(s)
- Adam Antosiak
- Laboratory of Metabolomics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30387 Krakow, Poland.
| | - Sigitas Šulčius
- Laboratory of Algology and Microbial Ecology, Nature Research Centre, Akademijos str. 2, 08412 Vilnius, Lithuania.
| | - Przemysław Malec
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30387 Krakow, Poland.
| | - Nada Tokodi
- Laboratory of Metabolomics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30387 Krakow, Poland; Department of Biology and Ecology, University of Novi Sad, Faculty of Sciences, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
| | - Antonia Łobodzińska
- Laboratory of Metabolomics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30387 Krakow, Poland.
| | - Dariusz Dziga
- Laboratory of Metabolomics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30387 Krakow, Poland.
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Serre-Fredj L, Chasselin L, Jolly O, Jacqueline F, Claquin P. Colimitation assessment of phytoplankton growth using a resource use efficiency approach in the Bay of Seine (French-English Channel). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 306:114487. [PMID: 35065361 DOI: 10.1016/j.jenvman.2022.114487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 01/09/2022] [Accepted: 01/09/2022] [Indexed: 06/14/2023]
Abstract
Eutrophication and dystrophy are two of the main problems affecting coastal ecosystems. In the Bay of Seine, phosphorus (P) inputs from the Seine estuary have been largely reduced in the last decade, in contrast to nitrogen (N), which leads to high N/P ratio inputs. To study the effect of dystrophy, an enrichment bioassay using water sampled from the Bay of Seine was repeated 19 times over a period of 18 months with six different enrichments. After a few days, chlorophyll a (chl a), alkaline phosphatase activity (APA), transparent exopolymeric particles (TEPs), cytometric size structure, and maximum quantum yield of photosystem II were measured. The data provide strong evidence for an N & P colimitation system in the vast majority of the incubations, as only the N + P and N + P + Si enrichments supported phytoplankton growth, and Si only appeared to play a secondary role in our incubations. A N/P ratio of 16 equal to the Redfield ratio was identified as the optimum for balanced growth, as chl a was the highest and TEP and APA production was the lowest at this ratio. To fit the requirements of the colimited system, a new resource use efficiency (RUENP) calculation was developed to account for N and P colimitation instead of only one nutrient, as is usually the case. This calculation allows better representation of RUE in dystrophic conditions, as found in many highly anthropized ecosystems. The relationships between RUENP and the size structure of the phytoplankton community were explored, and a significant positive correlation between RUENP and larger cells (>2 μm) and a negative correlation with smaller cells (<2 μm) were noted, showing a better use of nutrients by larger cells. This study highlights an increase of RUENP with the phytoplankton cell size in a colimited system.
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Affiliation(s)
- Léon Serre-Fredj
- Normandie Université, Université de Caen Normandie, Esplanade de la Paix, 14032, Caen, France; Laboratoire Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA, UMR CNRS 8067), Muséum National d'Histoire Naturelle, Sorbonne Université, Université de Caen Normandie, IRD 207, Université des Antilles. Centre de Recherches en Environnement Côtier (CREC) - Station Marine, BP49, 54, Rue du Docteur Charcot, 14530, Luc-sur-Mer, France
| | - Léo Chasselin
- Normandie Université, Université de Caen Normandie, Esplanade de la Paix, 14032, Caen, France; Centre de Recherches en Environnement Côtier (CREC) - Station Marine de l'Université de Caen Normandie, BP49, 54, Rue du Docteur Charcot - 14530Ifremer LER/N, Avenue du Général de Gaulle, 14520, Port-en-Bessin, France
| | - Orianne Jolly
- Normandie Université, Université de Caen Normandie, Esplanade de la Paix, 14032, Caen, France; Centre de Recherches en Environnement Côtier (CREC) - Station Marine de l'Université de Caen Normandie, BP49, 54, Rue du Docteur Charcot - 14530Ifremer LER/N, Avenue du Général de Gaulle, 14520, Port-en-Bessin, France
| | - Franck Jacqueline
- Ifremer LER/N, Avenue du Général de Gaulle, 14520, Port-en-Bessin, France
| | - Pascal Claquin
- Normandie Université, Université de Caen Normandie, Esplanade de la Paix, 14032, Caen, France; Laboratoire Biologie des ORganismes et Ecosystèmes Aquatiques (BOREA, UMR CNRS 8067), Muséum National d'Histoire Naturelle, Sorbonne Université, Université de Caen Normandie, IRD 207, Université des Antilles. Centre de Recherches en Environnement Côtier (CREC) - Station Marine, BP49, 54, Rue du Docteur Charcot, 14530, Luc-sur-Mer, France.
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Lehtinen S, Suikkanen S, Hällfors H, Tuimala J, Kuosa H. Phytoplankton Morpho-Functional Trait Variability along Coastal Environmental Gradients. Microorganisms 2021; 9:2477. [PMID: 34946082 PMCID: PMC8708429 DOI: 10.3390/microorganisms9122477] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 11/26/2021] [Accepted: 11/27/2021] [Indexed: 11/16/2022] Open
Abstract
We utilized the trait-based approach in a novel way to examine how specific phytoplankton traits are related to physical features connected to global change, water quality features connected to catchment change, and nutrient availability connected to nutrient loading. For the analyses, we used summertime monitoring data originating from the coastal northern Baltic Sea and generalized additive mixed modeling (GAMM). Of the physical features connected to global climate change, temperature was the most important affecting several studied traits. Nitrogen-fixing, buoyant, non-motile, and autotrophic phytoplankton, as well as harmful cyanobacteria, benefited from a higher temperature. Salinity and stratification did not have clear effects on the traits. Water transparency, which in the Baltic Sea is connected to catchment change, had a mostly negative relation to the studied traits. Harmfulness was negatively correlated with transparency, while the share of non-harmful and large-sized phytoplankton was positively related to it. We used nutrient loading source type and total phosphorus (TP) as proxies for nutrient availability connected to anthropogenic eutrophication. The nutrient loading source type did not relate to any of the traits. Our result showing that N-fixing was not related to TP is discussed. The regionality analysis demonstrated that traits should be calculated in both absolute terms (biomass) and proportions (share of total biomass) to get a better view of community changes and to potentially supplement the environmental status assessments.
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Affiliation(s)
- Sirpa Lehtinen
- Marine Research Centre, Finnish Environment Institute (SYKE), 00790 Helsinki, Finland; (S.S.); (H.H.); (H.K.)
| | - Sanna Suikkanen
- Marine Research Centre, Finnish Environment Institute (SYKE), 00790 Helsinki, Finland; (S.S.); (H.H.); (H.K.)
| | - Heidi Hällfors
- Marine Research Centre, Finnish Environment Institute (SYKE), 00790 Helsinki, Finland; (S.S.); (H.H.); (H.K.)
| | | | - Harri Kuosa
- Marine Research Centre, Finnish Environment Institute (SYKE), 00790 Helsinki, Finland; (S.S.); (H.H.); (H.K.)
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Zhang C, Pei H, Liu C, Wang W, Lei G. Monitoring air quality can help for lakes excessive proliferation of phytoplankton control. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 289:117959. [PMID: 34435566 DOI: 10.1016/j.envpol.2021.117959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/19/2021] [Accepted: 08/10/2021] [Indexed: 06/13/2023]
Abstract
Previous studies assessing excessive proliferation of phytoplankton (EPP) in lakes are generally based on single investigation and focused on limited environmental factors; meanwhile, less attention has been paid to lakes susceptibility to EPP. Here, we identify the priority of lakes for EPP control in a basin by assessing EPP in multiple lakes and identify the key factors related to lakes' vulnerability to EPP. Field measurements, as well as multi-source survey data acquisition were conducted for 63 shallow lakes in the middle-lower Yangtze River basin. Resource-use efficiency by phytoplankton (RUE) was then used to represent lake susceptibility to EPP. Generalized linear models were used to assess the relative importance of environmental factors for RUE. We found that most lakes (76.19 %) were not suitable for recreation, due to health concern attributed to irritative or allergenic risk caused by EPP. Phosphorus was the primary limiting nutrient for EPP (74.60 % of lakes) which should be limited to < 0.09 mg/L. The linear model that included latitude, particulate matter 10, and precipitation explained 27.60 % of the variation of RUETP among lakes. In contrast, the linear model that included ozone, Secchi depth, and wind speed explained 19.41 % of the variation of RUETN among lakes. The key factor related to RUETP and RUETN was particulate matter 10 and ozone, respectively, both of which potentially increase RUE or reflect it. Our results suggest that integrating multiple survey datasets is critical for lakes EPP assessment in a basin, while lakes impacted by air pollution are a high priority for EPP control.
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Affiliation(s)
- Chengxiang Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China
| | - Hongcui Pei
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Cunqi Liu
- College of Life Sciences, Hebei University, Baoding, 071002, China
| | - Wei Wang
- Institute of Environmental Information, Chinese Research Academy of Environment Sciences, Beijing, 100012, China
| | - Guangchun Lei
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China.
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Zhang C, Pei H, Jia Y, Bi Y, Lei G. Effects of air quality and vegetation on algal bloom early warning systems in large lakes in the middle-lower Yangtze River basin. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 285:117455. [PMID: 34090070 DOI: 10.1016/j.envpol.2021.117455] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/06/2021] [Accepted: 05/22/2021] [Indexed: 06/12/2023]
Abstract
Studies of algal bloom early warning systems have rarely paid attention to the dynamics of excessive proliferation of phytoplankton (EPP), which occurs prior to algal blooms, or to the sensitivity of a lake to EPP based on multiple environmental factors. In this study, we investigated EPP dynamics in large lakes and identified major factors that influenced the lake's vulnerability to EPP, to improve algal bloom early warning systems. High temporal moderate resolution imaging spectroradiometer (MODIS) images and multi-source daily site monitoring data of large lakes in the middle-lower Yangtze River basin were analyzed. Then, the floating algal index (FAI) and resource use efficiency (RUE) by phytoplankton were used to investigate the EPP dynamics and lake's vulnerability to EPP, respectively. Moreover, generalized linear models were used to assess the relative importance of environmental factors on RUE. The results indicate that the lakes freely connected (FC) to the Yangtze River (Dongting Lake and Poyang Lake) had lower FAIs but higher RUEs than the non-connected lakes (NC; Chaohu Lake and Taihu Lake). The key factors affecting RUE-FC were standard deviation of water level within 30 days(WL30), particulate matter <10 μm(PM10), and relative humidity(Hum), which explained 15.91% of the variations in RUE. The key factors affecting RUE-NC were ozone(O3), basin normalized difference vegetation index standard deviation(BNDVISD), and dissolved oxygen(DO), which explained 35.28% of the variations in RUE. These results emphasize the importance of air quality in influencing or reflecting EPP risks in large lakes. In addition, basin vegetation and hydrological rhythms can influence NH4+ through non-point source loading. Algal bloom early warning systems can be improved by routine monitoring and forecasting of potential environmental factors such as air quality and basin vegetation.
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Affiliation(s)
- Chengxiang Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China.
| | - Hongcui Pei
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | - Yifei Jia
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China
| | - Yeliang Bi
- School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan, 056038, China
| | - Guangchun Lei
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, 100083, China.
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Suikkanen S, Uusitalo L, Lehtinen S, Lehtiniemi M, Kauppila P, Mäkinen K, Kuosa H. Diazotrophic cyanobacteria in planktonic food webs. FOOD WEBS 2021. [DOI: 10.1016/j.fooweb.2021.e00202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Koksharova OA, Butenko IO, Pobeguts OV, Safronova NA, Govorun VM. β-N-Methylamino-L-Alanine (BMAA) Causes Severe Stress in Nostoc sp. PCC 7120 Cells under Diazotrophic Conditions: A Proteomic Study. Toxins (Basel) 2021; 13:325. [PMID: 33946501 PMCID: PMC8147232 DOI: 10.3390/toxins13050325] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/07/2021] [Accepted: 04/28/2021] [Indexed: 12/24/2022] Open
Abstract
Non-proteinogenic neurotoxic amino acid β-N-methylamino-L-alanine (BMAA) is synthesized by cyanobacteria, diatoms, and dinoflagellates, and is known to be a causative agent of human neurodegenerative diseases. Different phytoplankton organisms' ability to synthesize BMAA could indicate the importance of this molecule in the interactions between microalgae in nature. We were interested in the following: what kinds of mechanisms underline BMAA's action on cyanobacterial cells in different nitrogen supply conditions. Herein, we present a proteomic analysis of filamentous cyanobacteria Nostoc sp. PCC 7120 cells that underwent BMAA treatment in diazotrophic conditions. In diazotrophic growth conditions, to survive, cyanobacteria can use only biological nitrogen fixation to obtain nitrogen for life. Note that nitrogen fixation is an energy-consuming process. In total, 1567 different proteins of Nostoc sp. PCC 7120 were identified by using LC-MS/MS spectrometry. Among them, 123 proteins belonging to different functional categories were selected-due to their notable expression differences-for further functional analysis and discussion. The presented proteomic data evidences that BMAA treatment leads to very strong (up to 80%) downregulation of α (NifD) and β (NifK) subunits of molybdenum-iron protein, which is known to be a part of nitrogenase. This enzyme is responsible for catalyzing nitrogen fixation. The genes nifD and nifK are under transcriptional control of a global nitrogen regulator NtcA. In this study, we have found that BMAA impacts in a total of 22 proteins that are under the control of NtcA. Moreover, BMAA downregulates 18 proteins that belong to photosystems I or II and light-harvesting complexes; BMAA treatment under diazotrophic conditions also downregulates five subunits of ATP synthase and enzyme NAD(P)H-quinone oxidoreductase. Therefore, we can conclude that the disbalance in energy and metabolite amounts leads to severe intracellular stress that induces the upregulation of stress-activated proteins, such as starvation-inducible DNA-binding protein, four SOS-response enzymes, and DNA repair enzymes, nine stress-response enzymes, and four proteases. The presented data provide new leads into the ecological impact of BMAA on microalgal communities that can be used in future investigations.
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Affiliation(s)
- Olga A. Koksharova
- Lomonosov Moscow State University, Belozersky Institute of Physico-Chemical Biology, Leninskie Gory, 1-40, 119991 Moscow, Russia;
- Institute of Molecular Genetics of National Research Center “Kurchatov Institute”, Kurchatov Square, 2, 123182 Moscow, Russia
| | - Ivan O. Butenko
- Scientific-Research Institute of Physical-Chemical Medicine, 119435 Moscow, Russia; (I.O.B.); (O.V.P.); (V.M.G.)
| | - Olga V. Pobeguts
- Scientific-Research Institute of Physical-Chemical Medicine, 119435 Moscow, Russia; (I.O.B.); (O.V.P.); (V.M.G.)
| | - Nina A. Safronova
- Lomonosov Moscow State University, Belozersky Institute of Physico-Chemical Biology, Leninskie Gory, 1-40, 119991 Moscow, Russia;
| | - Vadim M. Govorun
- Scientific-Research Institute of Physical-Chemical Medicine, 119435 Moscow, Russia; (I.O.B.); (O.V.P.); (V.M.G.)
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11
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Yang JR, Yu X, Chen H, Kuo YM, Yang J. Structural and functional variations of phytoplankton communities in the face of multiple disturbances. J Environ Sci (China) 2021; 100:287-297. [PMID: 33279042 DOI: 10.1016/j.jes.2020.07.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/31/2020] [Accepted: 07/31/2020] [Indexed: 06/12/2023]
Abstract
The global decline of freshwater biodiversity caused by climate change and human activities are supposed to disrupt ecosystem services related to water quality and alter the structure and function of aquatic communities across space and time, yet the effects of the combination of these factors on plankton community ecosystem has received relatively little attention. This study aimed to explore the impacts of disturbances (e.g. human activity, temperature, precipitation, and water level) on phytoplankton community structure (i.e. community evenness and community composition) and function (i.e. resource use efficiency) in four subtropical reservoirs over 7 years from 2010 to 2016. Our results showed that community turnover (measured as community dissimilarity) was positively related to disturbance frequency, but no significant correlation was found between phytoplankton biodiversity (i.e. evenness) and disturbance frequency. Phytoplankton resource use efficiency (RUE = phytoplankton biomass/ total phosphorus) was increased with a higher frequency of disturbance with an exception of cyanobacteria. The RUE of Cyanobacteria and diatoms showed significantly negative correlations with their community evenness, while the RUE of Chlorophyta exhibited a positive correlation with their community turnover. We suggest that multiple environmental disturbances may play crucial roles in shaping the structure and functioning of plankton communities in subtropical reservoirs, and mechanism of this process can provide key information for freshwater uses, management and conservation.
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Affiliation(s)
- Jun R Yang
- Engineering Research Center of Ecology and Agricultural Use of Wetland (Ministry of Education), College of Agriculture, Yangtze University, Jingzhou 434025, China; Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Xiaoqing Yu
- Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Huihuang Chen
- Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Yi-Ming Kuo
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Jun Yang
- Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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12
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Han SI, Kim S, Choi KY, Lee C, Park Y, Choi YE. Control of a toxic cyanobacterial bloom species, Microcystis aeruginosa, using the peptide HPA3NT3-A2. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:32255-32265. [PMID: 31598929 DOI: 10.1007/s11356-019-06306-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 08/26/2019] [Indexed: 06/10/2023]
Abstract
Microcystis aeruginosa, a species of freshwater cyanobacteria, is known to be one of the dominant species causing cyanobacterial harmful algal blooms (CyanoHABs). M. aeruginosa blooms have the potential to produce neurotoxins and peptide hepatotoxins, such as microcystins and lipopolysaccharides (LPSs). Currently, technologies for CyanoHAB control do not provide any ultimate solution because of the secondary pollution associated with the control measures. In this study, we attempted to use the peptide HPA3NT3-A2, which has been reported to be nontoxic and has antimicrobial properties, for the development of an eco-friendly control against CyanoHABs. HPA3NT3-A2 displayed significant algicidal effects against M. aeruginosa cells. HPA3NT3-A2 induced cell aggregation and flotation (thereby facilitating harvest), inhibited cell growth through sedimentation, and eventually destroyed the cells. HPA3NT3-A2 had no algicidal effect on other microalgal species such as Haematococcus pluvialis and Chlorella vulgaris. Additionally, HPA3NT3-A2 was not toxic to Daphnia magna. The algicidal mechanism of HPA3NT3-A2 was intracellular penetration. The results of this study suggest the novel possibility of controlling CyanoHABs using HPA3NT3-A2.
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Affiliation(s)
- Sang-Il Han
- Division of Environmental Science & Ecological Engineering, Korea University, Seoul, 02841, Korea
| | - Sok Kim
- Division of Environmental Science & Ecological Engineering, Korea University, Seoul, 02841, Korea
| | - Ki Young Choi
- School of Chemical Engineering, College of Engineering, Sungkyunkwan University, Suwon, 16419, Korea
| | - Changsu Lee
- Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, 61755, Korea
| | - Yoonkyung Park
- Research Center for Proteinaceous Materials (RCPM), Chosun University, Gwangju, 61452, Korea.
| | - Yoon-E Choi
- Division of Environmental Science & Ecological Engineering, Korea University, Seoul, 02841, Korea.
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13
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Berner C, Bertos-Fortis M, Pinhassi J, Legrand C. Response of Microbial Communities to Changing Climate Conditions During Summer Cyanobacterial Blooms in the Baltic Sea. Front Microbiol 2018; 9:1562. [PMID: 30090087 PMCID: PMC6068395 DOI: 10.3389/fmicb.2018.01562] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 06/25/2018] [Indexed: 11/13/2022] Open
Abstract
Frequencies and biomass of Baltic Sea cyanobacterial blooms are expected to be higher in future climate conditions, but also of longer duration as a result of increased sea surface temperature. Concurrently, climate predictions indicate a reduced salinity in the Baltic Sea. These climate-driven changes are expected to alter not solely the phytoplankton community but also the role of microbial communities for nutrient remineralization. Here, we present the response of summer plankton communities (filamentous cyanobacteria, picocyanobacteria, and heterotrophic bacteria) to the interplay of increasing temperature (from 16 to 18°C and 20°C) and reduced salinity (from salinity 6.9 to 5.9) in the Baltic Proper (NW Gotland Sea) using a microcosm approach. Warmer temperatures led to an earlier peak of cyanobacterial biomass, while yields were reduced. These conditions caused a decrease of nitrogen-fixers (Dolichospermum sp.) biomass, while non nitrogen-fixers (Pseudanabaena sp.) increased. Salinity reduction did not affect cyanobacterial growth nor community composition. Among heterotrophic bacteria, Actinobacteria showed preference for high temperature, while Gammaproteobacteria thrived at in situ temperature. Heterotrophic bacteria community changed drastically at lower salinity and resembled communities at high temperature. Picocyanobacteria and heterotrophic bacterial biomass had a pronounced increase associated with the decay of filamentous cyanobacteria. This suggests that shifts in community composition of heterotrophic bacteria are influenced both directly by abiotic factors (temperature and salinity) and potentially indirectly by cyanobacteria. Our findings suggest that at warmer temperature, lower yield of photosynthetic cyanobacteria combined with lower proportion of nitrogen-fixers in the community could result in lower carbon export to the marine food web with consequences for the decomposer community of heterotrophic bacteria.
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Affiliation(s)
- Christoffer Berner
- Department of Biology and Environmental Science, Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar, Sweden
| | - Mireia Bertos-Fortis
- Department of Biology and Environmental Science, Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar, Sweden
| | - Jarone Pinhassi
- Department of Biology and Environmental Science, Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar, Sweden
| | - Catherine Legrand
- Department of Biology and Environmental Science, Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar, Sweden
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14
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Tromas N, Taranu ZE, Martin BD, Willis A, Fortin N, Greer CW, Shapiro BJ. Niche Separation Increases With Genetic Distance Among Bloom-Forming Cyanobacteria. Front Microbiol 2018; 9:438. [PMID: 29636727 PMCID: PMC5880894 DOI: 10.3389/fmicb.2018.00438] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 02/26/2018] [Indexed: 11/13/2022] Open
Abstract
Bacterial communities are composed of distinct groups of potentially interacting lineages, each thought to occupy a distinct ecological niche. It remains unclear, however, how quickly niche preference evolves and whether more closely related lineages are more likely to share ecological niches. We addressed these questions by following the dynamics of two bloom-forming cyanobacterial genera over an 8-year time-course in Lake Champlain, Canada, using 16S amplicon sequencing and measurements of several environmental parameters. The two genera, Microcystis (M) and Dolichospermum (D), are frequently observed simultaneously during bloom events and thus have partially overlapping niches. However, the extent of their niche overlap is debated, and it is also unclear to what extent niche partitioning occurs among strains within each genus. To identify strains within each genus, we applied minimum entropy decomposition (MED) to 16S rRNA gene sequences. We confirmed that at a genus level, M and D have different preferences for nitrogen and phosphorus concentrations. Within each genus, we also identified strains differentially associated with temperature, precipitation, and concentrations of nutrients and toxins. In general, niche similarity between strains (as measured by co-occurrence over time) declined with genetic distance. This pattern is consistent with habitat filtering - in which closely related taxa are ecologically similar, and therefore tend to co-occur under similar environmental conditions. In contrast with this general pattern, similarity in certain niche dimensions (notably particulate nitrogen and phosphorus) did not decline linearly with genetic distance, and instead showed a complex polynomial relationship. This observation suggests the importance of processes other than habitat filtering - such as competition between closely related taxa, or convergent trait evolution in distantly related taxa - in shaping particular traits in microbial communities.
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Affiliation(s)
- Nicolas Tromas
- Département de Sciences Biologiques, Université de Montréal, Montreal, QC, Canada
| | - Zofia E Taranu
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Bryan D Martin
- Department of Statistics, University of Washington, Seattle, WA, United States
| | - Amy Willis
- Department of Statistics, University of Washington, Seattle, WA, United States.,Department of Biostatistics, University of Washington, Seattle, WA, United States
| | - Nathalie Fortin
- Energy, Mining and Environment, National Research Council Canada, Montreal, QC, Canada
| | - Charles W Greer
- Energy, Mining and Environment, National Research Council Canada, Montreal, QC, Canada
| | - B Jesse Shapiro
- Département de Sciences Biologiques, Université de Montréal, Montreal, QC, Canada
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15
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Eigemann F, Schwartke M, Schulz-Vogt H. Niche separation of Baltic Sea cyanobacteria during bloom events by species interactions and autecological preferences. HARMFUL ALGAE 2018; 72:65-73. [PMID: 29413385 DOI: 10.1016/j.hal.2018.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/12/2017] [Accepted: 01/03/2018] [Indexed: 06/08/2023]
Abstract
Cyanobacterial blooms regularly occur in the Baltic Sea during the summer months, with filamentous, heterocystous Nodularia spumigena and Dolichospermum sp. and the coccoid picocyanobacterium Synechococcus spp. as important species. Under calm conditions, N. spumigena accumulate at the surface, whereas Dolichospermum sp. and Synechococcus sp. remain at the subsurface, in the upper water layer. This vertical separation allows co-occurring species to compete for the same resources. The factors that determine the vertical distribution within blooms, however, are mostly unknown. The present study examined the growth rates of these three cyanobacterial species in a two-factorial experiment, with temperature (16 and 24 °C) and radiation (38 and 150 μmol photons m-2 s-1) conditions mimicking those at the water surface and directly below. To determine whether interactions between the three species influenced their growth rates (and therewith also their vertical distribution), paired and multi-species cultures were established. In the single-species cultures, the autecological preferences of the species matched the assumed natural occurrence in bloom events: N. spumigena grew best under high and Dolichospermum sp. and Synechococcus sp. under low light conditions (maximum growth rates at the preferred conditions: μ = 0.48 ± 0.017, 0.88 ± 0.092, and 0.67 ± 0.012, respectively). High temperatures were tolerated by N. spumigena, but inhibited the growth of Dolichospermum sp. and Synechococcus sp. These results suggested that the factors resulting in the vertical separation of species within a bloom are species-specific: N. spumigena responded predominantly to irradiance and only slightly to temperature, Dolichospermum sp. was intensely affected by temperature and less by irradiance, and Synechococcus sp. responded more strongly to irradiance than to temperature. The interactions in paired and multi-species cultures revealed beneficial and detrimental effects, depending on species composition and abiotic conditions. Under the environmental conditions in which the three species occur, however, similar interactions resulted in no or only slight inhibition. Our observations demonstrate how autecological preferences together with the avoidance of negative interactions determine the vertical distribution of cyanobacteria during bloom events in the Baltic Sea.
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Affiliation(s)
- Falk Eigemann
- Leibniz-Institute for Baltic Sea Research Warnemünde, Department of Biological Oceanography, Seestr. 15, 18119 Rostock, Germany.
| | - Marc Schwartke
- Universität Rostock, Albert-Einstein-Str. 3, 18059 Rostock, Germany.
| | - Heide Schulz-Vogt
- Leibniz-Institute for Baltic Sea Research Warnemünde, Department of Biological Oceanography, Seestr. 15, 18119 Rostock, Germany.
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16
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Liu Y, Chen S, Zhang J, Li X, Gao B. Stimulation effects of ciprofloxacin and sulphamethoxazole inMicrocystis aeruginosaand isobaric tag for relative and absolute quantitation-based screening of antibiotic targets. Mol Ecol 2016; 26:689-701. [DOI: 10.1111/mec.13934] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 11/02/2016] [Accepted: 11/16/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Ying Liu
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse; School of Environmental Science and Engineering; Shandong University; Jinan 250100 China
| | - Shi Chen
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse; School of Environmental Science and Engineering; Shandong University; Jinan 250100 China
| | - Jian Zhang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse; School of Environmental Science and Engineering; Shandong University; Jinan 250100 China
| | - Xuewen Li
- School of Public Health; Shandong University; Jinan 250100 China
| | - Baoyu Gao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse; School of Environmental Science and Engineering; Shandong University; Jinan 250100 China
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17
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Klais R, Norros V, Lehtinen S, Tamminen T, Olli K. Community assembly and drivers of phytoplankton functional structure. Funct Ecol 2016. [DOI: 10.1111/1365-2435.12784] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Riina Klais
- Institute of Ecology and Earth Sciences University of Tartu 51005 Tartu Estonia
| | - Veera Norros
- Marine Research Centre Finnish Environmental Institute 00251 Helsinki Finland
| | - Sirpa Lehtinen
- Marine Research Centre Finnish Environmental Institute 00251 Helsinki Finland
| | - Timo Tamminen
- Marine Research Centre Finnish Environmental Institute 00251 Helsinki Finland
| | - Kalle Olli
- Institute of Ecology and Earth Sciences University of Tartu 51005 Tartu Estonia
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