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Lu W, Deng X, Zhao Z, Ren R, Rao X, Xie P, Chen J. Influence of environmental filtering and spatial processes on macroinvertebrate community in urban lakes in the Taihu Lake Basin, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:37010-37019. [PMID: 38760599 DOI: 10.1007/s11356-024-33694-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 05/12/2024] [Indexed: 05/19/2024]
Abstract
Studies identifying the relative importance of multiple ecological processes in macroinvertebrate communities in urban lakes at a basin scale are rare. In this study, 14 urban lakes in the Taihu Lake Basin were selected to explore the relative importance of environmental filtering and spatial processes in the assembly of macroinvertebrate communities. Our findings revealed significant spatiotemporal variations in macroinvertebrate communities, both between lakes and across seasons. We found that environmental filtering exerted a greater influence on taxonomic total beta diversity and its individual components (species turnover and nestedness) compared to spatial processes. Key environmental variables such as water depth, water temperature, total dissolved solids, chlorophyll a, and lake surface area were found to be crucial in shaping macroinvertebrate communities within these urban lakes. The observed high spatial heterogeneity in environmental conditions, along with intermediate basin areas, good connectivity and short distances between lakes, and the high dispersal ability of dominant taxa, likely contributed to the dominance of environmental filtering in macroinvertebrate community assembly. Our study contributes to a better understanding of the underlying mechanisms governing macroinvertebrate community assembly in urban lakes, thereby providing valuable insights for studies on community ecology and water environmental protection in urban lakes.
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Affiliation(s)
- Wenze Lu
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xuwei Deng
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Zixin Zhao
- College of Environment & Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Ren Ren
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiao Rao
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ping Xie
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650091, China
| | - Jun Chen
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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Wu L, Zhang L, Yuan L, Liao Q, Xiang J, Zhang D, Qiu T, Liu J, Guo J. Spatio-temporal variation of toxin-producing gene abundance in Microcystis aeruginosa from Poyang Lake. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:2930-2943. [PMID: 38079038 DOI: 10.1007/s11356-023-31284-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/24/2023] [Indexed: 01/18/2024]
Abstract
Microcystis aeruginosa (M. aeruginosa) causes massive blooms in eutrophic freshwater and releases microcystin. Poyang Lake is the largest freshwater lake in China and has kept a mid-nutrient level in recent years. However, there is little research on microcystin production in Poyang Lake. In this study, water and sediment samples from ten sampling sites in Poyang Lake were collected from May to December in 2020, and from January to April in 2021 respectively. Microcystis genes (mcyA, mcyB, 16 s rDNA) were quantified by real-time fluorescence quantitative PCR analysis, and then the spatial and temporal variation of mcy genes, physicochemical factors, and bacterial population structure in the lake was analyzed. The relationship between the abundance of mcy genes and physicochemical factors in water column was also revealed. Results indicated that the microcystin-producing genes mcyA and mcyB showed significant differences in spatial and temporal levels as well, which is closely related to the physicochemical factors especially the water temperature (p < 0.05) and the nitrogen content (p < 0.05). The abundance of mcy genes in the sediment in December affected the abundance of mcy genes in the water column in the next year, while the toxic Microcystis would accumulate in the sediment. In addition to the toxic Microcystis, we also found a large number of non-toxic Microcystis in the water column and sediment, and the ratio of toxic to non-toxic species can also affect the toxicity production of M. aeruginosa. Overall, the results showed that M. aeruginosa toxin-producing genes in Poyang Lake distributed spatially and temporally which related to the physicochemical factors of Poyang Lake.
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Affiliation(s)
- Lin Wu
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, 330200, People's Republic of China
- Institute WUT-AMU, Wuhan University of Technology, Wuhan, 430070, China
| | - Li Zhang
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, 330200, People's Republic of China
| | - Lijuan Yuan
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, 330200, People's Republic of China
| | - Qiegen Liao
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, 330200, People's Republic of China
| | - Jianjun Xiang
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, 330200, People's Republic of China
| | - Dawen Zhang
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanlian Road 602, Nanchang, 330200, People's Republic of China.
| | - Tong Qiu
- Institute WUT-AMU, Wuhan University of Technology, Wuhan, 430070, China
| | - Jutao Liu
- Jiangxi Provincial Institute of Water Sciences, Nanchang, 330200, Jiangxi, China
| | - Junhui Guo
- Institute WUT-AMU, Wuhan University of Technology, Wuhan, 430070, China
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3
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Lin Y, Zhong W, Zhang X, Zhou X, He L, Lv J, Zhao Z. Environmental DNA metabarcoding revealed the impacts of anthropogenic activities on phytoplankton diversity in Dianchi Lake and its three inflow rivers. Ecol Evol 2023; 13:e10088. [PMID: 37214604 PMCID: PMC10196938 DOI: 10.1002/ece3.10088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 04/17/2023] [Accepted: 04/27/2023] [Indexed: 05/24/2023] Open
Abstract
Phytoplankton diversity is closely related to environmental variables and has been widely used in ecological health assessment of rivers and lakes. Combining advantages of DNA-based identification and high-throughput sequencing technology, environmental DNA (eDNA) metabarcoding permits a new measurement for biodiversity monitoring in aquatic ecosystems. However, it had rarely been used to explore the variability and similarity of phytoplankton diversity between lake and its inflow rivers and the effects of environmental variables on phytoplankton. This study utilized eDNA metabarcoding to investigate the spatial distribution of phytoplankton and the impacts of environmental variables on the phytoplankton diversity in Dianchi Lake (one of the most polluted urban lakes in China) and its main inflow rivers (Panlong River, Baoxiang River, and Chai River). A total of 243 distinct phytoplankton taxa were detected, covering 9 phyla, 30 classes, 84 orders, and 132 families, and the taxonomic richness of rivers was higher than that of Dianchi Lake. Distinct biodiversity patterns (e.g., community structure, dominant taxon, ɑ-diversity) were exhibited among Dianchi Lake and its three inflow rivers, but similar biodiversity patterns were also observed in Dianchi Lake and the estuarine sites. The patterns of phytoplankton diversity were closely related to environmental variables, which were associated with pollution sources from different anthropogenic activities (e.g., urbanization, water diversion, industrial and agricultural activities). The primary environmental variables correlated with phytoplankton diversity varied in different habitats. The total phosphorus (TP) and chemical oxygen demand (COD) positively correlated with the phytoplankton community structures in Dianchi Lake, whereas negatively correlated in Panlong River and Baoxiang River. The total nitrogen (TN) positively correlated with the phytoplankton community structures in Baoxiang River and Chai River but negatively correlated in Dianchi Lake. Overall, this study provides insights on the phytoplankton diversity monitoring and the conservation of its diversity and healthy management of Dianchi Lake.
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Affiliation(s)
- Yuanyuan Lin
- Academician Workstation for Ecological Health Assessment and Rehabilitation of Rivers and Lakes in Kunming, Key Laboratory of River and Lake Ecological Health Assessment and Restoration in Yunnan Province, Kunming Dianchi Lake Environmental Protection Collaborative Research CenterKunming UniversityKunmingChina
| | - Wenjun Zhong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the EnvironmentNanjing UniversityNanjingChina
| | - Xiaowei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the EnvironmentNanjing UniversityNanjingChina
| | - Xiaohua Zhou
- Academician Workstation for Ecological Health Assessment and Rehabilitation of Rivers and Lakes in Kunming, Key Laboratory of River and Lake Ecological Health Assessment and Restoration in Yunnan Province, Kunming Dianchi Lake Environmental Protection Collaborative Research CenterKunming UniversityKunmingChina
| | - Liwei He
- Academician Workstation for Ecological Health Assessment and Rehabilitation of Rivers and Lakes in Kunming, Key Laboratory of River and Lake Ecological Health Assessment and Restoration in Yunnan Province, Kunming Dianchi Lake Environmental Protection Collaborative Research CenterKunming UniversityKunmingChina
| | - Jiacheng Lv
- Academician Workstation for Ecological Health Assessment and Rehabilitation of Rivers and Lakes in Kunming, Key Laboratory of River and Lake Ecological Health Assessment and Restoration in Yunnan Province, Kunming Dianchi Lake Environmental Protection Collaborative Research CenterKunming UniversityKunmingChina
| | - Zheng Zhao
- Academician Workstation for Ecological Health Assessment and Rehabilitation of Rivers and Lakes in Kunming, Key Laboratory of River and Lake Ecological Health Assessment and Restoration in Yunnan Province, Kunming Dianchi Lake Environmental Protection Collaborative Research CenterKunming UniversityKunmingChina
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Cai Y, Dong R, Kattel G, Zhang Y, Peng K, Gong Z. Macroinvertebrate diversity and ecosystem functioning across the eutrophication gradients of the middle and lower reaches of Yangtze River lakes (China). Ecol Evol 2023; 13:e9751. [PMID: 36699570 PMCID: PMC9846310 DOI: 10.1002/ece3.9751] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 12/23/2022] [Accepted: 01/04/2023] [Indexed: 01/19/2023] Open
Abstract
Biodiversity, which strengthens ecosystem stability, ecosystem function, and ecosystem services, is threatened by anthropogenic perturbation and climate change worldwide. However, despite the study of the role of biodiversity in multiple facets of freshwater ecosystems, the linkages between macroinvertebrates diversity and ecosystem functioning have not yet been well-assessed in eutrophication gradients of lowland river-floodplain systems. In this study, we have examined the relationship between macroinvertebrates diversity (species diversity, functional diversity, phylogenetic diversity) and macroinvertebrates biomass across the three typically featured eutrophication gradients: "MACROPHYTE," "TRANSITION," and "PHYTOPLANKTON," of floodplain lakes in the middle and lower reaches of the Yangtze River (China). Our results suggest that macroinvertebrates diversity in three different lacustrine conditions, biomass, and the relationship between diversity and biomass varied along eutrophication gradients. Functional richness and variance (divergence in taxon community) were the two important macroinvertebrate diversity indices, which accounted for the largest amount of variation in the biomass (63% in PHYTOPLANKTON lakes and 57% in MACROPHYTE lakes, respectively). We also found that the macrophyte coverage is more important than the relative abundance in maintaining the macroinvertebrates diversity and biomass in lowland Yangtze floodplain lake systems, while the relative abundance of macrophyte would change the BEF relationship. Our results demonstrate the functional performance of Yangtze River lakes, which would change with increased nutrient loading and decreased macrophyte coverage and would highlight the significance of the restoration of macrophytes to reduce nutrient loads.
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Affiliation(s)
- Yongjiu Cai
- Key Laboratory of Watershed Geographic SciencesNanjing Institute of Geography and Limnology, Chinese Academy of SciencesNanjingChina,University of Chinese Academy of SciencesBeijingChina
| | - Rui Dong
- Key Laboratory of Watershed Geographic SciencesNanjing Institute of Geography and Limnology, Chinese Academy of SciencesNanjingChina,University of Chinese Academy of SciencesBeijingChina
| | - Giri Kattel
- School of Geographical SciencesNanjing University of Information Science and TechnologyNanjingChina,Department of Infrastructure EngineeringThe University of MelbourneMelbourneVictoriaAustralia,Department of Hydraulic EngineeringTshinghua UniversityBeijingChina
| | - You Zhang
- Key Laboratory of Watershed Geographic SciencesNanjing Institute of Geography and Limnology, Chinese Academy of SciencesNanjingChina
| | - Kai Peng
- Key Laboratory of Watershed Geographic SciencesNanjing Institute of Geography and Limnology, Chinese Academy of SciencesNanjingChina
| | - Zhijun Gong
- Key Laboratory of Watershed Geographic SciencesNanjing Institute of Geography and Limnology, Chinese Academy of SciencesNanjingChina,University of Chinese Academy of SciencesBeijingChina
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5
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Coelho AP, Henriques M, Rocha AD, Paulino J, Schaars LK, Ramos C, de Barros AR, Catry T, Granadeiro JP, Piersma T, Alves JA. Spatial and seasonal variation in macrozoobenthic density, biomass and community composition in a major tropical intertidal area, the Bijagós Archipelago, West-Africa. PLoS One 2022; 17:e0277861. [PMID: 36441788 PMCID: PMC9704600 DOI: 10.1371/journal.pone.0277861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 11/04/2022] [Indexed: 11/30/2022] Open
Abstract
The coastal intertidal ecosystem of the Bijagós Archipelago, Guinea-Bissau, one of the largest and most important in West Africa, sustains a considerable proportion of the migratory shorebird populations of the East Atlantic Flyway and operates as a nursery area for benthic fish in the region. The macrozoobenthos in these mudflats constitute the main food source for both groups so that spatial and temporal variation in their abundance and community composition is likely to influence the abundance and distribution of fish and birds. In this study we described the spatial and temporal dynamics in the density, biomass, and community composition of macrozoobenthos across six intertidal flats in three islands of the Bijagós Archipelago. Overall, the Bijagós Archipelago was characterised by a highly species-rich macrozoobenthic community, with ca. 88 taxa identified across all sites, reaching a mean density of 1871 ± 58.3 ind.m-2 (mean ± SE) and mean biomass of 5.65 ± 0.41 g of AFDM.m-2 (ash-free dry mass per m2), values much lower than what was described for nearby intertidal areas, namely the Band d'Arguin, Mauritania. Density and biomass of major macrozoobenthos classes (Bivalvia, Polychaeta, Malacostraca and Gastropoda) differed across sites and months, displaying an overall increase in density towards the final months of the dry season (March and April). Similarly, community composition also differed significantly between sites and throughout the season. The site with most distinct community composition (Adonga) supported low diversity and high abundance of a few bivalve species, whilst other two sites that hosted the most diverse communities, were also the most similar between them (Anrumai and Abu). These spatial and temporal patterns constitute an important baseline to improve knowledge of this intertidal ecosystem and will contribute towards a better understanding of the spatial and temporal distribution patterns of their consumers.
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Affiliation(s)
- Ana Pinto Coelho
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Aveiro, Portugal
- * E-mail:
| | - Mohamed Henriques
- Centre for Environmental and Marine Studies (CESAM), Department of Animal Biology, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
- Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Afonso Duarte Rocha
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Aveiro, Portugal
- Conservation Biology Research Group, Department of Anatomy, Cell Biology and Zoology, University of Extremadura, Badajoz, Spain
| | - João Paulino
- Centre for Environmental and Marine Studies (CESAM), Department of Animal Biology, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Loran Kleine Schaars
- Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Texel, The Netherlands
| | - Catarina Ramos
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Aveiro, Portugal
| | - Aissa Regalla de Barros
- Instituto da Biodiversidade e das Áreas Protegidas Dr. Alfredo Simão da Silva (IBAP), Bissau, Guiné-Bissau
| | - Teresa Catry
- Centre for Environmental and Marine Studies (CESAM), Department of Animal Biology, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - José Pedro Granadeiro
- Centre for Environmental and Marine Studies (CESAM), Department of Animal Biology, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Theunis Piersma
- Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
- Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Texel, The Netherlands
| | - José Augusto Alves
- Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Aveiro, Portugal
- South Iceland Research Centre, University of Iceland, Laugarvatn, Iceland
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6
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Environmental DNA metabarcoding reveals the biological community structure in Poyang Lake, China. CONSERV GENET RESOUR 2022. [DOI: 10.1007/s12686-022-01295-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Qiu X, Liu X, Lu Q, Chen J, Liang T, Wang W, Ouyang S, Zhou C, Wu X. Seasonal and spatial variability of zooplankton diversity in the Poyang Lake Basin using DNA metabarcoding. Ecol Evol 2022; 12:e8972. [PMID: 35784091 PMCID: PMC9168339 DOI: 10.1002/ece3.8972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/27/2022] [Accepted: 05/12/2022] [Indexed: 11/20/2022] Open
Abstract
Freshwater ecosystems face multiple threats to their stability globally. Poyang Lake is the largest lake in China, but its habitat has been seriously degraded because of human activities and natural factors (e.g. climate change), resulting in a decline in freshwater biodiversity. Zooplankton are useful indicators of environmental stressors because they are sensitive to external perturbations. DNA metabarcoding is an approach that has gained significant traction by aiding ecosystem conservation and management. Here, the seasonal and spatial variability in the zooplankton diversity were analyzed in the Poyang Lake Basin using DNA metabarcoding. The results showed that the community structure of zooplankton exhibited significant seasonal and spatial variability using DNA metabarcoding, where the community structure was correlated with turbidity, water temperature, pH, total phosphorus, and chlorophyll‐a. These results indicated habitat variations affected by human activities and seasonal change could be the main driving factors for the variations of zooplankton community. This study also provides an important reference for the management of aquatic ecosystem health and conservation of aquatic biodiversity.
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Affiliation(s)
- Xuemei Qiu
- School of Life Sciences Nanchang University Nanchang China
- School of Life Sciences Jiangxi Science and Technology Normal University Nanchang China
| | - Xiongjun Liu
- Guangdong Provincial Key Laboratory of Conservation and Precision Utilization of Characteristic Agricultural Resources in Mountainous Areas School of Life Science Jiaying University Meizhou China
| | - Quanfeng Lu
- School of Life Sciences Nanchang University Nanchang China
| | - Jinping Chen
- School of Life Sciences Nanchang University Nanchang China
| | - Tao Liang
- School of Life Sciences Nanchang University Nanchang China
| | - Weikai Wang
- School of Life Sciences Nanchang University Nanchang China
| | - Shan Ouyang
- School of Life Sciences Nanchang University Nanchang China
| | - Chunhua Zhou
- School of Life Sciences Nanchang University Nanchang China
| | - Xiaoping Wu
- School of Life Sciences Nanchang University Nanchang China
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Huang X, Yan C, Nie M, Chen J, Ding M. Effect of colloidal fluorescence properties on the complexation of chloramphenicol and carbamazepine to the natural aquatic colloids. CHEMOSPHERE 2022; 286:131604. [PMID: 34303905 DOI: 10.1016/j.chemosphere.2021.131604] [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: 03/16/2021] [Revised: 07/06/2021] [Accepted: 07/17/2021] [Indexed: 06/13/2023]
Abstract
The complexation mechanism between pharmaceuticals and natural colloids is still uncertain due to the complexity, heterogeneity, and polydispersity of colloids. Therefore, this study investigated the effect of fluorescence properties on the complexation of chloramphenicol (CAP) and carbamazepine (CBZ) to the colloids from Poyang Lake Basin based on the multiple spectroscopic techniques and methods. Three-dimensional excitation-emission matrix fluorescence spectroscopy-parallel factor analysis results illustrated that two humic-like components and two protein-like components of colloids from the rivers and lakes were identified, with the much higher fluorescence intensity of the protein-like substance observed in lake samples. The protein-like substance decreased dramatically with the addition of CAP and CBZ, suggesting its higher binding capacity towards these drugs, especially for CBZ. In addition, the fluorescence quenching titration was proceeded to explore the binding mechanism between the colloids and the pharmaceuticals. Results of synchronous fluorescence spectra and two-dimensional correlation spectroscopy demonstrated that the fluorescence quenching effect occurred preferentially between the protein-like substances and the pharmaceuticals, with the stronger complexation for CBZ. Ryan-Weber model fitting results showed that the stability constant ranged from 4.02 to 5.04 with the higher binding capacity observed for the tryptophan-like substance. Combined, the fluorescence components in aquatic colloids could be significantly impacted the complexation of the pharmaceuticals. This study provides deep insights into the fate and pollution protection of pharmaceuticals.
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Affiliation(s)
- Xian Huang
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China
| | - Caixia Yan
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China.
| | - Minghua Nie
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China.
| | - Jie Chen
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China
| | - Mingjun Ding
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, 99 Ziyang Road, Nanchang, 330022, China
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9
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Lu Q, Liu X, Qiu X, Liang T, Chen J, Zhao S, Ouyang S, Jin B, Wu X. Changes and drivers of zooplankton diversity patterns in the middle reach of Yangtze River floodplain lakes, China. Ecol Evol 2021; 11:17885-17900. [PMID: 35003645 PMCID: PMC8717274 DOI: 10.1002/ece3.8353] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 10/20/2021] [Accepted: 10/29/2021] [Indexed: 11/09/2022] Open
Abstract
Anthropogenic habitat alteration interferes the natural aquatic habitats and the system's hydrodynamics in the Yangtze River floodplain lakes, resulting in a serious decline in freshwater biodiversity. Zooplankton communities possess major position in freshwater ecosystems, which play essential parts in maintaining biological balance of freshwater habitats. Knowledge of processes and mechanisms for affecting variations in abundance, biomass, and diversity of zooplankton is important for maintaining biological balance of freshwater ecosystems. Here, we analyzed that the temporal and spatial changes in the structure of zooplankton community and their temporal and spatial variations respond to changes in environmental factors in the middle reach of Yangtze River floodplain lakes. The results showed that zooplankton samples were classified into 128 species, and Rotifera was the most common taxa. Significant seasonal differences were found among the abundance and diversity of zooplankton. Similarly, we also found significant seasonal differences among the biomass of zooplankton functional groups. The spatial turnover component was the main contributor to the β diversity pattern, which indicated that study areas should establish habitat restoration areas to restore regional biodiversity. The NMDS plot showed that the structure of zooplankton community exhibited significant seasonal changes, where the community structure was correlated with pH, water temperature, water depth, salinity, total nitrogen, chlorophyll-a, and total phosphorus based on RDA. This study highlights that it is very important to ensure the floodplain ecosystem's original state of functionality for maintaining the regional diversity of the ecosystem as a whole.
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Affiliation(s)
- Quanfeng Lu
- School of Life SciencesNanchang UniversityNanchangChina
| | - Xiongjun Liu
- Guangdong Provincial Key Laboratory of Conservation and Precision Utilization of Characteristic Agricultural Resources in Mountainous AreasSchool of Life ScienceJiaying UniversityMeizhouChina
| | - Xuemei Qiu
- School of Life SciencesNanchang UniversityNanchangChina
| | - Tao Liang
- School of Life SciencesNanchang UniversityNanchangChina
| | - Jinping Chen
- School of Life SciencesNanchang UniversityNanchangChina
| | - Shuai Zhao
- School of Life SciencesNanchang UniversityNanchangChina
| | - Shan Ouyang
- School of Life SciencesNanchang UniversityNanchangChina
| | - Binsong Jin
- Jiangxi Province Key Laboratory of Watershed Ecosystem Change and BiodiversitySchool of Life SciencesNanchang UniversityNanchangChina
| | - Xiaoping Wu
- School of Life SciencesNanchang UniversityNanchangChina
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10
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Li W, Zhai D, Wang C, Gao X, Liu H, Cao W. Relationships Among Trophic Niche Width, Morphological Variation, and Genetic Diversity of Hemiculter leucisculus in China. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.691218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
According to the niche variation hypothesis (NVH), the populations with wider niches are phenotypically more variable than those with narrow niches. Giller expanded the NVH, suggesting that the niche width, morphological variation, and genetic diversity are all positively correlated. However, the hypothesis has been a subject of debate and discussion. In the present study, the NVH was tested by analyzing the relationships among trophic niche width, morphological variation, and genetic diversity of Hemiculter leucisculus, a widespread cyprinid fish. The fish samples were collected from six sites across Haihe, the Yellow, and the Yangtze River basins in China. The relationships among trophic niche width, morphological variation, and genetic diversity were analyzed using Pearson correlation at the inter-population level. Our analysis indicated that trophic niche width is significantly positively correlated with morphological variation, which corroborates the NVH. Morphological variation was significantly correlated to genetic diversity. However, no relationship was observed between trophic niche width and genetic diversity. We inferred that the dietary niche of H. leucisculus might change due to the plastic response toward environmental changes rather than due to the genetic variation. We also suggest that the effects of environment and heredity on the niche of the freshwater fish should be quantified separately in further studies.
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Dai L, Liu Y, Luo X. Integrating the MCR and DOI models to construct an ecological security network for the urban agglomeration around Poyang Lake, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 754:141868. [PMID: 33254915 DOI: 10.1016/j.scitotenv.2020.141868] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 08/05/2020] [Accepted: 08/19/2020] [Indexed: 06/12/2023]
Abstract
The development of urban agglomeration in aquatic areas is premised on ecological security. The construction of ecological security network is an effective measure to reduce ecological resistance and guarantee economic development. In this study, a comprehensive ecological security network (ESN) evaluation approach is developed by integrating the Minimum Cumulative Resistance (MCR) model and Duranton and Overman Index (DOI). Taking the urban agglomeration around Poyang Lake in 2015 as a case, the MCR model showed the ecological landscape pattern of discrete connection and large overall ecological resistance. The DOI model indicated that the industries of moderately polluted were global localization, while heavily polluted were small-scale localization and large-scale dispersion. Accordingly, the ESN consisting of 35 ecological sources, 34 ecological corridors, 57 artificial corridors, and 39 eco-economic strategic nodes can avoid the threat of industrial layout to the ecological landscape. The results of this study complemented the guidance of industrial agglomeration theory on the basis of "source-sink" theory. The dual evaluation approach of landscape ecology and economic agglomeration proposed in this study explores interdisciplinary data fusion of different scales, and also provides a reference for inter-municipal coordinated ecological management and restraining urban excessive expansion.
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Affiliation(s)
- Lu Dai
- School of Economics and Management, Nanchang University, Nanchang 330031, China
| | - Yaobin Liu
- School of Economics and Management, Nanchang University, Nanchang 330031, China.
| | - Xiaoyi Luo
- College of Science and Technology, Ningbo University, Ningbo 315211, China
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12
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Wang W, Liu X, Ferreira-Rodríguez N, Sun W, Wu Y, Ouyang S, Zhou C, Wu X. Demographic and genetic characterization of harvested Corbicula fluminea populations. PeerJ 2020; 8:e9657. [PMID: 32953257 PMCID: PMC7476495 DOI: 10.7717/peerj.9657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 07/14/2020] [Indexed: 12/05/2022] Open
Abstract
The freshwater clam Corbicula fluminea s.l. is an edible freshwater bivalve of economic value in Asia. The species has been particularly well studied in the invaded range. However, there is a lack of knowledge in its native range where it supports an increasing commercial harvest pressure. Among Asiatic countries, China accounts for 70% of known commercial harvest and aquaculture production. We aim to characterize here wild C. fluminea s.l populations exposed to commercial harvest pressure in Poyang Lake Basin. We found higher biomass, density and genetic diversity in lake populations compared to peripheral populations (i.e., lake tributaries). Given that lake habitats support more intense harvest pressure than peripheral habitats, we suggest that demographic and genetic differentiation among subpopulations may be influenced in some degree by different harvest pressure. In this regard, additional demographic and/or genetic changes related to increasing harvest pressure may place population at a higher risk of extirpation. Altogether, these results are especially relevant for maintaining populations at or above viable levels and must be considered in order to ensure the sustainability of the resource.
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Affiliation(s)
- Weikai Wang
- School of Life Sciences, Nanchang University, Nanchang, China
| | - Xiongjun Liu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, China
| | | | - Weiwei Sun
- School of Life Sciences, Nanchang University, Nanchang, China
| | - Yanli Wu
- School of Life Sciences, Nanchang University, Nanchang, China
| | - Shan Ouyang
- School of Life Sciences, Nanchang University, Nanchang, China
| | - Chunhua Zhou
- School of Life Sciences, Nanchang University, Nanchang, China
| | - Xiaoping Wu
- School of Life Sciences, Nanchang University, Nanchang, China.,Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, China
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13
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Liu X, Wu R, Lopes-Lima M, Xue T, Zhou Y, Li K, Xu Y, Qin J, Ouyang S, Wu X. Changes and drivers of freshwater mussel diversity patterns in the middle and lower Yangtze River Basin, China. Glob Ecol Conserv 2020. [DOI: 10.1016/j.gecco.2020.e00998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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14
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Sun W, Liu X, Wu R, Wang W, Wu Y, Ouyang S, Wu X. Declining freshwater mussel diversity in the middle and lower reaches of the Xin River Basin: Threat and conservation. Ecol Evol 2019; 9:14142-14153. [PMID: 31938509 PMCID: PMC6953653 DOI: 10.1002/ece3.5849] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/24/2019] [Accepted: 10/28/2019] [Indexed: 11/08/2022] Open
Abstract
Freshwater mussels provide important functions and services for aquatic ecosystems, but populations of many species have been extirpated. Information on biodiversity plays an important role in the conservation and management of freshwater mussels. The Xin River Basin is a biodiversity hotspot for freshwater mussels in China, with more than 43 species known, but populations of which are decreasing. Here, we quantify the diversity of freshwater mussels in the middle and lower reaches of the Xin River Basin and study the correlation of habitat characteristics and freshwater mussel diversity. Compared to the historical period, the number of species, density, and biomass of freshwater mussels decreased 33%, 83%, and 82% in the current period, respectively. Fifty two percent of recorded species were empty shells, and 14 native freshwater mussels were not found in the study area. Four species are currently listed as vulnerable species using IUCN criteria and their global status. The assemblage structure of freshwater mussels exhibits significant spatial differences, and there was a correlation with substrate and physicochemical parameters. The main tributary of the Xin River with higher freshwater mussel diversity should be established as one large protected area because the nestedness component was the main pattern of beta diversity. These results indicated freshwater mussel diversity was declining rapidly, which can help focus conservation effort for freshwater mussel biodiversity.
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Affiliation(s)
- Weiwei Sun
- School of Life SciencesNanchang UniversityNanchangChina
| | - Xiongjun Liu
- Key Laboratory of Poyang Lake Environment and Resource UtilizationSchool of Resource, Environmental and Chemical EngineeringMinistry of EducationNanchang UniversityNanchangChina
- School of Resources Environmental & Chemical EngineeringNanchang UniversityNanchangChina
| | - Ruiwen Wu
- School of Life SciencesNanchang UniversityNanchangChina
| | - Weikai Wang
- School of Life SciencesNanchang UniversityNanchangChina
| | - Yanli Wu
- School of Life SciencesNanchang UniversityNanchangChina
| | - Shan Ouyang
- School of Life SciencesNanchang UniversityNanchangChina
| | - Xiaoping Wu
- School of Life SciencesNanchang UniversityNanchangChina
- Key Laboratory of Poyang Lake Environment and Resource UtilizationSchool of Resource, Environmental and Chemical EngineeringMinistry of EducationNanchang UniversityNanchangChina
- School of Resources Environmental & Chemical EngineeringNanchang UniversityNanchangChina
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