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Xie C, Hu C, Yang W, Wu N, Liu Q, Wei J, Wang C. Phytoplankton species composition as bioindicator in the largest fragmented channel of the Pearl River, China. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:389. [PMID: 38512521 DOI: 10.1007/s10661-024-12551-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: 11/20/2023] [Accepted: 03/16/2024] [Indexed: 03/23/2024]
Abstract
To test the serial discontinuity concept (SDC) predictions in a regulated river ecosystem, environmental parameters and phytoplankton community structure were determined in a subtropical river (China) which was regulated by 11 cascade dams. Our results showed that total phosphorus (TP) and silicate during the wet period in several dams supported the SDC predictions. Variations of phytoplankton species composition in several cascade dams, such as Datengxia (DTX) and Changzhou (CZ), also supported the SDC predictions. Moreover, the stations near the dams showed the maximum or minimum values of total species numbers in each cascade segment. Predictive model indicated that the types of phytoplankton decreased in the middle reaches, conforming to SDC predictions. In the whole system of cascading dams, an increase in silicate concentration and phytoplankton communities in the downstream was also consistent with SDC predictions. Therefore, these findings aligned with the SDC predictions in the aspects of both single dam and whole cascade dam system to some extent. In future research, our aim is to further investigate the effects of cascade damming on additional phytoplankton-related indices in this aquatic ecosystem. We hope to gather more comprehensive data to fully validate the SDC predictions.
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Affiliation(s)
- Changxin Xie
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, Guangdong, People's Republic of China
- Tianjin Key Lab of Aqua-Ecology and Aquaculture, Tianjin Agricultural University, Tianjin, 300384, People's Republic of China
| | - Caiqin Hu
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, Guangdong, People's Republic of China
- Fishery Ecological Environment Monitoring Center of Pearl River Basin, Ministry of Agriculture and Rural Affairs, Guangzhou, 510380, People's Republic of China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, 510380, People's Republic of China
| | - Wanling Yang
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, Guangdong, People's Republic of China
- Fishery Ecological Environment Monitoring Center of Pearl River Basin, Ministry of Agriculture and Rural Affairs, Guangzhou, 510380, People's Republic of China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, 510380, People's Republic of China
- Guangdong Provincial Key Laboratory of Aquatic Animal Immunology and Sustainable Aquaculture, Guangzhou, 510380, People's Republic of China
| | - Naicheng Wu
- Department of Geography and Spatial Information Techniques, Ningbo University, Ningbo, 315211, People's Republic of China
| | - Qianfu Liu
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, Guangdong, People's Republic of China
- Fishery Ecological Environment Monitoring Center of Pearl River Basin, Ministry of Agriculture and Rural Affairs, Guangzhou, 510380, People's Republic of China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, 510380, People's Republic of China
- Guangdong Provincial Key Laboratory of Aquatic Animal Immunology and Sustainable Aquaculture, Guangzhou, 510380, People's Republic of China
| | - Jingxin Wei
- College of Life Science and Technology, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Chao Wang
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, Guangdong, People's Republic of China.
- Fishery Ecological Environment Monitoring Center of Pearl River Basin, Ministry of Agriculture and Rural Affairs, Guangzhou, 510380, People's Republic of China.
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, 510380, People's Republic of China.
- Guangdong Provincial Key Laboratory of Aquatic Animal Immunology and Sustainable Aquaculture, Guangzhou, 510380, People's Republic of China.
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Arantes CC, Laufer J, Mayer A, Moran EF, Sant' Anna IRA, Dutka-Gianelli J, Lopez MC, Doria CRC. Large-scale hydropower impacts and adaptation strategies on rural communities in the Amazonian floodplain of the Madeira River. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 336:117240. [PMID: 36870321 DOI: 10.1016/j.jenvman.2023.117240] [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: 09/12/2022] [Revised: 12/07/2022] [Accepted: 01/04/2023] [Indexed: 06/18/2023]
Abstract
Understanding social and environmental impacts and household adaptation strategies in the face of expansions in energy infrastructure projects is essential to inform mitigation and interventions programs that promote well-being. Here we conducted surveys in seven communities distributed across varying degrees of proximity to a hydropower dam complex in the Brazilian Amazon along about 250 km of the floodplain of the Madeira River. Based on interviews with 154 fishers from these communities, we examine how fishers perceived changes in fisheries yields, changes in the composition of fish species, and whether and how adaptation strategies had evolved 8-9 years after the dams' construction. Most respondents (91%) indicated declines in yields after the dams for both upstream and downstream zones. Multivariate analyses revealed statistically significant differences in the composition of species yields in pre-and post-dam periods for all communities and in both upstream and downstream zones (p < 0.001). The composition of yields diversified after the dams, with an apparent decline in yields of species of greatest market value (e.g., catfishes Brachyplatystoma spp., Pseudoplatystoma spp., and jatuarana Brycon spp.), and increases in yields of a set of other smaller bodied and faster growing species (e.g., 'branquinhas' Psectrogaster spp., Potamohinna spp., and sardines Triportheus spp.). Both downstream and upstream fishers indicated that fishing profits decreased since the dams' construction (76.8% and 67.9%, respectively). To cope with these changes, the majority of both upstream and downstream fishers (>70%) stated they have had to devote more time to fishing after the dams were built. The time fishers spend traveling to fishing locations also increased for upstream communities (77.1%), but not for downstream communities. Thirty-four percent of the interviewees changed the gear they use to fish after the dams construction, with twice as many mentioning uses of non-selective gear, such as gillnets, and declining use of traditional fishing gears such as castnets and a trap ("covi"). Fish consumption overall decreased: fish was consumed 'everyday' before the dams, but 1-2 times per week or rarely after the dams were built. Although the species that declined were those of high economic value, 53% of fishers stated fish prices have increased overall after the dams. These results shed light on the potential challenges faced by fishers and which adaptation strategies they have evolved to maintain livelihoods since the construction of the dams.
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Affiliation(s)
- Caroline C Arantes
- Division of Forestry and Natural Resources, West Virginia University, WV, USA; Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI, USA.
| | - Juliana Laufer
- Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI, USA; Ichthyology and Fisheries Laboratory, Department of Biology, Federal University of Rondônia, RO, Brazil
| | - Adam Mayer
- Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI, USA
| | - Emilio F Moran
- Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI, USA
| | - Igor R A Sant' Anna
- Programa de Pós-graduação em Desenvolvimento Regional e Meio Ambiente, Federal University of Rondônia, RO, Brazil; Ichthyology and Fisheries Laboratory, Department of Biology, Federal University of Rondônia, RO, Brazil
| | | | - Maria Claudia Lopez
- Department of Community Sustainability, Michigan State University, East Lansing, MI, USA
| | - Carolina R C Doria
- Programa de Pós-graduação em Desenvolvimento Regional e Meio Ambiente, Federal University of Rondônia, RO, Brazil; Ichthyology and Fisheries Laboratory, Department of Biology, Federal University of Rondônia, RO, Brazil
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Feng L, Hu P. Changing temporal and spatial patterns of methane emission from rivers by reservoir dams: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27716-5. [PMID: 37219780 DOI: 10.1007/s11356-023-27716-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 05/13/2023] [Indexed: 05/24/2023]
Abstract
Dams built on rivers can bring economic benefits to local production and are considered to be environmentally friendly. However, in recent years, many researchers found that the establishment of dams has created excellent conditions for the production of methane (CH4) in rivers, making it change from a "weak source" of rivers to a "strong source" of dams. In particular, reservoir dams have a great impact on CH4 emission in rivers within their regions in terms of time and space. Spatially, the sedimentary layer and water level fluctuation zone of reservoirs are the main direct and indirect causes of CH4 production. Temporally, the synergetic effect between water level adjustment of the reservoir dam and environmental factors leads to large changes in the substances of the water body, impacts on the production and transport of CH4. Finally, the generated CH4 is emitted into the atmosphere through several important emission modes: molecular diffusion, bubbling, and degassing. The contribution of CH4 emitted from reservoir dams to the global greenhouse effect cannot be ignored.
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Affiliation(s)
- Lan Feng
- College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China.
- Ecological Complexity and Modeling Laboratory, Department of Botany and Plant Sciences, University of California, Riverside, CA, 92521, USA.
- College of Environment and Biology, Nanjing Forestry University, Nanjing, 210037, China.
| | - Pan Hu
- College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
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Zhang Y, Su Y, Li Z, Guo S, Lu L, Zhang B, Qin Y. Terrigenous organic carbon drives methane dynamics in cascade reservoirs in the upper Yangtze China. WATER RESEARCH 2022; 219:118546. [PMID: 35561621 DOI: 10.1016/j.watres.2022.118546] [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: 02/18/2022] [Revised: 04/20/2022] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
Methane (CH4) emissions from freshwaters to the atmosphere have a profound impact on global atmospheric greenhouse gas (GHG) concentrations. Anthropogenic footprints such as dam construction and reservoir operation significantly changed the fate and transport of CH4 in freshwaters. The source of particulate organic carbon (POC) in reservoirs is a critical factor controlling CH4 production and emissions. However, little is known of how reservoir operation mediates the transport of POC and regulates CH4 accumulation in cascade hydroelectric reservoirs. Here, spatial and temporal variations in POC and CH4 were explored in the Xiluodu (XLD) and Xiangjiaba (XJB) reservoirs which are deep valley cascade reservoirs located in the main channel of the upper Yangtze River. Based on the δ13C-POC and N/C mole ratio of particulate organic matter, the results of multi-endmember stable isotope mixing models by a Bayesian model showed that terrigenous POC and autochthonous POC accounted for approximately 55% ± 18% and 43% ± 19% (SD, n = 179) of POC, respectively. Together with other hydrological and environmental parameters, we found that the input of terrigenous POC was dominantly influenced by water level variations and flow regulation due to reservoir operation. The cumulative effect of POC caused by cascade dams was not apparent. Terrigenous POC were more likely to drive CH4 accumulation in our study. Evident low level of CH4 in both reservoirs were likely affected by low sedimentation of POC and microbial CH4 oxidation. We hope our study could provide a conceptual framework for further modeling of CH4 dynamics in cascade reservoirs.
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Affiliation(s)
- Yuanyuan Zhang
- College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China; CAS Key Lab of Reservoir Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
| | - Youheng Su
- CAS Key Lab of Reservoir Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; College of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
| | - Zhe Li
- College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China; CAS Key Lab of Reservoir Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China.
| | - Shuhui Guo
- Foreign Environmental Cooperation Center, Ministry of Ecology and Environment of the People's Republic of China, Beijing, 100035, China
| | - Lunhui Lu
- College of Resources and Environment, Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China; CAS Key Lab of Reservoir Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
| | - Bin Zhang
- CAS Key Lab of Reservoir Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
| | - Yu Qin
- College of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China
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Arantes CC, Laufer J, Pinto MDDS, Moran E, Lopez MC, Dutka‐Gianelli J, Pinto D, Chaudhari S, Pokhrel Y, Doria C. Functional responses of fisheries to hydropower dams in the Amazonian Floodplain of the Madeira River. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.14082] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Caroline C. Arantes
- Division of Forestry and Natural Resources West Virginia University Morgantown WV USA
- Center for Global Change and Earth Observations Michigan State University East Lansing MI USA
| | - Juliana Laufer
- Center for Global Change and Earth Observations Michigan State University East Lansing MI USA
| | - Mac David da Silva Pinto
- Biology Department Federal University of Tocantins Palmas Brazil
- Programa de Pós‐graduação da Rede de Biodiversidade e Biotecnologia da Amazônia Legal (Bionorte), and Ichthyology and Fisheries Laboratory of the Federal University of Rondonia Federal University of Rondônia Porto Velho Brazil
| | - Emilio F. Moran
- Center for Global Change and Earth Observations Michigan State University East Lansing MI USA
| | - Maria Claudia Lopez
- Department of Community Sustainability Michigan State University East Lansing MI USA
| | | | - Danielle Mendonça Pinto
- Programa de Pós‐graduação da Rede de Biodiversidade e Biotecnologia da Amazônia Legal (Bionorte), and Ichthyology and Fisheries Laboratory of the Federal University of Rondonia Federal University of Rondônia Porto Velho Brazil
| | - Suyog Chaudhari
- Department of Civil and Environmental Engineering Michigan State University East Lansing MI USA
| | - Yadu Pokhrel
- Department of Civil and Environmental Engineering Michigan State University East Lansing MI USA
| | - Carolina R. C. Doria
- Programa de Pós‐graduação da Rede de Biodiversidade e Biotecnologia da Amazônia Legal (Bionorte), and Ichthyology and Fisheries Laboratory of the Federal University of Rondonia Federal University of Rondônia Porto Velho Brazil
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Evolution of Flood Regulation Capacity for a Large Shallow Retention Lake: Characterization, Mechanism, and Impacts. WATER 2020. [DOI: 10.3390/w12102853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The retention lake often plays an important role in flood mitigation through the water storage and the lake–river interactions. However, the evolution of real-time flood regulation capacity remains poorly characterized. Using wavelet decomposition and flood peak removing ratios, this study presents a comprehensive evaluation of the characterization, mechanism, and impacts of the flood regulation capacity in Dongting Lake. The results indicate that the change of flood regulation effect of the lake can be well reflected by the multi-year changes in the variances of the inflow and outflow runoffs. The wavelet decomposition indicates that the flood regulation of the lake is mainly functioned on the high-frequency floods with durations less than 32 days. The average yearly flood peak removing ratios range from 0.13 to 0.56, but no significant tendency changes on the effect of the flood regulation capacity has happened during the study period. The changes in maximum regulation volume reveal that the flood regulation of the Dongting Lake is mainly a passive process decided by the complex river–lake relationship and the interactions among different processes of discharge and sediment. The impacts from the large volume reduction caused by sedimentation in the lake is compensated by the increased flood controlling water level, which in turn have resulted in the new phenomenon of “normal discharge, high water level and disaster” in the lake regions after the 1990s. The significant impacts on the lake–river relationship caused by the sediment reallocation from the operation of the Three Gorges Reservoir (TGR) have further changed the hydrological regimes between the lake and the Yangtze River. Influenced by the new lake-river interaction pattern the discharge passing capacity downstream the outlet of the lake is becoming a key factor that affects the flood regulation capacity, which is leading to a shift of the flood pressures from the lake region to the downstream of Yangtze in the near future.
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Bastos WR, Dórea JG, Lacerda LD, Almeida R, Costa-Junior WA, Baía CC, Sousa-Filho IF, Sousa EA, Oliveira IAS, Cabral CS, Manzatto AG, Carvalho DP, Ribeiro KAN, Malm O. Dynamics of Hg and MeHg in the Madeira River basin (Western Amazon) before and after impoundment of a run-of-river hydroelectric dam. ENVIRONMENTAL RESEARCH 2020; 189:109896. [PMID: 32979999 DOI: 10.1016/j.envres.2020.109896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/24/2020] [Accepted: 06/29/2020] [Indexed: 06/11/2023]
Abstract
The impact of a hydroelectric run-of-river (RoR) dam construction on the dynamics of total mercury (THg) and methylmercury (MeHg) is of interest to the environment and health of human and wild life. We monitored (May 2010 to October 2018) THg and MeHg in the waters and in the suspended particulate matter (SPM) of the Madeira River and its tributaries (before and after dam construction) to evaluate changes upstream and downstream from the Santo Antonio Hydroelectric Dam (SAHD). We collected 2826 samples of water and SPM at sampling stations upstream (UPMD-01, UPMD-02 and UPMD-03) and downstream the Madeira River (DWMD-04, DWMD-05 and DWMD-06), and Tributaries upstream (Branco River, Jaci-Parana River, Jatuarana-I Igarapé, Contra River, Caripunas Igarapé, Ceara Igarapé, and Teotonio Igarapé) and downstream (Jatuarana-II Igarapé and Belmont Igarapé) from the SAHD and monitored water and the total load of SPM. SPM was significantly higher in the Madeira River (median: 178.63 mg.L-1) than in upstream and downstream tributaries (median: 15.30 mg.L-1); however, the THg and MeHg concentrations were significantly higher in the tributaries (median: 161.14 ng g-1 and 9.03 ng g-1, respectively) than in the mainstream Madeira River (median = 57.06 ng g-1 and 1.63 ng g-1, respectively). THg concentration in the water was significantly higher in the mainstream Madeira River (median = 6.51 ng.L-1) than in the tributaries (median = 2.57 ng.L-1). However, the percentage of methylation in the tributaries (median = 4.9%) was 4-times higher than in the Madeira River (median: 1.3%). The significantly higher MeHg percentages in the tributaries may indicate natural (hydro-bio-geochemical factors) still predominant in this changing landscape of the Western Amazon. So far, the data suggest that this RoR has not yet impacted the THg and MeHg concentrations.
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Affiliation(s)
- Wanderley R Bastos
- Laboratório de Biogeoquímica Ambiental WCP, Fundação Universidade Federal de Rondônia, Brazil.
| | - José G Dórea
- Faculdade de Ciências da Saúde, Universidade de Brasília, Brazil
| | - Luiz D Lacerda
- Instituto de Ciências Do Mar, Universidade Federal Do Ceará, Brazil
| | - Ronaldo Almeida
- Laboratório de Biogeoquímica Ambiental WCP, Fundação Universidade Federal de Rondônia, Brazil; Departamento de Ciências Sociais e Ambientais, Fundação Universidade Federal de Rondônia, Brazil
| | | | - Célia C Baía
- Laboratório de Biogeoquímica Ambiental WCP, Fundação Universidade Federal de Rondônia, Brazil
| | - Izidro F Sousa-Filho
- Laboratório de Biogeoquímica Ambiental WCP, Fundação Universidade Federal de Rondônia, Brazil; Instituto de Biofísica Carlos Chagas Filho, Universidade Federal Do Rio de Janeiro, Brazil
| | - Eduardo A Sousa
- Laboratório de Biogeoquímica Ambiental WCP, Fundação Universidade Federal de Rondônia, Brazil
| | | | - Cássio S Cabral
- Laboratório de Biogeoquímica Ambiental WCP, Fundação Universidade Federal de Rondônia, Brazil
| | - Angelo G Manzatto
- Laboratório de Biogeoquímica Ambiental WCP, Fundação Universidade Federal de Rondônia, Brazil
| | - Dario P Carvalho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal Do Rio de Janeiro, Brazil; Santo Antônio Energia, Porto Velho, RO, Brazil
| | | | - Olaf Malm
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal Do Rio de Janeiro, Brazil
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