Pub Date : 2023-08-02DOI: 10.1080/20442041.2023.2242081
M. Thayne, Benjamin M. Kraemer, Jorrit P. Mesman, D. Pierson, A. Laas, E. de Eyto, B. Ibelings, R. Adrian
{"title":"Lake surface water temperature and oxygen saturation resistance and resilience following extreme storms: Chlorophyll a shapes resistance toward storms","authors":"M. Thayne, Benjamin M. Kraemer, Jorrit P. Mesman, D. Pierson, A. Laas, E. de Eyto, B. Ibelings, R. Adrian","doi":"10.1080/20442041.2023.2242081","DOIUrl":"https://doi.org/10.1080/20442041.2023.2242081","url":null,"abstract":"","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42147541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-09DOI: 10.1080/20442041.2023.2218985
T. Mehner
{"title":"Diversity of researcher types and plurality of philosophical concepts in limnology – an essay","authors":"T. Mehner","doi":"10.1080/20442041.2023.2218985","DOIUrl":"https://doi.org/10.1080/20442041.2023.2218985","url":null,"abstract":"","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47558975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-31DOI: 10.1080/20442041.2023.2218983
Chi-Feng Chen, Yang-Ming Chen, Jen-Yang Lin
ABSTRACT Eutrophication in freshwater lakes and reservoirs is a key threat to aquatic ecosystems and water supply systems. In some lakes and reservoirs, waterbirds might be an important nutrient source. The effects of waterbirds on water quality have been studied in temperate regions, but few studies have been conducted in tropical or subtropical regions. This study is the first to demonstrate the effects of migratory birds and cormorants on an Asian subtropical lake, Yangming Lake, Kinmen Island, Taiwan. Water quality model tools were applied with field investigations. During the study period, rainfall was relatively low and water storage was very low, resulting in cormorants contributing a high percentage of the phosphorus (P) loads, ∼70% of the annual external nutrients. However, when simulating normal rainfall records, the simulated total P (TP) concentration decreased, and the waterbirds contributed 55% of the external nutrients. Without the birds, the TP concentration is expected to be <50 μg/L under normal water volume. This study showed that migratory waterbird roosting could bring excess nutrients to the lake and significantly affect the water quality during the migratory period. However, the status of the lake water volume might dilute or strengthen the impacts of waterbirds. The random and nonlinear effects of waterbird droppings can be regarded as nonpoint source pollution, and management strategies are suggested to reduce the transport of waterbird droppings to receiving waterbodies.
{"title":"Assessing the effects of migratory waterbird droppings on potential lake eutrophication using water quality models: A case study of Yangming Lake on Kinmen Island, Taiwan.","authors":"Chi-Feng Chen, Yang-Ming Chen, Jen-Yang Lin","doi":"10.1080/20442041.2023.2218983","DOIUrl":"https://doi.org/10.1080/20442041.2023.2218983","url":null,"abstract":"ABSTRACT Eutrophication in freshwater lakes and reservoirs is a key threat to aquatic ecosystems and water supply systems. In some lakes and reservoirs, waterbirds might be an important nutrient source. The effects of waterbirds on water quality have been studied in temperate regions, but few studies have been conducted in tropical or subtropical regions. This study is the first to demonstrate the effects of migratory birds and cormorants on an Asian subtropical lake, Yangming Lake, Kinmen Island, Taiwan. Water quality model tools were applied with field investigations. During the study period, rainfall was relatively low and water storage was very low, resulting in cormorants contributing a high percentage of the phosphorus (P) loads, ∼70% of the annual external nutrients. However, when simulating normal rainfall records, the simulated total P (TP) concentration decreased, and the waterbirds contributed 55% of the external nutrients. Without the birds, the TP concentration is expected to be <50 μg/L under normal water volume. This study showed that migratory waterbird roosting could bring excess nutrients to the lake and significantly affect the water quality during the migratory period. However, the status of the lake water volume might dilute or strengthen the impacts of waterbirds. The random and nonlinear effects of waterbird droppings can be regarded as nonpoint source pollution, and management strategies are suggested to reduce the transport of waterbird droppings to receiving waterbodies.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47475752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-17DOI: 10.1080/20442041.2023.2213629
S. Zhai, P. Huang, J. Marshall, Jaye S. Lobegeiger, R. Cramp, M. A. Parisi, C. Franklin, Andrea Prior, Kamilla Kurucz, M. Hipsey
ABSTRACT Dryland river waterholes provide critical habitat and serve as refugia for aquatic animals during droughts, but the quality of these waterholes can often be severely compromised by hypoxic conditions that can lead to mass fish kills and loss of biodiversity. To assist river management, we developed a waterhole-scale ecohydrology model representing thermal stratification and dissolved oxygen regimes during prolonged drought periods in northern Murray-Darling Basin dryland rivers in Queensland, Australia. Model development focused around 6 typical waterholes in these rivers that were shallow (<5 m deep), highly turbid, and stratified with low dissolved oxygen. The model simulations utilised regional climate corrected for local factors such as diurnal vegetation shading and wind sheltering and successfully reproduced the prolonged stratification and hypoxia measured during drought conditions. The simulations highlight the distinct local climate each waterhole experiences due to the combined effects of river morphology and canopy cover that provide various degrees of solar shading and wind sheltering. The model can serve as a tool to inform water management decisions and climate adaptation strategies. Example scenarios demonstrate that (1) even where the canopy shading effect was small (5% at one site), further loss of riparian vegetation could increase temperature by 2–4 °C in warmer months with prolonged stratification; and (2) under an example RCP 8.5 climate change scenario, water temperature is likely to increase 2–10 °C, and oxygen saturation will decrease by 10% to 20% in the middle layers for most of the no-flow period by 2080–2099.
{"title":"Modelling prolonged stratification and hypoxia in dryland river waterholes during drought conditions","authors":"S. Zhai, P. Huang, J. Marshall, Jaye S. Lobegeiger, R. Cramp, M. A. Parisi, C. Franklin, Andrea Prior, Kamilla Kurucz, M. Hipsey","doi":"10.1080/20442041.2023.2213629","DOIUrl":"https://doi.org/10.1080/20442041.2023.2213629","url":null,"abstract":"ABSTRACT Dryland river waterholes provide critical habitat and serve as refugia for aquatic animals during droughts, but the quality of these waterholes can often be severely compromised by hypoxic conditions that can lead to mass fish kills and loss of biodiversity. To assist river management, we developed a waterhole-scale ecohydrology model representing thermal stratification and dissolved oxygen regimes during prolonged drought periods in northern Murray-Darling Basin dryland rivers in Queensland, Australia. Model development focused around 6 typical waterholes in these rivers that were shallow (<5 m deep), highly turbid, and stratified with low dissolved oxygen. The model simulations utilised regional climate corrected for local factors such as diurnal vegetation shading and wind sheltering and successfully reproduced the prolonged stratification and hypoxia measured during drought conditions. The simulations highlight the distinct local climate each waterhole experiences due to the combined effects of river morphology and canopy cover that provide various degrees of solar shading and wind sheltering. The model can serve as a tool to inform water management decisions and climate adaptation strategies. Example scenarios demonstrate that (1) even where the canopy shading effect was small (5% at one site), further loss of riparian vegetation could increase temperature by 2–4 °C in warmer months with prolonged stratification; and (2) under an example RCP 8.5 climate change scenario, water temperature is likely to increase 2–10 °C, and oxygen saturation will decrease by 10% to 20% in the middle layers for most of the no-flow period by 2080–2099.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48956079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-12DOI: 10.1080/20442041.2023.2213630
H. Fu, Jingjing Guo, Yili Ge, Aiping Wu, Wei Li, Huanyao Liu, Guixiang Yuan, E. Jeppesen
ABSTRACT Biological communities exhibit multiple distribution patterns at the metacommunity scale, and assessing the major drivers of these patterns is a key issue in community ecology. Here we investigated how the environmental and geographic gradients shape the distribution patterns of macrophytes at the metacommunity level. We applied the framework of the elements of the metacommunity structure (EMS) to identify the distinct types of 48 macrophyte metacommunities in the Hengduan Mountain region (HDMR) of China. We then used a generalized linear model and model selection approaches to determine which variables contributed to the variations of EMS and linear discriminant function analysis to evaluate how well the tested variables predicted metacommunity patterns. We found wide variations in the 3 EMS (i.e., coherence, range turnover, and range boundary clumping): latitude and alpha diversity were most important in determining coherence; nestedness was mostly related to turnover; and sampling depth was significantly associated with boundary clumping. Seven metacommunity types were identified in HDMR, and most metacommunities best fitted the Gleasonian and Clementsian patterns as well as their quasi-structures. Notably, Gleasonian and Q-Gleasonian patterns as well as the other 3 patterns (i.e., Q-nested, evenly spaced, and nested) were for the first time detected for macrophytes. These metacommunity types were best discriminated by nestedness, altitude, and latitude. Our results provide strong evidence of the impact of geographic patterns on macrophyte metacommunities, with the Gleasonian patterns dominant at both ends of the latitude/altitude gradient and Clementsian patterns common near the central part of the gradient.
{"title":"Ecogeographic patterns of macrophyte metacommunities in the Hengduan Mountain Region","authors":"H. Fu, Jingjing Guo, Yili Ge, Aiping Wu, Wei Li, Huanyao Liu, Guixiang Yuan, E. Jeppesen","doi":"10.1080/20442041.2023.2213630","DOIUrl":"https://doi.org/10.1080/20442041.2023.2213630","url":null,"abstract":"ABSTRACT Biological communities exhibit multiple distribution patterns at the metacommunity scale, and assessing the major drivers of these patterns is a key issue in community ecology. Here we investigated how the environmental and geographic gradients shape the distribution patterns of macrophytes at the metacommunity level. We applied the framework of the elements of the metacommunity structure (EMS) to identify the distinct types of 48 macrophyte metacommunities in the Hengduan Mountain region (HDMR) of China. We then used a generalized linear model and model selection approaches to determine which variables contributed to the variations of EMS and linear discriminant function analysis to evaluate how well the tested variables predicted metacommunity patterns. We found wide variations in the 3 EMS (i.e., coherence, range turnover, and range boundary clumping): latitude and alpha diversity were most important in determining coherence; nestedness was mostly related to turnover; and sampling depth was significantly associated with boundary clumping. Seven metacommunity types were identified in HDMR, and most metacommunities best fitted the Gleasonian and Clementsian patterns as well as their quasi-structures. Notably, Gleasonian and Q-Gleasonian patterns as well as the other 3 patterns (i.e., Q-nested, evenly spaced, and nested) were for the first time detected for macrophytes. These metacommunity types were best discriminated by nestedness, altitude, and latitude. Our results provide strong evidence of the impact of geographic patterns on macrophyte metacommunities, with the Gleasonian patterns dominant at both ends of the latitude/altitude gradient and Clementsian patterns common near the central part of the gradient.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44230837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-20DOI: 10.1080/20442041.2023.2204050
M. Burford, Anusuya Willis, Man Xiao, M. Prentice, David P. Hamilton
{"title":"Understanding the relationship between nutrient availability and freshwater cyanobacterial growth and abundance","authors":"M. Burford, Anusuya Willis, Man Xiao, M. Prentice, David P. Hamilton","doi":"10.1080/20442041.2023.2204050","DOIUrl":"https://doi.org/10.1080/20442041.2023.2204050","url":null,"abstract":"","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44738550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-17DOI: 10.1080/20442041.2023.2203060
M. Søndergaard, Anders Nielsen, L. Johansson, T. Davidson
ABSTRACT Lakes that undergo temporary stratification in summer do not fit into the classic categorisation of polymictic or dimictic lakes, but how common are they and what are the effects of stratification on the development of anoxia? We used monthly and bimonthly (twice per month) temperature and oxygen profile data from 436 Danish lakes (area range 1–3954 ha, maximum depth range 1.3–45 m) and defined a stratification indicator based on the temperature difference between the upper and lower 2 m of the water column. The stratification indicator had values between −1.6 and 17.7 °C and was significantly and strongly related to lake maximum depth and significantly but less strongly related to lake area. The indicator was highly variable, especially in lakes with maximum depths between 4 and 10 m, where intermediate indicator values suggest one or several mixing events during summer. The dissolved oxygen concentration in summer at the bottom was often <1 mg/L, even when the difference between top and bottom temperature was as low as 0.5–1.0 °C. Temporarily stratifying lakes with frequent mixing events over the summer are probably common in temperate lowland areas but are easily overlooked in routine monitoring programs. Temporary stratification has pronounced implications for the oxygen concentrations and potentially also for the biota and interactions between sediment and water.
{"title":"Temporarily summer-stratified lakes are common: profile data from 436 lakes in lowland Denmark","authors":"M. Søndergaard, Anders Nielsen, L. Johansson, T. Davidson","doi":"10.1080/20442041.2023.2203060","DOIUrl":"https://doi.org/10.1080/20442041.2023.2203060","url":null,"abstract":"ABSTRACT Lakes that undergo temporary stratification in summer do not fit into the classic categorisation of polymictic or dimictic lakes, but how common are they and what are the effects of stratification on the development of anoxia? We used monthly and bimonthly (twice per month) temperature and oxygen profile data from 436 Danish lakes (area range 1–3954 ha, maximum depth range 1.3–45 m) and defined a stratification indicator based on the temperature difference between the upper and lower 2 m of the water column. The stratification indicator had values between −1.6 and 17.7 °C and was significantly and strongly related to lake maximum depth and significantly but less strongly related to lake area. The indicator was highly variable, especially in lakes with maximum depths between 4 and 10 m, where intermediate indicator values suggest one or several mixing events during summer. The dissolved oxygen concentration in summer at the bottom was often <1 mg/L, even when the difference between top and bottom temperature was as low as 0.5–1.0 °C. Temporarily stratifying lakes with frequent mixing events over the summer are probably common in temperate lowland areas but are easily overlooked in routine monitoring programs. Temporary stratification has pronounced implications for the oxygen concentrations and potentially also for the biota and interactions between sediment and water.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44802534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-12DOI: 10.1080/20442041.2023.2201395
Tiphaine Labed-Veydert, A. Bec, M. Danger, F. Perrière, C. Desvilettes
ABSTRACT Headwater streams are characterised by predominantly heterotrophic functioning resulting from leaf litter input, but autochthonous primary production can also contribute to energy fluxes and the supply of nutrients. While much work has focused on the role of polyunsaturated fatty acids as essential nutrients, less attention has been paid to the significance of sterols in stream food webs. Yet these molecules are essential to arthropods that can only synthesise cholesterol from a limited range of dietary sterols. In a headwater stream, we tracked the transfer of dominant sterols from allochthonous and autochthonous resources to 5 benthic macroinvertebrates. Despite their formal functional feeding group, all the taxa tended to be opportunistic omnivores that relied on all available resources. These behaviours could be attributed to nutritional constraints in the stream food web, but these constraints were not related to the sterol supply from the different basal sources. Dominant sterols from detrital sources (leaf litter, fine benthic organic matter [FBOM]) and primary producers (epilithic biofilms, bryophytes) were all Δ5-sterols (β-sitosterol, campesterol, stigmasterol, epibrassicasterol). The levels of cholesterol detected in macroinvertebrates, as well as the presence of desmosterol, indicate efficient dealkylation activity of these Δ5-sterols. Leaf litter has consistently shown high β-sitosterol/stigmasterol ratios, giving it greater nutritional value than usually accepted. But bryophytes, and especially epilithic biofilms, contained cholesterol, providing a direct supply to invertebrates, thereby promoting their growth. Detrital particles (FBOM) colonised by microalgae could be the best-balanced diet to avoid sterol deficiencies due to their cholesterol content and high β-sitosterol/stigmasterol ratios.
{"title":"Does sterol availability in a forested headwater stream constitute a nutritional constraint for macroinvertebrates?","authors":"Tiphaine Labed-Veydert, A. Bec, M. Danger, F. Perrière, C. Desvilettes","doi":"10.1080/20442041.2023.2201395","DOIUrl":"https://doi.org/10.1080/20442041.2023.2201395","url":null,"abstract":"ABSTRACT Headwater streams are characterised by predominantly heterotrophic functioning resulting from leaf litter input, but autochthonous primary production can also contribute to energy fluxes and the supply of nutrients. While much work has focused on the role of polyunsaturated fatty acids as essential nutrients, less attention has been paid to the significance of sterols in stream food webs. Yet these molecules are essential to arthropods that can only synthesise cholesterol from a limited range of dietary sterols. In a headwater stream, we tracked the transfer of dominant sterols from allochthonous and autochthonous resources to 5 benthic macroinvertebrates. Despite their formal functional feeding group, all the taxa tended to be opportunistic omnivores that relied on all available resources. These behaviours could be attributed to nutritional constraints in the stream food web, but these constraints were not related to the sterol supply from the different basal sources. Dominant sterols from detrital sources (leaf litter, fine benthic organic matter [FBOM]) and primary producers (epilithic biofilms, bryophytes) were all Δ5-sterols (β-sitosterol, campesterol, stigmasterol, epibrassicasterol). The levels of cholesterol detected in macroinvertebrates, as well as the presence of desmosterol, indicate efficient dealkylation activity of these Δ5-sterols. Leaf litter has consistently shown high β-sitosterol/stigmasterol ratios, giving it greater nutritional value than usually accepted. But bryophytes, and especially epilithic biofilms, contained cholesterol, providing a direct supply to invertebrates, thereby promoting their growth. Detrital particles (FBOM) colonised by microalgae could be the best-balanced diet to avoid sterol deficiencies due to their cholesterol content and high β-sitosterol/stigmasterol ratios.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44448443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-12DOI: 10.1080/20442041.2023.2201397
Yang Yang, Chen Chen, Tao Xu
ABSTRACT Plateau reservoirs are considered vulnerable and sensitive to eutrophication under global warming and land use changes. We investigated the structure, diversity, and gene functions of bacterial communities in 3 reservoirs in Yun-Gui Plateau. We assumed the bacterial community structures were different among these 3 plateau reservoirs because of differences in trophic status. We found an insignificant difference in bacterial community structure among the reservoirs but a varying relative abundance of components in the community. Proteobacteria and Cyanobacteria were the most abundant phyla. Alpha diversity, as indicated by Simpson, Shannon, and evenness indexes, were similar in the 3 reservoirs, but richness was different. Hongfeng Reservoir exhibited the lowest heterogeneity, as indicated by the beta diversity. Analysis of gene functions suggested that amino acid metabolism and membrane transport were important and reflected the multiple roles of bacteria in biogeochemical processes. This study provided information about the bacterial community structure in reservoirs of Yun-Gui Plateau and analysis of the effects of environmental factors. Bacterial communities show little variation among reservoirs due to exposure to similar environmental conditions, and differences in trophic status were not a strong driver of community structure changes.
{"title":"Structure and diversity of bacterial communities in the water column of three reservoirs in Yun-Gui Plateau, China","authors":"Yang Yang, Chen Chen, Tao Xu","doi":"10.1080/20442041.2023.2201397","DOIUrl":"https://doi.org/10.1080/20442041.2023.2201397","url":null,"abstract":"ABSTRACT Plateau reservoirs are considered vulnerable and sensitive to eutrophication under global warming and land use changes. We investigated the structure, diversity, and gene functions of bacterial communities in 3 reservoirs in Yun-Gui Plateau. We assumed the bacterial community structures were different among these 3 plateau reservoirs because of differences in trophic status. We found an insignificant difference in bacterial community structure among the reservoirs but a varying relative abundance of components in the community. Proteobacteria and Cyanobacteria were the most abundant phyla. Alpha diversity, as indicated by Simpson, Shannon, and evenness indexes, were similar in the 3 reservoirs, but richness was different. Hongfeng Reservoir exhibited the lowest heterogeneity, as indicated by the beta diversity. Analysis of gene functions suggested that amino acid metabolism and membrane transport were important and reflected the multiple roles of bacteria in biogeochemical processes. This study provided information about the bacterial community structure in reservoirs of Yun-Gui Plateau and analysis of the effects of environmental factors. Bacterial communities show little variation among reservoirs due to exposure to similar environmental conditions, and differences in trophic status were not a strong driver of community structure changes.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47427240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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