Pub Date : 2023-10-16DOI: 10.1080/20442041.2023.2271307
Willem Kaijser, Daniel Hering, Jochem Kail
Abstract:Phototrophic organisms in lakes change from macrophyte to phytoplankton dominated states along trophic gradients. Before lakes reach a turbid and phytoplankton dominated state, shifts from meadow-forming Characeae to canopy-forming macrophyte species can occur, where Characea are present (i.e. especially in oligo to mesotrophic lakes with sand or gravel substrate). However, eutrophication intensity causing this shift has not yet been estimated.We analysed data from 132 lakes located in Mecklenburg-Vorpommern (Germany). With a Generalized Linear Model (GLM) and Random Forest (RF) models complemented with grid approximation, we analysed (i) if species richness of macrophytes declines along eutrophication gradients, (ii) above which chlorophyll-a concentrations the abundance of Characeae declines, and (iii) above which chlorophyll-a concentrations the abundance canopy-forming species declines.The number of macrophyte taxa declined gradually following a log-linear trend and with increasing chlorophyll-a concentrations. Based on the RF models, the abundance of Characeae already decreased at 5-13 µg L-1 chlorophyll-a, whereas canopy-forming species showed a monotonous and slight unimodal response decreasing at 35-103 µg L-1 chlorophyll-a.The results support the theory of shifts in growth forms along eutrophication gradients in lakes and provides, for the first time, estimations of chlorophyll-a concentrations required for these shifts. Changes in growth forms are obvious indicators for eutrophication and can serve as an additional incentive to improve lake trophic status.Keywords: aquatic plantscanopy forming macrophytesCharaceaechlorophyll-aDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. AcknowledgementsWe would like to thank the Ministry of Agriculture and the Environment of the federal state of Mecklenburg-Vorpommern for kindly providing the macrophyte and water quality data of the lakes in Mecklenburg-Vorpommern. This study was partly conducted within the AQUATAG project, funded by the German Federal Ministry of Education and Research, grant number 033W046C. Willem Kaijser and Daniel Hering were partly supported by the Collaborative Research Centre 1439 RESIST (Multilevel Response to Stressor Increase and Decrease in Stream Ecosystems; www.sfb-resist.de) funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation; CRC 1439/1, project number: 426547801). The authors declare no conflict of interests.Data availability statementData are available from the respective authority upon reasonable request.
{"title":"Macrophyte growth forms shift along the trophic gradient of lakes","authors":"Willem Kaijser, Daniel Hering, Jochem Kail","doi":"10.1080/20442041.2023.2271307","DOIUrl":"https://doi.org/10.1080/20442041.2023.2271307","url":null,"abstract":"Abstract:Phototrophic organisms in lakes change from macrophyte to phytoplankton dominated states along trophic gradients. Before lakes reach a turbid and phytoplankton dominated state, shifts from meadow-forming Characeae to canopy-forming macrophyte species can occur, where Characea are present (i.e. especially in oligo to mesotrophic lakes with sand or gravel substrate). However, eutrophication intensity causing this shift has not yet been estimated.We analysed data from 132 lakes located in Mecklenburg-Vorpommern (Germany). With a Generalized Linear Model (GLM) and Random Forest (RF) models complemented with grid approximation, we analysed (i) if species richness of macrophytes declines along eutrophication gradients, (ii) above which chlorophyll-a concentrations the abundance of Characeae declines, and (iii) above which chlorophyll-a concentrations the abundance canopy-forming species declines.The number of macrophyte taxa declined gradually following a log-linear trend and with increasing chlorophyll-a concentrations. Based on the RF models, the abundance of Characeae already decreased at 5-13 µg L-1 chlorophyll-a, whereas canopy-forming species showed a monotonous and slight unimodal response decreasing at 35-103 µg L-1 chlorophyll-a.The results support the theory of shifts in growth forms along eutrophication gradients in lakes and provides, for the first time, estimations of chlorophyll-a concentrations required for these shifts. Changes in growth forms are obvious indicators for eutrophication and can serve as an additional incentive to improve lake trophic status.Keywords: aquatic plantscanopy forming macrophytesCharaceaechlorophyll-aDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. AcknowledgementsWe would like to thank the Ministry of Agriculture and the Environment of the federal state of Mecklenburg-Vorpommern for kindly providing the macrophyte and water quality data of the lakes in Mecklenburg-Vorpommern. This study was partly conducted within the AQUATAG project, funded by the German Federal Ministry of Education and Research, grant number 033W046C. Willem Kaijser and Daniel Hering were partly supported by the Collaborative Research Centre 1439 RESIST (Multilevel Response to Stressor Increase and Decrease in Stream Ecosystems; www.sfb-resist.de) funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation; CRC 1439/1, project number: 426547801). The authors declare no conflict of interests.Data availability statementData are available from the respective authority upon reasonable request.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136079389","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 : 2023-10-11DOI: 10.1080/20442041.2023.2265799
John R. Jones, Kimberly Pope-Cole, Daniel V. Obrecht, J.D. Harlan, Lesley B. Knoll, John A. Downing
AbstractThe rate of sequestration of carbon, nitrogen and phosphorus by lentic ecosystems informs both the global carbon budget and the remediation of eutrophication. Here we estimate carbon, nitrogen and phosphorus burial in sediments of 34 lakes in Missouri, USA, and compare them to those found in other agricultural areas as well as to global estimates. Mean sediment accumulation rates varied by orders of magnitude among study regions, with the largest values (average 6 cm y-1) in impounded systems surrounded by intensive agriculture. Rates increased with the drainage ratio and decreased with the abundance of other surface water in the catchment (e.g., farm ponds). Average organic carbon burial differed by an order of magnitude among study regions (average 150-2100 g m-2 y-1) with differences related to the drainage ratio and eutrophication. Organic carbon burial was strongly correlated with burial rates of nitrogen and phosphorus. Comparisons with a diversity of global data show that many Midwestern USA impoundments have extremely high rates of biogeochemical burial likely due to the details of agricultural cropping systems, landscape configuration, and soil characteristics.Keywords: carbonlakesnitrogenphosphorussedimentsequestrationDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. AcknowledgementsFunding for the Missouri data was provided by the Missouri Department of Natural Resources and Missouri Agricultural Experiment Station and Food & Agriculture Research Institute. Specific appreciation is extended to Anthony Thorpe and Carol Pollard.
摘要生态系统对碳、氮、磷的固存速率反映了全球碳收支和富营养化的修复。在这里,我们估计了美国密苏里州34个湖泊沉积物中碳、氮和磷的埋藏,并将它们与其他农业区以及全球估计值进行了比较。在研究区域之间,平均泥沙积累速率有数量级的差异,在集约化农业包围的蓄水系统中,其值最大(平均为6 cm -1)。发病率随排水比的增加而增加,随集水区其他地表水(如农场池塘)的丰富而减少。各研究区平均有机碳埋深存在一个数量级差异(平均150 ~ 2100 g m-2 y-1),差异与排水比和富营养化有关。有机碳埋深与氮、磷埋深呈正相关。与全球数据多样性的比较表明,美国中西部的许多水库具有极高的生物地球化学埋藏率,这可能是由于农业种植系统、景观配置和土壤特征的细节。关键词:碳湖氮磷沉积封存免责声明作为对作者和研究人员的服务,我们提供此版本的已接受稿件(AM)。在最终出版版本记录(VoR)之前,将对该手稿进行编辑、排版和审查。在制作和印前,可能会发现可能影响内容的错误,所有适用于期刊的法律免责声明也与这些版本有关。密苏里州的数据由密苏里州自然资源部、密苏里州农业实验站和食品与农业研究所提供资金。特别赞赏的是安东尼·索普和卡罗尔·波拉德。
{"title":"Carbon and nutrient sequestration in small impoundments: a regional study with global implications","authors":"John R. Jones, Kimberly Pope-Cole, Daniel V. Obrecht, J.D. Harlan, Lesley B. Knoll, John A. Downing","doi":"10.1080/20442041.2023.2265799","DOIUrl":"https://doi.org/10.1080/20442041.2023.2265799","url":null,"abstract":"AbstractThe rate of sequestration of carbon, nitrogen and phosphorus by lentic ecosystems informs both the global carbon budget and the remediation of eutrophication. Here we estimate carbon, nitrogen and phosphorus burial in sediments of 34 lakes in Missouri, USA, and compare them to those found in other agricultural areas as well as to global estimates. Mean sediment accumulation rates varied by orders of magnitude among study regions, with the largest values (average 6 cm y-1) in impounded systems surrounded by intensive agriculture. Rates increased with the drainage ratio and decreased with the abundance of other surface water in the catchment (e.g., farm ponds). Average organic carbon burial differed by an order of magnitude among study regions (average 150-2100 g m-2 y-1) with differences related to the drainage ratio and eutrophication. Organic carbon burial was strongly correlated with burial rates of nitrogen and phosphorus. Comparisons with a diversity of global data show that many Midwestern USA impoundments have extremely high rates of biogeochemical burial likely due to the details of agricultural cropping systems, landscape configuration, and soil characteristics.Keywords: carbonlakesnitrogenphosphorussedimentsequestrationDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. AcknowledgementsFunding for the Missouri data was provided by the Missouri Department of Natural Resources and Missouri Agricultural Experiment Station and Food & Agriculture Research Institute. Specific appreciation is extended to Anthony Thorpe and Carol Pollard.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136211012","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 : 2023-10-03DOI: 10.1080/20442041.2023.2266177
Jouko Sarvala, Harri Helminen
AbstractIn an attempt to improve water quality in two eutrophic shallow Finnish lakes, Kirkkojärvi and Littoistenjärvi, phosphorus precipitation with polyaluminum chloride was performed in June 2002 and May 2017, respectively. Here we compare the effects of the chemical treatment between the lakes to enhance our understanding of the mechanisms involved and to improve the predictability of similar management actions in the future. All plankton was killed in the treatment, but phytoplankton recovered in four weeks and crustacean zooplankton in two months. Because removal fishing had not been successful, the chemical dosage in Kirkkojärvi was intentionally set so high that the treatment killed all fish. In Littoistenjärvi pH was adjusted so that most fish survived. In Kirkkojärvi, the summer phosphorus (TP) and chlorophyll (Chl) concentrations in three years after the treatment dropped by 85 and 88% compared to those recorded three years before the treatment. Cyanobacterial biomass declined by 88%, only occasional blooms appearing in three out of twenty years. The average TP and Chl of the post-treatment period 2006–2020 indicated substantial improvement in the ecological state from “bad” to “moderate” rating of the EU Water Framework Directive (WFD). In Littoistenjärvi, the corresponding declines due to the Al treatment were 72% in TP and 87% in Chl concentration, and 92% in cyanobacterial biomass. Longevity of treatment effects was estimated using the upper boundaries of the WFD quality classes as the target values. Water quality changes followed the internal loading of TP, affected by temperature and pH.Keywords: total phosphoruschlorophyll aeutrophicationlake managementshallow lakesDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. Acknowledgements:Thanks are due to the numerous people involved in the monitoring and management of the study lakes. The actual chemical treatments became possible through the dedicated efforts of Jukka Heikkilä (Littoistenjärvi) and Eeva Ståhle (Kirkkojärvi). Funding was provided by the local municipalities, the Ministry of the Environment, and the Academy of Finland.Disclosure statement:The authors report there are no competing interests to declare.Data availability statement:Water chemistry, phytoplankton and fish data are available through Finnish Environment Institute’s open data service. Other data are available from the authors on request.
{"title":"Impacts of chemical precipitation of phosphorus with polyaluminum chloride in two eutrophic lakes in southwest Finland","authors":"Jouko Sarvala, Harri Helminen","doi":"10.1080/20442041.2023.2266177","DOIUrl":"https://doi.org/10.1080/20442041.2023.2266177","url":null,"abstract":"AbstractIn an attempt to improve water quality in two eutrophic shallow Finnish lakes, Kirkkojärvi and Littoistenjärvi, phosphorus precipitation with polyaluminum chloride was performed in June 2002 and May 2017, respectively. Here we compare the effects of the chemical treatment between the lakes to enhance our understanding of the mechanisms involved and to improve the predictability of similar management actions in the future. All plankton was killed in the treatment, but phytoplankton recovered in four weeks and crustacean zooplankton in two months. Because removal fishing had not been successful, the chemical dosage in Kirkkojärvi was intentionally set so high that the treatment killed all fish. In Littoistenjärvi pH was adjusted so that most fish survived. In Kirkkojärvi, the summer phosphorus (TP) and chlorophyll (Chl) concentrations in three years after the treatment dropped by 85 and 88% compared to those recorded three years before the treatment. Cyanobacterial biomass declined by 88%, only occasional blooms appearing in three out of twenty years. The average TP and Chl of the post-treatment period 2006–2020 indicated substantial improvement in the ecological state from “bad” to “moderate” rating of the EU Water Framework Directive (WFD). In Littoistenjärvi, the corresponding declines due to the Al treatment were 72% in TP and 87% in Chl concentration, and 92% in cyanobacterial biomass. Longevity of treatment effects was estimated using the upper boundaries of the WFD quality classes as the target values. Water quality changes followed the internal loading of TP, affected by temperature and pH.Keywords: total phosphoruschlorophyll aeutrophicationlake managementshallow lakesDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. Acknowledgements:Thanks are due to the numerous people involved in the monitoring and management of the study lakes. The actual chemical treatments became possible through the dedicated efforts of Jukka Heikkilä (Littoistenjärvi) and Eeva Ståhle (Kirkkojärvi). Funding was provided by the local municipalities, the Ministry of the Environment, and the Academy of Finland.Disclosure statement:The authors report there are no competing interests to declare.Data availability statement:Water chemistry, phytoplankton and fish data are available through Finnish Environment Institute’s open data service. Other data are available from the authors on request.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135738958","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 : 2023-10-02DOI: 10.1080/20442041.2023.2265798
Marianne Côté, Göran Englund, Tom Andersen, Dag O. Hessen, Anders G. Finstad, Claude Bélanger, Raoul-Marie Couture
AbstractLakes that are pivotal for recreation and economically relevant activities are often remote and not very well studied, which hinders the application of predictive lake models for their management. Here, we provide an approach to simulate, by means of the process-oriented model MyLake, water temperature, ice cover duration, dissolved oxygen, and light attenuation in 198 data-poor lakes based on parameters obtained for a subgroup of 12 data-rich lakes and morphometric data. Specifically, the model is first calibrated using a genetic algorithm on well-studied lakes. Then, simple relationships between the fitted parameters and lake-catchment morphometric properties are derived. The results of simulations using fitted and derived parameters are then compared. The loss in goodness-of-fit, expressed as root mean square error (RMSE), incurred by using estimated rather than calibrated parameters, is 0.17 oC for water temperature and 0.82 mg L-1 for dissolved oxygen. These general relationships are then used to provide the model parameters for 198 data-poor lakes distributed throughout Sweden and model these lakes. Overall, this proof of concept allows simulating lakes selected based on their relevance for lake management rather than based on the availability of extensive field datasets.Keywords: LakesLake modelingoxythermal habitatsclimate change impactmodel calibrationdata-poor lakesDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. AcknowledgmentsWe thank Koji Tominaga (Nanyang Technological University, Singapore) and Benjamin Laken (Cervest Inc., London, United-Kingdom) for the retrieval and preparation of the climate data. RMC acknowledges funding from the Sentinel North program of Université Laval, made possible, in part, thanks to funding from the Canada First Research Excellence program. Support from the Natural Sciences and Engineering Research Council of Canada, through the Discovery Grant program, from the Advancing climate science in Canada project “Changing carbon sinks in subarctic Canada” and from the Institut nordique du Québec (INQ) is also acknowledged. GE, DOH, TA and AGF acknowledge support from the Research Council of Norway projects #224779 and #221410.
{"title":"Towards modeling data-poor lakes at the regional scale using parameters from data-rich lakes and relationships to lake characteristics.","authors":"Marianne Côté, Göran Englund, Tom Andersen, Dag O. Hessen, Anders G. Finstad, Claude Bélanger, Raoul-Marie Couture","doi":"10.1080/20442041.2023.2265798","DOIUrl":"https://doi.org/10.1080/20442041.2023.2265798","url":null,"abstract":"AbstractLakes that are pivotal for recreation and economically relevant activities are often remote and not very well studied, which hinders the application of predictive lake models for their management. Here, we provide an approach to simulate, by means of the process-oriented model MyLake, water temperature, ice cover duration, dissolved oxygen, and light attenuation in 198 data-poor lakes based on parameters obtained for a subgroup of 12 data-rich lakes and morphometric data. Specifically, the model is first calibrated using a genetic algorithm on well-studied lakes. Then, simple relationships between the fitted parameters and lake-catchment morphometric properties are derived. The results of simulations using fitted and derived parameters are then compared. The loss in goodness-of-fit, expressed as root mean square error (RMSE), incurred by using estimated rather than calibrated parameters, is 0.17 oC for water temperature and 0.82 mg L-1 for dissolved oxygen. These general relationships are then used to provide the model parameters for 198 data-poor lakes distributed throughout Sweden and model these lakes. Overall, this proof of concept allows simulating lakes selected based on their relevance for lake management rather than based on the availability of extensive field datasets.Keywords: LakesLake modelingoxythermal habitatsclimate change impactmodel calibrationdata-poor lakesDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. AcknowledgmentsWe thank Koji Tominaga (Nanyang Technological University, Singapore) and Benjamin Laken (Cervest Inc., London, United-Kingdom) for the retrieval and preparation of the climate data. RMC acknowledges funding from the Sentinel North program of Université Laval, made possible, in part, thanks to funding from the Canada First Research Excellence program. Support from the Natural Sciences and Engineering Research Council of Canada, through the Discovery Grant program, from the Advancing climate science in Canada project “Changing carbon sinks in subarctic Canada” and from the Institut nordique du Québec (INQ) is also acknowledged. GE, DOH, TA and AGF acknowledge support from the Research Council of Norway projects #224779 and #221410.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135895981","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 : 2023-10-02DOI: 10.1080/20442041.2023.2265802
Rachel M. Pilla, Craig E. Williamson, Erin P. Overholt, Kevin C. Rose, Stella A. Berger, Raoul-Marie Couture, Heleen A. de Wit, Ignacio Granados, Hans-Peter F. Grossart, Georgiy B. Kirillin, Alo Laas, Jens C. Nejstgaard, James A. Rusak, Mark W. Swinton, Manuel Toro, Huaxia Yao
Abstract:Depletion of deepwater dissolved oxygen (DO) in lakes has become increasingly prevalent and severe due to many external stressors, potentially threatening human-derived ecosystem services ranging from drinking water quality to fisheries. Using year-round, high-frequency DO data from 12 dimictic lakes, we compared three measures of deepwater DO depletion during winter and summer: DO depletion rate, DO minimum, and hypoxia duration. Hypoxia (DO < 3 mg L-1) occurred in over half of the lakes and persisted an average of 83% longer in summer than in winter. While we found no difference in DO depletion rates between winter versus summer, these rates were significantly related to lake morphology in winter but trophic state in summer. In assessing cross-seasonal linkages, we found limited evidence for significant legacy effects in deepwater DO availability. Only fall mixing efficacy significantly responded to the previous summer’s minimum DO saturation, but always reached moderate to high DO replenishment levels (> 65%) regardless of the previous summer’s DO depletion severity. This lack of ecological memory in deepwater DO depletion across seasons suggests that deepwater DO largely resets during spring and fall mixing periods in most years in these dimictic lakes. Understanding the patterns and drivers in deepwater DO depletion in both winter and summer is a key step forward for predicting future chemical and biological consequences of seasonal DO depletion and managing lake ecosystem health, as well as the effects that climate change may have on these patterns.Key Words: oxygen depletionlegacy effectslake mixingclimate changeoxygen minimum zoneswater qualityecological memoryDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. Acknowledgements:This work was conceived at the Global Lake Ecological Observatory Network (GLEON), and benefited from continued participation and travel support from GLEON. R.M.P., C.E.W., and E.P.O. were supported by US National Science Foundation grants DEB 1754265, DEB 1754276, and DEB 1950170 and Ohio Eminent Scholar of Ecosystem Ecology funds. K.C.R. was funded by NSF grants 1638704, 1754265, and 1761805. S.A.B., H.P.G., and J.C.N. were supported by the German Federal Ministry of Education and Research (BMBF) within the Collaborative Project “Bridging in Biodiversity Science - BIBS” (01LC1501G) and H.P.G.by the Leibniz Foundation. R.-M. C. was supported by the Sentinel North Research Chair in Aquatic Geochemistry (Sentinel North, a Canada First Research Excellence Fund Program). H.W. received support from the Norwegian Research Council
{"title":"Deepwater dissolved oxygen shows little ecological memory between lake phenological seasons","authors":"Rachel M. Pilla, Craig E. Williamson, Erin P. Overholt, Kevin C. Rose, Stella A. Berger, Raoul-Marie Couture, Heleen A. de Wit, Ignacio Granados, Hans-Peter F. Grossart, Georgiy B. Kirillin, Alo Laas, Jens C. Nejstgaard, James A. Rusak, Mark W. Swinton, Manuel Toro, Huaxia Yao","doi":"10.1080/20442041.2023.2265802","DOIUrl":"https://doi.org/10.1080/20442041.2023.2265802","url":null,"abstract":"Abstract:Depletion of deepwater dissolved oxygen (DO) in lakes has become increasingly prevalent and severe due to many external stressors, potentially threatening human-derived ecosystem services ranging from drinking water quality to fisheries. Using year-round, high-frequency DO data from 12 dimictic lakes, we compared three measures of deepwater DO depletion during winter and summer: DO depletion rate, DO minimum, and hypoxia duration. Hypoxia (DO < 3 mg L-1) occurred in over half of the lakes and persisted an average of 83% longer in summer than in winter. While we found no difference in DO depletion rates between winter versus summer, these rates were significantly related to lake morphology in winter but trophic state in summer. In assessing cross-seasonal linkages, we found limited evidence for significant legacy effects in deepwater DO availability. Only fall mixing efficacy significantly responded to the previous summer’s minimum DO saturation, but always reached moderate to high DO replenishment levels (> 65%) regardless of the previous summer’s DO depletion severity. This lack of ecological memory in deepwater DO depletion across seasons suggests that deepwater DO largely resets during spring and fall mixing periods in most years in these dimictic lakes. Understanding the patterns and drivers in deepwater DO depletion in both winter and summer is a key step forward for predicting future chemical and biological consequences of seasonal DO depletion and managing lake ecosystem health, as well as the effects that climate change may have on these patterns.Key Words: oxygen depletionlegacy effectslake mixingclimate changeoxygen minimum zoneswater qualityecological memoryDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. Acknowledgements:This work was conceived at the Global Lake Ecological Observatory Network (GLEON), and benefited from continued participation and travel support from GLEON. R.M.P., C.E.W., and E.P.O. were supported by US National Science Foundation grants DEB 1754265, DEB 1754276, and DEB 1950170 and Ohio Eminent Scholar of Ecosystem Ecology funds. K.C.R. was funded by NSF grants 1638704, 1754265, and 1761805. S.A.B., H.P.G., and J.C.N. were supported by the German Federal Ministry of Education and Research (BMBF) within the Collaborative Project “Bridging in Biodiversity Science - BIBS” (01LC1501G) and H.P.G.by the Leibniz Foundation. R.-M. C. was supported by the Sentinel North Research Chair in Aquatic Geochemistry (Sentinel North, a Canada First Research Excellence Fund Program). H.W. received support from the Norwegian Research Council","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135830936","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 : 2023-09-25DOI: 10.1080/20442041.2023.2262353
Maria Bisquert-Ribes, David J. Horne, Joan Miguel Benavente, Raül Martínez, Pablo Vera, Juan Rueda, Francesc Mesquita-Joanes
AbstractMediterranean rice fields are suited for biological invasions, as they are human-impacted temporary water bodies filled during summer, a hot period with scarce rains in the area. These anthropogenic ecosystems have been previously identified as potential gateways for exotic ostracods to colonize nearby wetlands. In this work, we aimed at comparing the rice fields ostracod composition and a shallow lake in a protected Mediterranean wetland (Albufera N2000 site, Eastern Iberian Peninsula). We found 37 ostracod species, 13 of which were considered exotic. Rice fields harbored the highest number of both native and exotic ostracod taxa (16 and 12 species, respectively). Our hypothesis that exotic species were more abundant during summer, whereas native species dominated the community in winter was confirmed by the analysis of temporal changes along the rice field cycle. Comparing the ostracod composition of rice fields with that of the littoral and central parts of the hypertrophic Lake Albufera showed a clear differentiation according to a spatially constrained cluster analysis, with the richest ostracod community corresponding to the rice fields, whereas the center of the lake, with scarce vegetation, had the lowest species richness. Finally, we suggest some criteria that could be followed to consider an ostracod species as native or exotic when its origin is unknown and discuss the potential origin of the exotic species found, the pathways they might have used to arrive and to establish in new areas, and the biological traits that may facilitate the spread of ostracods over new areas after their arrival.Keywords: alien crustaceansfreshwater invasionsOstracodapaddy fieldsshallow lakeDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. AcknowledgementsWe wish to thank the staff responsible of the sampling campaigns, B. Dies (Fundació Assut), G. Valieri (SIPCAM) and SEO/BirdLife (Valencia). We would also like to thank P. Mateache, former director of the Albufera N2000 site; M. Zizlavsky for his assistance in sample processing; and all SEO/BirdLife volunteers for their assistance during sampling campaigns. Giles Miller is greatly thanked for his support during the stay of MB-R at the NHM. The SCSIE microscopy personnel at the University of Valencia are acknowledged for their help with SEM imaging. We are very grateful to the anonymous reviewers for their helpful suggestions on a previous version of the manuscript.FundingThis publication is part of I + D + i project PID2020-112959GB-I00, funded by MCIN/AEI/10.13039/501100011033. This research was also supported by
摘要地中海稻田是受人类影响的临时水体,夏季是该地区降雨稀少的炎热季节,因此适合生物入侵。这些人为生态系统以前被认为是外来介形虫在附近湿地定居的潜在门户。在这项工作中,我们旨在比较地中海保护湿地(东伊比利亚半岛Albufera N2000遗址)稻田介形类组成和浅湖。我们发现了37种介形虫,其中13种被认为是外来物种。稻田的本地介形类和外来介形类数量最多,分别为16种和12种。我们的假设是外来物种在夏季更丰富,而本地物种在冬季占优势,这一假设通过稻田周期的时间变化分析得到了证实。通过空间约束聚类分析,将肥厚的阿尔布费拉湖的稻田与湖岸和湖心地区的介形类组成进行比较,发现稻田对应的介形类群落最丰富,湖心地区植被稀少,物种丰富度最低。最后,我们提出了一些可以遵循的标准,当其起源未知时,可以将介形虫物种视为本地或外来物种,并讨论了发现的外来物种的潜在起源,它们可能用来到达并在新地区建立的途径,以及可能促进介形虫到达新地区后在新地区传播的生物学特性。关键词:外来甲壳类;淡水入侵;浅水湖泊;在最终出版版本记录(VoR)之前,将对该手稿进行编辑、排版和审查。在制作和印前,可能会发现可能影响内容的错误,所有适用于期刊的法律免责声明也与这些版本有关。我们要感谢负责采样活动的工作人员,B. Dies (Fundació Assut), G. Valieri (SIPCAM)和SEO/BirdLife(瓦伦西亚)。我们还要感谢Albufera N2000站点的前主任P. Mateache;Zizlavsky先生在样品处理方面的协助;以及所有SEO/BirdLife志愿者在采样活动期间的协助。非常感谢贾尔斯·米勒在MB-R在NHM期间的支持。巴伦西亚大学SCSIE显微镜人员在扫描电镜成像方面的帮助得到了认可。我们非常感谢匿名审稿人对之前版本的手稿提出的有益建议。本文是I + D + I项目PID2020-112959GB-I00的一部分,由MCIN/AEI/10.13039/501100011033资助。这项研究也得到了Consellería de Innovación, Universidades, Ciencia y Sociedad Digital(瓦伦西亚社区政府)通过EXOCRUST项目(代码AICO/2020/182)的支持。SEO/BirdLife对稻田中大型无脊椎动物群落的研究由紧急情况局Desarrollo Rural农业协会Climática y Transición Ecológica(瓦伦西亚社区政府)资助。Bisquert-Ribes是由Ministerio de Educación y Formación professional(西班牙政府)设立的博士前奖学金(FPU19/02264)的获得者。披露声明作者未报告潜在的利益冲突。数据可用性声明如有合理要求,可向作者提供数据。
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Pub Date : 2023-09-11DOI: 10.1080/20442041.2023.2257457
Susanna A Wood, Marcus J Vandergoes, Javier Atalah, Jamie D Howarth, Sean Waters, Georgia Thomson-Laing, Lucy Thompson, David Hamilton, Xavier Pochon, David Kelly, Chris Moy, Andrew Rees, Marc Schallenerg, Rose Gregerson, Adelaine Moody, Lizette Reyes, Claire Shepherd, Henry Gard, Lisa Floerl, John K Pearman
Pressures on lakes in Aotearoa New Zealand are increasing due to elevated catchment nutrient loads, establishment of non-native species, and climate change. Current government legislation requires that pressures are managed to avoid eutrophication and degradation of lake health. This approach requires information on the state of lakes at regional and national scales, which is challenging as less than 5% are currently monitored. In this study, we (1) modelled lake trophic status at a national scale using a highly representative dataset and lake characteristics, land-use, and environmental parameters as predictor variables, and (2) identified lakes that should be prioritized for protection to prevent further degradation. Six statistical models were evaluated, with extreme boosting producing the highest predictive power and lowest error. This model indicated that for the 3,738 lakes in the dataset, 44% were eutrophic or of higher trophic state, 22% mesotrophic, and 34% oligotrophic or of lower trophic state. This data provides a benchmark to guide management and supports the call for more resourcing to restore lakes in Aotearoa New Zealand. To identify lakes to prioritise for protection we focused on the approximately 800 mesotrophic lakes. We used (1) the portion of lake catchment not within conservation estate, and (2) road access as proxies for the likelihood of land-use intensification, and the introduction of non-native species, respectively. Over 170 lakes with limited catchment protection and easy human access were identified. Immediate attention should be given to protecting these waterbodies to prevent the need for costly and resource-intensive remediation in the future.
{"title":"A national scale trophic state analysis to prioritize lakes for restoration in Aotearoa New Zealand","authors":"Susanna A Wood, Marcus J Vandergoes, Javier Atalah, Jamie D Howarth, Sean Waters, Georgia Thomson-Laing, Lucy Thompson, David Hamilton, Xavier Pochon, David Kelly, Chris Moy, Andrew Rees, Marc Schallenerg, Rose Gregerson, Adelaine Moody, Lizette Reyes, Claire Shepherd, Henry Gard, Lisa Floerl, John K Pearman","doi":"10.1080/20442041.2023.2257457","DOIUrl":"https://doi.org/10.1080/20442041.2023.2257457","url":null,"abstract":"Pressures on lakes in Aotearoa New Zealand are increasing due to elevated catchment nutrient loads, establishment of non-native species, and climate change. Current government legislation requires that pressures are managed to avoid eutrophication and degradation of lake health. This approach requires information on the state of lakes at regional and national scales, which is challenging as less than 5% are currently monitored. In this study, we (1) modelled lake trophic status at a national scale using a highly representative dataset and lake characteristics, land-use, and environmental parameters as predictor variables, and (2) identified lakes that should be prioritized for protection to prevent further degradation. Six statistical models were evaluated, with extreme boosting producing the highest predictive power and lowest error. This model indicated that for the 3,738 lakes in the dataset, 44% were eutrophic or of higher trophic state, 22% mesotrophic, and 34% oligotrophic or of lower trophic state. This data provides a benchmark to guide management and supports the call for more resourcing to restore lakes in Aotearoa New Zealand. To identify lakes to prioritise for protection we focused on the approximately 800 mesotrophic lakes. We used (1) the portion of lake catchment not within conservation estate, and (2) road access as proxies for the likelihood of land-use intensification, and the introduction of non-native species, respectively. Over 170 lakes with limited catchment protection and easy human access were identified. Immediate attention should be given to protecting these waterbodies to prevent the need for costly and resource-intensive remediation in the future.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135981444","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 : 2023-09-07DOI: 10.1080/20442041.2023.2255118
P. Kankaala, E. Sonninen, Eeva Einola, J. Huotari, Timo Huttula, Suvi Mäkelä, A. Ojala, M. Rask, T. Tulonen, L. Arvola
{"title":"Temporal and lake-specific variations in oxygen and hydrogen stable isotopes in a boreal lake-chain during two hydrologically differing years","authors":"P. Kankaala, E. Sonninen, Eeva Einola, J. Huotari, Timo Huttula, Suvi Mäkelä, A. Ojala, M. Rask, T. Tulonen, L. Arvola","doi":"10.1080/20442041.2023.2255118","DOIUrl":"https://doi.org/10.1080/20442041.2023.2255118","url":null,"abstract":"","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49668394","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 : 2023-08-10DOI: 10.1080/20442041.2023.2208515
Tao Huang, Yang Luo, Quanliang Jiang, Zhigang Zhang, Hao Yang, Changchun Huang
ABSTRACTThe concentration and sources of organic nitrogen (ON) in lake sediments affect lake nitrogen cycles. However, the factors influencing ON accumulation rate (ONAR) are unclear. We collected 3 sediment cores from northern, eastern, and southern Dianchi Lake (DC-N, DC-E, and DC-S, respectively) in July 2014, to study the effects of autochthonous and allochthonous sources of ON. The ON and ONAR increased 2.4–5.1 and 2.6–4.8 times, respectively, from 1900 to 2000, especially since the 1980s, when algal blooms have occurred more frequently. The ON decreased in the order DC-S > DC-N > DC-E, whereas the ONAR decreased in the order DC-N > DC-S > DC-E, suggesting that ONAR was influenced by ON content as well as the depositional environment. The total concentrations of n-alkanes (n-C12 to n-C34) ranged from 4719 to 61 960 ng g−1 in the 3 sediment cores, with proportions varying with vertical depth. The sources of ON were mainly allochthonous (soil erosion and terrestrial plants) and autochthonous (algal and aquatic plants) in DC-S and DC-N, respectively, and primarily mixed planktonic and terrestrial in DC-E. The stochastic impacts by regression on population, affluence, and technology (STIRPAT) model revealed that a 1% increase in air temperature and nitrogen fertilizer corresponded to an increase in ONAR by 23–33% and 20–79% in the Dianchi Lake basin, especially in DC-S and DC-E. However, a 1% increase in urban land area reduced ONAR by 2–11%, especially in DC-N. Our study suggests that the spatial and temporal ONAR in Dianchi Lake may increase in response to a warmer and wetter climate combined with increasing chemical nitrogen fertilizer application.KEYWORDS: algal bloomsDianchi Lakehuman activitiesn-alkanesorganic nitrogenSTIRPAT model AcknowledgementsWe thank Editage (www.editage.cn) for English language editing. We also sincerely thank the 2 anonymous reviewers and Associate Editor Dr. Grant Douglas for their constructive comments to improve the readability and scientific presentation of this manuscript.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was funded by the National Natural Science Foundation of China (Grant No. 41971009, 41503054, 41971286 and 41773097), and the Youth Top Talent funded by Nanjing Normal University.
{"title":"Synergistic impacts of climate change and human activities on spatiotemporal organic nitrogen burial variation in a plateau lake in southwest China","authors":"Tao Huang, Yang Luo, Quanliang Jiang, Zhigang Zhang, Hao Yang, Changchun Huang","doi":"10.1080/20442041.2023.2208515","DOIUrl":"https://doi.org/10.1080/20442041.2023.2208515","url":null,"abstract":"ABSTRACTThe concentration and sources of organic nitrogen (ON) in lake sediments affect lake nitrogen cycles. However, the factors influencing ON accumulation rate (ONAR) are unclear. We collected 3 sediment cores from northern, eastern, and southern Dianchi Lake (DC-N, DC-E, and DC-S, respectively) in July 2014, to study the effects of autochthonous and allochthonous sources of ON. The ON and ONAR increased 2.4–5.1 and 2.6–4.8 times, respectively, from 1900 to 2000, especially since the 1980s, when algal blooms have occurred more frequently. The ON decreased in the order DC-S > DC-N > DC-E, whereas the ONAR decreased in the order DC-N > DC-S > DC-E, suggesting that ONAR was influenced by ON content as well as the depositional environment. The total concentrations of n-alkanes (n-C12 to n-C34) ranged from 4719 to 61 960 ng g−1 in the 3 sediment cores, with proportions varying with vertical depth. The sources of ON were mainly allochthonous (soil erosion and terrestrial plants) and autochthonous (algal and aquatic plants) in DC-S and DC-N, respectively, and primarily mixed planktonic and terrestrial in DC-E. The stochastic impacts by regression on population, affluence, and technology (STIRPAT) model revealed that a 1% increase in air temperature and nitrogen fertilizer corresponded to an increase in ONAR by 23–33% and 20–79% in the Dianchi Lake basin, especially in DC-S and DC-E. However, a 1% increase in urban land area reduced ONAR by 2–11%, especially in DC-N. Our study suggests that the spatial and temporal ONAR in Dianchi Lake may increase in response to a warmer and wetter climate combined with increasing chemical nitrogen fertilizer application.KEYWORDS: algal bloomsDianchi Lakehuman activitiesn-alkanesorganic nitrogenSTIRPAT model AcknowledgementsWe thank Editage (www.editage.cn) for English language editing. We also sincerely thank the 2 anonymous reviewers and Associate Editor Dr. Grant Douglas for their constructive comments to improve the readability and scientific presentation of this manuscript.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was funded by the National Natural Science Foundation of China (Grant No. 41971009, 41503054, 41971286 and 41773097), and the Youth Top Talent funded by Nanjing Normal University.","PeriodicalId":49061,"journal":{"name":"Inland Waters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135492963","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 : 2023-08-02DOI: 10.1080/20442041.2023.2242084
Fee-Nanett Trau, Kathrin Fisch, S. Lorenz
{"title":"Habitat type strongly influences the structural benthic invertebrate community composition in a landscape characterized by ubiquitous, long-term occurrences of agricultural stress","authors":"Fee-Nanett Trau, Kathrin Fisch, S. Lorenz","doi":"10.1080/20442041.2023.2242084","DOIUrl":"https://doi.org/10.1080/20442041.2023.2242084","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":"45900017","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}