Lake and Reservoir Management最新文献

{"title":"The recovery of a shallow lake within an agricultural landscape of Minnesota—an interdisciplinary approach to understanding change","authors":"Donna J. Perleberg, Jesse P. Anderson, Andrew R. Streitz","doi":"10.1080/10402381.2023.2260334","DOIUrl":"https://doi.org/10.1080/10402381.2023.2260334","url":null,"abstract":"AbstractPerleberg DJ, Anderson JP, Streitz AR. 2023. The recovery of a shallow lake within an agricultural landscape of Minnesota—an interdisciplinary approach to change. Lake Reserv Manage. XX:XXX–XXX.This case study of Lake Shaokatan, Minnesota, reveals how long-term climate, hydrology, water chemistry, and macrophyte data can explain and predict shallow lake phase shifts. After decades of agricultural landscape nutrient loadings, lake and watershed management efforts successfully reduced summer mean total phosphorus and chlorophyll a concentrations to levels that met standards set specifically for shallow lakes in the Northern Glaciated Plains ecoregion (0.09 mg/L and 0.03 mg/L, respectively). The lake “flipped” from a turbid, phytoplankton-dominated phase (<20% macrophyte occurrence) to a clear, macrophyte-dominated phase (annual average of 90% occurrence), and the Minnesota Pollution Control Agency removed it from the state’s impaired waters list. A paired groundwater and lake water quality investigation was critical in understanding how increased precipitation might affect lake water quality, the relationship between groundwater and surface water in this system, and how compounds such as chloride and phosphorus are transported through the watershed. Lakewide macrophyte occurrence has been sustained for at least 7 yr. While abundant macrophyte growth helps maintain a clear water state, it can also create recreational boating issues. Lake managers question how long the lake will remain in the present clear phase as lake users weigh the recreational and aesthetic differences between the 2 phases.Keywords: Chloridegroundwaterlong-term monitoringmacrophyteMinnesotamonitoring wellsnutrient impairmentshallow lake management AcknowledgmentsWe are indebted to the numerous staff from MDNR and MPCA who conducted field surveys and assisted with data management. We thank them and our agencies’ leadership for recognizing the value of long-term, multidiscipline monitoring. J. Lauer, S. Kloiber, and E. Smith provided review and helpful comments that improved this article.Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":49148,"journal":{"name":"Lake and Reservoir Management","volume":" 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Managing cyanobacteria with a water quality control curtain in Iron Gate Reservoir, California","authors":"Brooke N. Mejica, Demian A. Ebert, Stacy K. Tanaka, Michael L. Deas","doi":"10.1080/10402381.2023.2259854","DOIUrl":"https://doi.org/10.1080/10402381.2023.2259854","url":null,"abstract":"Mejica BN, Ebert DA, Tanaka SK, Deas ML. 2023. Managing cyanobacteria with a water quality control curtain in Iron Gate Reservoir, California. Lake Reserv Manage. XX:XXX–XXX.","PeriodicalId":49148,"journal":{"name":"Lake and Reservoir Management","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135853910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Invasive species interactions affect nutrient cycling in a shallow reservoir: a mesocosm experiment","authors":"Stephen D. Shivers, Stephen W. Golladay, Matthew N. Waters, Susan B. Wilde, Nicholas S. Marzolf, Alan P. Covich","doi":"10.1080/10402381.2023.2248605","DOIUrl":"https://doi.org/10.1080/10402381.2023.2248605","url":null,"abstract":"AbstractShivers SD, Golladay SW, Waters MN, Wilde SB, Marzolf NS, Covich AP. 2023. Invasive species interactions affect nutrient cycling in a shallow reservoir: a mesocosm experiment. Lake Reserv Manage. XX:XXX–XXX.Nonnative species’ introductions can affect nutrient dynamics as new combinations of species form novel ecosystems. This experiment investigated how combinations of 3 invasive species, 1 submerged macrophyte (Hydrilla) and 2 benthic invertebrates (Corbicula and Pomacea), affected nutrient cycling in a shallow reservoir, Lake Seminole, Georgia, United States. To assess these effects, an in-reservoir mesocosm array was installed using different combinations of the invasive species. Eight physical and chemical parameters of water quality were measured in all the mesocosms (1 control, 7 treatments) weekly for the duration of the 5 wk experiment. Nitrogenous compounds were strongly affected by Hydrilla and Pomacea presence, with NO3-N concentrations decreasing in Hydrilla mesocosms and NH4-N and total nitrogen (TN) increasing in Pomacea mesocosms. Corbicula, when present, helped to mitigate increases in N concentrations, presumably as filter feeding reduced water column TN concentration. Overall, Hydrilla growth reduced inorganic N concentration. Pomacea grazing converted stored N to available organic and particulate N. Total phosphorus concentrations were not impacted by the invasive species treatments and increased in all mesocosms during the experiment. In short, Hydrilla and Corbicula are contributing to the uptake, conversion, and sequestration of nutrients that may increase eutrophication, while Pomacea is releasing potentially eutrophying nutrients. As climate change and human influence continue to create new combinations of species, it is important to understand the effects produced by novel combinations of species.Keywords: Corbiculahydrillanonnative speciesnutrient processingPomacea AcknowledgmentsThe authors thank Brian Clayton, Bryan Cloninger, Nathalie Smith, Barry Shelton, and the Golladay lab for assistance in the field and laboratory. The authors thank Jean Brock for assistance with ArcGIS. The authors also thank 3 anonymous reviewers for their insightful comments on an earlier version of this article.Additional informationFundingFunding for this project was provided by the National Science foundation [DEB 1404160 to A. P. Covich and S. D. Shivers], the Jones Center at Ichauway, and the University of Georgia Graduate School.","PeriodicalId":49148,"journal":{"name":"Lake and Reservoir Management","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135093620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}