Global trends in timing and rates of chlorophyll-a increase in cold-temperate and temperate lakes

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dc.contributor.authorAdams, Hannah
dc.contributor.authorYe, Jane
dc.contributor.authorPersaud, Bhaleka
dc.contributor.authorSlowinski, Stephanie
dc.contributor.authorKheyrollah Pour, Homa
dc.contributor.authorVan Cappellen, Philippe
dc.date.accessioned2023-05-02T18:19:44Z
dc.date.available2023-05-02T18:19:44Z
dc.date.issued2022-07-11
dc.descriptionAssociated publication: https://doi.org/10.5194/essd-14-5139-2022en
dc.description.abstractLakes are key ecosystems within the global biogeosphere. However, the environmental controls on the biological productivity of lakes – including surface temperature, ice phenology, nutrient loads, and mixing regime – are increasingly altered by climate warming and land-use changes. To better characterize global trends in lake productivity, we assembled a dataset on chlorophyll-a concentrations as well as associated water quality parameters and surface solar radiation for temperate and cold-temperate lakes experiencing seasonal ice cover. We developed a method to identify periods of rapid net increase of in situ chlorophyll-a concentrations from time series data and applied it to data collected between 1964 and 2019 across 343 lakes located north of 40◦ . The data show that the spring chlorophyll-a increase periods have been occurring earlier in the year, potentially extending the growing season and increasing the annual productivity of northern lakes. The dataset on chlorophyll-a increase rates and timing can be used to analyze trends and patterns in lake productivity across the northern hemisphere or at smaller, regional scales. We illustrate some trends extracted from the dataset and encourage other researchers to use the open dataset for their own research questions. The PCI dataset and additional data files can be openly accessed at the Federated Research Data Repository at https://doi.org/10.20383/102.0488 (Adams et al., 2021).en
dc.description.sponsorshipGlobal Water Futures (GWF), Lake Futures project || Canada First Research Excellence Fund (CFREF)en
dc.identifier.urihttp://hdl.handle.net/10012/19392
dc.language.isoenen
dc.publisherGeochemical Societyen
dc.relation.ispartofseriesGoldschmidt Conference;
dc.relation.urihttps://www.frdr-dfdr.ca/repo/dataset/729c2e27-62d6-499d-a317-e7f9b22bd4d1en
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectsolar radiationen
dc.subjectchlorophyll-aen
dc.subjectlake algal bloomen
dc.subjectlake productivityen
dc.titleGlobal trends in timing and rates of chlorophyll-a increase in cold-temperate and temperate lakesen
dc.typeConference Posteren
dcterms.bibliographicCitationAdams, Hannah; Ye, Jane; Persaud, Bhaleka; Slowinski, Stephanie; Pour, Homa Kheyrollah & Van Cappellen, Philippe. (2022). Global trends in timing and rates of chlorophyll-a increase in cold-temperate and temperate lakes. Goldschmidt Conference.en
uws.contributor.affiliation1Faculty of Scienceen
uws.contributor.affiliation2Earth and Environmental Sciencesen
uws.peerReviewStatusUnrevieweden
uws.scholarLevelGraduateen
uws.typeOfResourceTexten

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