Vegetation transitions drive the autotrophy-heterotrophy balance in Arctic lakes
“Arctic greening” will alter vegetation quantity and quality in northern watersheds, with possible consequences for lake metabolic balance. We used paleolimnology from six Arctic lakes in Greenland, Norway, and Alaska to develop a conceptual model describing how climate-driven shifts in terrestrial...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
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Wiley Open Access
2018
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| Online Access: | https://eprints.nottingham.ac.uk/51915/ |
| _version_ | 1848798602869080064 |
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| author | McGowan, Suzanne Anderson, N. John Edwards, Mary E. Hopla, Emma Jones, Viv Langdon, Pete G. Law, Antonia Soloveiva, Nadia Turner, Simon van Hardenbroek, Maarten Whiteford, Erika J. Wiik, Emma |
| author_facet | McGowan, Suzanne Anderson, N. John Edwards, Mary E. Hopla, Emma Jones, Viv Langdon, Pete G. Law, Antonia Soloveiva, Nadia Turner, Simon van Hardenbroek, Maarten Whiteford, Erika J. Wiik, Emma |
| author_sort | McGowan, Suzanne |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | “Arctic greening” will alter vegetation quantity and quality in northern watersheds, with possible consequences for lake metabolic balance. We used paleolimnology from six Arctic lakes in Greenland, Norway, and Alaska to develop a conceptual model describing how climate-driven shifts in terrestrial vegetation (spanning herb to boreal forest) influence lake autotrophic biomass (as chlorophyll and carotenoid pigments). Major autotrophic transitions occurred, including (1) optimal production of siliceous algae and cyanobacteria/chlorophytes at intermediate vegetation cover (dwarf shrub and Betula; dissolved organic carbon (DOC) range of 2–4 mg L-1), below and above which UVR exposure (DOC;<2 mgL-1) and light extinction (DOC;>4 mgL-1), respectively limit algal biomass, (2) an increase in potentially mixotrophic cryptophytes with higher forest cover and allochthonous carbon supply. Vegetation cover appears to influence lake autotrophs by changing influx of (colored) dissolved organic matter which has multiple interacting roles—as a photoprotectant—in light attenuation and in macronutrient (carbon, nitrogen) supply. |
| first_indexed | 2025-11-14T20:22:23Z |
| format | Article |
| id | nottingham-51915 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:22:23Z |
| publishDate | 2018 |
| publisher | Wiley Open Access |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-519152024-08-15T15:28:29Z https://eprints.nottingham.ac.uk/51915/ Vegetation transitions drive the autotrophy-heterotrophy balance in Arctic lakes McGowan, Suzanne Anderson, N. John Edwards, Mary E. Hopla, Emma Jones, Viv Langdon, Pete G. Law, Antonia Soloveiva, Nadia Turner, Simon van Hardenbroek, Maarten Whiteford, Erika J. Wiik, Emma “Arctic greening” will alter vegetation quantity and quality in northern watersheds, with possible consequences for lake metabolic balance. We used paleolimnology from six Arctic lakes in Greenland, Norway, and Alaska to develop a conceptual model describing how climate-driven shifts in terrestrial vegetation (spanning herb to boreal forest) influence lake autotrophic biomass (as chlorophyll and carotenoid pigments). Major autotrophic transitions occurred, including (1) optimal production of siliceous algae and cyanobacteria/chlorophytes at intermediate vegetation cover (dwarf shrub and Betula; dissolved organic carbon (DOC) range of 2–4 mg L-1), below and above which UVR exposure (DOC;<2 mgL-1) and light extinction (DOC;>4 mgL-1), respectively limit algal biomass, (2) an increase in potentially mixotrophic cryptophytes with higher forest cover and allochthonous carbon supply. Vegetation cover appears to influence lake autotrophs by changing influx of (colored) dissolved organic matter which has multiple interacting roles—as a photoprotectant—in light attenuation and in macronutrient (carbon, nitrogen) supply. Wiley Open Access 2018-05-04 Article PeerReviewed McGowan, Suzanne, Anderson, N. John, Edwards, Mary E., Hopla, Emma, Jones, Viv, Langdon, Pete G., Law, Antonia, Soloveiva, Nadia, Turner, Simon, van Hardenbroek, Maarten, Whiteford, Erika J. and Wiik, Emma (2018) Vegetation transitions drive the autotrophy-heterotrophy balance in Arctic lakes. Limnology and Oceanography Letters . ISSN 2378-2242 https://aslopubs.onlinelibrary.wiley.com/doi/abs/10.1002/lol2.10086 doi:10.1002/lol2.10086 doi:10.1002/lol2.10086 |
| spellingShingle | McGowan, Suzanne Anderson, N. John Edwards, Mary E. Hopla, Emma Jones, Viv Langdon, Pete G. Law, Antonia Soloveiva, Nadia Turner, Simon van Hardenbroek, Maarten Whiteford, Erika J. Wiik, Emma Vegetation transitions drive the autotrophy-heterotrophy balance in Arctic lakes |
| title | Vegetation transitions drive the autotrophy-heterotrophy balance in Arctic lakes |
| title_full | Vegetation transitions drive the autotrophy-heterotrophy balance in Arctic lakes |
| title_fullStr | Vegetation transitions drive the autotrophy-heterotrophy balance in Arctic lakes |
| title_full_unstemmed | Vegetation transitions drive the autotrophy-heterotrophy balance in Arctic lakes |
| title_short | Vegetation transitions drive the autotrophy-heterotrophy balance in Arctic lakes |
| title_sort | vegetation transitions drive the autotrophy-heterotrophy balance in arctic lakes |
| url | https://eprints.nottingham.ac.uk/51915/ https://eprints.nottingham.ac.uk/51915/ https://eprints.nottingham.ac.uk/51915/ |