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Diatom dissolution in surface sediment samples from two regional lake datasets in the Northern Great Plains (NGP; n 5 64) and West Greenland (n 5 40) is assessed using a morphological approach categorizing valves during routine diatom analysis. Two dissolution indices are derived to parameterize dia...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.419.662 2023-05-15T16:27:51+02:00 Kingdom David B. Ryves Richard W. Battarbee Stephen Juggins Sherilyn C. Fritz N. John Anderson The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.662 http://www.aslo.org/lo/toc/vol_51/issue_3/1355.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.662 http://www.aslo.org/lo/toc/vol_51/issue_3/1355.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_51/issue_3/1355.pdf text ftciteseerx 2016-01-08T03:53:34Z Diatom dissolution in surface sediment samples from two regional lake datasets in the Northern Great Plains (NGP; n 5 64) and West Greenland (n 5 40) is assessed using a morphological approach categorizing valves during routine diatom analysis. Two dissolution indices are derived to parameterize diatom dissolution, and, when compared between two analysts in a blind test, show good correspondence and are closely correlated to diatom fragmentation. We explore the relationships between hydrochemical and physical lake parameters (including meromixis) on dissolution within both lake regions using multivariate methods and modeled with logistic regression. Salinity is the sole significant predictor of dissolution in West Greenland but salinity, 22 carbonate concentration ([CO3]) and meromixis are significant predictors in the NGP. Limnological parameters explain 40–59 % of variation in dissolution in both regions for both dissolution indices. The dissolution index methodology is applied to a short sediment sequence from Devils Lake (North Dakota), where diatom-inferred salinity inferences can be compared with a historical record of salinity fluctuations over the 20th century. Absolute errors in paleosalinity estimates are strongly correlated with diatom dissolution, with salinity overestimated in 8 out of 11 poorly preserved samples. Preservation does appear to constrain the reliability of the Text Greenland Unknown Devils Lake ENVELOPE(-107.884,-107.884,56.717,56.717) Greenland |
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Diatom dissolution in surface sediment samples from two regional lake datasets in the Northern Great Plains (NGP; n 5 64) and West Greenland (n 5 40) is assessed using a morphological approach categorizing valves during routine diatom analysis. Two dissolution indices are derived to parameterize diatom dissolution, and, when compared between two analysts in a blind test, show good correspondence and are closely correlated to diatom fragmentation. We explore the relationships between hydrochemical and physical lake parameters (including meromixis) on dissolution within both lake regions using multivariate methods and modeled with logistic regression. Salinity is the sole significant predictor of dissolution in West Greenland but salinity, 22 carbonate concentration ([CO3]) and meromixis are significant predictors in the NGP. Limnological parameters explain 40–59 % of variation in dissolution in both regions for both dissolution indices. The dissolution index methodology is applied to a short sediment sequence from Devils Lake (North Dakota), where diatom-inferred salinity inferences can be compared with a historical record of salinity fluctuations over the 20th century. Absolute errors in paleosalinity estimates are strongly correlated with diatom dissolution, with salinity overestimated in 8 out of 11 poorly preserved samples. Preservation does appear to constrain the reliability of the |
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The Pennsylvania State University CiteSeerX Archives |
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Text |
author |
David B. Ryves Richard W. Battarbee Stephen Juggins Sherilyn C. Fritz N. John Anderson |
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David B. Ryves Richard W. Battarbee Stephen Juggins Sherilyn C. Fritz N. John Anderson Kingdom |
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David B. Ryves Richard W. Battarbee Stephen Juggins Sherilyn C. Fritz N. John Anderson |
author_sort |
David B. Ryves |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.662 http://www.aslo.org/lo/toc/vol_51/issue_3/1355.pdf |
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ENVELOPE(-107.884,-107.884,56.717,56.717) |
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Devils Lake Greenland |
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Devils Lake Greenland |
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Greenland |
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Greenland |
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http://www.aslo.org/lo/toc/vol_51/issue_3/1355.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.419.662 http://www.aslo.org/lo/toc/vol_51/issue_3/1355.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766017405432102912 |