Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status
The molecular weight distributions and hydrolysable neutral sugar composition of dissolved organic carbon (DOC) was investigated in four maritime Antarctic lakes on Signy Island of different trophic status; Heywood Lake (eutrophic), Light Lake (oligo-mesotrophic), Sombre Lake and Moss Lake (both oli...
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ftnerc:oai:nora.nerc.ac.uk:105 2024-06-09T07:41:07+00:00 Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status Quayle, Wendy C. Convey, Peter 2006 http://nora.nerc.ac.uk/id/eprint/105/ https://doi.org/10.1007/s10498-005-3882-x unknown Springer Quayle, Wendy C.; Convey, Peter orcid:0000-0001-8497-9903 . 2006 Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status. Aquatic Geochemistry, 12 (2). 161-178. https://doi.org/10.1007/s10498-005-3882-x <https://doi.org/10.1007/s10498-005-3882-x> Biology and Microbiology Publication - Article PeerReviewed 2006 ftnerc https://doi.org/10.1007/s10498-005-3882-x 2024-05-15T08:39:04Z The molecular weight distributions and hydrolysable neutral sugar composition of dissolved organic carbon (DOC) was investigated in four maritime Antarctic lakes on Signy Island of different trophic status; Heywood Lake (eutrophic), Light Lake (oligo-mesotrophic), Sombre Lake and Moss Lake (both oligotrophic). Tangential flow ultra-filtration (TFU) was used to separate DOC into high molecular weight (HMW; >1000 Da) and low molecular weight (LMW; < 1000 Da) size fractions. Pulsed amperometric detection-high performance liquid chromatography (PAD-HPLC) was used to determine the hydrolysable neutral sugar molecular composition of each size fraction. Total DOC concentrations defined the trophic trend in the four lakes and ranged from 8 to 303 μM. The <1000 Da fraction of all the lakes dominated the DOC distribution, comprising 76% in Light Lake which also had the highest chl-a concentrations. Heywood Lake was relatively enriched in >1000 Da total organic carbon and had extremely high concentrations of total hydrolysable neutral sugars (11 μM) corresponding to 43% of total DOC. However, no clear pattern was apparent with regard to lake trophic status and potential sources of DOC, and the measured variations in individual aldose concentration, composition and their various molecular weight fractions. Article in Journal/Newspaper Antarc* Antarctic Signy Island Natural Environment Research Council: NERC Open Research Archive Antarctic Four Lakes ENVELOPE(-126.826,-126.826,54.858,54.858) Heywood ENVELOPE(-59.683,-59.683,-62.317,-62.317) Heywood Lake ENVELOPE(-45.609,-45.609,-60.691,-60.691) Light Lake ENVELOPE(-45.648,-45.648,-60.699,-60.699) Moss Lake ENVELOPE(-45.623,-45.623,-60.694,-60.694) Signy Island ENVELOPE(-45.595,-45.595,-60.708,-60.708) Sombre Lake ENVELOPE(-45.615,-45.615,-60.687,-60.687) Aquatic Geochemistry 12 2 161 178 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Biology and Microbiology |
spellingShingle |
Biology and Microbiology Quayle, Wendy C. Convey, Peter Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status |
topic_facet |
Biology and Microbiology |
description |
The molecular weight distributions and hydrolysable neutral sugar composition of dissolved organic carbon (DOC) was investigated in four maritime Antarctic lakes on Signy Island of different trophic status; Heywood Lake (eutrophic), Light Lake (oligo-mesotrophic), Sombre Lake and Moss Lake (both oligotrophic). Tangential flow ultra-filtration (TFU) was used to separate DOC into high molecular weight (HMW; >1000 Da) and low molecular weight (LMW; < 1000 Da) size fractions. Pulsed amperometric detection-high performance liquid chromatography (PAD-HPLC) was used to determine the hydrolysable neutral sugar molecular composition of each size fraction. Total DOC concentrations defined the trophic trend in the four lakes and ranged from 8 to 303 μM. The <1000 Da fraction of all the lakes dominated the DOC distribution, comprising 76% in Light Lake which also had the highest chl-a concentrations. Heywood Lake was relatively enriched in >1000 Da total organic carbon and had extremely high concentrations of total hydrolysable neutral sugars (11 μM) corresponding to 43% of total DOC. However, no clear pattern was apparent with regard to lake trophic status and potential sources of DOC, and the measured variations in individual aldose concentration, composition and their various molecular weight fractions. |
format |
Article in Journal/Newspaper |
author |
Quayle, Wendy C. Convey, Peter |
author_facet |
Quayle, Wendy C. Convey, Peter |
author_sort |
Quayle, Wendy C. |
title |
Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status |
title_short |
Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status |
title_full |
Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status |
title_fullStr |
Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status |
title_full_unstemmed |
Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status |
title_sort |
concentration, molecular weight distribution and neutral sugar composition of doc in maritime antarctic lakes of differing trophic status |
publisher |
Springer |
publishDate |
2006 |
url |
http://nora.nerc.ac.uk/id/eprint/105/ https://doi.org/10.1007/s10498-005-3882-x |
long_lat |
ENVELOPE(-126.826,-126.826,54.858,54.858) ENVELOPE(-59.683,-59.683,-62.317,-62.317) ENVELOPE(-45.609,-45.609,-60.691,-60.691) ENVELOPE(-45.648,-45.648,-60.699,-60.699) ENVELOPE(-45.623,-45.623,-60.694,-60.694) ENVELOPE(-45.595,-45.595,-60.708,-60.708) ENVELOPE(-45.615,-45.615,-60.687,-60.687) |
geographic |
Antarctic Four Lakes Heywood Heywood Lake Light Lake Moss Lake Signy Island Sombre Lake |
geographic_facet |
Antarctic Four Lakes Heywood Heywood Lake Light Lake Moss Lake Signy Island Sombre Lake |
genre |
Antarc* Antarctic Signy Island |
genre_facet |
Antarc* Antarctic Signy Island |
op_relation |
Quayle, Wendy C.; Convey, Peter orcid:0000-0001-8497-9903 . 2006 Concentration, molecular weight distribution and neutral sugar composition of DOC in maritime Antarctic lakes of differing trophic status. Aquatic Geochemistry, 12 (2). 161-178. https://doi.org/10.1007/s10498-005-3882-x <https://doi.org/10.1007/s10498-005-3882-x> |
op_doi |
https://doi.org/10.1007/s10498-005-3882-x |
container_title |
Aquatic Geochemistry |
container_volume |
12 |
container_issue |
2 |
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161 |
op_container_end_page |
178 |
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1801369543641137152 |