Rapid change in early Holocene environments inferred from Lake Pupuke, Auckland City, New Zealand
Abstract Sediment cores from Lake Pupuke in Auckland City, New Zealand, contain a high‐resolution millennial to centennial‐scale record of changing climate and catchment hydrology spanning the past ca. 10 000 years. Here, we focus on the period between 9500 ± 25 and 7000 ± 155 cal. yr BP during whic...
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crwiley:10.1002/jqs.1153 2024-06-02T08:11:29+00:00 Rapid change in early Holocene environments inferred from Lake Pupuke, Auckland City, New Zealand Augustinus, Paul Bleakley, Nerida Deng, Yanbin Shane, Phil Cochran, Ursula 2008 http://dx.doi.org/10.1002/jqs.1153 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1153 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1153 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 23, issue 5, page 435-447 ISSN 0267-8179 1099-1417 journal-article 2008 crwiley https://doi.org/10.1002/jqs.1153 2024-05-03T12:05:04Z Abstract Sediment cores from Lake Pupuke in Auckland City, New Zealand, contain a high‐resolution millennial to centennial‐scale record of changing climate and catchment hydrology spanning the past ca. 10 000 years. Here, we focus on the period between 9500 ± 25 and 7000 ± 155 cal. yr BP during which grain size, diatom palaeoecology, biogenic silica concentrations, sediment elemental and carbon isotope geochemistry reflect changes in sediment sources and lake conditions, with a significant event commencing at ca. 8240 cal. yr BP, commensurate with a lowering of lake level, faster erosion rates and increased sediment influx with a duration of ca. 360 yrs. However, the changes in the lake are not reflected in the terrestrial vegetation, where the pollen record indicates that podocarp forest dominated the Auckland region, with apparent environmental stability during this part of the early Holocene. The synchronous change in most of the proxies between ca. 8240 and 7880 cal. yr BP at Lake Pupuke indicates the presence of a sustained episode of relatively low lake level and concomitant increased rate of erosion in the early Holocene that appears to be at least partly coeval with the 8200 cal. yr BP meltwater event proposed for the North Atlantic region. Copyright © 2008 John Wiley & Sons, Ltd. Article in Journal/Newspaper North Atlantic Wiley Online Library New Zealand Low Lake ENVELOPE(142.677,142.677,-66.993,-66.993) Journal of Quaternary Science 23 5 435 447 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Sediment cores from Lake Pupuke in Auckland City, New Zealand, contain a high‐resolution millennial to centennial‐scale record of changing climate and catchment hydrology spanning the past ca. 10 000 years. Here, we focus on the period between 9500 ± 25 and 7000 ± 155 cal. yr BP during which grain size, diatom palaeoecology, biogenic silica concentrations, sediment elemental and carbon isotope geochemistry reflect changes in sediment sources and lake conditions, with a significant event commencing at ca. 8240 cal. yr BP, commensurate with a lowering of lake level, faster erosion rates and increased sediment influx with a duration of ca. 360 yrs. However, the changes in the lake are not reflected in the terrestrial vegetation, where the pollen record indicates that podocarp forest dominated the Auckland region, with apparent environmental stability during this part of the early Holocene. The synchronous change in most of the proxies between ca. 8240 and 7880 cal. yr BP at Lake Pupuke indicates the presence of a sustained episode of relatively low lake level and concomitant increased rate of erosion in the early Holocene that appears to be at least partly coeval with the 8200 cal. yr BP meltwater event proposed for the North Atlantic region. Copyright © 2008 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Augustinus, Paul Bleakley, Nerida Deng, Yanbin Shane, Phil Cochran, Ursula |
spellingShingle |
Augustinus, Paul Bleakley, Nerida Deng, Yanbin Shane, Phil Cochran, Ursula Rapid change in early Holocene environments inferred from Lake Pupuke, Auckland City, New Zealand |
author_facet |
Augustinus, Paul Bleakley, Nerida Deng, Yanbin Shane, Phil Cochran, Ursula |
author_sort |
Augustinus, Paul |
title |
Rapid change in early Holocene environments inferred from Lake Pupuke, Auckland City, New Zealand |
title_short |
Rapid change in early Holocene environments inferred from Lake Pupuke, Auckland City, New Zealand |
title_full |
Rapid change in early Holocene environments inferred from Lake Pupuke, Auckland City, New Zealand |
title_fullStr |
Rapid change in early Holocene environments inferred from Lake Pupuke, Auckland City, New Zealand |
title_full_unstemmed |
Rapid change in early Holocene environments inferred from Lake Pupuke, Auckland City, New Zealand |
title_sort |
rapid change in early holocene environments inferred from lake pupuke, auckland city, new zealand |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1002/jqs.1153 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1153 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1153 |
long_lat |
ENVELOPE(142.677,142.677,-66.993,-66.993) |
geographic |
New Zealand Low Lake |
geographic_facet |
New Zealand Low Lake |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Journal of Quaternary Science volume 23, issue 5, page 435-447 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.1153 |
container_title |
Journal of Quaternary Science |
container_volume |
23 |
container_issue |
5 |
container_start_page |
435 |
op_container_end_page |
447 |
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1800757651700711424 |