Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes
This study is the first published survey of diatom-environment relationships Oil sub-Antarctic Macquarie Island. Fifty-eight sites in 50 coastal and inland lakes were sampled for benthic diatoms and water chemistry. 208 diatom species from 34 genera were identified. Multivariate analyses indicated t...
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Language: | English |
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Cambridge University Press
2009
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Online Access: | http://nora.nerc.ac.uk/id/eprint/11201/ https://nora.nerc.ac.uk/id/eprint/11201/1/download.pdf |
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ftnerc:oai:nora.nerc.ac.uk:11201 2023-05-15T13:45:10+02:00 Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes Saunders, Krystyna M. Hodgson, Dominic A. McMinn, Andrew 2009 text http://nora.nerc.ac.uk/id/eprint/11201/ https://nora.nerc.ac.uk/id/eprint/11201/1/download.pdf en eng Cambridge University Press https://nora.nerc.ac.uk/id/eprint/11201/1/download.pdf Saunders, Krystyna M.; Hodgson, Dominic A. orcid:0000-0002-3841-3746 McMinn, Andrew. 2009 Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes. Antarctic Science, 21 (1). 35-49. https://doi.org/10.1017/S0954102008001442 <https://doi.org/10.1017/S0954102008001442> Meteorology and Climatology Ecology and Environment Earth Sciences Hydrology Publication - Article PeerReviewed 2009 ftnerc https://doi.org/10.1017/S0954102008001442 2023-02-04T19:27:12Z This study is the first published survey of diatom-environment relationships Oil sub-Antarctic Macquarie Island. Fifty-eight sites in 50 coastal and inland lakes were sampled for benthic diatoms and water chemistry. 208 diatom species from 34 genera were identified. Multivariate analyses indicated that the lakes were distributed along nutrient and conductivity gradients. Conductivity, pH, phosphate (SRP), silicate and temperature all explained independent portions of the variance in the diatom data. Transfer functions provide a quantitative basis for palaeolimnological studies of past climate change and human impacts, and can be used to establish baseline conditions for assessing the impacts of recent climate change and the introduction of non-native plants and animals. Statistically robust diatom transfer functions for conductivity, phosphate and silicate were developed, while pH and temperature transfer functions performed less well. The lower predictive abilities of the pH and temperature transfer functions probably reflect the broad pH tolerance range of diatoms on Macquarie Island and uneven distribution of lakes along the temperature gradient. This study contributes to understanding the current ecological distribution of Macquarie Island diatoms and provides transfer functions that will be applied in studies of diatoms in lake sediment cores to quantitatively reconstruct past environmental changes. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Macquarie Island Natural Environment Research Council: NERC Open Research Archive Antarctic Island Lakes ENVELOPE(-128.226,-128.226,62.344,62.344) Antarctic Science 21 1 35 49 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Meteorology and Climatology Ecology and Environment Earth Sciences Hydrology |
spellingShingle |
Meteorology and Climatology Ecology and Environment Earth Sciences Hydrology Saunders, Krystyna M. Hodgson, Dominic A. McMinn, Andrew Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes |
topic_facet |
Meteorology and Climatology Ecology and Environment Earth Sciences Hydrology |
description |
This study is the first published survey of diatom-environment relationships Oil sub-Antarctic Macquarie Island. Fifty-eight sites in 50 coastal and inland lakes were sampled for benthic diatoms and water chemistry. 208 diatom species from 34 genera were identified. Multivariate analyses indicated that the lakes were distributed along nutrient and conductivity gradients. Conductivity, pH, phosphate (SRP), silicate and temperature all explained independent portions of the variance in the diatom data. Transfer functions provide a quantitative basis for palaeolimnological studies of past climate change and human impacts, and can be used to establish baseline conditions for assessing the impacts of recent climate change and the introduction of non-native plants and animals. Statistically robust diatom transfer functions for conductivity, phosphate and silicate were developed, while pH and temperature transfer functions performed less well. The lower predictive abilities of the pH and temperature transfer functions probably reflect the broad pH tolerance range of diatoms on Macquarie Island and uneven distribution of lakes along the temperature gradient. This study contributes to understanding the current ecological distribution of Macquarie Island diatoms and provides transfer functions that will be applied in studies of diatoms in lake sediment cores to quantitatively reconstruct past environmental changes. |
format |
Article in Journal/Newspaper |
author |
Saunders, Krystyna M. Hodgson, Dominic A. McMinn, Andrew |
author_facet |
Saunders, Krystyna M. Hodgson, Dominic A. McMinn, Andrew |
author_sort |
Saunders, Krystyna M. |
title |
Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes |
title_short |
Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes |
title_full |
Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes |
title_fullStr |
Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes |
title_full_unstemmed |
Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes |
title_sort |
quantitative relationships between benthic diatom assemblages and water chemistry in macquarie island lakes and their potential for reconstructing past environmental changes |
publisher |
Cambridge University Press |
publishDate |
2009 |
url |
http://nora.nerc.ac.uk/id/eprint/11201/ https://nora.nerc.ac.uk/id/eprint/11201/1/download.pdf |
long_lat |
ENVELOPE(-128.226,-128.226,62.344,62.344) |
geographic |
Antarctic Island Lakes |
geographic_facet |
Antarctic Island Lakes |
genre |
Antarc* Antarctic Antarctic Science Macquarie Island |
genre_facet |
Antarc* Antarctic Antarctic Science Macquarie Island |
op_relation |
https://nora.nerc.ac.uk/id/eprint/11201/1/download.pdf Saunders, Krystyna M.; Hodgson, Dominic A. orcid:0000-0002-3841-3746 McMinn, Andrew. 2009 Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes. Antarctic Science, 21 (1). 35-49. https://doi.org/10.1017/S0954102008001442 <https://doi.org/10.1017/S0954102008001442> |
op_doi |
https://doi.org/10.1017/S0954102008001442 |
container_title |
Antarctic Science |
container_volume |
21 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
49 |
_version_ |
1766214433466482688 |