The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls
Plankton abundance and biomass were investigated in five lakes of the McMurdo Dry Valleys, Antarctica: Lakes Bonney, Fryxell, Joyce, Hoare and Miers. Despite plankton communities being dominated by organisms <100 n in length, there were striking differences between the lakes, including large vari...
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ftunivtasecite:oai:ecite.utas.edu.au:48997 2023-05-15T13:40:51+02:00 The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls Roberts, EC Priscu, JC Wolf, C Lyons, WB Laybourn-Parry, J 2004 https://doi.org/10.1007/s00300-003-0582-0 http://ecite.utas.edu.au/48997 en eng Springer http://dx.doi.org/10.1007/s00300-003-0582-0 Roberts, EC and Priscu, JC and Wolf, C and Lyons, WB and Laybourn-Parry, J, The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls, Polar Biology, 27, (4) pp. 238-250. ISSN 0722-4060 (2004) [Refereed Article] http://ecite.utas.edu.au/48997 Biological Sciences Microbiology Microbial Ecology Refereed Article PeerReviewed 2004 ftunivtasecite https://doi.org/10.1007/s00300-003-0582-0 2019-12-13T21:23:45Z Plankton abundance and biomass were investigated in five lakes of the McMurdo Dry Valleys, Antarctica: Lakes Bonney, Fryxell, Joyce, Hoare and Miers. Despite plankton communities being dominated by organisms <100 n in length, there were striking differences between the lakes, including large variations in plankton vertical distribution and differences in total plankton biomass. Bacterial biomass was highest in the anoxic monimolimnia of the meromictic lakes, reaching 191 g C l-1 in Lake Fryxell. Photosynthetic nanoflagellates dominated phytoplankton in the five lakes studied. Highest chlorophyll a concentrations were recorded at the chemocline of Lake Fryxell (21 g chl a l-1). Heterotrophic nanoflagellate concentrations were low, ranging from 2 cells ml-1 in Hoare to 237 cells ml-1 in Bonney. By Antarctic standards, cillates were relatively successful in terms of biomass and diversity in Lakes Fryxell and Hoare. In contrast, Lake Miers possessed extremely low ciliate abundance (<0.04 cells ml-1). On both sampling occasions, copepod nauplii were observed in Lake Joyce. This is the first recording of crustacean zooplankton within the McMurdo Dry Valley Lakes. Because the foodwebs of these lakes are structured by "bottom-up" forces, differences in plankton distributions could be related to the physicochemical characteristics of each lake. The effect of lake evolution (legacy) and present-day climate change on planktonic dynamics is discussed. Springer-Verlag 2003. Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Dry Valleys Polar Biology eCite UTAS (University of Tasmania) Antarctic Bonney ENVELOPE(162.417,162.417,-77.717,-77.717) Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Hoare ENVELOPE(162.850,162.850,-77.633,-77.633) Lake Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Lake Joyce ENVELOPE(168.200,168.200,-77.467,-77.467) Lake Miers ENVELOPE(-60.450,-60.450,-62.717,-62.717) McMurdo Dry Valleys Miers ENVELOPE(163.850,163.850,-78.100,-78.100) Polar Biology 27 4 238 249 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Microbiology Microbial Ecology |
spellingShingle |
Biological Sciences Microbiology Microbial Ecology Roberts, EC Priscu, JC Wolf, C Lyons, WB Laybourn-Parry, J The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls |
topic_facet |
Biological Sciences Microbiology Microbial Ecology |
description |
Plankton abundance and biomass were investigated in five lakes of the McMurdo Dry Valleys, Antarctica: Lakes Bonney, Fryxell, Joyce, Hoare and Miers. Despite plankton communities being dominated by organisms <100 n in length, there were striking differences between the lakes, including large variations in plankton vertical distribution and differences in total plankton biomass. Bacterial biomass was highest in the anoxic monimolimnia of the meromictic lakes, reaching 191 g C l-1 in Lake Fryxell. Photosynthetic nanoflagellates dominated phytoplankton in the five lakes studied. Highest chlorophyll a concentrations were recorded at the chemocline of Lake Fryxell (21 g chl a l-1). Heterotrophic nanoflagellate concentrations were low, ranging from 2 cells ml-1 in Hoare to 237 cells ml-1 in Bonney. By Antarctic standards, cillates were relatively successful in terms of biomass and diversity in Lakes Fryxell and Hoare. In contrast, Lake Miers possessed extremely low ciliate abundance (<0.04 cells ml-1). On both sampling occasions, copepod nauplii were observed in Lake Joyce. This is the first recording of crustacean zooplankton within the McMurdo Dry Valley Lakes. Because the foodwebs of these lakes are structured by "bottom-up" forces, differences in plankton distributions could be related to the physicochemical characteristics of each lake. The effect of lake evolution (legacy) and present-day climate change on planktonic dynamics is discussed. Springer-Verlag 2003. |
format |
Article in Journal/Newspaper |
author |
Roberts, EC Priscu, JC Wolf, C Lyons, WB Laybourn-Parry, J |
author_facet |
Roberts, EC Priscu, JC Wolf, C Lyons, WB Laybourn-Parry, J |
author_sort |
Roberts, EC |
title |
The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls |
title_short |
The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls |
title_full |
The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls |
title_fullStr |
The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls |
title_full_unstemmed |
The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls |
title_sort |
distribution of microplankton in the mcmurdo dry valley lakes, antarctica: response to ecosystem legacy or present-day climatic controls |
publisher |
Springer |
publishDate |
2004 |
url |
https://doi.org/10.1007/s00300-003-0582-0 http://ecite.utas.edu.au/48997 |
long_lat |
ENVELOPE(162.417,162.417,-77.717,-77.717) ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(162.850,162.850,-77.633,-77.633) ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(168.200,168.200,-77.467,-77.467) ENVELOPE(-60.450,-60.450,-62.717,-62.717) ENVELOPE(163.850,163.850,-78.100,-78.100) |
geographic |
Antarctic Bonney Fryxell Hoare Lake Fryxell Lake Joyce Lake Miers McMurdo Dry Valleys Miers |
geographic_facet |
Antarctic Bonney Fryxell Hoare Lake Fryxell Lake Joyce Lake Miers McMurdo Dry Valleys Miers |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys Polar Biology |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys Polar Biology |
op_relation |
http://dx.doi.org/10.1007/s00300-003-0582-0 Roberts, EC and Priscu, JC and Wolf, C and Lyons, WB and Laybourn-Parry, J, The distribution of microplankton in the McMurdo Dry valley lakes, Antarctica: response to ecosystem legacy or present-day climatic controls, Polar Biology, 27, (4) pp. 238-250. ISSN 0722-4060 (2004) [Refereed Article] http://ecite.utas.edu.au/48997 |
op_doi |
https://doi.org/10.1007/s00300-003-0582-0 |
container_title |
Polar Biology |
container_volume |
27 |
container_issue |
4 |
container_start_page |
238 |
op_container_end_page |
249 |
_version_ |
1766141307773779968 |