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Microbial dynamics and flagellate grazing during transition to winter in Lakes Hoare and Bonney, Antarctica

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Microbial dynamics and flagellate grazing during transition to winter in Lakes Hoare and Bonney, Antarctica. / Thurman, Jill; Parry, Jacqueline; Hill, Phil et al.
In: FEMS Microbiology Ecology, Vol. 82, No. 2, 11.2012, p. 449-458.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Thurman, J, Parry, J, Hill, P, Priscu, J, Vick, T, Chiuchiolo, A & Laybourn-Parry, J 2012, 'Microbial dynamics and flagellate grazing during transition to winter in Lakes Hoare and Bonney, Antarctica', FEMS Microbiology Ecology, vol. 82, no. 2, pp. 449-458. https://doi.org/10.1111/j.1574-6941.2012.01423.x

APA

Thurman, J., Parry, J., Hill, P., Priscu, J., Vick, T., Chiuchiolo, A., & Laybourn-Parry, J. (2012). Microbial dynamics and flagellate grazing during transition to winter in Lakes Hoare and Bonney, Antarctica. FEMS Microbiology Ecology, 82(2), 449-458. https://doi.org/10.1111/j.1574-6941.2012.01423.x

Vancouver

Thurman J, Parry J, Hill P, Priscu J, Vick T, Chiuchiolo A et al. Microbial dynamics and flagellate grazing during transition to winter in Lakes Hoare and Bonney, Antarctica. FEMS Microbiology Ecology. 2012 Nov;82(2):449-458. doi: 10.1111/j.1574-6941.2012.01423.x

Author

Thurman, Jill ; Parry, Jacqueline ; Hill, Phil et al. / Microbial dynamics and flagellate grazing during transition to winter in Lakes Hoare and Bonney, Antarctica. In: FEMS Microbiology Ecology. 2012 ; Vol. 82, No. 2. pp. 449-458.

Bibtex

@article{cbaa25cb4e6c413da0837b99e021c42f,
title = "Microbial dynamics and flagellate grazing during transition to winter in Lakes Hoare and Bonney, Antarctica",
abstract = "The planktonic microbial communities of Lakes Hoare and Bonney were investigated during transition into winter. We hypothesized that the onset of darkness induces changes in the functional role of autotrophic and heterotrophic microplankton.Bacteria decreased in Lake Hoare during March–April, while in Lake Bonney bacterial abundances varied. Heterotrophic nanoflagellates (HNAN), phototrophic nanoflagellates (PNAN) and ciliates showed no marked decline with the onset of winter. PNAN outnumbered HNAN in both lakes. Grazing rates of HNAN in Lake Hoare ranged up to 30.8 bacteria per cell day 1. The HNAN community grazed between 3.74 and 36.6 ng of bacterial carbon day 1. Mixotrophic PNAN had grazing rates up to 15.2 bacteria per cell day 1, and their daily community grazing exceeded bacterial production. In Lake Bonney East, PNAN grazing rates ranged up to 12.48 bacteria per cell day 1 and in Lake Bonney West up to 8.16 bacteria per cell day 1. As in Lake Hoare, the mixotrophic PNAN grazing rates (up to 950 ng C day 1) usually exceeded bacterial production.HNAN grazing rates were generally similar to those in Lake Hoare. As winterencroaches, these lakes move progressively towards heterotrophy andprobably function during the winter, enabling populations to enter the short austral summer with actively growing populations",
keywords = "Antarctic lakes, nanoflagellates, mixotrophy, ciliates, grazing impact",
author = "Jill Thurman and Jacqueline Parry and Phil Hill and John Priscu and Trista Vick and Amy Chiuchiolo and Johanna Laybourn-Parry",
year = "2012",
month = nov,
doi = "10.1111/j.1574-6941.2012.01423.x",
language = "English",
volume = "82",
pages = "449--458",
journal = "FEMS Microbiology Ecology",
issn = "0168-6496",
publisher = "Wiley-Blackwell",
number = "2",

}

RIS

TY - JOUR

T1 - Microbial dynamics and flagellate grazing during transition to winter in Lakes Hoare and Bonney, Antarctica

AU - Thurman, Jill

AU - Parry, Jacqueline

AU - Hill, Phil

AU - Priscu, John

AU - Vick, Trista

AU - Chiuchiolo, Amy

AU - Laybourn-Parry, Johanna

PY - 2012/11

Y1 - 2012/11

N2 - The planktonic microbial communities of Lakes Hoare and Bonney were investigated during transition into winter. We hypothesized that the onset of darkness induces changes in the functional role of autotrophic and heterotrophic microplankton.Bacteria decreased in Lake Hoare during March–April, while in Lake Bonney bacterial abundances varied. Heterotrophic nanoflagellates (HNAN), phototrophic nanoflagellates (PNAN) and ciliates showed no marked decline with the onset of winter. PNAN outnumbered HNAN in both lakes. Grazing rates of HNAN in Lake Hoare ranged up to 30.8 bacteria per cell day 1. The HNAN community grazed between 3.74 and 36.6 ng of bacterial carbon day 1. Mixotrophic PNAN had grazing rates up to 15.2 bacteria per cell day 1, and their daily community grazing exceeded bacterial production. In Lake Bonney East, PNAN grazing rates ranged up to 12.48 bacteria per cell day 1 and in Lake Bonney West up to 8.16 bacteria per cell day 1. As in Lake Hoare, the mixotrophic PNAN grazing rates (up to 950 ng C day 1) usually exceeded bacterial production.HNAN grazing rates were generally similar to those in Lake Hoare. As winterencroaches, these lakes move progressively towards heterotrophy andprobably function during the winter, enabling populations to enter the short austral summer with actively growing populations

AB - The planktonic microbial communities of Lakes Hoare and Bonney were investigated during transition into winter. We hypothesized that the onset of darkness induces changes in the functional role of autotrophic and heterotrophic microplankton.Bacteria decreased in Lake Hoare during March–April, while in Lake Bonney bacterial abundances varied. Heterotrophic nanoflagellates (HNAN), phototrophic nanoflagellates (PNAN) and ciliates showed no marked decline with the onset of winter. PNAN outnumbered HNAN in both lakes. Grazing rates of HNAN in Lake Hoare ranged up to 30.8 bacteria per cell day 1. The HNAN community grazed between 3.74 and 36.6 ng of bacterial carbon day 1. Mixotrophic PNAN had grazing rates up to 15.2 bacteria per cell day 1, and their daily community grazing exceeded bacterial production. In Lake Bonney East, PNAN grazing rates ranged up to 12.48 bacteria per cell day 1 and in Lake Bonney West up to 8.16 bacteria per cell day 1. As in Lake Hoare, the mixotrophic PNAN grazing rates (up to 950 ng C day 1) usually exceeded bacterial production.HNAN grazing rates were generally similar to those in Lake Hoare. As winterencroaches, these lakes move progressively towards heterotrophy andprobably function during the winter, enabling populations to enter the short austral summer with actively growing populations

KW - Antarctic lakes

KW - nanoflagellates

KW - mixotrophy

KW - ciliates

KW - grazing impact

UR - http://www.scopus.com/inward/record.url?scp=84867703658&partnerID=8YFLogxK

U2 - 10.1111/j.1574-6941.2012.01423.x

DO - 10.1111/j.1574-6941.2012.01423.x

M3 - Journal article

AN - SCOPUS:84867703658

VL - 82

SP - 449

EP - 458

JO - FEMS Microbiology Ecology

JF - FEMS Microbiology Ecology

SN - 0168-6496

IS - 2

ER -