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Production of viruses during a spring phytoplankton bloom in the South Pacific Ocean near of New Zealand
Citation
Matteson, AR and Loar, SN and Pickmere, S and DeBruyn, JM and Ellwood, MJ and Boyd, PW and Hutchins, DA and Wihelm, SW, Production of viruses during a spring phytoplankton bloom in the South Pacific Ocean near of New Zealand, FEMS Microbiology Ecology, 79, (3) pp. 709-719. ISSN 0168-6496 (2012) [Refereed Article]
Copyright Statement
Copyright 2014 Elsevier
DOI: doi:10.1111/j.1574-6941.2011.01251.x
Abstract
Lagrangian studies of virus activity in pelagic environments over extended temporal
scales are rare. To address this, viruses and bacteria were examined during
the course of a natural phytoplankton bloom in the pelagic South Pacific
Ocean east of New Zealand. Daily samples were collected in a mesoscale eddy
from year days 263–278 (September 19th–October 4th, 2008). The productive
bloom transitioned from a diatom to a pico- and nanoplankton-dominated
system, resulting in chlorophyll a concentrations up to 2.43 lg L-1. Virus
abundances fluctuated c. 10-fold (1.8 x 1010–1.3 x 1011 L-1) over 16 days.
The production rates of virus particles were high compared with those reported
in other marine systems, ranging from 1.4 x 1010 to 2.1 x 1011 L-1 day-1.
Our observations suggest viruses contributed significantly to the mortality of
bacteria throughout the bloom, with 19–216% of the bacterial standing stock
being lysed daily. This mortality released nutrient elements (N, Fe) that likely
helped sustain the bloom through the sampling period. Parametric analyses
found significant correlations with both biotic (e.g. potential host abundances)
and abiotic parameters (e.g. nutrient concentrations, temperature). These
observations demonstrate that viruses may be critical in the extended maintenance
of regeneration-driven biological production.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | marine microbial communities, marine bacteria, viral production, biogeochemistry, nutrient cycling, phytoplankton bloom dynamics |
| Research Division: | Biological Sciences |
| Research Group: | Ecology |
| Research Field: | Marine and estuarine ecology (incl. marine ichthyology) |
| Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
| Objective Group: | Adaptation to climate change |
| Objective Field: | Climate change adaptation measures (excl. ecosystem) |
| UTAS Author: | Boyd, PW (Professor Philip Boyd) |
| ID Code: | 95605 |
| Year Published: | 2012 |
| Web of Science® Times Cited: | 20 |
| Deposited By: | IMAS Research and Education Centre |
| Deposited On: | 2014-10-06 |
| Last Modified: | 2017-11-02 |
| Downloads: | 0 |
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