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The effects of Temperature on the Photosynthetic Parameters and Recovery of Two Temperate Benthic Microalgae, Amphora CF. Coffeaeformis and Cocconeis CF. Sublittoralis (Bacillariophyceae)
Citation
Salleh, S and McMinn, A, The effects of Temperature on the Photosynthetic Parameters and Recovery of Two Temperate Benthic Microalgae, Amphora CF. Coffeaeformis and Cocconeis CF. Sublittoralis (Bacillariophyceae), Journal of Phycology, 47, (6) pp. 1413-1424. ISSN 0022-3646 (2011) [Refereed Article]
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Copyright Statement
The definitive published version is available online at: http://www3.interscience.wiley.com/
DOI: doi:10.1111/j.1529-8817.2011.01079.x
Abstract
Temperature and irradiance are the most important
factors affecting marine benthic microalgal
photosynthetic rates in temperate intertidal areas.
Two temperate benthic diatoms species, Amphora
cf. coffeaeformis (C. Agardh) Ku¨tz. and Cocconeis cf.
sublittoralis Hendey, were investigated to determine
how their photosynthesis responded to temperatures
ranging from 58C to 508C after short-term exposure
(1 h) to a range of irradiance levels (0, 500, and
1,100 lmol photons Ζ m)2 Ζ s)1). Significant differences
were observed between the temperature
responses of maximum relative electron transport
rate (rETRmax), photoacclimation index (Ek), photosynthetic
efficiency (a), and effective quantum
yield (DF ⁄ Fm) in both species. A. coffeaeformis had a
greater tolerance to higher temperatures than C. sublittoralis,
with nonphotochemical quenching (NPQ)
activated at temperatures of 458C and 508C. C. sublittoralis,
however, demonstrated a more rapid rate
of recovery at ambient temperatures. Temperatures
between 108C and 208C were determined to be optimal
for photosynthesis for both species. High temperatures
and irradiances caused a greater decrease
in DF ⁄ Fm values. These results suggest that the
effects of temperature are species specific and that
short-term exposure to adverse temperature slows
the recovery process, which subsequently leads to
photoinhibition.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | benthic microalgae; photosynthesis; recovery; temperate; temperature |
| Research Division: | Biological Sciences |
| Research Group: | Ecology |
| Research Field: | Marine and estuarine ecology (incl. marine ichthyology) |
| Objective Division: | Environmental Management |
| Objective Group: | Management of Antarctic and Southern Ocean environments |
| Objective Field: | Biodiversity in Antarctic and Southern Ocean environments |
| UTAS Author: | Salleh, S (Ms Sazlina Salleh) |
| UTAS Author: | McMinn, A (Professor Andrew McMinn) |
| ID Code: | 75593 |
| Year Published: | 2011 |
| Funding Support: | Australian Research Council (DP0344067) |
| Web of Science® Times Cited: | 25 |
| Deposited By: | IMAS Research and Education Centre |
| Deposited On: | 2012-02-06 |
| Last Modified: | 2014-07-11 |
| Downloads: | 0 |
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