Seasonal changes in phytoplankton on the north-eastern shelf of Kangaroo Island (South Australia) in 2012 and 2013

• Autorzy: Balzano S. , Ellis A. V. , Le Lan C. , Leterme S. C.

Identyfikatory

DOI

10.1016/j.oceano.2015.04.003

• Języki publikacji: EN

Abstrakty

EN

This work investigates for the first time the seasonal changes in phytoplankton, bacteria, and photosynthetic picoplankton as well as nutrient concentrations on the North-western shelf of Kangaroo Island, South Australia. Seawater samples were collected off Penneshaw desalination plant, where waters from the Investigator Straight, Gulf Saint Vincent and Backstairs Passage meet. Low nutrient values were measured throughout the period of study (July 2012–July 2013) suggesting the occurrence of oligotrophic conditions on the region. The phytoplankton community was dominated by Bacillariophyceae, Dinoflagellata and Cryptophyta. Prochlorococcus Cyanobacteria prevailed among picophytoplankton during most of the period of study (July 2012–July 2013). Previous studies indicate that oligotrophic environments are indeed typically dominated by Prochlorococcus. The dominant species found here seem either adapted to grow under low nutrient concentrations, possessing high surface/volume ratios, or have a mixotrophic behaviour allowing them to complement photosynthesis with predation. This study provides base knowledge on the microbial communities north of Kangaroo Island that is needed to sustain the ecosystem and associated economic activities in the future.

Słowa kluczowe

EN

bacteria; picoplankton; phytoplankton; Oligotrophic conditions; Penneshaw desalination plant

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 2015
• Tom: No. 57 (3)
• Strony: 251--262
• Opis fizyczny: Bibliogr. 76 poz., tab., wykr., mapy

Twórcy

autor

Balzano S.

• School of Biological Sciences, Flinders University, Adelaide, Australia

autor

Ellis A. V.

• Flinders Centre for Nanoscale Science and Technology, School of Chemical and Physical Sciences, Flinders University, Adelaide, Australia

autor

Le Lan C.

• School of Biological Sciences, Flinders University, Adelaide, Australia

autor

Leterme S. C.

• School of Biological Sciences, Flinders University, Adelaide, Australia

Bibliografia

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