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| one publication added to basket [210878] |
Influence of giant kelp beds (Macrocystis pyrifera) on diel cycles of pCO2 and DIC in the Sub-Antarctic coastal area
Delille, B.; Borges, A.V.; Delille, D. (2009). Influence of giant kelp beds (Macrocystis pyrifera) on diel cycles of pCO2 and DIC in the Sub-Antarctic coastal area. Est., Coast. and Shelf Sci. 81(1): 114-122. dx.doi.org/10.1016/j.ecss.2008.10.004
In: Estuarine, Coastal and Shelf Science. Academic Press: London; New York. ISSN 0272-7714; e-ISSN 1096-0015
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| Trefwoorden |
Macrocystis pyrifera (Linnaeus) C.Agardh, 1820 [WoRMS]
Marien/Kust |
| Author keywords |
primary production; carbon dioxide; kelp; antarctic zone; kerguelen; |
| Auteurs | | Top |
- Delille, B.
- Borges, A.V.
- Delille, D.
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| Abstract |
The partial pressure of CO2 (pCO2) and dissolved inorganic carbon (DIC) were monitored in shallow coastal waters located inside and outside giant kelp beds (Macrocystis pyrifera) located in the Kerguelen Archipelago (Southern Ocean). Photosynthesis and respiration by microplankton and kelp lead to marked pCO2 and DIC diel cycles. Daily variations of pCO2 and DIC are significant in the spring and summer, but absent in the winter, reflecting the seasonal cycle of biological activity in the kelp beds. If the kelp beds seem to favour the onset of phytoplankton blooms, most of the primary production inside the kelp beds is due to the kelp itself The primary production of Macrocystis kelp beds in the Sub-Antarctic high-nutrient, low-chlorophyll (HNLC) waters off the Kerguelen Archipelago is elevated and closely linked to light availability. This production is significant from October to March and reaches its climax in December at the solar radiation maximum. |
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