Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Coral calcification under daily oxygen saturation and pH dynamics reveals the important role of oxygen
Wijgerde, T.; Silva, C.I.F.; Scherders, V.; van Bleijswijk, J.; Osinga, R. (2014). Coral calcification under daily oxygen saturation and pH dynamics reveals the important role of oxygen. Biology Open 3: 489-493. dx.doi.org/10.1242/bio.20147922
In: Biology Open. The Company of Biologists: Cambridge. ISSN 2046-6390; e-ISSN 2046-6390, meer
|   |
| Trefwoord |
Acropora millepora (Ehrenberg, 1834) [WoRMS]
|
| Author keywords |
Acropora millepora, Calcification, Climate change, Oxygen |
| Auteurs | | Top |
- Wijgerde, T.
- Silva, C.I.F., meer
- Scherders, V.
|
- van Bleijswijk, J., meer
- Osinga, R.
|
|
| Abstract |
Coral reefs are essential to many nations, and are currently in global decline. Although climate models predict decreases in seawater pH (~0.3 units) and oxygen saturation (~5 percentage points), these are exceeded by the current daily pH and oxygen fluctuations on many reefs (pH 7.8–8.7 and 27–241% O2 saturation). We investigated the effect of oxygen and pH fluctuations on coral calcification in the laboratory using the model species Acropora millepora. Light calcification rates were greatly enhanced (+178%) by increased seawater pH, but only at normoxia; hyperoxia completely negated this positive effect. Dark calcification rates were significantly inhibited (51–75%) at hypoxia, whereas pH had no effect. Our preliminary results suggest that within the current oxygen and pH range, oxygen has substantial control over coral growth, whereas the role of pH is limited. This has implications for reef formation in this era of rapid climate change, which is accompanied by a decrease in seawater oxygen saturation owing to higher water temperatures and coastal eutrophication. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
