Coral reef sediment dissolution in a changing ocean: insights from a temporal field study

Calcium carbonate sediments form an essential part of coral reefs yet have often been overlooked when studying the effects of future ocean acidification (OA). This original field-based research aims to assess the temporal variability of organic and inorganic sediment metabolism under ambient and elevated pCO2. OA caused a shift from net precipitation to net dissolution, but the sensitivity to OA varied seasonally, depending on interactions with temperature and benthic productivity. A slack-water approach of net ecosystem calcification revealed that sediments can play an important role in carbonate budgets, particularly at night, and become increasingly important as the oceans continue acidifying.

Stoltenberg L., 2020. Coral reef sediment dissolution in a changing ocean: insights from a temporal field study. PhD thesis, Southern Cross University, 177 p. Thesis.

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