However, C org burial rate showed different trends along the sediment depth profile and across periods, tending to decrease from 12 cm depth towards 7 cm depth (comprising the period 1917—1951), shifted to an increasing trend between 7 cm depth and 3 cm depth (comprising the period between 1951 and 1978) and shifted to a decreasing trend again from 3 cm towards sediment surface (i.e., from 1978 towards present).
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Coastal engineering infrastructure impacts Blue Carbon habitats distribution and ecosystem functions.
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In addition, before the building of the bridge, SAR ranged from 0.1 cm·y −1 to 0.2 cm y −1 without showing a clear trend whereas a clear decreasing trend is shown for the sediment accumulated since the bridge was built towards present (Fig. 6 a).
SAR dropped from an average of 0.14 ± 0.02 cm y −1 to 0.04 ± 0.01 cm y −1 after the bridge construction and shows a negative trend since then.