Calcium carbonate alters the functional response of coastal sediments to eutrophication-induced acidification

Coastal ocean acidification research is dominated by laboratory-based studies that cannot necessarily predict real-world ecosystem response given its complexity. We enriched coastal sediments with increasing quantities of organic matter in the field to identify the effects of eutrophication-induced acidification on benthic structure and function, and assess whether biogenic calcium carbonate (CaCO3) would alter the response. Along the eutrophication gradient we observed declines in macrofauna biodiversity and impaired benthic net primary productivity and sediment nutrient cycling. CaCO3 addition did not alter the macrofauna community response, but significantly dampened negative effects on function (e.g. net autotrophy occurred at higher levels of organic matter enrichment in +CaCO3 treatments than −CaCO3 (1400 vs 950 g dw m−2)). By identifying the links between eutrophication, sediment biogeochemistry and benthic ecosystem structure and function in situ, our study represents a crucial step forward in understanding the ecological effects of coastal acidification and the role of biogenic CaCO3 in moderating responses.

Drylie T. P., Needham H. R., Lohrer A. M., Hartland A. & Pilditch C. A., 2019. Calcium carbonate alters the functional response of coastal sediments to eutrophication-induced acidification. Scientific Reports 9: 12012. doi: 10.1038/s41598-019-48549-8. Article.

2 Responses to “Calcium carbonate alters the functional response of coastal sediments to eutrophication-induced acidification”


  1. 1 Siti Nur Amalia 9 September 2019 at 14:45

    where can I read the full article about this research?


Leave a Reply




Subscribe to the RSS feed

Follow AnneMarin on Twitter

Blog Stats

  • 1,410,457 hits

OA-ICC HIGHLIGHTS

Ocean acidification in the IPCC AR5 WG II

OUP book


%d bloggers like this: