Tropical seagrass meadows modify seawater carbon chemistry

Highly productive tropical seagrasses often live adjacent to or among coral reefs and utilize large amounts of inorganic carbon. In this study, the effect of seagrass productivity on seawater carbonate chemistry and coral calcification was modelled on the basis of an analysis of published data. \nPublished data (11 studies, 64 records) reveal that seagrass meadows in the Indo-Pacific have an 83% chance of being net autotrophic, resulting in an average net sink of 155 gC m The \ncapacities for seagrass productivity were analysed using an empirical model to examine the effect on seawater carbonate chemistry. Our analyses indicate that increases in pH of up to 0.38 units, and arag increases of 2.9 are possible in the presence of seagrass meadows (compared to their absence) with the precise values of these increases dependent on water residence time (tidal flushing) and water depth. In shallow water reef environments, Scleractinian coral calcification downstream of seagrass has the potential to be 18% greater than in an environment without seagrass. If this potential benefit to reef calcifiers is supported by further study it offers a potential tool in marine park management at a local scale. The applicability of this will depend upon local physical conditions as well as the spatial configuration of habitats, and the factors that influence their productivity. This novel study suggests that, in addition to their importance to fisheries, sediment stabilization and primary production, seagrass meadows may enhance coral reef resilience to future ocean acidification

Biology · Carbonate · Coral · Coral reef · Ecosystem · Environmental issues with coral reefs · Ocean Acidification · Productivity · Reef · Seagrass · Seawater · Chemistry · Coral and Marine Ecosystems Studies · Environmental Science · Marine and coastal plant biology · Ocean Acidification Effects and Responses · Ecology · Geology · Oceanography

• Global Oceans Governance

  Open Access•Lisa M Campbell, Noella J Gray et al.•Annual Review of Environment and…•2016

  Incluir item

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  Open Access•Kirsten Grorud‐Colvert, Jenna Sullivan‐Stack et al.•Science•2021

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• Marine reserves can mitigate and promote adaptation to climate change

  Open Access•Callum M Roberts, Bethan C O’Leary et al.•Proceedings of the National…•2017

  Incluir item

• Valuing and Evaluating Marine Ecosystem Services

  Open Access•Julian Clifton, Leanne C Cullen-Unsworth et al.•Environment and Society•2014

  Incluir item

• Optimising reef-scale CO 2 removal by seaweed to buffer ocean acidification

  Open Access•Mathieu Mongin, Mark E Baird et al.•Environmental Research Letters•2016

  Incluir item

• Human appropriation of net primary production (HANPP) in seagrass ecosystem

  Open Access•Nurul Dhewani Mirah Sjafrie, Luky Adrianto et al.•Environment Development and…•2018

  Incluir item

• Climate Change, Human Impacts, and the Resilience of Coral Reefs

  Open Access•Thomas P Hughes, Andrew H Baird et al.•Science•2003

  Incluir item

• Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms

  Open Access•James C Orr, Victoria J Fabry et al.•Nature•2005

  Incluir item

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