CoastalAcidification

What is the global community doing to address ocean acidification? I am glad you asked. @oceanfdn @oaicc_project @goa_on @goa_ne @CARIM_NZ @SustDev @ThomsonFiji @FriendsofOcean @ocean_climate @FPA2

As we move into the UN Decade of Ocean Science for Sustainable Development, what is the global community doing to address the important issue of ocean acidification? Partners of the Global OA Observing Network (@goa_on ) tell us 👇 @CARIM_NZ

NIWA is proud to be part of the global community of 700 scientists from 100 nations studying the effects of #acidification on our oceans, coastal communities & seafood industries. This video describes how we're addressing the problem & includes research from @niwa_nz & @CARIM_NZ

Congratulations to @CARIM_NZ team on the work over the last 4 years. Led by Cliff Law @niwa with researchers from @AucklandUni @otago @Cawthron_NZ. A true multi institution and multi disciplinary project.

@CARIM_NZ @VicMetcalf_NZ talking about all the outputs and outreach activities. As it winds up. Although many more papers to come in the future as the science is only just finishing. Well done team and collaborators and media, especially @VeronikaMeduna

Norman Ragg from @Cawthron_NZ shares the complexity of the greenshell mussel #oceanacidification work they have been doing, including trans generational effects on larval resilience

Vonda though noted that caution is required in generalising results from these experiments across all locations

BUT there was poor spawning success of Pāua raised in lower pH water and thus was due to a crappy outside of the eggs they produced. Egg quality is important

Vonda Cummings @niwa_nz gave us some good and bad news about #Pāua under #oceanacidification and #warming seas. Her 18 month experiments showed adult Pāua are resistant to decreased pH (all survived, growth was largely ok, condition unchanged, breathed ok, gonads developed etc)

CCA are interesting because due to their photosynthesis they create a boundary layer around them with altered pH compared to the surrounding water. Miles found Pāua settlement decreases under #oceanacidification but this is due to Pāua larvae carryover effects.

Miles Lamare @otago discussing #oceanacidification effects on crustose coralline algae - they are essential for baby Pāua settlement on rocks.

@AbbyOtago Excellent - glad it’s worthwhile Abby

I am really enjoying this morning’s work. Dr Vonda Cummings from NIWA. @CARIM_NZ

We also found lower DMSP in the future scenarios - this could impact foraging. We also found that warming might impact on the food quality values of phytoplankton.

However our work showed changes in the size of the phytoplankton present with warmer temp + lower pH leading to dominance of smaller #plankton.

“#phytoplankton are the grass of the ocean & every second breath we take comes from the oxygen they produce” - Cliff Law @niwa_nz #oceanacidification #climatechange

Hearing about how pāua grow and how acidification might affect them, from Prof Miles Lamare. @CARIM_NZ

ROMS Biogeochemical Modelling developed by Helen Macdonald of the Hauraki Gulf Firth of Thames to look at the influence of different factors on the #oa system. Opportunity to test management scenarios. @niwa_nz @CARIM_NZ

@AllyMarie5420 You can also follow @CARIM_NZ about coast OA in NZ.