Climate change could spell end for paua

New Zealand’s most famous shellfish, the paua, is under threat with climate change.

Scientists at the National Institute of Water & Atmospheric Research and the University of Otago say increased seawater temperatures and ocean acidification resulting in lower pH levels will affect the thickness of paua shells, possibly making them less resistant to waves and predators.

By growing young paua in seawater with different combinations of temperatures and pH levels, they found while paua grew well in warmer water and lowered pH, the outer layer of their shell gets etched by seawater.

Professor Abby Smith from the University of Otago’s Department of Marine Science says while all shellfish are at risk from marine climate change, paua are unusual because the shell is also a valuable part of the harvest, not just the flesh.

Waatea News, 4 October 2019. Article.

0 Responses to “Climate change could spell end for paua”



  1. Leave a Comment

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.




Subscribe to the RSS feed

Powered by FeedBurner

Follow AnneMarin on Twitter

Blog Stats

  • 1,334,641 hits

OA-ICC HIGHLIGHTS

Ocean acidification in the IPCC AR5 WG II

OUP book