"GMOs in the CMA could threaten the economic sustainability of a wide range of activities that benefit from having GE-free status. This includes organic and non-organic primary producers in the Northland region, including oyster farmers, and any growers who collect seaweed from the coastline for fertiliser.
"Organic certification standards prohibit the use of any input containing GMO material. A certified organic farm could be contaminated by GMOs in the CMA by using seaweed harvested from the coastline.
"The composting of seaweed is a popular form of natural fertiliser for crops for many organic farmers. Any GE contamination from seaweed would mean having to stop harvesting seaweed for fertiliser use, or otherwise risk losing their organic certification.
"Aquaculture is a growing industry in New Zealand, with exports to nearly 80 countries, and our seafood is regarded as some of the best in the world. Markets around the world don't want seafood products that are contaminated with GMOs," he said.
"New Zealand has already seen several GE field trials breach the conditions of approval.
GMOs in the CMA run additional risks due to the fluid nature of the marine environment, making buffering and containment impossible. We also have to expect that activities in the CMA can cross into terrestrial and freshwater ecosystems."
"The OANZ Organic Market Report 2018 reaffirmed that the growth in New Zealand organic production and exports was very strong, and it made economical and environmental sense to protect and encourage organic primary production, he said.