“We lead the way “It’s true.for Our salmon globally water industry is growing.” quality monitoring.”
Ollie
Steve Witkowski
Environmental Officer (Marine Scientist) Heidi Hansen Sustainability & Certification Manager
Q: A:
Lucy
How does Tassal lead the way in the industry globally for water quality monitoring?
See page 18 for Broadscale Monitoring information an d a map of testing sites.
The Aquaculture Stewardship Council (ASC) standards present a rigorous template for global best practice and address the preservation of water resources and water quality. In order to maintain our ASC certification, we use sophisticated modelling and monitoring programs to understand changes in near field and far field water quality as a result of our farming operations and invest heavily into research in this area.
One metre below surface
One metre below the surface, we measure: • Total Phosphorus (P) • Ammonium (NH4) • Total Nitrogen (N) • Phosphate (PO4) • Temperature • Dissolved Oxygen (DO)
• Silicate (SiO4) • Nitrate (NO3) • Salinity
In the middle at five metres, we measure: • Temperature • Dissolved Oxygen (DO) • Salinity
One metre above the sea floor
On the sea floor 14
WINTER 2018 CURRENT
One metre above the bottom, we measure: • Total Phosphorus (P) • Ammonium (NH4) • Total Nitrogen (N) • Phosphate (PO4) • Temperature • Dissolved Oxygen (DO)
On the sea floor, we measure: • Infauna • Particle size • Redox • Sulphides
• Silicate (SiO4) • Nitrate (NO3) • Salinity
• Total Organic Carbon (TOC)
12 metre integrated algal sample
What do we test the water for?
