Total alkalinity and total hardness
Alkalinity is an index of the capacity of water to neutralize acidity. Hardness represents the sum of calcium and magnesium concentrations. Both values vary greatly in freshwater sources.
How decomposition of organic matter impacts aquaculture ponds
Organic matter decomposition causes most of the water quality issues in aquaculture ponds. Bacterial populations are the primary organisms of decay in an aquaculture system, including its organic matter.
Running Tide completes ‘first ever’ carbon removal credits in the open ocean
U.S. climate start-up Running Tide has delivered the first-ever carbon removal credits from an open ocean project, funded by Shopify.
Farming algal fuel: Economics challenge process potential
Algae offer advantages over terrestrial plants for biofuel production: short generation cycles and fast population growth. Algal fuel production would spare corn and soybeans for consumption as food for humans.
Dissolved gas conditioning for mine water utilization
Pure oxygen transfer columns and vacuum degassing columns can be used to drive dissolved nitrogen gas concentrations down to sub-saturation levels.
Climate change mitigation needs mariculture, new research concludes
NGO-academic collaborative study finds that mariculture “done right” can aid climate change mitigation by cutting greenhouse gas emissions.
Ocean acidification isn’t just a carbon story – it’s also about nitrogen
Dr. Barry Costa-Pierce on the connection between nitrogen, carbon dioxide and ocean acidification, and the importance of restorative aquaculture.
Marine aquaculture and ocean deacidification technology
Current deacidification techniques are limited to bench scale, highlighting need for sustained R&D before implementation is possible.
Can the ocean store more carbon than previously believed?
A new study has found that the ocean can store about 20 percent more carbon dioxide from the air than scientists previously estimated.
Feed ingredient manufacturer NovoNutrients upgrades its carbon capture technology
Biotechnology company NovoNutrients claims it can capture two tons of carbon dioxide for every ton of carotenoid-rich flour, or microbial meal, that it produces.
Can tapping into environmental DNA reveal kelp’s carbon sequestration potential?
A new global research project leverages environmental DNA to better measure and understand the carbon sequestration potential of kelp.
Deep-ocean seaweed dumping for carbon sequestration called questionable, risky and not the best use of valuable biomass
Study: Without sound science on the impacts to fragile ecosystems, seaweed carbon sequestration distracts from more effective interventions.
Novel land-based tropical red macroalgae cultivation system is based on influent deep seawater as the nutrient and carbon sources
Yield and productivity rates for red macroalgae can exceed terrestrial agriculture, resulting in a carbon-neutral, carbohydrate-rich biomass source.
Manage pH cycles to maintain animal health
The ideal pH for most aquaculture species is between 6.0 and 8.5. Lower pH values may result in decreased growth and survival, and greater susceptibility to disease. pH typically is lowest in the early morning, increases during the afternoon and declines at night.
Correct liming improves pond water, bottom quality
Shrimp and fish farmers frequently apply liming materials to ponds to increase the pH of bottom soils, elevate alkalinity and water hardness and improve conditions for microbial activity and benthic animals.
Changing paradigms in shrimp farming, part 6
The final factor in developing a heterotrophic system is the amount of organic material being fed to a pond, and the carbon per nitrogen balance of that material.
Organic matter in pond bottom sediment
Organic matter – including fertilizers, unconsumed feed and feces of culture animals – settles to pond bottoms, often with a negative impact on water quality.
Net-zero heroes: Hybrid and electric commercial fishing vessels set out to cut the industry’s carbon emissions
From electrified fishing fleets to hybrid wellboats, the seafood community is looking to decarbonize commercial fishing vessels and reduce carbon emissions.