Responsibility
Study: Ocean warming boosts deep sea phytoplankton, threatening marine ecosystems
A new study indicates deep sea phytoplankton thrive with ocean warming, raising concerns about marine ecosystems.
Fisheries
‘Who will win and who will lose?’ How climate change is shifting the ocean food chain – and potentially global fisheries
Climate change is shifting the foundation of the ocean food chain, potentially but not definitively causing a poleward migration of fisheries.
Responsibility
Global trends in climate change detected in indicators of ocean ecology
Climate change effects in marine-surface microbial ecosystems may be undetected because previous studies have taken other approaches.
Fisheries
Researchers examine the impact of climate change on zooplankton
Australian team models the impact of climate change on zooplankton, which represents about 40 percent of the world’s marine biomass.
Responsibility
Satellites show phytoplankton productivity plunge in the Gulf of Maine
Phytoplankton are about 65 percent less productive in the Gulf of Maine than they were two decades ago, according to a new NASA-funded study.
Intelligence
Can technology protect salmon farms from harmful algal blooms?
Salmon farms are vulnerable to the impacts of harmful algal blooms. Scotland's aquaculture industry is embracing technology as a solution.
Innovation & Investment
Killers at sea: Harmful algal blooms and their impact on aquaculture
The causes and effects of harmful algal blooms have only been studied recently, as damage to the global aquaculture industry mounts.
Responsibility
Thoughts on pond fertilization
Prof. Boyd provides additional insights into fertilization of aquaculture ponds, discussing phytoplankton requirements, organic and inorganic fertilizers, and other relevant aspects of pond management.
Health & Welfare
Dissolved oxygen dynamics
Dissolved oxygen management is the most important requirement of aquaculture pond water quality. DO concentration below 3 mg/L is stressful to shrimp.
Responsibility
Factors affecting efficiency of commercial fertilizers in aquaculture
Intensification of pond aquaculture involves the use of commercial fertilizers such as urea and triple superphosphate to stimulate phytoplankton blooms. There is no objective way of determining the ideal fertilization rate for an individual pond.
Responsibility
Properties of common commercial fertilizers in aquaculture
Commercial nitrogen and phosphorus fertilizers are widely used in aquaculture production systems to stimulate phytoplankton growth and the food web that provides natural food organisms beneficial to stocked fish fry and shrimp postlarvae.
Responsibility
The impact of atmospheric carbon dioxide, alkalinity in freshwater aquaculture
Changes in atmospheric carbon dioxide concentration should have little effect on rising alkalinity concentration in aquaculture systems. Climate change is of greater concern in freshwater aquaculture than is an increase in alkalinity.
Health & Welfare
Phytoplankton and its impact on water quality
Phytoplankton has several important effects on water quality, including removing ammonia nitrogen from water and absorbing nutrients from the water for its growth. Abundance of blue-green algae tends to increase as nutrient inputs in aquafeeds or fertilizers increase.
Responsibility
Phytoplankton in aquaculture ponds: Friend or foe?
A vigorous phytoplankton bloom will support a healthy benthic community and will contribute significantly to stabilising and maintaining adequate pond water and bottom quality.
Aquafeeds
Understanding the oxygen demand of aquafeeds
Manufactured aquafeeds, if improperly managed, can result in undesirable oxygen demand that can reduce dissolved oxygen levels and pollution through effluents, and stress cultured animals.
Health & Welfare
El fitoplancton es un componente crítico de los ecosistemas de estanques acuícolas
Los organismos fitoplanctónicos, o microalgas, son muy abundantes en los estanques de acuacultura y tienen un papel crítico en estos ecosistemas, influyendo significativamente en la ecología general del estanque y en la calidad del agua. El manejo adecuado de las poblaciones de fitoplancton es esencial para el éxito de la producción de estanques acuícolas.