2024年1月22日 · What happens to ocean-bottom ecosystems if humanity creates giant underwater seaweed landfills? And how will companies monitor the effects of sending tons of seaweed to a watery grave?

2024年8月29日 · Although bits of seaweed do reach the ocean floor naturally, they are widely scattered. Adding tons of concentrated seaweed could spur microbial growth, depleting oxygen in the water, Duarte says. Ultimately, though, little research has been done, so we don’t know what will actually happen.

2024年3月14日 · Introduced in large quantities to the bottom of the ocean, seaweeds “could potentially smother seafloor life”, they could alter the sensitive chemical balance on the ocean floor, and disrupt food webs.

2024年5月27日 · Fragments of seaweed are often caught in deep-sea trawls, or recorded by submarines and underwater robots during surveys of the ocean floor. Seaweed DNA has been detected in deep sea water...

2023年9月8日 · Seaweed, or marine macrolagae, includes many different kinds of photosynthetic organisms. Some, like kelp and sea lettuce, are found in coastal areas where they cling to the ocean floor in areas shallow enough to receive sufficient light for photosynthesis. Others, like sargassum, float freely in the open ocean.

2024年3月15日 · Seaweeds not making it to the ocean floor would decay to detrital organic particles and eventually inorganic matter, not providing sequestration, but undergoing elemental recycling and transformation. The fate of seaweed biomass accumulating on …

2023年6月1日 · When the seaweed is harvested, eaten by animals, or washes ashore, its stored carbon is released back into the atmosphere. Running Tide's model, in theory at least, would take that sequestered...

However, there is a lack of data and many unanswered questions about where seaweed detritus ends up on the ocean floor and how that impacts the carbon cycle. The seaweed on the seafloor traps vast amounts of carbon, called sequestration. When calculating global carbon sources and sinks, the role of seaweed isn’t fully understood or considered.

2024年5月22日 · Here we provide national and global estimates for seaweed-derived particulate carbon export below 200 m depth, which totalled 3–4% of the ocean carbon sink capacity. We characterized export...

2021年3月24日 · To make the "seaweeds for sinking to the deep ocean floor" offer as attractive as one of the cheapest prices paid for seaweeds in Canada (wild harvested Ascophyllum nodosum, or rockweed), the...