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Environmental Business Review | Monday, April 24, 2023
Blue Carbon is captured and saved in marine plants, animals, waters, and deposits.
FREMONT, CA: We must explore every avenue possible to address the climate crisis, investigate innovative solutions, and anticipate the oceans for solutions. The oceans just serve the planet as a huge natural carbon sink. Still, due to climate change, overfishing, and other pressures, we’ve debased the natural track through which oceans trap carbon.
Blue Carbon is the carbon captured and saved in marine plants, animals, waters, and deposits — and interventions to grow stocks of this blue carbon could form the ground for the next big natural climate solution (NCS).
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Encouraging possibilities for seaweed
The Carbon Sequestration by Seaweed report concentrated on three interventions for growing seaweed-founded carbon requisition:
• Preserving present seaweed forests and recovering forests that have refused
• Rising productivity and carbon separateness performance of present seaweed farms through the capacity structure
• Extending seaweed farming into offshore waters.
Concerning expanding seaweed farms, the report found that there are main places around the globe that provide a suitable situation for developing seaweed refinement. Expanding seaweed farming into offshore waters is perhaps the most encouraging way to expand C sequestration by seaweeds at a scale that could greatly contribute to climate stability.
The findings also highlight the significance of the outcomes of seaweed. For illustration, directly sinking seaweed into the deep ocean could offer an immediate and direct climate outcome regarding carbon sequestration. However, sinking seaweed would preclude the generation of other benefits and could involve many poorly understood ecological hazards. Natural stands of seaweed and seaweed farms present an important source of nutrition. They could contribute to reducing GHG emissions if seaweed is utilized to make products that can substitute GHG-intensive products such as cement, plastics, and fertilizer. It may also verify it is bound to feed small quantities of specific seaweed species to ruminants to lower their methane discharge. Growing markets for seaweed products to deliver climate advantages could finally result in regenerative solutions that advantage people and nature.
The ‘twilight zone’ deserves more attention.
A report examines closely one possible intervention according to a hypothetical and much-hyped pathway called the ocean “whale pump.” This event is hypothesized to happen when whales feed in the deep ocean and then excrete at the ocean surface, deposing nutrients that may encourage algal blooms, which can, under the proper conditions, capture and sequester carbon from the environment. This sequestration is along with the more clearly defined amount of carbon that animals such as whales sequester when they expire and sink to the ocean floor. As impressive and charismatic as this “whale pump” sounds — and while there are heaps of crucial grounds to maintain and reconstruct whale populations —the expert group remarked there might be restricted potential in the restoration of whale inhabitants as a natural climate solution because of poorly realized science, a risk of moral risk and the point that whales are already a safeguarded species in numerous of the world’s oceans. Yet, the experts EDF convened recognized more possibility in a much less famous pathway: preserving the ocean’s “twilight zone,” or mesopelagic, ecosystem. As the requirement for seafood from wild capture fisheries and fishmeal for aquaculture rises, it is more likely that this unused resource will be aimed at industrial-scale fishing.
An unsure future for nearshore ecosystems
Uncertainty around the capacity of some coastal blue carbon ecosystems to isolate carbon, mainly because climate change impacts fragile nearshore systems. This may call into question the capacity of some nearshore systems to work as NCS and to present robust crediting possibilities within present carbon markets. Moreover, the group recognized an urgent requirement to explain emissions from these ecosystems of greenhouse gases (GHGs) except carbon dioxide, comprising methane and nitrous oxide. Still, preserving and restoring mangroves and tidal marshes will obtain massive advantages for livelihoods, coastal protection, and biodiversity — and these co-advantages can’t be ignored.
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