Anaëlle Durfort shares her experience quantifying oceanic carbon sinks.
But the projected restoration of whale populations depends on the extent of climate change . Looking at two scenarios, we estimated what the biomass of whale carcasses on the sea floor would be by 2100. Under the worst-case scenario proposed by the Intergovernmental Panel on Climate Change , the sequestration would reach 170,000 tonnes per year. Without climate change, recovered whale populations would be able to sequester nearly twice as much carbon.
Looking at carbon sequestration mediated by exploited species such as whales and krill, the team I work with highlights the links between biodiversity, human activities and climate. Krill catching on an industrial scale, often for pet food or aquaculture supplements, has an impact on the entire marine food chain, as well as on biogeochemical cycles.
But this commodification of nature in the name of conservation seems problematic to me. These solutions are part of the same economic and societal framework that put us in the ecological and social crisis we are facing. This is not in line with the transformative changes that we need. What needs to change is our relationship with nature.
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