Kelp forms vast seaweed forests along temperate coastlines, which sequester large amounts of atmospheric carbon. But according to a new study, warming oceans could reduce the capacity of kelp forests to trap carbon for long periods in deep ocean stores, exacerbating the effects of climate change.Kelp forms vast seaweed forests along temperate coastlines, which sequester large amounts of atmospheric carbon. But according to a new study, warming oceans could reduce the capacity of kelp forests to trap carbon for long periods in deep ocean stores, exacerbating the effects of climate change.