A new study has found that fewer young krill are surviving to adulthood around Antarctica as ocean temperatures have risen in the Southern Ocean in the past few decades. The researchers, who looked at decades of data on krill body lengths and abundance, found that the highest densities of krill had shifted southward by some 440 kilometers (273 miles) since the 1920s. The scientists note that the findings could alter food webs in the Southern Ocean. Currently, the internationally managed krill fishery does not take the location and size of the krill population into account.
— source news.mongabay.com | 30 Jan 2019