Forecasts can now predict the location and onset of marine heat waves that can disrupt marine ecosystems. Scientists say the next step is to forecast what happens to top predators that inhabit those ecosystems.
Scientists used data collected from radio-tagged elephant seals to gauge the reaction of the species to changing ocean conditions. Credit: Dan Costa/UC Santa CruzClimate-ready fisheries management decisions could include, for example, open fishing seasons, quotas, and boundaries that adjust to changing distributions of species. These decisions are especially important for species such as tuna, which fleets want to catch, as well as others such as endangered sea turtles they want to avoid.
Scientists examined the effects of four major marine heat waves in the northeastern Pacific Ocean on 14 different predators including sea lions, bluefin tuna, mako sharks, and albatrosses. The effects on distributions varied across heat waves and species. In some cases the habitat of species came close to disappearing while in other cases it nearly doubled in area.
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