The image shows a food web in an arctic ecosystem. rising temperatures in the arctic ocean can lead to large die-offs of phytoplankton, which are autotrophs. what would most likely happen in an arctic ecosystem if the phytoplankton population decreased? a)the populations of all other organisms in the food web would decrease because there would be less energy available in the ecosystem. b)the populations of krill and zooplankton would decrease, but no other organisms would be affected. c)the populations of all other organisms in the food web would increase because there would be more energy available in the ecosystem. d)the populations of zooplankton and krill would increase, but no other organisms would be affected.