A paper by ecologists at the University of Ottawa examined 88 species on four continents, and more than 50 relationships between predator and pray as well as herbivores and the plants they eat, and found that food chain events are taking place earlier in the year than they have in the past, because of the warming climate.
"These events have been occurring about four days earlier per decade since the 1980s, according to the National Observer. On average, the timing is now off by a full 21 days for the 88 species the researchers examined.
In Washington state's Lake Washington, the very bottom of the food chain has been affected, according to the research, as plant plankton is now blooming 34 days earlier than the organisms that feed on them.
Even smaller changes can have a major impact on animal populations: plants in Greenland are now blossoming just three days earlier than baby caribou are born, throwing off the species that has survived on them and causing more of the animals to starve.
"It leads to a mismatch," Kharouba said. "These events are out of synch."