Animals becoming nocturnal to avoid humans
- 6 years ago
BERKELEY, CALIFORNIA — Like the dinosaurs millions of years ago, humans are now the planet's super predator, and it's driving all other wildlife to take the night shift.
In a new study published in the journal Science, researchers from the University of California, Berkeley analyzed previous studies that captured the 24-hour movements of over 62 medium to large-bodied mammal species across six continents.
They found that human disruption made animals 1.36 times more nocturnal on average, meaning those that typically split activities evenly between day and night became 68% more active at night.
Human disturbance in this case wasn't just limited to destructive behavior. Even activities like hiking, farming, or wildlife-viewing evoked the same behavioral pattern.
The consequences are potentially negative. Animals that lack the traits to thrive nocturnally become vulnerable to non-human predators, affecting their chances at survival and reproduction.
Scientists have already noticed some of these changes. Coyotes in California's Santa Cruz Mountains have begun hunting at night to avoid hikers, forgoing their usual daytime prey of squirrels and birds for nocturnal rats and rabbits.
Though more research needs to be conducted on the topic, it's important for humans to be more mindful of how we're impacting animal habitats, and aim for coexistence.
In a new study published in the journal Science, researchers from the University of California, Berkeley analyzed previous studies that captured the 24-hour movements of over 62 medium to large-bodied mammal species across six continents.
They found that human disruption made animals 1.36 times more nocturnal on average, meaning those that typically split activities evenly between day and night became 68% more active at night.
Human disturbance in this case wasn't just limited to destructive behavior. Even activities like hiking, farming, or wildlife-viewing evoked the same behavioral pattern.
The consequences are potentially negative. Animals that lack the traits to thrive nocturnally become vulnerable to non-human predators, affecting their chances at survival and reproduction.
Scientists have already noticed some of these changes. Coyotes in California's Santa Cruz Mountains have begun hunting at night to avoid hikers, forgoing their usual daytime prey of squirrels and birds for nocturnal rats and rabbits.
Though more research needs to be conducted on the topic, it's important for humans to be more mindful of how we're impacting animal habitats, and aim for coexistence.