Humans responsible for loss of Earth's natural resilience
H U M A N S H AV E caused the natural resilience of the Earth's ecosystems to decrease, according to a new study. Researchers examined a long-term owl roost in the US. Owls prey on small mammals and the excreted remains of those meals that accumulated over time, provide us an insight into the composition and structure of small mammals over the past millenia. The research suggested that when the Earth went through a period of rapid warming about 13,000 years ago, the small mammal community was stable and resilient. But, since the late 1800s, human-made changes to the environment had caused an enormous drop in biomass and energy flow. This dramatic decline in energy flow means modern ecosystems are not adapting as easily as they did in the past.