'The demographic declines of the Rapa Nui are linked to the long-term effects of climate change on the island's capacity for the production of food...
'We did not find traces of an idyllic equilibrium with nature, and we did not find traces of a huge collapse. Instead, we found traces of interactions between three factors: Climate change, human population size, and changes in the ecosystem. The climate change manifests itself as a long-term pattern of changes in rainfall over some 400 years. The population grew during this same period, and the islanders also increased and changed their use of natural resources and agricultural methods...
'The islanders were not only aware of the changes, but they were also able to change the way the lived on the island. They gradually changed from the quite complex society that raised the marvelous moai statues, to a later and simpler agrarian society with reduced family sizes and a new way of producing food in stone gardens...
'These three factors affected the population on Rapa Nui, and they are also important on a global scale. We studied Rapa Nui and its history because we are trying to understand what is happening with the planet. Everybody talks about climate change and the resulting problems, but very few people are talking about the rising global population and the problems it causes.'
https://phys.org/news/2020-09-growth-decline-rapa-nui-population.html
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