AI Article Synopsis
- The extinction of big animals and plants is a major problem in our time, called the Anthropocene.
- Big animals are at risk due to human activities like hunting, land use, and climate change, which affects how ecosystems work.
- Losing these large creatures can seriously harm the environment, and we should focus on protecting them and large trees to help keep nature balanced and healthy.
Article Abstract
A prominent signal of the Anthropocene is the extinction and population reduction of the megabiota-the largest animals and plants on the planet. However, we lack a predictive framework for the sensitivity of megabiota during times of rapid global change and how they impact the functioning of ecosystems and the biosphere. Here, we extend metabolic scaling theory and use global simulation models to demonstrate that (i) megabiota are more prone to extinction due to human land use, hunting, and climate change; (ii) loss of megabiota has a negative impact on ecosystem metabolism and functioning; and (iii) their reduction has and will continue to significantly decrease biosphere functioning. Global simulations show that continued loss of large animals alone could lead to a 44%, 18% and 92% reduction in terrestrial heterotrophic biomass, metabolism, and fertility respectively. Our findings suggest that policies that emphasize the promotion of large trees and animals will have disproportionate impact on biodiversity, ecosystem processes, and climate mitigation.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7000713 | PMC |
| http://dx.doi.org/10.1038/s41467-020-14369-y | DOI Listing |
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