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The most abundant mammals on Earth
1Nicholas School of the Environment, Duke University, Durham, NC 27708, USA.
Trends in Ecology & Evolution
|May 13, 2023
Summary
Researchers estimated global mammal abundance using species traits, range sizes, and conservation status. This approach helps predict biomass for numerous species, highlighting estimation challenges.
Area of Science:
- Ecology
- Conservation Biology
- Zoology
Background:
- Accurate estimates of global mammal abundance are crucial for conservation efforts.
- Previous methods often lack comprehensive data for thousands of species.
- Understanding biomass distribution is key to assessing ecosystem health.
Purpose of the Study:
- To present novel estimates of global mammal abundance and biomass.
- To introduce a predictive approach utilizing species traits and conservation status.
- To summarize the methodologies and challenges in estimating mammal biomass.
Main Methods:
- Developed new global mammal abundance estimates.
- Utilized relationships between species traits (e.g., body size, diet).
- Incorporated range size data and International Union for Conservation of Nature (IUCN) Red List categories.
Main Results:
- Generated biomass predictions for thousands of mammal species.
- Quantified global mammal abundance based on integrated data.
- Identified key factors influencing biomass estimations.
Conclusions:
- The developed approach provides a scalable method for estimating mammal biomass.
- Species traits and conservation status are strong predictors of biomass.
- Further research is needed to refine estimation methods and address data gaps.
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