Here, the authors estimate mammalian biomass from the 1850’s to today, tracking an increase of over five-fold in human and domesticated mammal biomass and a two-fold decrease in wild mammal biomass. Recent trends of increase in some wild marine mammals are seen to be still far below historic levels. The results of this study are caveated due to limited historic data but have implications for conservation efforts.
- Lior Greenspoon
- Noam Ramot
- Ron Milo