For every human on Earth, there are approximately 2.5 million ants. This equates to a staggering 20 quadrillion ants globally. A joint study by the University of Hong Kong and the University of Würzburg in Germany aimed to quantify ground and tree-dwelling ant populations, arriving at this massive figure. The total mass of ants surpasses that of all birds and mammals combined and represents roughly one-fifth of the human biomass. Researchers believe this is a conservative estimate.
The study emphasizes that understanding the distribution and abundance of organisms is crucial for comprehending their ecological roles and impact on other species. This knowledge has been lacking for insects, despite their recognized significance in global ecosystems.
To reach their conclusions, scientists analyzed 489 studies spanning various continents, biomes, and habitats. These studies employed diverse methodologies, including leaf litter examination for tree-dwelling ants and pitfall traps for ground-dwelling ants. Pitfall traps involve placing a beaker level with the ground, capturing ants as they fall in.
Currently, there are 15,700 recognized ant species and subspecies. These insects play vital roles in seed dispersal, decomposition, and the food chain as both predators and prey.
Despite their vast numbers, ant populations face threats from habitat loss, invasive species, and climate change.
