By Herp News
Howler monkeys are often targeted by hunters. Photo by Rhett A. Butler Over-hunting contributes to forest carbon loss, claims a study published this week in the AAAS journal Science Advances. After looking at data from 31 sites from the Atlantic Forest — found along the southeast coast of Brazil — the researchers conclude that the over-hunting of large animals in those forests will eventually result in the widespread loss of the larger tree species responsible for storing the most carbon. The team of Brazilian and European researchers, led by Carolina Bello from Universidade Estadual Paulista, looked at seed dispersal by frugivores as well as the relationship between seed size and a tree’s carbon storage potential, and discovered a disturbing trend. Hunters in the region tend to harvest larger species of birds and mammals at unsustainable rates. These animals are often the species that eat, carry, and disperse large fruits and seeds. The tree species that produce largest animal-dispersed seeds tend to be taller and have higher wood density. Therefore, as these animals disappear, the trees with the greatest carbon storage capacity are less likely reproduce. Gradually, these tree species are replaced by smaller and less dense trees, and the total carbon storage capacity of the forest is reduced. “We found a positive correlation between seed diameter and wood density … as well as maximum tree height,” the authors write, and those correlations were especially pronounced in species with animal-dispersed seeds. Simulation pathway of…
…read more
Read more here: herpetofauna.com
No products found.