It’s not uncommon in my work with rare species that populations have effective population sizes in the single digits despite a census population size of a few hundred.

Effective population sizes (Ne) and bottlenecks are two of the most important concepts that must be acknowledged and dealt with in captive populations. In fact, Ne is a much better indicator for the health of any population than census size. However, it is often a difficult concept for people to grasp. Usually, because the definition… Continue reading It’s not uncommon in my work with rare species that populations have effective population sizes in the single digits despite a census population size of a few hundred.