Blog Post by Elène Haave Audet, Restoration and Rewilding Research Field Assistant
For many of us, the creatures of the tropical forest that dare venture at night remain elusive and mysterious beings, their ways of life foreign to us daytime dwellers. Among these enigmatic animals are bats, the group of mammals with the second largest number of species in the world, whose charismatic presence in the tropics will not go un-noticed to the keen nocturnal observer.
Like many sensitive animals, bats are particularly special as a group, since many species require natural areas that have not been disturbed by human activity to find food and places to live. Thus, the presence of many different bat species can provide information about the health of an area. For this reason, Osa Conservation has started sampling the diversity of bats in areas that are being actively restored into forest, after years of use by humans. Overtime, the presence of different types of bats in these areas will help determine the success of restoration.
After seeing the restoration plots for the first time this May, I was convinced that the bat diversity in these areas would not be exciting: that is, I expected to find very little diversity, since the restoration areas are in their infancy and have very little forest cover.
Was I ever wrong! The bat life in the restoration plots is teaming with diversity. After four months of sampling, we have recorded 24 different species of bats, ranging from those that eat insects, fruits, nectar, fish, and yes, even blood. To add to this excitement, two species of fruit eating bats recorded in the restoration areas had not been previously detected on the Osa Conservation property!
Why, then, has the bat nightlife been much more exciting than anticipated? Although the restoration areas have very few trees, the surrounding areas are lush with tropical forest, providing ideal habitat for these endearing creatures. This is very encouraging news for restoration initiatives, as connecting the surrounding forests with restored habitats will continue to support the diverse lifestyles of our nocturnal friends, so they may continue hunting insects, fishing bats, and snacking on figs.
Now every night of sampling is an adventure, and I cannot wait to see what other bats we will encounter in these deceptively rich areas!
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