I won't pretend to understand it, but the following is more grammatically correct: (incidentally, it was already very good!) "The 'Population Viability Analysis' (PVA) tool is relatively new and uses the concept of Minimum Viable Population (MVA) to predict the population dynamics of a species. In the order of the Chiroptera, there is still a clear deficit of research with PVA, which indicates the need for more research in this area. PVA is considered (by ...? to be) one of the most important strategies in conservation biology, as it is a preventive and corrective analysis tool, which can help to prevent the decline and extinction of a population. It can also assist in the appropriate management for populations that are already classified as vulnerable. PVA was used to model the interaction between four colonies of Phyllostomus Hastatus that exist in one population in Marambaia Island, municipality of Mangaratiba, Rio de Janeiro. The software used for this analysis was the VORTEX 9.99 and the results showed that this population is not at risk of extinction or decline within the next one hundred years." I hope that this helps.

That's good news. Remember when referring to a Genus and Species the words should be in italics.