**Author details**

Liliana Cristina Soare\*, Alina Păunescu and Ponepal Cristina Maria Department of Natural Sciences, Research Centre for the Nature Protection, University of Pitești, Pitești, Romania

\*Address all correspondence to: soleil\_cri@yahoo.com

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
