The position of each author within the byline of these publications was established according to the guideline provided in the literature [Tscharntke, T., M.E. Hochberg, T.A. Rand, V.H. Resh, and J. Krauss, Author sequence and credit for contributions in multiauthored publications. PLoS Biology, 2007. 5(1): p. 13-14.]. Typically, the most contributing authors where represented in the first, second and last position. The first author was systematically the writer and the person the most responsible for the development of the material presented in the publication.