Abstract

We present this work with a powerful header image that accompanies us along it. This is a string, a line (a line of work and research), of which is ‘hanging’ a number of elements that are representative of the time in which we are and has already been described above, and notes that we will find below. Thus, each of the elements we identify with the problems to be studied in the chapters of this work. Characterization is thus represented by the Doñana area of the blade and the butterfly, in reference to the importance of natural areas under study, the hourglass, characterized as the time in planning and the use of sustainability indicators; the hull as the hallmark of human impact on both existing and in some other, crumpled paper, like so many reflections and full of personal notes that end up in the bin along the development of this document.