Ecosystems offer huge diversity around the globe and facilitate several advantages with different regions. Certainly ecosystems provide diverse services to humankind through their composition and structure but the bearable levels are unidentified. In this new backdrop of frivolity and climatic variations, these ecosystems suffer notable modifications enlarged by domestic uses of which it was subjected to. The conservation of these eco-systemic services needs a fair perception of their complexity. The function of research is not only to describe these ecosystems but also to undoubtedly describe the allowable usage levels. Their description proves to be significant not only for the local citizens that use them but also for the protection of biodiversity. So the measurement, management and protection of ecosystems need unique and varied techniques. For all these reasons, the purpose of this book is to introduce a universal view on functioning of ecosystems, a species ecological modeling - homotopy analysis and extreme climatic events as drivers of ecosystem change.