Ecosystems offer huge diversity around the globe and facilitate several advantages in different regions. In this new backdrop of frivolity and climatic variations, these ecosystems suffer notable modifications enlarged by domestic uses of which it was subjected to. Certainly ecosystems provide diverse services to mankind through their composition and structure but the bearable levels are unidentified. 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 present a universal view on functioning of ecosystems, modeling, sampling techniques, invading species, the reaction of organisms to modifications, the carbon dynamics, the mathematical models and theories that can be executed in diverse circumstances.