Marine food webs, ecosystem models and stable isotopes

Ecosystem models and stable isotopes are the important methods to analyse marine food webs, which is more convenient and systematic comparing with traditional way. In this chapter, we picked six case studies to show the marine food web researches by ecosystem models and stable isotope analysis. We focus on the coral reef, seagrass, bay, lagoon and aquaculture ecosystem, including tropical and subtropical regions, where represent the higher biological productivity and biodiversity. EwE and stable isotope analysis are used to describe food sources, tropical level, food webs, moreover, ecosystem function and structure, which became most popular combinational method.