Ecosystems are constantly evolving in response to various changes in the environment. In NakamuLab, we study the coral reef, seagrass, and mangrove areas in order to gain a better understanding of related ecosystem processes, which vary in their complexity. We conduct ecological surveys, monitor water quality, and perform laboratory and in-situ experiments, applying a variety of geochemical techniques and sensors. We are also developing an integrated modelling system for our ecosystems of interest, which can be used to make predictions for possible future scenarios, as well as hindcast conditions for important events in the past. Through our research efforts, we aim to support ongoing research on global environmental changes linked to global warming and ocean acidification, dynamics of ecosystems under anthropogenic influence, and the establishment of a sustainable human-ecological system.