ABSTRACT

In contrast to conventional vegetation mapping, aerial imagery is non-selective in its data capture and multispectral and hyperspectral imagery adds even more information about these changes for scientists who are attempting to interpret coastal change from a variety of perspectives. Unmanned aerial vehicle (UAV) sensors can: (i) offer comprehensive (i.e. non-selective) high-resolution, spatio-temporal data capture over inaccessible areas of saltmarsh; (ii) create 3D models of saltmarsh micro-topography, soil, and vegetation; and (iii) enhance knowledge and understanding of saltmarsh functioning and the spatial extent of vegetation composition and habitat change over time that affects ecosystem functioning. Such data can: (i) inform coastal policy for improved and sustainable coastal management and (ii) raise awareness and educate the public about the importance of saltmarsh, the benefits of natural coastal protection, and adaptation management. The aims and objectives of this chapter are to demonstrate the practical potential of using UAV-based remote sensing platforms and sensors to monitor, map, and model coastal and estuarine saltmarsh.