“…The cost-benefit ratio and internal rate of return for restoring wetlands, especially coastal wetlands, can be low in comparison to other ecosystems types, however, restoration is often economically viable (de Groot et al, 2013;Cao et al, 2018). Its viability largely depends on the spatial extension of the wetland (Yang et al, 2016), the time period over which costs and benefits are assessed (Vázquez-González et al, 2017), the rate of discounting applied (de Groot et al, 2013;Turpie et al, 2016) and the level of restoration considered in the analysis (Pattison-Williams et al, 2018). In some wetland restoration projects, the costs outweigh the benefits (Pattison et al, 2011) while in others, the benefits can far outweigh the costs (Birol et al, 2006).…”