1 1.10 Application of estuarine and coastal classifications in marine ...

32). Results show that sites selected using ecosystem services alone did not protect sufficient
proportions of biodiversity, but biodiversity alone did protect substantial amounts of ecosystem
services. The authors found that strategically targeting biodiversity and only four of the
ecosystem services that were positively correlated with biodiversity offered an acceptable overall
result with several areas identified where both high biodiversity and high ecosystem services
coincide. Areas of concordance also were identified in a global analysis (Naidoo et al. 2008), but
better assessment of synergies and trade-offs in conserving biodiversity and ecosystem services
are needed to support optimal strategies in an ecosystem-based approach to management.
1.10.11.1.2 Mapping change in ecosystem service values, Puget Sound, Washington State, USA
For Maury Island, a small island located in Puget Sound, Washington State, USA,
changes in ecosystem service value flows were estimated under two alternative development
scenarios: 1) enlargement of a gravel mine and associated dock and 2) fully building in the
allowable residential zone over 20 years (Figure 33) (Troy and Wilson 2006). The unique land
cover classification included disturbed land (urban, barren, unvalued); saltwater wetland;
freshwater wetland; nearshore habitat (intertidal salt estuaries, estuarine intertidal aquatic beds,
stream mouths, sea cucumber habitat, geoduck habitat and herring and salmon spawning
grounds); coastal open water; grassland; stream buffers (50ft); coastal riparian; beach; beach near
dwelling and forest). The Maury Island scenario analyses estimated that the mine development
would result in loss of $703,000 in yearly ecosystem services the following year and the
residential development scenario would result in a loss of $548,000.
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