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CRITERIA FOR SELECTING NATURAL AREAS r . <br /> FOR. CONSERVATION ACTION <br /> PRIORITY ECOSYSTEM FUNCTION <br /> H Presence of wetlands : hydrologic buffering, contribution to water storage . <br /> Vegetation : thermal buffering, water storage natural areas serving as sites for insect pollinators and predators , <br /> which serve agriculture , nutrient cycling . <br /> Vegetation as riparian buffer . <br />