Mapping Spatial/Temporal Distributions of Green Macroalgae in a Pacific NorthwestCoastal Estuary via Small Format Color Infrared Aerial Photography

摘要

e estuary's channel were conducted within about two weeks of each aerial survey.Distributions of the perennial seagrass Zostera marina along the upper edge of the channel were delineated from the aerial photography taken in late spring before extensive development of the green macroalgae beds. Summer expansion and fall contraction of these algal beds (compromised principally of Ulva spp and Entercomorpha spp.) was documented via a series of four aerial and ground surveys conducted between May and December. The study demonstrated the usefulness of this approach in mapping blooms of green macroalgae in Pacific Northwest estuaries.