 Grey dune, Baleal, Peniche, Portugal. Image by Júlio Reis, via Wikimedia Commons. Licensed CC BY-SA 3.0 |
Lorna DuneGrey dune Grey dune Add article description Grey dunes are fixed, stable sand dunes that are covered by a continuous layer of herbaceous vegetation. These dunes are typically located 50–100 meters from the ocean shore and are found on the landward side of foredunes (also known as yellow dunes). Grey dunes are named for their characteristic grey color which is a result of the ground cover of lichen combined with a top soil layer of humus. This article needs additional citations for verification. (December 2015) Grey dune in Baleal, Peniche, Portugal Formation Grey dunes are formed when pioneer species inhabit embryo dunes and begin a successional process toward dune stabilization and soil formation. Pioneer plants capture saltating sand grains carried… (Source: Wikipedia)
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