Skip to page content

FSC logo
The Seashore

Sand Dunes

Mobile (yellow)or Fore Dunes.

Mobile, yellow or fore dune

When sand has built up above the height of the highest spring tides (EHWS) marram grass (Ammophila arenaria) dominates; it quickly encourages substantial accretion and this overwhelms the typical embryo dune species.

This marram-dominated stage of sand dune succession is the most widespread, extensive colonising community on mobile coastal sands all around the British coast.

Although the influence of the sea is waning, the mobile nature of the substrate makes this a difficult habitat for many species to cope with. Scour, dehydration and nutrient and temperature stresses are still important abiotic factors here. There is still a lot of bare sand at this stage, which is why this type of dune is sometimes referred to as a yellow dune.

On the plus side marram stabilises the dunes, nutrients and organic matter begin to accumulate. Rabbits may graze the site and their droppings will input nutrients into the system.

 


Looking for a next step?
The FSC offers a range of publications, courses for schools and colleges and courses for adults, families and professionals that relate to the seashore environment. Why not find out more about the FSC?

FEEDBACK
Do you have any questions?

Copyright © 2008 Field Studies Council  
Creative Commons License
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Licence
.

Site Statistics by Opentracker