Sea Buckthorn (Hippophae rhamnoides) is non-native on the west coast of Britain and is highly invasive, spreading rapidly once established. It is clearly very well established in parts of Llangennith Burrows and poses a significant threat to the open rabbit-grazed dune vegetation. Unfortunately control measures are expensive and with the limited resources available in the current economic climate it's quite likely the spread will continue.
Native open dune vegetation dominated by bright green mats of Sand-hill Screw-moss (Syntrichia ruralis var. ruraliformis).