Mosses and lichens on Dutch island

This video from the Netherlands says about itself:

October 10, 2012 by Giervalk1

A short tour on the uninhabited island Rottumerplaat, one of the two Wadden islands of Groningen province in the north of the Netherlands. The island is off-limits for people, only a handful of researchers and bird counters (which also was the reason of my visit) can enter the island occasionally.

Translated from the blog of the warden of desert island Rottumerplaat in the Netherlands:

Moss survey on Rottumerplaat

Posted on October 11, 2012, by Bert Corté

Every 10 years we do a survey of leafy mosses, liverworts and lichens on the Rottum archipelago (see here, page 27 Section 6.4.2.). In 2000, for the first time ever, we did a complete survey on Rottumerplaat. Then, 32 mosses and 2 liverworts were found. The number of species of mosses in the meantime has been growing steadily. This year 40 species were found, of which 37 were mosses and three liverworts. The number of lichens increased as well, from 35 species in 2007 to 82 in 2012.