Oct18 0 Excursion2Texel Posted by Gerard Muyzer Thursday October 17 we had our annual excursion to the Sulfter on Texel to collect microbial mats for our master course Microbial Ecology. The students, Henk Bolhuis, Linda Amaral-Zettler and me looking at microbial mats that produced a lot of oxygen. Henk Bolhuis explaining the ins and outs of microbial mats on the beautiful isle of Texel.