• Introduction
• Desmids of Drenthe
  • Actinotaenium
  • Bambusina
  • Closterium
  • Cosmarium
  • Cylindrocystis
  • Desmidium
  • Euastrum
  • Gonatozygon
  • Haplotaenium
  • Hyalotheca
  • Mesotaenium
  • Micrasterias
  • Netrium
  • Penium
  • Pleurotaenium
  • Roya
  • Spirotaenia
  • Spondylosium
  • Staurastrum
  • Staurodesmus
  • Teilingia
  • Tetmemorus
  • Tortitaenia
  • Xanthidium

Desmids of Drenthe

In 2007 I started a survey project of the desmids of the province of Drenthe. The final goal is to create distribution maps of all species found in this province.

In July 2010 I have data on about 550 samples in my database. In the map below you can see from which 1x1 km square I collected data. Some 1x1 km squares contain several ponds, moorland pools, bog hollows and fenns, while others are agricultural areas without any natural waters. As the amount of desmids in ditches, canals and other organically polluted (eutrophic) waters is normally quite low and the amount of ditches and canals in certain parts of the province is quite high,  I decided to skip those waters in the survey.
So the map of examined squares is yet far from complete, and never will be filled completely.

During the research I found many species and made pictures of them. I decided to create a website to assist myself and others in determining those desmids.

In the menu at the left you can select the genus:

• When you click the genus name a gallery of thumbnails with the species I found in the province of Drenthe will be shown.
• Click on a thumbnail to see a larger image
• Click on this image to see an even larger image (when available).

All images are copyright Marien van Westen

Comments on this site are welcome via the contact form (select Contact in the menu left).