Photo's updated 5 January 2012
. For the latest photo's scroll down the thumbnails.
This gallery shows the progress for the control of a very damaging invasive water fern called Azolla Filiculoides using a biological control method with the weevil Stenopelmus Rufinasus.
This is a small pond teeming with wildlife. It has had its ups and downs over recent years with the biggest threat to this little pond being a non-native invasive water fern called Azolla filiculoides
(water fern). It is a very invasive pond fern that can ultimately kill the majority of wildlife within the water body if control/elimination is not implemented.
A very effective biological control method using a non-native weevil called Stenopelmus rufinasus will get this under control, but will take many weeks before any substantial progress can be seen.
A link containing the information about the invasive weed Azolla:http://www.nhm.ac.uk/nature-online/species-of-the-day/biodiversity/economic-impact/azolla-filiculoides/index.html
A link to a very informative case study of the use of the weevil Stenopelmus rufinasus used as biological control for Azolla:http://invasivespeciesireland.com/wp-content/uploads/2010/11/Case_Study_4_Biological_control.pdf
Another link to an information sheet about Azolla:http://www.invasivespeciesscotland.org.uk/invasive_non_native_species/water_fern.asp