Individual study: Complete rather than partial clearance of ponds was more effective management for the recolonisation of bearded stonewort in England
Furnborough P., Kirby P., Lambert S., Pankhurst T., Parker P. & Piec D. (2011) The effectiveness and cost efficiency of different pond restoration techniques for bearded stonewort and other aquatic taxa. Report on the Second Life for Ponds project at Hampton Nature Reserve in Peterborough, Cambridgeshire. Froglife report.
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Create ponds for great crested newts
A replicated, before-and-after study in 2008–2010 of 13 created ponds in a nature reserve with many existing ponds in England, UK (Furnborough et al. 2011) found that some created ponds were colonized by small numbers of great crested newts Triturus cristatus. One pond had six and another 18 newts in one year. However, the majority of ponds that contained newts had only one or two animals. In winter 2008–2009, 13 new ponds were created. Torchlight surveys were undertaken in March-June 2009–2010.
A replicated, controlled, before-and-after study in 2008–2010 of nine restored ponds in a reserve in England, UK (Furnborough et al. 2011) found that dredging and vegetation clearance did not appear to significantly increase great crested newt Triturus cristatus numbers in the first two years. Results were difficult to interpret but suggested that complete restoration and partial manual restoration did not significantly change numbers of newts. Data suggested that partial mechanical restoration may have had resulted in slight increases in newts. In winter 2008–2009, three groups of four ponds had sediment and vegetation removed by: partial manual clearance, partial mechanical clearance with an excavator, complete mechanical clearance or no management (controls). Torchlight surveys were undertaken before restoration and in March–June 2009–2010. Survey effort varied between years.