Mission: alien moth survey
|Website results for the alien moth survey, 2011|
We had received positive records from as far north as Newcastle, Carlisle and Dundee, but only the record from Newcastle has been confirmed with a photograph. So, up until the end of 2011, the horse-chestnut leaf-miner still had not been confirmed in Scotland.
Mission: pest controllers
|Website results for the pest controller mission, 2011|
Like last year, there was, overall, a very small number of pest controllers that emerged.
One person noted that there was a big difference in the numbers of pest controllers reared from trees that were very close together, which is an intriguing finding.
Although the graph shows a huge proportion of pest controllers in the square covering Cornwall, it is worth noting that these graphs do not show the 'sample size'. We received just two records from Cornwall, and both had quite high numbers of pest controllers. We received a record from Bath with a similarly high number of pest controllers, but lots of other records with very few pest controllers, which evens out the results. Of course, it may also be something specific about Cornwall - but in science it is wise not to base conclusions on small sample sizes.