tag:blogger.com,1999:blog-7553355011221187801.post6957791632212633032..comments2023-05-29T09:56:45.316+01:00Comments on Glamorgan Moth Recording Group: Less common moths at garden trap sitesVC41Mothshttp://www.blogger.com/profile/17263945533123756002noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7553355011221187801.post-37743604719350325072012-09-13T20:45:34.579+01:002012-09-13T20:45:34.579+01:00Another possible factor is that moths in general h...Another possible factor is that moths in general have become scarcer and are arriving at trap in smaller numbers. This probably affects scarce and local species as well as the common ones, so scarce and local species are getting numerically scarcer increasing the odds against them coming to a particular trap. Sites with a longer trapping history would have benefited from the comparative abundance of moths in the early days. There are species I used to get annually, a decade ago, that I now haven't seen for years.Mark Evanshttps://www.blogger.com/profile/02372785801699168219noreply@blogger.comtag:blogger.com,1999:blog-7553355011221187801.post-10581016576431355012012-09-12T12:56:50.382+01:002012-09-12T12:56:50.382+01:00I'm sure you're right that the longer you ...I'm sure you're right that the longer you trap at a site the greater the % of uncommon species you'll record.<br /><br />It stands to reason that uncommon species will generally occur in smaller numbers than common species. Also, rarer species tend to be more sedentary so will probably wander less often from their habitats into your garden. Both of these factors mean they're less likely to turn up in the trap, but over a long time period you might get the odd one.GMThttps://www.blogger.com/profile/08759152282751126808noreply@blogger.com