Hi, Everyone - I am hoping folks in the iNat community can advise me on how best to approach a small project to track the number and location of ant-lion larvae that dig pits in a patch of soil beside my driveway. I discovered larvae living there last summer. This year I’d like to record their numbers through the spring and summer by taking still images .
My thought is to photograph the patch in the same way each day with my iPhone camera, then overlay each image with a digital grid of 1-inch squares, aligning the grid using stones for registration, then mark the location of each pit on the grid. Is this a reasonable approach? Is a digital grid that can be used this way already available somewhere or would I have to make one? (I have Elements 11.)
I’m in Columbus, OH. On March 19, I noticed two pits, the first for the year. March 21, a couple more were present. The next day, they were obliterated by windblown fir needles. The photo shows the needle-covered area; the red outline marks the area where most pits occur, partially sheltered by a small burning bush. Does anyone have suggestions that will help me track the pits in some reasonably simple way?