Paper on the impacts of spatial distributions of bowl traps
We now have a paper out that looks at some aspects of the spatial distributions of bees captured in bowl traps. That paper is attached.
A couple of key results (In my opinion) were that a neighboring bowl trap's impact on an adjacent bowl extended only was a short 3-5m. Beyond 5m capture rates were steady. There also appeared to be a rather low rate of clumping of captures across bowls in arrays and transects.
The biggest mystery for all trapping techniques is .... where are these bees coming from? Which individuals are local and which are dispersers? Are there sex and age differences? How do such dispersers (presuming they exist) impact the results and interpretation of bowl studies.....
Sam Droege sdroege@...
w 301-497-5840 h 301-390-7759 fax 301-497-5624
USGS Patuxent Wildlife Research Center
BARC-EAST, BLDG 308, RM 124 10300 Balt. Ave., Beltsville, MD 20705
On the sandy downs beside the sea
She found a feather, silver and black -
Silver as salmon, black as jet,
Blown from a gull's or a magpie's back.
"Look!" she cried with a swift delight,
"The lovliest thing this evening yet -
A plume of faery, sable and white,
A flutter of pierrot mystery,
Oh look!" He nodded a careless head -
"Just do to clean my pipe", he said.
P Bees are not optional.