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A 3D Printed Pollen Trap for Bumble Bee (Bombus) Hive Entrances
Published on: July 9, 2020
Enclosed bark as a pollen trap
Science (New York, N.Y.)
|September 1, 1967
Abstract:
Counts were made of pollen in traps formed by enclosed bark in two remnants of bristlecone pine, Pinus aristata Engelm., from the White Mountains of east-central California. The traps, dated by tree-rings at A.D. 350 and 1300 B.C., contained a major complex of pine-sagebrush pollen and traces of other species, representing the equivalent of the present vegetation.
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