Relationship of aphid density to altitude
Johnson, C. G. and Penman, Howard Latimer
(1951)
Relationship of aphid density to altitude.
Nature, 168 (4269).
pp. 337-338.
10.1038/168337a0
THE dispersal of small insects to high altitudes by convection and turbulence is known to produce an insect-density gradient in which density decreases with height1,2. The distribution has never been expressed mathematically; and since the insect population of the air varies considerably from hour to hour, and most of the observations at the different heights were made at different times, mathematical analysis would have yielded little of value.
| Item Type | Article |
|---|---|
| Open Access | Not Open Access |
| Additional information | Times Cited: 18 Johnson, cg penman, hl 18 Macmillan magazines ltd London |
| Date Deposited | 05 Dec 2025 10:01 |
| Last Modified | 19 Dec 2025 14:43 |