Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-22T19:45:55.293Z Has data issue: false hasContentIssue false
  • English
  • Français

Presence of Seeds in the Planetary Boundary Layer: Some Earlier Records

Discussion of: Shields, E. J., J. T. Dauer, M. J. Van Gessel, and G. Neumann. 2006. Horseweed (Conyza canadensis) seed collected in the planetary boundary layer.

Published online by Cambridge University Press:  20 January 2017

Robert F. Parsons
Robert F. Parsons*
Affiliation:
Department of Botany, La Trobe University, Bundoora, Victoria, Australia 3086
*
Corresponding author's E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

A recent paper (Shields et al. 2006) reports trapping seed of horseweed in the planetary boundary layer (PBL) of the lower atmosphere at heights up to 140 m above ground level. While it claims that seeds have not been trapped from the PBL before, it is shown here that seeds of other weedy composites were trapped at altitudes up to 610 m above ground level in southern Australia more than 40 yr ago.

Keywords

Horseweed, Conyza canadensis (L.) CronqAerial samplingair-borne arthropodslong-range wind dispersalweedy composites
Type
Research Article
Information
Weed Science , Volume 55 , Issue 2 , April 2007 , pp. 185
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Shields, E. J., Dauer, J. T., Van Gessel, M. J., and Neumann, G. 2006. Horseweed (Conyza canadensis) seed collected in the planetary boundary layer. Weed Sci. 54:1063–1067.CrossRefGoogle Scholar
Trewick, S. A., Paterson, A. M., and Campbell, H. J. 2007. Hello New Zealand. J. Biogeog. 34:1–6.Google Scholar
White, T. C. R. 1970a. Dispersal of exotic weed plants. Aust. J. Sci. 32:370.Google Scholar
White, T. C. R. 1970b. Airborne arthropods collected in South Australia with a drogue-net towed by a light aircraft. Pacific Insects. 12:251–259.Google Scholar
Wright, S. D., Yong, C. G., Wichman, S. R., Dawson, J. W., and Gardner, R. C. 2001. Stepping stones to Hawaii: a trans-equatorial dispersal pathway for Metrosideros (Myrtaceae) inferred from nrDNA (ITS + ETS). J. Biogeog. 28:769–774.Google Scholar