Relationship between diaspore characteristics and distribution of grasses around sheep camps on the northern Tablelands of New-South-Wales

Rogers R.W. and Whalley R.D.B. (1989) Relationship between diaspore characteristics and distribution of grasses around sheep camps on the northern Tablelands of New-South-Wales. Australian Journal of Botany, 37 6: 501-510. doi:10.1071/BT9890501


Author Rogers R.W.
Whalley R.D.B.
Title Relationship between diaspore characteristics and distribution of grasses around sheep camps on the northern Tablelands of New-South-Wales
Journal name Australian Journal of Botany   Check publisher's open access policy
ISSN 1444-9862
Publication date 1989-01-01
Sub-type Article (original research)
DOI 10.1071/BT9890501
Open Access Status Not yet assessed
Volume 37
Issue 6
Start page 501
End page 510
Total pages 10
Language eng
Subject 1105 Ecology, Evolution, Behavior and Systematics
1110 Plant Science
Abstract Twenty-seven common grasses on the Northern Tablelands of New South Wales were classified according to their occurrence on or off sheep camps in unfertilised natural pastures. A number of seed and seed germination attributes were examined in relation to the distribution of the individual species. Camps had a greater proportion of introduced grasses, and of annual or short-lived perennials, than off-camp zones. The sheep camp grasses in general had heavier seeds, more rapid germination, and their seeds in general did not have a sharp callus, antrorse hairs on the callus, or awns. If awns were present on sheep camp species a lower proportion were hygroscopically active than for off-camp species. There were no differences in the presence or absence of accessory floral structures in the dispersal unit, hairs on the coleorrhiza or in the shapes of seeds between sheep camp and off-camp grasses. The differences in seed and seed germination characteristics found between sheep camp and off-camp species are explained in terms of the differences in environment (water stress and damage by sheep) encountered by grasses germinating and establishing on and off the sheep camps.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 08 Aug 2017, 00:10:50 EST by System User