The influence of rainfall and grazing on the population and compositional response of some Savanna grasslands.

Simple item page
dc.contributor.authorO'Connor, Timothy Gordon
dc.date.accessioned2019-07-30T12:51:31Z
dc.date.available2019-07-30T12:51:31Z
dc.date.issued1991
dc.descriptionA thesis submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Doctor of Philosophyen_ZA
dc.description.abstractThe study aimed to differentiate the effect of rainfall and grazing on the compositional change of savanna grasslands, and to explain responses in terms of the life history patterns of the main species, An extinction prone perennial grass under heiry grazing was identified as a palatable, obligate seed reproducer with low seed production and poor dispersal (e.g. Themeda triandra and Reteropogon contortus), wnich could become extinct if the established population and the seed bank were eliminated. Aristrida species were expected to show the converse pattern. Grazing was manipulated for three or five years, and rainfall for one year, on a sandveld site, and two clay soil sites which supported the same species in different amounts, respectively. (Abbreviation abstract)en_ZA
dc.description.librarianAndrew Chakane 2019en_ZA
dc.identifier.urihttps://hdl.handle.net/10539/27836
dc.language.isoenen_ZA
dc.subjectVegetation dynamics.en_ZA
dc.subjectGrassland ecology.en_ZA
dc.subjectPlant communities.en_ZA
dc.subjectGrasslands -- Effect of rainfall on.en_ZA
dc.subjectGrasslands -- Effect of grazing on.en_ZA
dc.titleThe influence of rainfall and grazing on the population and compositional response of some Savanna grasslands.en_ZA
dc.typeThesisen_ZA
Files
Original bundle
Now showing 1 - 2 of 2
No Thumbnail Available
Name:
OConnor Timothy Gordon._The Influence Of Rainfall_001.pdf
Size:
12.68 MB
Format:
Adobe Portable Document Format
Description:
Download
No Thumbnail Available
Name:
OConnor Timothy Gordon._The Influence Of Rainfall_002.pdf
Size:
2.2 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
ETD Collection