Journal•ISSN: 0038-2167
South African forestry journal
Taylor & Francis
About: South African forestry journal is an academic journal. The journal publishes majorly in the area(s): Pinus patula & Pinus radiata. It has an ISSN identifier of 0038-2167. Over the lifetime, 968 publications have been published receiving 7676 citations.
Topics: Pinus patula, Pinus radiata, Eucalyptus, Pruning, Woody plant
Papers published on a yearly basis
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TL;DR: A synthesis was made of published and unpublished data on plant species richness in fynbos with different levels of invasion and different histories of control, indicating a marked reduction in richness of indigenous plant species in invaded areas.
Abstract: Synopsis The reduction of species richness of indigenous plants is one of the major problems associated with the presence of dense stands of invasive alien trees and shrubs in the Fynbos Biome of the Cape Province, South Africa. A synthesis was made of published and unpublished data on plant species richness in fynbos with different levels of invasion and different histories of control. Linear regressions of species richness on the log of quadrat size were significant for both uninvaded fynbos and fynbos under dense stands of alien trees and shrubs. The slopes of the regression equations did not differ significantly between invaded and uninvaded sites, but elevations were significantly different, indicating a marked reduction in richness of indigenous plant species in invaded areas. The linear regression of species richness on quadrat size for cleared areas was not significant, but quadrats at most cleared sites showed species richness values intermediate to those of uninvaded fynbos and dense stands of a...
178 citations
TL;DR: Results showed that foliage projective cover was less patchy and mostly denser in mature than in senescent regrowth, and proteaceae seedling regeneration was significantly reduced in old stands, but the ratio of seedlings to adults was similar in mature and old veld.
Abstract: Some consequences of long intervals between fires were studied in fynbos of the Swartberg Mountains. Results showed that foliage projective cover was less patchy and mostly denser in mature than in senescent regrowth. Proteaceae seedling regeneration was significantly reduced in old stands, but the ratio of seedlings to adults was similar in mature and old veld. Proteaceae seedlings were more common after the autumn than the spring burn. Non-Proteaceous dicot seedlings were significantly fewer in regenerating senescent veld. Some consequences of long intervals between fires and features of dispersal in fynbos are discussed.
103 citations
TL;DR: Interspecific hybrids are becoming increasingly important to the South African forest industry, and have made it possible to extend tree planting to areas traditionally considered off-site for plantation forestry.
Abstract: SYNOPSIS Interspecific hybrids are becoming increasingly important to the South African forest industry. Presently, hybrids of the subtropical eucalypts are the most prominent. Many thousands of hectares of selected clonal plantings have been established. The most common hybrid combinations are Eucalyptus grandis crossed with either E. camaldulensis, E. urophylla or E. tereticornis. These hybrids have made it possible to extend tree planting to areas traditionally considered off-site for plantation forestry. On these marginal sites, the hybrids growth and survival outperformed the pure species, and they are consistently more resistant to diseases, pests, cold, heat and drought. Through developing hybrid combinations, land closer to processing sites can now be planted. The wood and growth properties of the hybrids are normally intermediate between the parent species, but superior growth to both parent species is common. Great care must be exercised in selecting the parents for the hybrid combinations, whic...
79 citations
TL;DR: Induction and maturation of somatic embryos, production of plantlets and hardening-off procedures are detailed.
Abstract: SYNOPSIS Culture conditions for the in vitro propagation of Eucalyptus grandis via somatic embryogenesis were investigated. Induction and maturation of somatic embryos, production of plantlets and hardening-off procedures are detailed.
79 citations
TL;DR: In this paper, the authors analysed Fynbos vegetation with three differing fire histories by means of a stratified systematic sample of 100 plots and found that short rotation burning resulted in a reduction in plant cover, height and biomass, as well as in the elimination of longer lived seed regenerating shrubs.
Abstract: SYNOPSIS Fynbos vegetation with three differing fire histories was analysed for floristic composition and structure by means of a stratified systematic sample of 100 plots. The three treatments (fire histories) investigated were short rotation burning (about six years), longer rotation burning (about 15 to 20 years) and protection from fire for 37 years. Short rotation burning resulted in a reduction in plant cover, height and biomass, as well as in the elimination of longer lived seed regenerating shrubs. Species diversity was relatively high and short graminoid and herb species dominated the vegetation. Longer intervals between burning resulted in a high cover and large mean plant height in mature 21-year-old vegetation, but species diversity was relatively low and undergrowth species were of much reduced importance. In vegetation protected for 37 years, large shrubs were reduced in importance due to high mortality and low recruitment; as a result undergrowth species showed some signs of recovery, and s...
77 citations