Articles by Keyword: Community Wide Metrics

Search results for Community Wide Metrics

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  1. Protected nearshore shallow and deep subtidal rocky reef communities differ in their trophic diversity but not their nutritional condition

    Protected nearshore shallow and deep subtidal rocky reef communities differ in their trophic diversity but not their nutritional condition

    Item type: Journal Article • Journal: African Journal of Marine Science
    Large physical changes that alter reef macrobenthos and fish assemblages occur with increasing depth, so the biological processes that regulate communities at different depths are expected to diverge. We used analyses of stable isotopes (δ13C and δ15N) and fatty acids...
  2. Identification of leaf rust resistance genes in <em>Triticum</em> species for transfer to common wheat

    Identification of leaf rust resistance genes in <em>Triticum</em> species for transfer to common wheat

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A total of 877 Triticum accessions (27 species) were screened for resistance to leaf rust (Puccinia recondita f. sp. tritici) using mixed inoculum of pathotypes UVPrt2, UVPrt3, UVPrt8, UVPrt9 and UVPrt13. Of these, 206 accessions were resistant/moderately resistant to all...
  3. Identification of <em>Thinopyrum distichum</em> chromosomes responsible for its salt tolerance

    Identification of <em>Thinopyrum distichum</em> chromosomes responsible for its salt tolerance

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A Thinopyrum distichuml 4x rye (Secale cereale) hybrid with genomes J1 dJ2 dRR was pollinated with diploid rye and mostly yielded F1 offspring with 21 chromosomes (two complete rye genomes and seven Thinopyrum chromosomes). Apparently, the closely related homoeologous chromosomes...
  4. Transfer of rust resistance genes from <em>Triticum</em> species to common wheat

    Transfer of rust resistance genes from <em>Triticum</em> species to common wheat

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A programme aiming to transfer leaf rust resistance genes identified in a collection of wild Triticum species was initiated in 1993. In 2000, 25 promising backcross populations were available, 19 of which bred true for resistance. Seedlings of the above...
  5. Development of SCAR markers for a <em>Thinopyrum distichum</em> chromosome that appears to be involved in salt tolerance

    Development of SCAR markers for a <em>Thinopyrum distichum</em> chromosome that appears to be involved in salt tolerance

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Sixty-seven F-1 plants from the backcross: Thinopyrum distichum/tetraploid ‘Henoch’ rye//diploid ‘Henoch’ rye were cloned, tested for salt tolerance (2–4 replications per genotype) and ranked. Sixty RAPD primers were tested on the parental lines. Nine of these produced Thinopyrum specific fragments...
  6. Microbial community function and structure on coal mine discard under rehabilitation

    Microbial community function and structure on coal mine discard under rehabilitation

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The rehabilitation of coal mine discard is problematic, especially since the lack of measures to evaluate the success of rehabilitation in terms of the self-sustainability of soil ecosystems established on these sites. In this study, the potential for using microbial...
  7. The effect of canola (<em>Brassica napus</em>) as a biofumigant on soil microbial communities and plant vitality: a pot study

    The effect of canola (<em>Brassica napus</em>) as a biofumigant on soil microbial communities and plant vitality: a pot study

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Canola (Brassica napus) may be incorporated into soil as a biofumigant for control of pathogens such as Sclerotinia sclerotiorum. Yet, the effect of biofumigants on natural microbial communities required to maintain soil functions is still unclear. A pot experiment with...
  8. A geometric property of the Sierpiński carpet

    A geometric property of the Sierpiński carpet

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    The main aim of this paper is to find formulae for the computation of the geodesic metric on the Sierpí nski carpet. This is accomplished by introducing carpet coordinates. Subsequently we show the equivalence of the Euclidean and the geodesic...
  9. The automorphism groups of domains in complex space: a survey

    The automorphism groups of domains in complex space: a survey

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    We consider recent developments in the study of automorphism groups of domains in complex space. Particular attention is paid to results with a basis in geometry.
  10. AIDS communications through social networks: catalyst for behaviour changes in Uganda

    AIDS communications through social networks: catalyst for behaviour changes in Uganda

    Item type: Journal Article • Journal: African Journal of AIDS Research
    Objective: To investigate distinctive communications through social networks which may be associated with population behaviour changes and HIV prevalence declines in Uganda compared to other countries.