Articles by Keyword: Tadpole Morphology

Search results for Tadpole Morphology

We found 63 results for you
  1. Resolving the confusion: <em>Amietia vertebralis</em> and <em>A. umbraculata</em> tadpole morphology

    Resolving the confusion: <em>Amietia vertebralis</em> and <em>A. umbraculata</em> tadpole morphology

    Item type: Journal Article • Journal: African Zoology
    Morphological similarities between the tadpoles of Amietia umbraculata and A. vertebralis have led to confusion and incorrect descriptions and identifications in the literature. Based on 33 body measurements and ratios we revised the morphological descriptions of the tadpoles of the...
  2. Improved criteria for classifying hydric soils in South Africa

    Improved criteria for classifying hydric soils in South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    There is an increasing awareness of the ecological and agricultural importance of hydric (wetland) soils. Because of the scarcity of information in South Africa, this study aimed to critically examine systems currently being applied to the hydric soils of South...
  3. Grondgeassosieerde, lineêre plantegroeipatrone in die Warmbadomgewing van die Limpopo-provinsie van Suid-Afrika

    Grondgeassosieerde, lineêre plantegroeipatrone in die Warmbadomgewing van die Limpopo-provinsie van Suid-Afrika

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Lineêre mikroreliëfverskynsels wat op lugfoto's soos vingerafdrukpatrone vertoon en bestaande uit boomryke kruine en grasryke trôe is op die voethang van die Baviaansberg, Warmbadomgewing (Suid-Afrika) beskryf. Vir die doel om die oorsprong van die verskynsels te verklaar is van 'n...
  4. The relationship between soil morphology and soil water regime: preliminary results in the Weatherley catchment

    The relationship between soil morphology and soil water regime: preliminary results in the Weatherley catchment

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Soil water contents were measured for five years at Weatherley, an intensively instrumented catchment in the north eastern part of the Eastern Cape Province. Soil water contents are expressed in terms of average duration of saturation with water above 0.7...
  5. Indications of ferrolysis and structure degradation in an Estcourt soil and possible relationships with plinthite formation

    Indications of ferrolysis and structure degradation in an Estcourt soil and possible relationships with plinthite formation

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Geographic associations of duplex soils, like the Estcourt form, and plinthic soils, like the Avalon and Westleigh forms, such as are found in the Eastern Free State, are recognised worldwide. These soils share redox morphology. In duplex soils, the redox...
  6. Interpretation of digital soil photographs using spatial analysis: I. Methodology

    Interpretation of digital soil photographs using spatial analysis: I. Methodology

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Systems for the evaluation of soil wetness use soil colour extensively. The determination of soil colour normally relies on the user's perception of colour and usually employs a colour matching system, e.g. Munsell Soil Color Charts. The South African soil...
  7. Interpretation of digital soil photographs using spatial analysis: II. Application

    Interpretation of digital soil photographs using spatial analysis: II. Application

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Colour variation in digital photographs of soils was quantified and classified meaningfully, using ArcView Spatial Analyst. This procedure holds great promise for the unbiased and quantitative determination of soil colour properties and statistical correlation with related soil hydrological conditions. The...
  8. Genetic distance analysis of elite cassava (<em>Manihot esculenta</em> Crantz) genotypes in Malawi using morphological and AFLP marker techniques

    Genetic distance analysis of elite cassava (<em>Manihot esculenta</em> Crantz) genotypes in Malawi using morphological and AFLP marker techniques

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Cassava is the second most important staple food crop in Sub-Saharan Africa and is also an important food and cash crop in Malawi. A prerequisite for any genetic improvement programme is knowledge of the extent of genetic variation present between...
  9. Nature and distribution of South African plinthic soils: Conditions for occurrence of soft and hard plinthic soils

    Nature and distribution of South African plinthic soils: Conditions for occurrence of soft and hard plinthic soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The relevance of using redox morphology and irreversible hardened material to classify soft and hard plinthic soil forms is often questioned as the paleoclimate of South Africa varied significantly. Since the origin of the Soil Classification System of South Africa...
  10. Evaluation and identification of old and new macadamia cultivars and selections at Pietermaritzburg

    Evaluation and identification of old and new macadamia cultivars and selections at Pietermaritzburg

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Newer and older cultivars and selections of macadamias have been evaluated at Pietermaritzburg over periods of from five to 35 years. In their sixth year, trees of some of the newer selections have produced good yields of over 10 kg...