Articles by Author: J P Furstenberg

Search results for J P Furstenberg

We found 8 results for you
  1. Studies on the Psammolittoral Meiofauna of Algoa Bay

    Item type: Journal Article • Journal: Zoologica Africana
    The meiofauna communities at three tide levels on a sheltered and an exposed beach have been analysed and compared. Twenty-nine nematode, eight harpacticoid and two mystacocarid species and species groups have been used. A similarity analysis indicated three distinct communities,...
  2. Migrations of Sandy Beach Meiofauna

    Item type: Journal Article • Journal: Zoologica Africana
    The meiofauna at higher tide levels on a sheltered beach has been found to undergo vertical migrations correlated with the alternate drying and wetting of the sand during the tidal cycle. This movement may be modified by temperature differences between...
  3. An Ecophysiological Study of the Meiofauna of the Swartkops Estuary

    Item type: Journal Article • Journal: Zoologica Africana
    Environmental correlations with mean, as well as seasonal, distribution and abundance of the meiofauna in two exposed beaches in the Swartkops Estuary, near Port Elizabeth, were elucidated. Population densities showed a direct relationship with particle size. Consequent on this, oxygen...
  4. The Standardization of an Apparatus for the Mixing of Soil Samples for Nematode Extractions

    Item type: Journal Article • Journal: Zoologica Africana
    Quantitative determination of nematode populations in soils frequently necessitates the mixing of representative soil samples to form a homogeneous, compound sample from which the nematodes are extracted. A mixing apparatus was developed and standardized with the aid of a spectrophotometric...
  5. Quantitative Extraction of Meiofauna: A Comparison of Two Methods

    Item type: Journal Article • Journal: Zoologica Africana
    Two methods for the quantitative extraction of meiofauna from natural sandy sediments were investigated and compared: Cobb's decanting and sieving technique and the Oostenbrink elutriator. Both techniques were more efficient with pre-fixed samples than with fresh samples. The results indicated...
  6. An Ecophysiological Study of the Meiofauna of the Swartkops Estuary

    Item type: Journal Article • Journal: Zoologica Africana
    Benthic oxygen demand was measured by dark and light bottle technique at two beaches in the Swartkops estuary, near Port Elizabeth. Respiration of nematodes was measured by polarographic micro-rcspirometer technique. Secondary production was 82 g C/m2/y in sandy areas and...
  7. A comparison of two extractors for separating meiobenthic nematodes from fine-grained sediments

    Item type: Journal Article • Journal: South African Journal of Zoology
    Two methods for the quantitative extraction of meiobenthic nematodes from fine-grained sediments were investigated and compared: (i) Oostenbrink-sugar flotation and (ii) Ludox flotation. The results show that Ludox flotation yielded between approximately 200 and 700% morenematodes. A conversion graph for...
  8. Studies on <em>Haliplectus</em> Cobb, 1913. Description of <em>Haliplectus algoensis</em> n. sp. (Nematoda: Haliplectidae, Suborder Leptolaimina)

    Item type: Journal Article • Journal: South African Journal of Zoology
    Specimens of the genus Haliplectus Cobb, 1913 which exhibited remarkable morphological detail were collected from coastal dune slacks in the Alexandria dune field east of the Sundays River, near Port Elizabeth, on the shore of Algoa Bay. These specimens differ...