Articles by Author: K Kristensen

Search results for K Kristensen

We found 6 results for you
  1. Gastropod distribution in Lakes George and Edward, Uganda, relative to copper and cobalt levels

    Gastropod distribution in Lakes George and Edward, Uganda, relative to copper and cobalt levels

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Published data show that Lake George, Uganda, has a poorer gastropod fauna than Lake Edward, to which it is connected through the Kazinga Channel. We conducted a study in 2001 to test whether this could be linked to copper (Cu)...
  2. Gastropod diversity, distribution and abundance in habitats with and without anthropogenic disturbances in Lake Victoria, Kenya

    Gastropod diversity, distribution and abundance in habitats with and without anthropogenic disturbances in Lake Victoria, Kenya

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    We investigated freshwater gastropod diversity, abundance and distribution in habitats with and without anthropogenic disturbance in two localities, Ndere in the Winam Gulf and Mbita Point, Lake Victoria, Kenya, from May 2002 to January 2004. A total of 133 984...
  3. Population dynamics and ecology of freshwater gastropods in the highveld and lowveld regions of Zimbabwe, with emphasis on schistosome and amphistome intermediate hosts

    Population dynamics and ecology of freshwater gastropods in the highveld and lowveld regions of Zimbabwe, with emphasis on schistosome and amphistome intermediate hosts

    Item type: Journal Article • Journal: African Zoology
    From November 1998 to October 2000, patterns of distribution and seasonal population fluctuations of snails and factors influencing them were investigated in six dams and six streams in the highveld region, and in nine dams in the lowveld region of...
  4. Molecular diversity and phylogenetic relationships of the gastropod genus <em>Melanoides</em> in Lake Malawi

    Molecular diversity and phylogenetic relationships of the gastropod genus <em>Melanoides</em> in Lake Malawi

    Item type: Journal Article • Journal: African Zoology
    The freshwater snails belonging to the genus Melanoides Olivier, 1804 are widespread across tropical regions of the world and endemic species have evolved in the African Lakes Malawi, Mweru and Tanganyika. The endemic Melanoides species of Lake Malawi have been...
  5. Sympatric <em>Biomphalaria</em> species (Gastropoda: Planorbidae) in Lake Albert, Uganda, show homoplasies in shell morphology

    Sympatric <em>Biomphalaria</em> species (Gastropoda: Planorbidae) in Lake Albert, Uganda, show homoplasies in shell morphology

    Item type: Journal Article • Journal: African Zoology
    The three known sympatric Biomphalaria species that occur in Lake Albert; B. choanomphala, B. stanleyi and B. sudanica, were studied using both molecular (COI, 16S and ITS) and shell morphometric data. An unidentified sample of 18 Biomphalaria specimens from Lake...
  6. Geostatistical modelling of the spatial life history of post-larval deepwater hake <em>Merluccius paradoxus</em> in the Benguela Current Large Marine Ecosystem

    Geostatistical modelling of the spatial life history of post-larval deepwater hake <em>Merluccius paradoxus</em> in the Benguela Current Large Marine Ecosystem

    Item type: Journal Article • Journal: African Journal of Marine Science
    Optimal and sustainable management of fish resources cannot be ensured without a thorough understanding of the migration patterns and population (demographic stock) structure. Recent studies suggest that these aspects of the economically and ecologically important deepwater hake Merluccius paradoxus are...