Articles by Author: Robc Hart

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  1. A LIMNOLOGICAL PROFILE OF THE UPPER OKAVANGO DELTA AT LOW WATER LEVEL

    A LIMNOLOGICAL PROFILE OF THE UPPER OKAVANGO DELTA AT LOW WATER LEVEL

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    Selected limnological attributes of the Okavango Delta panhandle were measured during a brief summer survey of “open-water” habitats extending from the permanent mainstream channel, through contiguous off-channel lagoons and still backwaters, to seasonally isolated floodplain lagoon and temporary pool biotopes...
  2. Limnology of southern African coastal lakes — new vistas from Mozambique

    Limnology of southern African coastal lakes — new vistas from Mozambique

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Fourteen mostly small, isolated, and relatively deep coastal inundation lakes were surveyed during the cool season (August) of 1996. No thermal or chemical stratification existed, but near-bottom hypoxia was evident in several systems. Ionic conductivity varied quite widely, but was...
  3. Groundwater seeps as potentially important refugia for freshwater fishes on the Eastern Shores of Lake St Lucia, KwaZulu-Natal, South Africa

    Groundwater seeps as potentially important refugia for freshwater fishes on the Eastern Shores of Lake St Lucia, KwaZulu-Natal, South Africa

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The freshwater wetlands on the Eastern Shores of Lake St Lucia provide an important habitat for freshwater fishes, including a number of IUCN Red Listed species. The ecology of these wetlands is influenced greatly by water flowing from the large...
  4. Biology of the redspotted tonguesole <em>Cynoglossus zanzibarensis</em> (Pleuronectiformes: Cynoglossidae) on the Agulhas Bank, South Africa

    Biology of the redspotted tonguesole <em>Cynoglossus zanzibarensis</em> (Pleuronectiformes: Cynoglossidae) on the Agulhas Bank, South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The biology of the redspotted tonguesole Cynoglossus zanzibarensis, a common African cynoglossid inhabiting the Agulhas Bank, South Africa, is described. Growth studies based on sectioned sagittal otoliths revealed that C. zanzibarensis is relatively fast-growing and long-lived, attaining ages >8 years...