Articles by Author: Rg Barlow

Search results for Rg Barlow

We found 19 results for you
  1. NOTICE

    NOTICE

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
  2. EFFECT OF PHOSPHATE CONCENTRATION ON THE FINE STRUCTURE OF THE CYANOBACTERIUM, <em>MICROCYSTIS AERUGINOSA</em> KÜTZ. EMEND. ELENKIN

    EFFECT OF PHOSPHATE CONCENTRATION ON THE FINE STRUCTURE OF THE CYANOBACTERIUM, <em>MICROCYSTIS AERUGINOSA</em> KÜTZ. EMEND. ELENKIN

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Microcystis aeruginosa toxic strain UV-006 stored a fixed amount of polyphosphate in spherical granules located in the centroplasm. Twenty four hours of phosphate starvation induced use of stored polyphosphate, manifested by reduction in granule numbers. Reintroduction of 2, 4 or...
  3. Climatology and Variability of Sea Surface Temperature and Surface Chlorophyll in the Benguela and Agulhas Ecosystems As Observed by Satellite Imagery

    Climatology and Variability of Sea Surface Temperature and Surface Chlorophyll in the Benguela and Agulhas Ecosystems As Observed by Satellite Imagery

    Item type: Journal Article • Journal: African Journal of Marine Science
    A climatology of satellite-derived sea surface semperature (SST) and surface chlorophyll a concentration (Chl), and their associated variability at time-scales from weeks to years, was constructed for the Benguela and Agulhas ecosystems. Global area coverage data at 4.5 km spatial...
  4. Seasonal variation in phytoplankton in the southern Benguela: pigment indices and ocean colour

    Seasonal variation in phytoplankton in the southern Benguela: pigment indices and ocean colour

    Item type: Journal Article • Journal: African Journal of Marine Science
    Pigment indices and satellite imagery were used to investigate the seasonal variation in phytoplankton in the southern Benguela, with the aid of monthly monitoring on two transect lines. Sea surface temperature images revealed the similarity in thermal conditions during autumn,...
  5. Pigment signatures of phytoplankton composition in the northern Benguela ecosystem during spring

    Pigment signatures of phytoplankton composition in the northern Benguela ecosystem during spring

    Item type: Journal Article • Journal: African Journal of Marine Science
    Pigment indices were used to investigate the distribution and composition of phytoplankton in the northern Benguela during the austral spring of 2000, with sampling being conducted on five transect lines between 19°S and 25°S and at other inshore stations on...
  6. Remotely sensed variability of temperature and chlorophyll in the southern Benguela: upwelling frequency and phytoplankton response

    Remotely sensed variability of temperature and chlorophyll in the southern Benguela: upwelling frequency and phytoplankton response

    Item type: Journal Article • Journal: African Journal of Marine Science
    High-resolution (1km) satellite data from the NOAA AVHRR (Advanced Very High Resolution Radiometer) and OrbView-2 SeaWiFS (Sea-viewing Wide Field-of-view Sensor) are used to investigate the upper layer dynamics of the southern Benguela ecosystem in more detailed space and time scales...
  7. Circulation patterns in the Delagoa Bight, Mozambique, and the influence of deep ocean eddies

    Circulation patterns in the Delagoa Bight, Mozambique, and the influence of deep ocean eddies

    Item type: Journal Article • Journal: African Journal of Marine Science
    An investigation of the circulation patterns and thermohaline structures in the Delagoa Bight, Mozambique, was undertaken during May 2004, August 2004, April 2005, and April 2006, using hydrographic surveys, surface drifters and satellite imagery. Hydrographic and satellite data during May...
  8. Phytoplankton production and adaptation in the vicinity of Pemba and Zanzibar islands, Tanzania

    Phytoplankton production and adaptation in the vicinity of Pemba and Zanzibar islands, Tanzania

    Item type: Journal Article • Journal: African Journal of Marine Science
    Phytoplankton production and physiology were investigated at six selected locations during a research cruise in early October 2007 in Tanzanian coastal waters. The dataset included photosynthesis– irradiance and active fluorescence parameters, phytoplankton absorption coefficients, and pigment concentrations. Primary production was...