Articles by Keyword: Benguela Upwelling Ecosystem

Search results for Benguela Upwelling Ecosystem

We found 153 results for you
  1. Hydromedusae Off the Orange River Mouth, Southern Africa

    Hydromedusae Off the Orange River Mouth, Southern Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    A total of 242 zooplankton samples from the upper 100 m of the water column was collected discontinuously from March 1997 to January 1999 off the Orange River mouth on the west coast of southern Africa. Six species of hydromedusae...
  2. Quantification and representation of potential spatial interactions in the southern Benguela ecosystem

    Quantification and representation of potential spatial interactions in the southern Benguela ecosystem

    Item type: Journal Article • Journal: African Journal of Marine Science
    This work explores the potential spatial interactions between 13 key commercial species of the southern Benguela ecosystem: sardine Sardinops sagax, anchovy Engraulis encrasicolus, round herring Etrumeus whiteheadi, horse mackerel Trachurus trachurus capensis, chub mackerel Scomber japonicus, chokka squid Loligo vulgaris...
  3. Cross-shelf observations of diet and diel feeding behaviour of the bearded goby <em>Sufflogobius bibarbatus</em> off Namibia

    Cross-shelf observations of diet and diel feeding behaviour of the bearded goby <em>Sufflogobius bibarbatus</em> off Namibia

    Item type: Journal Article • Journal: African Journal of Marine Science
    The diet of the bearded goby Sufflogobius bibarbatus was studied at two 48 h stations off the Namibian coast. The inner station (120 m) was characterised by a deep layer of low-oxygen bottom water (<0.5 ml DO l−1 or <10%...
  4. Comparing internal and external drivers in the southern Benguela and the southern and northern Humboldt upwelling ecosystems

    Comparing internal and external drivers in the southern Benguela and the southern and northern Humboldt upwelling ecosystems

    Item type: Journal Article • Journal: African Journal of Marine Science
    Trophic models of three upwelling ecosystems, the southern Benguela (South African), southern Humboldt (Chilean) and northern Humboldt (Peruvian) systems, have been fitted to catch, abundance and fishing mortality time-series. Three drivers were considered during the model fitting: internal forcing by...
  5. Environmental influence on phytoplankton communities in the northern Benguela ecosystem

    Environmental influence on phytoplankton communities in the northern Benguela ecosystem

    Item type: Journal Article • Journal: African Journal of Marine Science
    An investigation of surface phytoplankton communities was undertaken on the shelf of the northern Benguela upwelling ecosystem during austral autumn (May) and spring (September), along latitudinal transects at 20° S and 23° S, from 2 to 70 nautical miles offshore,...
  6. Observations on the Diel Vertical Distribution of Hydromedusae in the Southern Benguela

    Observations on the Diel Vertical Distribution of Hydromedusae in the Southern Benguela

    Item type: Journal Article • Journal: African Journal of Marine Science
    Diel vertical migration (DVM) of six common species of hydromedusae was investigated during two drogue studies conducted in St Helena Bay on the west coast of South Africa in February 1995. Clytia spp., Obelia spp. and Bougainvillia macloviana, were largely...
  7. Ecosystem approach to fisheries management in the southern Benguela: a workshop overview

    Ecosystem approach to fisheries management in the southern Benguela: a workshop overview

    Item type: Journal Article • Journal: African Journal of Marine Science
    A workshop was held in Cape Town in December 2002 to introduce the concept of an ecosystem approach to fisheries (EAF) management in the southern Benguela, and to examine the options for implementing an EAF in South Africa. The workshop...
  8. An ecosystem approach to fisheries in the southern Benguela context

    An ecosystem approach to fisheries in the southern Benguela context

    Item type: Journal Article • Journal: African Journal of Marine Science
    The 2001 Reykjavík Declaration on Responsible Fisheries in the Marine Ecosystem and the Plan of Implementation of the 2002 World Summit on Sustainable Development highlighted the need in fisheries to look beyond considering only the target species and to consider...
  9. Contributions of the Benguela ecology programme to pelagic fisheries management in South Africa

    Contributions of the Benguela ecology programme to pelagic fisheries management in South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    In 1982, the Benguela Ecology Programme (BEP) created a formal, multi-institutional research partnership in South Africa. During the next two decades, the BEP directed many aspects of pelagic ecosystem research in the southern Benguela upwelling region, aiming to improve fisheries...
  10. An ecosystem framework for fisheries management in the southern Benguela upwelling system

    An ecosystem framework for fisheries management in the southern Benguela upwelling system

    Item type: Journal Article • Journal: African Journal of Marine Science
    A "four-step framework" for applying ecosystem approaches to fisheries management in the southern Benguela is proposed. First, static ecosystem models can be used to highlight important interactions by assessing the net trophic impacts of each species on all the others...