Articles by Keyword: Generalised Linear Modelling

Search results for Generalised Linear Modelling

We found 142 results for you
  1. Patterns in abundance, population structure and biology of knife prawn <em>Haliporoides triarthrus</em> on deep-water trawl grounds off eastern South Africa

    Patterns in abundance, population structure and biology of knife prawn <em>Haliporoides triarthrus</em> on deep-water trawl grounds off eastern South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    The deep-water trawl fishery along the KwaZulu-Natal coast of South Africa targets several crustacean species, with the knife (or pink) prawn Haliporoides triarthrus contributing most of the catch. Logbook data of fishing effort and catch between 1988 and 2010 were...
  2. Whole-tree sap flow responses to soil water and weather variables for <em>Pinus radiata</em> and three indigenous species in a southern afrotemperate forest region

    Whole-tree sap flow responses to soil water and weather variables for <em>Pinus radiata</em> and three indigenous species in a southern afrotemperate forest region

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    In a water-scarce country such as South Africa, timber and fibre production often stands in conflict with catchment water yields. The optimal provision of both is sought. Forest hydrological experiments improve our understanding of the soil–plant–atmosphere continuum and facilitate the...
  3. Evaluering en kalibrering van CERES-Maize. 1. Nie-lineêre regressie om genetiese parameters te bepaal

    Evaluering en kalibrering van CERES-Maize. 1. Nie-lineêre regressie om genetiese parameters te bepaal

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Die genetiese parameters van die meeste plaaslike mielie cultivars wat as inset van CERES-Maize benodig word, is nog nie bepaal nie. Sodanige parameters kan met behulp van bestaande oesdata en fenologiese datums, uit veldproewe afgelei word. Programmatuur kan gebruik word...
  4. GLM-based standardization of the catch per unit effort series for South African west coast hake, focusing on adjustments for targeting other species

    GLM-based standardization of the catch per unit effort series for South African west coast hake, focusing on adjustments for targeting other species

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Catch per unit effort (cpue) data for the South African west coast Cape hakes Merluccius capensis and M. paradoxus were standardized by applying the Generalized Linear Modelling (GLM) technique. The resulting standardized series indicated that resource abundance declined at a...
  5. Optimising Nursery Operation Schedules with Multiperiod Linear Programming

    Optimising Nursery Operation Schedules with Multiperiod Linear Programming

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    A dynamic multiperiod linear programming model which addresses nursery scheduling is presented. Due to its dynamic nature, it provides a means to manage risks and uncertainties such as disease, rootstrike, germination and fluctuating demands. By optimising the whole production process,...
  6. Movement patterns of coastal bottlenose dolphins in the presence of a fast-flowing, prevailing current: shore-based observations at Cape Vidal, South Africa

    Movement patterns of coastal bottlenose dolphins in the presence of a fast-flowing, prevailing current: shore-based observations at Cape Vidal, South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    The presence and movement of Indo-Pacific bottlenose dolphins Tursiops aduncus were investigated using shore-based observations made during a humpback whale Megaptera novaeangliae migration survey at Cape Vidal, South Africa, undertaken between June and October 1988–1991. Occurrence was analysed as counts...
  7. Seasonal fluctuations in occurrence of inshore Bryde's whales in Plettenberg Bay, South Africa, with notes on feeding and multispecies associations

    Seasonal fluctuations in occurrence of inshore Bryde's whales in Plettenberg Bay, South Africa, with notes on feeding and multispecies associations

    Item type: Journal Article • Journal: African Journal of Marine Science
    Seasonal fluctuations in the occurrence of inshore South African Bryde's whales Balaenoptera edeni were investigated between November 2005 and June 2008. Sighting data were collected in Plettenberg Bay on the south-east coast of South Africa. Bryde's whale occurrence was modelled...
  8. Simultaneous selection for multiple traits in sugarcane breeding populations using logistic regression models

    Simultaneous selection for multiple traits in sugarcane breeding populations using logistic regression models

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Simultaneous selection for multiple traits in plant breeding increases the value of cultivars to growers. Visual selection is inefficient while multivariate statistical analysis is too complicated for early stages. The objective of this study was to demonstrate logistic regression models...
  9. The autumn occurrence and spatial distribution of cetaceans in the waters of Mauritania during a geophysical survey in 2012

    The autumn occurrence and spatial distribution of cetaceans in the waters of Mauritania during a geophysical survey in 2012

    Item type: Journal Article • Journal: African Journal of Marine Science
    This study aimed to identify the occurrence and spatial distribution of cetaceans in Mauritanian waters (eastern Atlantic). A geophysical survey was conducted over 92 days between September and December 2012. Over 967 km was surveyed, with 1 017 h of...
  10. Distribution and habitat use of Indo-Pacific bottlenose dolphins Tursiops aduncus along the south coast of South Africa

    Distribution and habitat use of Indo-Pacific bottlenose dolphins Tursiops aduncus along the south coast of South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    The distribution and habitat use of the Indo-Pacific bottlenose dolphin Tursiops aduncus along the south coast of South Africa was investigated using bi-monthly boat-based surveys, from 2013 to 2016, over a distance of 145 km between the Goukamma and Tsitsikamma...