Articles by Keyword: Niche Separation

Search results for Niche Separation

We found 30 results for you
  1. Habitat use by indigenous grazing ungulates in relation to sward structure and veld condition

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The objective of the study was to examine the relationships between the habitat requirements of different wild ungulate species, sward structure and veld condition. Veld condition score was correlated with sward height: habitats with high condition scores were dominated by...
  2. Calculating stocking rates for game ranches: Substitution ratios for use in the Mopani Veld

    Calculating stocking rates for game ranches: Substitution ratios for use in the Mopani Veld

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Determination of carrying capacity for mixed‐ or multi‐species grazing systems is complex. Commonly, each species is compared to the standard large stock unit (LSU) used in conventional agriculture. However, this approach does not allow for ecological separation, and thus overlooks...
  3. Compactness in fuzzy function spaces

    Compactness in fuzzy function spaces

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    In [3] we defined a notion of compactness in FCS, the category of fuzzy convergence spaces as defined by Lowen/Lowen/Wuyts [8]. In their paper the latter also introduced a fuzzy convergence structure c-lim for fuzzy function spaces thus proving that...
  4. Separation of Convex Sets and Best Approximation in Spaces with Asymmetric Norm

    Separation of Convex Sets and Best Approximation in Spaces with Asymmetric Norm

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    The aim of the present paper is to show that some results in Banach spaces have their analogs in spaces with asymmetric seminorms. A space with asymmetric seminorm is a pair (X, p),where X is a real vector space and...
  5. <em>T</em>
               <sub>1</sub>-separation in a category

    <em>T</em> <sub>1</sub>-separation in a category

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    A general notion of T 1-separation with respect to a closure operator is introduced in an arbitrary category. This is done by specializing a previously introduced diagram of Galois connections. This naturally yields a dual notion of T 1-coseparation. These...
  6. Developing a site selection tool to assist reintroduction efforts for the Southern Ground-Hornbill <em>Bucorvus leadbeateri</em>

    Developing a site selection tool to assist reintroduction efforts for the Southern Ground-Hornbill <em>Bucorvus leadbeateri</em>

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    The Southern Ground-Hornbill Bucorvus leadbeateri (SGH) is regarded as Vulnerable globally and Endangered in South Africa as a result of losing close to 70% of its range and 50% of its historic population in the country. One of the conservation...
  7. Habitat use pattern of three species of egrets in a small coastal lagoon in Ghana

    Habitat use pattern of three species of egrets in a small coastal lagoon in Ghana

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    The foraging and pattern of habitat use of Western Reef Heron Egretta gularis, Little Egret Egretta garzetta and Great Egret Egretta alba were studied in Sakumo II Lagoon in Ghana to determine the extent of utilisation of non-fish resources by...
  8. Stock separation and life history of <em>Argyrozona argyrozona</em> (Pisces: Sparidae) on the South African east coast

    Stock separation and life history of <em>Argyrozona argyrozona</em> (Pisces: Sparidae) on the South African east coast

    Item type: Journal Article • Journal: African Journal of Marine Science
    Fishery independent biomass surveys and commercial linefish catch returns were used to elucidate the spatial patterns of carpenter Argyrozona argyrozona distributed along the South African continental shelf. Two distinct areas of abundan ce ere determined, one on the central and...
  9. Life-history parameters of white stumpnose <em>Rhabdosargus globiceps</em> (Pisces: Sparidae) in Saldanha Bay, South Africa, with evidence of stock separation

    Life-history parameters of white stumpnose <em>Rhabdosargus globiceps</em> (Pisces: Sparidae) in Saldanha Bay, South Africa, with evidence of stock separation

    Item type: Journal Article • Journal: African Journal of Marine Science
    White stumpnose Rhabdosargus globiceps were sampled over 24 months in Saldanha Bay on the west coast of South Africa. The species is a rudimentary hermaphrodite, with <1% of mature fish having simultaneously developed ovaries and testes. Spawning activity extended from...
  10. Feeding habits and food partitioning between three commercial fish associated with artificial reefs in a tropical coastal environment

    Feeding habits and food partitioning between three commercial fish associated with artificial reefs in a tropical coastal environment

    Item type: Journal Article • Journal: African Journal of Marine Science
    At Réunion Island (south-western Indian Ocean), artificial reefs were submerged in 2003 in a bay and were soon colonised by fish, among which were the highly abundant commercial species Lutjanus kasmira, Priacanthus hamrur and Selar crumenophthalmus. The high concentration and...