Articles by Author: Aring S H Oslash Ines

Search results for Aring S H Oslash Ines

We found 74 results for you
  1. Bathymetry, substrate and fishing areas of Southeast Atlantic high-seas seamounts

    Bathymetry, substrate and fishing areas of Southeast Atlantic high-seas seamounts

    Item type: Journal Article • Journal: African Journal of Marine Science
    Most of the Southeast Atlantic Ocean is abyssal, and global bathymetries suggest that only ∼3.2% of the areas beyond national jurisdiction (ABNJ; also known as the high seas, as defined in the United Nations Convention on the Law of the...
  2. Megabenthos and benthopelagic fishes on Southeast Atlantic seamounts

    Megabenthos and benthopelagic fishes on Southeast Atlantic seamounts

    Item type: Journal Article • Journal: African Journal of Marine Science
    In a descriptive study of megafauna of several Southeast Atlantic seamounts, multiple video-transects on upper slopes and summits documented the occurrence of benthic invertebrate taxa, primarily corals, regarded as indicators of vulnerable marine ecosystems (VMEs) as defined in international guidelines...
  3. The effects of a deferred grazing system on rangeland vegetation in a north-western, semi-arid region of Tanzania

    The effects of a deferred grazing system on rangeland vegetation in a north-western, semi-arid region of Tanzania

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The present study assessed the effects of deferred grazing management on rangeland condition using aboveground biomass, vegetation cover and species composition as indicators of range condition. The experiment was based on traditionally conserved exclosures (ngitili). Data were collected in Shinyanga...
  4. Phenotypic variation in fruit, seed and seedling traits of nine <em>Uapaca kirkiana</em> provenances found in Malawi

    Phenotypic variation in fruit, seed and seedling traits of nine <em>Uapaca kirkiana</em> provenances found in Malawi

    Item type: Journal Article • Journal: The Southern African Forestry Journal
    Uapaca kirkiana is one of the priority indigenous fruit tree species for domestication in southern Africa. Natural populations of U. kirkiana are declining due to deforestation, forest fragmentation and wildfires. Knowledge of genetic variation is prerequisite for development of conservation...
  5. Do Ostriches Struthio camelus reject parasitic eggs by making use of colour as a cue?

    Do Ostriches Struthio camelus reject parasitic eggs by making use of colour as a cue?

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    The Ostrich communal breeding system involves several females laying in a single nest. Only the ‘major’ female and the territorial male, however, provide parental care from incubation to fledging of chicks. Eggs are turned and displaced frequently upon the onset...
  6. Escapement of Cape hakes under the fishing line of the Namibian demersal sampling trawl

    Escapement of Cape hakes under the fishing line of the Namibian demersal sampling trawl

    Item type: Journal Article • Journal: African Journal of Marine Science
    Swept area surveys in Namibian waters provide input data to the stock assessment model. To evaluate the model's predictions, it is important to understand the catch efficiency of sampling trawls. The objective of this study was to establish whether Cape...
  7. Seasonal Fluctuations and Diversity of Bark and Wood-boring Beetles in Lowland Forest: Implications for management Practices

    Item type: Journal Article • Journal: South African Forestry Journal
    The phenology and diversity of wood-living beetles attacking Cedrela mexicana, Khaya nyasica and Milicia excelsa were observed for one year with weekly window-flight-trap collections. A total of 150 species (10 known to be common pests of timber) were collected, most...
  8. Precision in systematic trawl surveys as assessed from replicate sampling by parallel trawling off Namibia

    Precision in systematic trawl surveys as assessed from replicate sampling by parallel trawling off Namibia

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Following independence of Namibia in 1990, abundance of that country's hake stocks was monitored by trawl surveys conducted by the Norwegian F.R.V. Dr Fridtjof Nansen using a systematic survey design. Precision from such designs is considered to be better than...
  9. Towards a catchability constant for trawl surveys of Namibian hake

    Towards a catchability constant for trawl surveys of Namibian hake

    Item type: Journal Article • Journal: South African Journal of Marine Science
    A trawl catches only a portion of the fish in its path. The term catchability therefore refers to the fraction of the available fish caught. A method was developed and tested to establish catchability constants for trawl surveys of Namibian...
  10. Dynamics of the pelagic component of Namibian hake stocks

    Dynamics of the pelagic component of Namibian hake stocks

    Item type: Journal Article • Journal: South African Journal of Marine Science
    A study was undertaken to investigate the spatial, diurnal and interannual dynamics of the pelagic component of Namibian hake stocks. Data were derived from trawl surveys conducted on board the R.V. Dr Fridtjof Nansen during the period 1991–1999. In addition...