Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum |
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Page 449
... is barren of the species , has a mean mud content of 30 per cent ( compared to
50 % for all sediments in the two populated areas ) suggests that a minimum
mean mud threshold ( 30 % ) is one of the factors necessary to sustain the
species .
... is barren of the species , has a mean mud content of 30 per cent ( compared to
50 % for all sediments in the two populated areas ) suggests that a minimum
mean mud threshold ( 30 % ) is one of the factors necessary to sustain the
species .
Page 451
Low dissolved oxygen values ( < 2 ml / l ) may also be important limiting factors in
the latitudinal distribution of the species . A major source of oxygen deficient
water lies to the north of the Orange Shelf , where Chapman & Shannon ( 1985 )
13 ...
Low dissolved oxygen values ( < 2 ml / l ) may also be important limiting factors in
the latitudinal distribution of the species . A major source of oxygen deficient
water lies to the north of the Orange Shelf , where Chapman & Shannon ( 1985 )
13 ...
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Common terms and phrases
AAIW Abbreviations abundance adult ancestor Antarctic Intermediate approximately Atlantic Atlantic Deep Water Atlantic Poseidonamicus authors barriers Bathyal centred continental margin continental shelf core Cretaceous deep-water described Dingle discovery dissolved oxygen distribution DSDP environments Eocene factors Figure genus give given illustrations important included indicated Internal late latter least living lower mean mud content NADW North Note occurrences ocularis Orange Shelf ostracod fauna ostracod population parameters peak Percentage Pleistocene plotted Poseidonamicus panopsus sp possible probably prominent Quaternary Recent recorded recovered references region relatively rise salinity salinity minimum zone samples scars sediment separated shallow shallow-water Shannon shows sighted species similar slope smoothed South south-western Africa southern Africa species specimens suggested SW Cape SW Pacific Poseidonamicus Table temperature Tertiary values valves Walvis water depth Water mass western Whatley Whatley et al zone