. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. QUATERNARY OSTRACODS FROM SOUTH-WESTERN AFRICA 395. WR WB LUD OR CC CP 35"S O 03 Fig. 6. Mean and ranges of the maximum latitudinal distribution of the most abundant species. Vertical scale is degrees of latitude (S). WR = Walvis Ridge, WB = Walvis Bay, LUD = Liideritz, OR = Orange River, CC = Cape Columbine, CP = Cape Peninsula. The mean values are calculated on the number of sample sites; thus they represent weighted centres of distribution and not average positions between northern and southe
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. QUATERNARY OSTRACODS FROM SOUTH-WESTERN AFRICA 395. WR WB LUD OR CC CP 35"S O 03 Fig. 6. Mean and ranges of the maximum latitudinal distribution of the most abundant species. Vertical scale is degrees of latitude (S). WR = Walvis Ridge, WB = Walvis Bay, LUD = Liideritz, OR = Orange River, CC = Cape Columbine, CP = Cape Peninsula. The mean values are calculated on the number of sample sites; thus they represent weighted centres of distribution and not average positions between northern and southern limits. Figure 7 shows the total and averaged across-shelf distribution of the most abundant species. With the exception of two species (Krithe spatularis and K. capensis), all the most abundant species have their upper depth limits (UDL) shallower than 200 m ( in the inner-mid-shelf area), whereas, with the exception of three species (the least abundant of this category), they all have their LDL deeper than 200 m. The curve of averaged depth distributions has gradient changes separating two shelf faunas (at 250 m, I and II), and upper and mid-slope faunas (350 m, III, and 450 m, IV). Figures 6 and 7 indicate that, with few exceptions {Coquimba birchi, Buntonia deweti, B. gibbera, Bensonia k. robusta and Xestoleberis africana), the most abundant species are relatively cosmopolitan in their distribution along and across the shelf (unhke many of the rarer taxa). Regional variations in the abundances of several of the most abundant species were briefly considered by Dingle (1992), who presented along-shelf variations of the dominant. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
Size: 1597px × 1564px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
