Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . , since individual large mammals have relatively long potential lifespans. The second method—live censusing—is more practical, but it requireseither that an entire population be studied or that there be some way ofobtaining a reasonably large, unbiased sample. It further requires a method forageing live individuals reliably, often only by observing them from a third method—taUying deaths—is, in fact, usually the most practical, sinceit may be based on skeletal material, which is relatively easy to sample
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . , since individual large mammals have relatively long potential lifespans. The second method—live censusing—is more practical, but it requireseither that an entire population be studied or that there be some way ofobtaining a reasonably large, unbiased sample. It further requires a method forageing live individuals reliably, often only by observing them from a third method—taUying deaths—is, in fact, usually the most practical, sinceit may be based on skeletal material, which is relatively easy to sample and age. Some representative mortality (dx) profiles obtained by the death-tallymethod are presented here in Figure 3. All the profiles have been cast so thatthe number of age classes in each is approximately equal, while the second ageclass generally contains the youngest sexually mature individuals. Each profile UNGULATE MORTALITY, LANGEBAANWEG AND ELANDSFONTEIN 55 ^v ?« ^ ill ^^^^^l^^ ?iiilllllllllli T^ =.^^ llllini II , , , , , pomminiiiiiiiimipiiiii^^J I.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
