Geography Reference
In-Depth Information
sponsible for vicariance, and mobilism, which allows the expansion of distri-
butions.
Craw and Heads (1988) wrote an interesting interpretation of
Space,
Time, Form,
postulating that it represents the deconstruction of Darwin's
(1859)
Origin of Species.
In the latter, Darwin followed the sequence vari-
ation under domestication and natural selection (chapter 1), the problem
of species (chapter 2), struggle for existence (chapter 3), natural selection
(chapter 4), laws of variation (chapter 5), difficulties on the theory (chapter
6), instinct (chapter 7), objections to the theory (chapter 8), hybridization
(chapter 9), the geological record (chapters 10 and 11), biogeography
(chapters 11 and 12), the natural system, morphology, and embryology
(chapter 13), and conclusions (chapter 14). Croizat's topic reversed Dar-
win's order: biogeography and its relationship to geology (chapters 1-3),
evolution in relation to biogeography (chapter 4), laws of growth (chapters 5
and 6), the problem of species (chapter 7), and natural selection (chapter 8).
This shows clearly the preeminence Croizat gave to space, in contrast with
Darwin's emphasis on form.
Figure 3.6
Diagram showing the origin of two species after the development of a
barrier (modified from Croizat 1964:188).
In the early times of panbiogeography few scientists seem to have read
seriouslyortohaveconsideredCroizat'scontributions.Corner(1959),Cran-
well (1962), Brundin (1966), Aubréville (1969, 1970, 1974a, 1974b, 1975),
and Ball (1976) are some of the few authors who commented on these ideas
