Geography Reference
In-Depth Information
Figure 5.11
Biogeographic analysis of afromontane spiders by Griswold (1991). (a) Areas
of endemism analyzed; (b) general area cladogram obtained.
References
Farris, J. S. 1988.
Hennig86 reference.
Version 1.5. Port Jefferson, N.Y.: Author.
Griswold, C. E. 1991. Cladistic biogeography of afromontane spiders.
Australian Sys-
tematic Botany
4:73-89.
Kluge, A. G. 1988. Parsimony in vicariance biogeography: A quantitative method and
a greater Antillean example.
Systematic Zoology
37:315-328.
The deserts of northern Mexico and the southern United States harbor a particular
biotathatisofgreatbiogeographicinterest.Axelrod(1979,1983)proposedamod-
el to explain the formation of these deserts, where desert floras developed in local
drysitesduringtheTertiarydryingtrend, drawingarid-adapted speciesfromboreal
shrub steppes, Great Plains grasslands, Mexican highlands, Sinaloan thornscrub,
and Californian chaparral. Semideserts attained their maximum extension during
the Early Pliocene and were reduced in area during the moist Late Pliocene and
