. Bulletin - United States National Museum. Science. RODENTS OF LIBYA 27. Figure 2.—I, Mediterranean Faunal Area; IA, Coastal Plain Province; IB, Cyrenaican Plateau Province; II, Saharan Steppe Faunal Area; IIA, Transitional Desert Province; IIB, Tripolitanian Gebel Province; III, Saharan Desert Faunal Area; IIIA, Cyrenaican Desert Province; IIIB, Fezzanese Desert Province. Although the Mediterranean littoral and steppe regions of Libya cover a much smaller area than the Saharan portion, they are more varied, both climatically and physiographically. As a consequence, these northern portions of
. Bulletin - United States National Museum. Science. RODENTS OF LIBYA 27. Figure 2.—I, Mediterranean Faunal Area; IA, Coastal Plain Province; IB, Cyrenaican Plateau Province; II, Saharan Steppe Faunal Area; IIA, Transitional Desert Province; IIB, Tripolitanian Gebel Province; III, Saharan Desert Faunal Area; IIIA, Cyrenaican Desert Province; IIIB, Fezzanese Desert Province. Although the Mediterranean littoral and steppe regions of Libya cover a much smaller area than the Saharan portion, they are more varied, both climatically and physiographically. As a consequence, these northern portions of Libya support a more varied rodent fauna and are thus divisible into a greater number of faunal provinces. Portions of these faunal provinces, and in some cases, the entire province, possess rodents which demonstrate a high degree of en- demism; these areas act as centers of differentiation for several kinds of rodents. Genetic fixation among populations of Libyan rodents lias arisen either through long periods of spatial (geographic) isolation or as a more local response to variations in the character of the climate, soil, and plant cover. Mediterranean Faunal Area The Mediterranean Faunal Area comprises all the coastal areas of Libya, including the Cyrenaican Plateau. This faunal area is composed of the rather discrete Coastal Plain Province and the Cyrenaican. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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