An ecogeographic analysis of the An ecogeographic analysis of the herpetofauna of the Yucatan Peninsula ecogeographicana00leej Year: 1980 YUCATAN HERPETOFAUNA 19 town of La Libertad (16° 47' N, 90° 07' W), Department of El Peten, Guatemala, at an approximate elevation of 210 m. The site is situated on a savanna char- acterized by open expanses of grass through which are scattered small shrubby flat-topped trees, chiefly the nanze (Byrsonima crassifolia) (Fig. 12). Islands of typical forest edge trees such as Bursera simaruba, and Cecropia spp. dot the Hat landscape. Lundell (1937) reported in
An ecogeographic analysis of the An ecogeographic analysis of the herpetofauna of the Yucatan Peninsula ecogeographicana00leej Year: 1980 YUCATAN HERPETOFAUNA 19 town of La Libertad (16° 47' N, 90° 07' W), Department of El Peten, Guatemala, at an approximate elevation of 210 m. The site is situated on a savanna char- acterized by open expanses of grass through which are scattered small shrubby flat-topped trees, chiefly the nanze (Byrsonima crassifolia) (Fig. 12). Islands of typical forest edge trees such as Bursera simaruba, and Cecropia spp. dot the Hat landscape. Lundell (1937) reported in detail on the botany of the central Peten savannas, and Stuart (1935) in his discussion of the herpetofauna of these savannas described and illustrated the vegetation. The La Libertad site lies within the humid tropical forest forma- tion of Holdridge (1967), and has a tropical rainy climate (Afw of the Koep- pen classification; Vivo Escoto, 1964). I worked at the La Libertad site from 15 to 20 October 1976. The Tikal site is located approxi- mately km south-southwest of the famous archaeological site of Tikal (17° 20' N, 89° 39' W), Department of El Peten, Guatemala, at an approximate elevation of 283 m. The site is situated in a medium high forest, the canopy of which averages 25 to 35 m in height and is suflBciently open to permit penetration of considerable light. Common tree spe- cies include Brosimum alicastrum, and Achras zapota. Occasional Sivietenia macrophijlla are encountered. The thorny escoba palm (Crysophila argentea) and Fig. 12.—Typical savanna in the vicinity of the La Libertad study site. various species of Piper are common in the understory (Fig. 13). Bartlett (1935) gave a detailed account of the forest in the Tikal area. The site lies within the dry tropical forest formation of Hold- ridge (1967), and has a tropical rainy climate (Amw of the Koeppen classifi- cation; Vivo Escoto, 1964). I worked the Tikal site from 9 to 27 August 1974, and from
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