. An ecogeographic analysis of the herpetofauna of the Yucatan Peninsula . 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 21 to 24 October 1976. The Xpujil study site is located ap- proximately km west of
. An ecogeographic analysis of the herpetofauna of the Yucatan Peninsula . 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 21 to 24 October 1976. The Xpujil study site is located ap- proximately km west of the village of Xpujil (18° 30' N, 89° 24' W), Gam- peche, Mexico, at an elevation of ap- proximately 250 m. Vegetation in this area, which has been characterized by Duellman (1965a) as quasi-rainforest, is a lower forest than at Tikal, but many of the same species occur, including Achras zapota, Cedrela mexicana, and Bursera simaruba. Palms are uncommon. The canopy is party closed and the under- story is a dense tangle of small vines, shrubs and saplings. The Xpujil site lies within the dry tropical forest formation of Holdridge (1967), and has a tropical rainy climate (Amw of the Koeppen clas- sification; Vivo Escoto, 1964). I worked the Xpujil site from 1 to 12 October 1974. The Santa Rosa site is located ap- proximately 12 km east-southeast of the town of Santa Rosa (19° 58' N, 88° 53' W), near the west edge of Laguna Ghi- chancanab, Yucatan, Mexico, at an ap- proximate elevation of 31 m. Here the forest is comparable in height to that at Xpujil, but more open. The dominant tree is Bursera simaruba. Small palms, shrubs, and saplings comprise the under- story, and grasses and other herbs cover the forest floor, especially where the can- opy is suflBciently open to allow pene- tration of considerable light. The Santa Rosa site lies within the very dry tropical forest formation of Holdridge (1967), and has a tropical wet-and-dry climate (Aw of the Koeppen classification;
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Keywords: ., book, bookcentury1900, booksubjectamphibians, booksubjectreptiles
