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Fig. Species accumulation curves for the three vertebrate taxa (Fig. inventories for plants, reptiles and amphibians, birds, and mammals. 1. AMPHIBIANS AND REPTILES ASSOCIATED WITH THE PRAIRIE DOG GRASSLANDS ECOSYSTEM AND SURROUNDING AREAS AT THE JANOS CASAS GRANDES COMPLEX, NORTHWESTERN CHIHUAHUA, MEXICO Georgina S ANTOS-B ARRERA 1, Jes s P ACHECO 2 and Gerardo C EBALLOS 2 1Museo de Zoolog a, Facultad de Ciencias, UNAM, A. P. 70-399, C. P. 04510, M XICO D.F. Society for the Study of Amphibians and Reptiles Diet and Reproductive Biology of the Viviparous Lizard Sceloporus torquatus torquatus (Squamata: Phrynosomatidae) Author(s): Manuel Feria Ortiz, Adrián Nieto-Montes de Oca and Isaías H. Salgado Ugarte Reviewed work(s): Source: Journal of Herpetology, Vol. 1 (Mar., 2001), pp. 2 Instituto de Ecolog a, UNAM… Location of the Lacandona region (1 ) within the Mayan Forest (y ellow square), indicating mayor Mayan Forest regions as nominated in each country (Be lize, Guatemala, and Mexico). Amphibians and reptiles represent an important group of vertebrates in Mexico; on a global scale 10% of the biodiversity of these groups is found in the country, attaining extraordinarily high levels of endemism (60.7% and 53.7%, respectively). sequence, carefully prepared and shelved in the Colección Nacional de Anfibios y Reptiles, Instituto de Biología, UNAM. Inventories for each taxon are clearly preliminary. Mammals, although presenting a flat accumulation curve, were sampled in a small area, and the true fauna is doubtless larger. * Correspondence: jalcocer@unam.mx Received: 19 August 2020; Accepted: 26 November 2020; Published: 28 November 2020 Abstract: The species richness, composition, abundance, and biomass of pelagic rotifers were determined in 17 karst lakes of the “Lagunas de Montebello” National Park, Chiapas, Mexico. 3) indicate that inventories for birds are likely complete. The species richness of the region (21 species) and single lakes (1–12 species) was smal 35, No.

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