27 



TEMPERATURE (C) 



PRECIPITATION (MM) 



300 



1 r 

 J A S O 



MONTH 



1— MEAN MINIMUM TEMP 

 PRECIPITATION 



-B- MEAN MAXIMUM TEMP 

 • - PARTIAL MONTH 



Figure 2-3. Mean monthly temperature and precipitation at X-Hazil Sur, Quintana Roo, Mexico, during 

 July 1989-December 1990. 



1990, while the lowest temperature recorded was 9°C on 27 December 1989 (temperature was 

 measured by a thermometer ±1C° and read daily at 0700 h to obtain the minimum and maximum 

 temperatures for the preceding 24 h). Rainfall during 1 January-12 December 1990 was 1,277.3 mm, 

 slightly above average (rainfall was measured by a rain gauge and read daily at 0700 h). Local 

 residents reported that during the past several years it had been drier than normal and that the rainy 

 season had begun 1-2 months later than normal. 



The ejido was composed of four major land-use and vegetation types: Plots & Gardens (6.07% 

 of ejido). Early Secondary Forest (5.18%), Late Secondary Forest (88.52%), and Other (0.23%; Table 

 2-1). Sites categorized as Plots & Gardens mainly were located near the three villages or along roads, 

 while sites categorized as forests usually were located relatively far from the roads (Figure 2-4). The 

 ejido was accessible through many types of thoroughfares. These roads and trails greatly influenced 

 subsistence and economic activities in the ejido. The main road was Mexico Route 307, a hard surface 



