. The Ecology of arboreal folivores : a symposium held at the Conservation and Research Center, National Zoological Park, Smithsonian Institution, May 29-31, 1975. Folivores; Forest ecology; Leaves; Mammals; Mammals. There were several other groups in areas around the study site but only one group (Group 2) had any contact with Group 1. Group 2 spent 69 of the 172 days of observation in the study area. At the begin- ning of the study, Group 2 contained 6 adult males, 15 adult females, 12 juveniles, and 2 infants. This group frequently split into subgroups of 27 and 8. Results Rainfall and temp
. The Ecology of arboreal folivores : a symposium held at the Conservation and Research Center, National Zoological Park, Smithsonian Institution, May 29-31, 1975. Folivores; Forest ecology; Leaves; Mammals; Mammals. There were several other groups in areas around the study site but only one group (Group 2) had any contact with Group 1. Group 2 spent 69 of the 172 days of observation in the study area. At the begin- ning of the study, Group 2 contained 6 adult males, 15 adult females, 12 juveniles, and 2 infants. This group frequently split into subgroups of 27 and 8. Results Rainfall and temperature On the basis of rainfall, the study site experienced 2 distinct and separate seasons, a 5-month dry season (December-April) and a 7-month wet season (May- November) (Figure 1). The total rainfall for the study period was 1431 mm. The pattern of rainfall was somewhat unusual dur- ing the study period. Normally, a small dry season {el veranillo) occurs in June or July with most of the rain falling before and after the veranillo; however, June, July, and August were the wettest months with October being relatively drier (Figure 1). The long dry season began in late December 1972 and continued until April 27, 1973. The onset of the dry season was gradual with very small amounts of rainfall after November 15, 1972 (ranging from mm to mm).The last rain fell on December 21, 1972 ( mm). Following that day, no rain fell for 126 days. The first rain of the wet season fell on April 27, 1973 (110 mm). This was not only the beginning of the wet season, but also the day with the greatest amount of rainfall during the study. The sudden on- set of the wet season is typical of the seasonal tran- sition from dry to wet and contrasts with the gradual onset of the dry season. It rained 108 of 358 days during the study. There was an average of 9 days of rain per month. The months of January, February, and March were with- out rain (Figure 1). The maximum daily temperature experie
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Keywords: ., bookcentury1900, bookcolle, booksubjectleaves, booksubjectmammals
