Deforestation tends to make climates drier and more extreme, with hotter summers and colder winters.
Most herds summering in the study area come from this area.
The main cause was diarrhoeal disease, especially in hot summers, and the great majority of those who died were partially or, especially, wholly artificially fed.
The viable seed content in sheep dung was measured by greenhouse germination of dung collected monthly in the summers of 1998 and 1999.
During the summers, student volunteers (probationers) from institutions of higher learning helped run the station and do research.
In both 1984 and 1985, the summers were extremely hot and dry.
Children are invited back to camp in subsequent summers, allowing for longitudinal investigation of children's functioning over time.
The intention is to complete all measuring in three one-month periods spread over three separate summers.