"subsistence activity" is a correct and usable phrase in written English.
It refers to any activity or work that is necessary for one's basic survival or to meet one's basic needs, such as food, shelter, and clothing. Example: In rural areas, farming is the main subsistence activity for many families, providing them with food and income.
Nicaragua's fish resources, however, are relatively unexploited because of lack of investment, and marine fishing remains largely a subsistence activity.
And it seems that, given the size of the stations they've built to do the smoking, it's not a subsistence activity.
The Nuu-chah-nulth moved seasonally to areas of economic importance, returning to their principal villages during the winter when subsistence activity slowed.
Le Ngoc Tuan, director of the Saola nature reserve, which falls under the auspices of the project, regards logging as little more than a subsistence activity for those involved.
According to the anthropologist (and father of seven) Barry Hewlett, who spent two decades studying the Aka, the high level of paternal involvement may be due to the nature of their traditional subsistence activity, the net hunt.
Analysis of the anthropogenic sediments suggests that the Wadi el-Hasa floodplain has not been adequately considered as a component of economic and subsistence activity during the early Islamic period.
Without a clean water supply, local subsistence activities have been devastated.
Criticism of such subsistence activities rarely takes account of the economic necessity that underpins it.
In general, the subsistence activities of men consist of hunting mammals and gathering wild honey.
This would have influenced social life, kinship systems, and subsistence activities.
Logging, mining, colonization, and subsistence activities have all contributed to deforestation.
