Mats Morell Adaptations to crises and weather related harvest fluctuations: Peasant households in East Central Sweden in late 18th and early 19th century Abstract Through case studies of three households, well documented in diaries and land survey acts this paper discusses how late 18th and 19th century Scandinavian farm households acted in response to, or in anticipation of, weather related harvest fluctuations. Regional and national data on weather, harvests and prices are used as well as parish level data. I am interested in whether (and if so how) households managed to adapt their land-use, so it could offer the ecosystem services needed, without evocating ecological or social imbalances threatening further functioning of the land-use pattern or the social survival of the household, but also the extent to which they had routinized strategies to recover from great imbalances imposed upon them by weather related crises. The studied households are located the northern part of the Lake Mälaren area characterized by surplus production of rye and barley marketed in the nearby iron producing district. By the mid-19th century oats emerged as an important crop both for sales and as on-farm-fodder in a dairy economy, which expanded by the late 19th century. The area is not particularly fragile, but there is a tendency for drought in early summers, which increased the risks of fodder shortages. Two households are studied before the radical enclosures in the early 19th century. One is studied after the radical enclosures, which dissolved the village as a collaborating entity, with open fields, common pastures and common forestland.