Abstract
The management of reindeer ranges is a complicated task as indicated both by the complexity of the normative analyses required and the mismanagement observed in real and laboratory settings. The present report is a user's manual to a decision-tool that attempts to strike a balance between complex normative analyses and practical decision-making. A simulator is provided to give decision-makers experience with the tool and to build intuition for strategies. Several cases are used to illustrate the use of the decision-tool and to demonstrate how even scarce and imprecise data can yield important insights. The project has been financed by "Nordisk ministerråd" ("Nordic Council of Ministers") under the program "Nordiska miljöstrategin för jord- och skogsbruk 1996-1999" ("Nordic Environmental Strategies for Agriculture and Forestry 1996-1999"). It was initiated and administered by "Nordisk organ for reinforskning" (NOR) ("Nordic Council for Reindeer Research").
Highlights
The adaptation of reindeer herds to available food resources is complicated
The management of reindeer ranges is a complicated task as indicated both by the complexity of the normative analyses required and the mismanagement observed in real and laboratory settings
The present report is a user's manual to a decision-tool that attempts to strike a balance between complex normative analyses and practical decision-making
Summary
The adaptation of reindeer herds to available food resources is complicated. one can say the management of most renewable resources is complicated. It is our experience that even with poor data on lichen densities, for instance using only rough guesses about the development in lichen thickness over ten-year periods, the decision-tool gives interesting and useful results In this regard, be aware that only a rough estimate of the growth curve can be good enough. The number we recommend for g-msy is based on investigations of the growth of individual lichen plants, 64 grams dry matter per square meter per year The size of this parameter will depend on what type of lichen is dominating the pastures and on the local climate, in particular summer precipitation, see Table 3. I f you are afraid of depleting lichen, you should perhaps adjust your estimate of Consump. and waste upwards as a safeguard
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