This paper discusses and contrasts two mainroles of forestry in light of the debate on theglobal climate. As the main problem is relatedto the increases of the CO<Subscript>2</Subscript>-concentrationin the atmosphere, forests may be viewed aspart of the alleviation of the problem throughtheir function as (i) a source...</subscript>

A sample of 896 Norwegian households participating in a subsidy programme was surveyed in order to evaluate the success of the programme. The programme subsidised investments in new heating technologies, including heat pumps and pellet stoves. The success of the programme was measured by the...

A four-stage model (calves, yearlings, adult female and adult male) of the Scandinavian moose (Alces alces) is formulated. Fecundity is density dependent while mortality is density independent. The paper aims to demonstrate the economic content of such a wildlife model and how this content may...

A static bioeconomic model of a marine reserve allowing asymmetric density dependent migration between the reserve and the fishable area is introduced. This opens for habitat or ecosystem differences allowing different fish densities within and outside a reserve, not described in earlier...

This study develops a model for wildlife migrating seasonally between a conservation area and a neighbouring area. When being outside the conservation area, harvesting takes place by a group of small-scale farmers. The local people have two motives for harvesting; to get rid of ‘problem’...

The paper analyses the relation between demographic transformation, agricultural transformation and land-use pressure within a simple agrarian economy where population is treated both as a cause and consequence of economic changes. In this Malthusian-type of economy, population growth and food...

Total Allowable Catch (TAC) regulating schemes have been introduced in most fisheries. TAC distribution following the Proportional Rule, based on historical catches, implies that harvesters or vessel groups which have captured more in the past and contributed to overfishing are getting larger...

Wild animals can represent both value and nuisance. We consider the moose (Alces alces), which due to seasonal migration causes browsing damage in some areas while creating hunting value in other areas. We first explore a situation when harvesting, following today’s practice in Norway, only...

This paper presents modeling approaches for wildlife and species conservation with a special emphasis on large mammals in a developing country setting. In such countries there are frequently conflicts over land use and species conservation, and institutions for managing conflicts are often weak...