The concern of this article is the language and ontology of negative externalities. Four discourses on the financially successful industry of salmon farming in Norway are critically analyzed and deconstructed. The discourses are: "high turnover discourse", "technology optimism discourse", "first nature discourse" and "traditionalist discourse". Groups defending various discourses differ in their interpretations of a) human/nature relations i.e. either ecocentric, anthropocentric or biocentric, and b) in their respective approach to either a transformative, adaptive or reactive logic. By linking interpretations, concepts and logic inherent to these discourses, it is possible to make conclusions on their degree of coherency. The leading discourses are maintained in language through strategic framing and overdetermination. These linguistic mechanisms are revealed in the discursive application of the concepts of sustainability and wild fish.  Rather than to surrender to relativism, the article recommends integration of realism and deconstruction.Key words: Atlantic salmon farming, food production, critical discourse analysis, negative externalities, soft constructionism, parsimony, political ecology, sustainability.

Despite being an economic success and generating considerable profit, the Norwegian salmon farming industry face environmental challenges that need to be solved. Since 2014, all new licenses to farm salmon are labelled either "light-green", dark-green" or "development licenses". The industry is nevertheless characterized by the open net-pen as a hegemonic technology, and is susceptible to both cognitive and political lock-in. In the article, it is defined which narratives on "greening criteria" that are dominant and an analysis is presented on how narratives influence new licenses for salmon farming. The data is derived from 52 qualitative interviews and a broad qualitative analysis of trends and debates in the industry. From the perspective of evolutionary economic geography and the subconcept path dependency, narratives on greening criteria for future salmon farming are divided in three categories: path extension, modest path renewal and strong path renewal. The findings reveal that although most licenses are linked to mere path extension, development licenses might disrupt this trend.

2012): 'Embedded and disembedded practice in the firm-place nexus: a study of two world-leading manufacturers of ski equipment in the Lillehammer ski cluster', Geografiska Annaler: Series B, Human Geography 94 (2): 177-194.ABSTRACT. Studies of agglomerations and clusters in economic geography anticipate strong interdependency between firms and places. However, despite the extensive literature, we lack a coherent micro-theoretical foundation. The relationship between the rationales and practices of firms remains somewhat unspecified. In this article, we analyse the diversity of rationales and practices in a firm-place nexus. Possible rationales for firm practice are outlined, examining the assumptions of three, main theoretical perspectives in economic geography. This microeconomic approach is applied through an analysis of the two key firms in the Lillehammer skiing industry cluster in Norway. The study contributes to a more nuanced understanding of how the agency of firms influence and are influenced by co-location.