Increased mitochondrial DNA diversity in ancient Columbia River basin Chinook salmon Oncorhynchus tshawytscha

The Columbia River and its tributaries provide essential spawning and rearing habitat for many salmonid species, including Chinook salmon (Oncorhynchus tshawytscha). Chinook salmon were historically abundant throughout the basin and Native Americans in the region relied heavily on these fish for thousands of years. Following the arrival of Europeans in the 1800s, salmon in the basin experienced broad declines linked to overfishing, water diversion projects, habitat destruction, connectivity reduction, introgression with hatchery-origin fish, and hydropower development. Despite historical abundance, many native salmonids are now at risk of extinction. Research and management related to Chinook salmon is usually explored under what are termed “the four H’s”: habitat, harvest, hatcheries, and hydropower; here we explore a fifth H, history. Patterns of prehistoric and contemporary mitochondrial DNA variation from Chinook salmon were analyzed to characterize and compare population genetic diversity prior to recent alterations and, thus, elucidate a deeper history for this species. A total of 346 ancient and 366 contemporary samples were processed during this study. Species was determined for 130 of the ancient samples and control region haplotypes of 84 of these were sequenced. Diversity estimates from these 84 ancient Chinook salmon were compared to 379 contemporary samples. Our analysis provides the first direct measure of reduced genetic diversity for Chinook salmon from the ancient to the contemporary period, as measured both in direct loss of mitochondrial haplotypes and reductions in haplotype and nucleotide diversity. However, these losses do not appear equal across the basin, with higher losses of diversity in the mid-Columbia than in the Snake subbasin. The results are unexpected, as the two groups were predicted to share a common history as parts of the larger Columbia River Basin, and instead indicate that Chinook salmon in these subbasins may have divergent demographic histories.Ye

The multinational corporation as a multilingual community: Language and organization in a global context

This paper develops a framework for analyzing the multinational corporation (MNC) as a multilingual community in which parent functional language and subunit functional languages are concurrently used and recursively linked through an intra-corporate communication network. The unit, breadth and intensity of an MNC's language system are designed to apply global strategies within the context of evolving environmental and organizational realities. To the extent that language design is the product of deliberate choice, we suggest that headquarters functional language is determined by the MNC's international strategy, organizational structure, and transnationality, while subunit functional language is designed in accordance with organizational form, strategic role, and expatriate deployment. Aligning language systems with organizational strategy and dynamics improves MNC communication, coordination, and knowledge-sharing. Journal of International Business Studies (2006) 37, 321–339. doi:10.1057/palgrave.jibs.8400197