Shellfish exploitation in Stone Age Arctic Norway: procurement patterns and household activities

Archaeological evidence for coastal shellfish exploitation in Arctic Norway mostly dates from 5300 to 1500 BC, encompassing the terminal Mesolithic, the Late Stone Age, and the beginning of the Early Metal Period. Shell middens are generally associated with semi-subterranean houses, but may also occur as free-standing deposits. The primary shellfish taxa exploited were Littorina littorea, Arctica islandica and Mytilus edulis. Most of the species utilized were available in the littoral zone and were easily procured in the course of daily household activities, but sub-littoral A. islandica would have required greater investment in procurement technology and time, as well as labor cooperation. Shellfish were an occasional dietary supplement and could also serve as fishing bait. Spatial and temporal variation in shellfish assemblages reflects local marine ecology, sea-level changes, household dynamics, and perhaps field processing. Interpretation of the existing data is constrained by inadequate midden sampling and documentation methods.     

Serpentine Hot Springs,Alaska: results of excavations and implications for the age and significance of northern fluted points

The dispersal of Homo sapiens across the New World is one of the greatest chapters in the history of our species; however, major questions about this late Pleistocene diaspora remain unanswered. Two contentious issues are the timing of colonization of the Bering Land Bridge and origin of Clovis, which at 13,000 calendar years ago is the earliest unequivocal complex of archaeological sites in temperate North America, known by its specialized fluted spear points. One hypothesis is that fluting technology emerged in Beringia and from there was carried southbound, with fluted points becoming the diagnostic “calling card” of early Paleoindians spreading across the Western Hemisphere. Fluted points have long been known from Alaska, yet until now they have never been found in a datable geologic context, making their relationship to Clovis a mystery. Here we show that a new archaeological site at Serpentine Hot Springs, Bering Land Bridge National Preserve, Alaska, contains fluted points in a stratified geologic deposit dating to no earlier than 12,400 calendar years ago. Our results suggest that Alaska's fluted-point complex is too young to be ancestral to Clovis, and that it instead represents either a south-to-north dispersal of early Americans or transmission of fluting technology from temperate North America. These results suggest that the peopling of the Americas and development of Paleoindian technology were much more complex than traditional models predict.     

Policy Coherence and Component-Driven Policymaking: Arctic Policy in Canada and the United States

This research extends theorizing about the implications of political environments to the content of policy areas. We consider the case of Arctic policy in Canada and the United States as an example of what we label as component-driven policymaking. We show how the lack of a clear constituency and the lack of a stable policy subsystem for the Arctic create a policy environment for which the politics of particular issues dominate Arctic policymaking. The result is a policy space labeled Arctic policy that lacks policy coherence. We suggest that similar features of component-based policymaking help explain limited policy coherence for a variety of policy areas such as policies for children, families, rural areas, urban areas, and women in the United States.     

Information Processing and Policy Dynamics

In this article, we trace the evolution of punctuated equilibrium theories of the policy process to the development of a full theory of government information processing. Noting that punctuated equilibrium is one realization of a larger theory of government information processing, we outline a research agenda for the study of agenda setting, policy dynamics, and information flows in the policy process. In doing so, we relate the study of government information processing to such important features of American government as inter-institutional dynamics and delegation in the policy process.     

Reserve Selection for Nature Conservation in South Australia: Past,Present and Future

This paper re‐examines the chronology of reserve selection in South Australia in the context of changing social, political and economic attitudes. The effect of these changing attitudes on reserve selection in South Australia is assessed in the light of the principles of a comprehensive, adequate and representative (CAR) National Reserve System. The outcome of reserve selection in South Australia is the establishment of a vast network of reserves in the arid regions and many fragmented and small reserves in the agricultural regions. It is likely that the remnant ecological system in the agricultural regions is not representative of the regional environmental diversity and that land clearance has precluded the establishment of a CAR reserve system in South Australia. The rate of reserve selection for nature conservation has decreased over the past decade as the opportunities for reserve acquisition decrease. It is concluded that large‐scale and strategic revegetation will be required to facilitate a CAR reserve system in South Australia.     

Interfacility Interaction in Models of Hub and Spoke Networks

Providers of transportation services may reduce their average unit costs by bundling flows and channeling them between hubs (also known as concentrators or routers). The resulting facility locations are interdependent because of the flows between them. This paper analyzes mathematical models of hub systems in an effort to enhance understanding of the optimal location of interactive facilities. The paper examines the behavior of solutions to several alternative models that require the location of a hub at either of two similar locations. A model employing a concave cost function favors the assembly of flows, penalizes fractional facility locations, and produces local minima that have integer facilities.