Virus-bacterium interactions were investigated in the pelagic and benthic habitats in a set of lakes along an altitudinal gradient in the subarctic northern Sweden. Viral and bacterial abundances showed a significant variation between the lakes, with the highest benthic microbial abundances recorded in a high-altitude lake [993 m above sea level (a.s.l.)], whereas the highest pelagic microbial ...

BACKGROUND The Arctic and subarctic area are likely to be highly affected by climate change, with possible impacts on human health due to effects on food security and infectious diseases. OBJECTIVES To investigate the evidence for an association between climatic factors and infectious diseases, and to identify the most climate-sensitive diseases and vulnerable populations in the Arctic and su...

The BASS Workshop on " The development of a conceptual model of the Subarctic Pacific basin ecosystems " discussed the possibility of applying ECOPATH/ECOSIM to the modeling of subarctic gyre ecosystems, based on presentations, the extended abstracts of which appear in the report. The workshop participants recognized that the Program has now entered its synthesis phase and the role of modeling ...

The coastal mosquito Aedes togoi occurs more or less continuously from subarctic to subtropic zones along the coasts of the Japanese islands and the East Asian mainland. It occurs also in tropical Southeast Asia and the North American Pacific coast, and the populations there are thought to have been introduced from Japan by ship. To test this hypothesis, the genetic divergence among geographic ...

Existing observations are inadequate to identify and to understand the processes by which oceanic and atmospheric variability affect the marine biota at climate scales. To aid in the identification and study of important processes, we employ a one-dimensional coupled mixed layer / planktonic ecosystem (Nutrient-Phytoplankton-Zooplankton-Detritus) model of the subarctic Pacific Ocean. Increasing...

Topical issue on ‘‘SEEDS II: The Second Subarctic Pacific Iron Experiment for Ecosystem Dynamics Study.’’ The issue is compiled and guest-edited by the North Pacific Marine Science Organization (PICES) and International SOLAS. Available online 17 July 2009

BACKGROUND Black Tickle-Domino is an extremely water-insecure remote Inuit community in the Canadian subarctic that lacks piped-water. Drinking water consumption in the community is less than a third of the Canadian national average. Water insecurity in the community contributes to adverse health, economic, and social effects and requires urgent action. OBJECTIVES To test the ability of domes...

Late Neogene paleoceanographic history in the western North Pacific is discussed on the basis of: (1) Td (diatom temperature) values, (2) species composition, and (3) the structure of diatom assemblages at Sites 579 and 580. These factors provide a record of fluctuations of the past position of the subarctic-subtropic front because these sites lie within the transition zone between the modern d...

Introduction Conclusions References

Global changes are causing decreases in inorganic nitrogen (N) concentrations, increases coloured dissolved organic carbon (DOC) and N to total phosphorus ratios (DIN:TP) northern lakes. The effects of these on phytoplankton zooplankton biomass the N:P recycling ratio remain unresolved. In 33 Swedish headwater lakes across subarctic-to-boreal gradients with different levels deposition (low nort...