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The article presents information on the problems faced by the natives of Alaska associated with the use of fossil-fuel based technologies arising from the scarcity of fossil fuels and the effect of climatic change. It gives a background of the hunting and fishing in Alaska and a legal regime to manage such activities. It suggests the native communities to start planning and implementing measures in order to reduce the use of fossil fuels, lower cost of living and free itself from dependence on outside sources to continue residing in their ancestral lands. It recommends adopting of wildlife regulations, use of energy renewal project and growing food locally within villages.
Categories: Publication; Types: Citation; Tags: A1-Climate Change
There is little doubt in the scientific community that if the current patterns of climate warming continue, there will be dramatic changes in the distribution of vegetation and forest cover throughout the boreal region. Most research has concentrated on predicting how rises in air temperature will (1) cause shifts in vegetation cover and the carbon balance in the terrestrial biome (Smith and Shugart 1993) or (2) change rates of soil respiration (Townsend et al. 1992; Randerson et al. 1996; Thompson et al. 1997). Recently, more sophisticated biogeochemical cycling models have been developed that actually model the processes responsible for carbon storage in vegetation to assess changes in the terrestrial carbon budget...
A previously reported analysis of rehabilitated monthly temperature and precipitation time series for several hundred stations across Canada showed generally spatially coherent patterns of variation between two decades (1976?85 and 1986?95). The present work expands that analysis to finer time scales and a greater number of stations. We demonstrate how the finer temporal resolution, at 5 day or 11 day intervals, increases the separation between clusters of recent variations in seasonal patterns of temperature and precipitation. We also expand the analysis by increasing the number of stations from only rehabilitated monthly data sets to rehabilitated daily sets, then to approximately 1500 daily observation stations....
A previously reported analysis of rehabilitated monthly temperature and precipitation time series for several hundred stations across Canada showed generally spatially coherent patterns of variation between two decades (1976?85 and 1986?95). The present work expands that analysis to finer time scales and a greater number of stations. We demonstrate how the finer temporal resolution, at 5 day or 11 day intervals, increases the separation between clusters of recent variations in seasonal patterns of temperature and precipitation. We also expand the analysis by increasing the number of stations from only rehabilitated monthly data sets to rehabilitated daily sets, then to approximately 1500 daily observation stations....
[Description available at publisher site.]
Categories: Publication; Types: Citation; Tags: A1-Climate Change
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In response to the potential impacts of climate change on ecosystems within the Northern Bioregion, Parks Canada is considering a climate and climate change impacts monitoring program. In this study, feasible climate change indicators for the participating National Parks within the Northern Bioregion of Canada (i.e., Vuntut, Ivvavik, Aulavik, Tuktut Nogait, Nahanni, Ukkusiksalik, Wapusk, Auyuittuq, Sirmilik and Quttinirpaaq National Parks) were compiled and assessed in a process that involved seven steps: compilation of a draft indicator list, grouping of the indicators, collection of data for selected indicators, review of indicator list by Parks Canada, evaluation of indicators, determination of the final indicator...
Ecological “surprises” are defined as unexpected findings about the natural environment. They are critically important in ecology because they are catalysts for questioning and reformulating views of the natural world, help shape assessments of the veracity of a priori predictions about ecological trends and phenomena, and underpin questioning of effectiveness of resource management. Despite the importance of ecological surprises, major gaps in understanding remain about how studies might be done differently or done better to improve the ability to identify them. We outline the kinds of ecological surprises that have arisen from long-term research programs that we lead in markedly different ecosystems around the...
We reviewed existing and planned adaptation activities of federal, tribal, state, and local governments and the private sector in the United States (U.S.) to understand what types of adaptation activities are underway across different sectors and scales throughout the country. Primary sources of review included material officially submitted for consideration in the upcoming 2013 U.S. National Climate Assessment and supplemental peer-reviewed and grey literature. Although substantial adaptation planning is occurring in various sectors, levels of government, and the private sector, few measures have been implemented and even fewer have been evaluated. Most adaptation actions to date appear to be incremental changes,...
Categories: Publication; Types: Citation; Tags: A1-Alaska, A1-Climate Change
Anthropogenic greenhouse gas emissions may be offset by sequestering carbon dioxide (CO2) through the carbonation of magnesium silicate minerals to form magnesium carbonate minerals. The hydromagnesite [Mg5(CO3)4(OH)2·4H2O] playas of Atlin, British Columbia, Canada provide a natural model to examine mineral carbonation on a watershed scale. At near surface conditions, CO2 is biogeochemically sequestered by microorganisms that are involved in weathering of bedrock and precipitation of carbonate minerals. The purpose of this study was to characterize the weathering regime in a groundwater recharge zone and the depositional environments in the playas in the context of a biogeochemical model for CO2 sequestration with...
Categories: Publication; Types: Citation; Tags: A1-Climate Change
ABSTRACT: Wetlands exist in a transition zone between aquatic and terrestrial environments which can be altered by subtle changes in hydrology. Twentieth century climate records show that the United States is generally experiencing a trend towards a wetter, warmer climate; some climate models suggest that this trend will continue and possibly intensify over the next 100 years. Wetlands that are most likely to be affected by these and other potential changes (e.g., sea-level rise) associated with atmospheric carbon enrichment include permafrost wetlands, coastal and estuanne wetlands, peat lands, alpine wetlands, and prairie pothole wetlands. Potential impacts range from changes in community structure to changes...
There is little doubt in the scientific community that if the current patterns of climate warming continue, there will be dramatic changes in the distribution of vegetation and forest cover throughout the boreal region. Most research has concentrated on predicting how rises in air temperature will (1) cause shifts in vegetation cover and the carbon balance in the terrestrial biome (Smith and Shugart 1993) or (2) change rates of soil respiration (Townsend et al. 1992; Randerson et al. 1996; Thompson et al. 1997). Recently, more sophisticated biogeochemical cycling models have been developed that actually model the processes responsible for carbon storage in vegetation to assess changes in the terrestrial carbon budget...
map background search result map search result map Selection of Climate Change Monitoring Indicators for the National Parks of the Northern Bioregion Tree growth history, climate sensitivity, and growth potential of black and white spruce along the middle Kuskokwim River, Alaska Tree growth history, climate sensitivity, and growth potential of black and white spruce along the middle Kuskokwim River, Alaska Selection of Climate Change Monitoring Indicators for the National Parks of the Northern Bioregion