By Jon B. Orbaek, Jon B. Orbaek;Roland Kallenborn;Ingunn Tombre;Else N. Hegseth;Stig Falk-Petersen;Alf H. Hoel
The ecu Arctic and Alpine areas are experiencing huge environmental adjustments. elevated temperatures and precipitation, relief in sea ice and glacier ice, the elevated point of UV-radiation and the long-range transported contaminants are difficult new pressure components for either terrestrial and aquatic organisms. the big annual version within the actual parameters of those severe environments is usually a key think about structuring the biodiversity and biotic productiveness, and the impact of the strain elements should be severe for the inhabitants constructions and the interplay among species. those adjustments can also have socio-economic results if the adjustments impact the bioproduction, which shape the foundation for the marine and terrestrial nutrients chains. This e-book provides an built-in evaluation of the modern environmental alterations in Arctic, Alpine areas; weather swap and atmosphere reaction, lengthy diversity delivery of toxins and Ecotoxicology, UV-radiation and organic results, Socio-economic results of Environmental Change.
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Extra resources for Arctic Alpine Ecosystems and People in a Changing Environment (2007)(en)(434s)
1998). They point out that although the UV radiation is more intense in temperate zones, the polar algae are more sensitive to UV as compared to their temperate relatives. Potential negative effects on primary plant productivity may occur especially in spring, low temperatures and clear water conditions allowing harmful UV wavelengths to penetrate several meters into the marine water column. Hanelt et al. (Chap. 15) also point out that the summer discharge of turbid fresh water into the coastal waters overlays the more dense sea water, causing a stratification in the optical features, salinity and temperature of the water body that strongly attenuate solar radiation in the first meter of the water column.
It draws on, and summarizes, recent research on climate change impacts on indigenous livelihoods as well as some of the key work undertaken for the human dimensions chapters of the Arctic Climate Impact Assessment (ACIA 2005). 2 Indigenous Peoples and Traditional Livelihoods The indigenous peoples of the Arctic include the Inupiat, Yup’iit, Alutiit, Aleuts and Athapaskans of Alaska; the Inuit, Inuvialuit, Athapaskans and Dene of northern Canada; the Kalaallit and Inughuit of Greenland; the Saami of Fennoscandia and Russia’s Kola peninsula; and the Chukchi, Even, Evenk, Nenets, Nivkhi and Yukaghir of the Russian Far North and Siberia.
Most Arctic marine species depend upon the presence of sea ice and many indigenous coastal communities depend on harvesting marine species (marine mammals and fish). The ice-edge is unique among the world's ecosystems in that it moves thousands of kilometres each year, north in spring and south in autumn. Walrus, numerous species of seals and cetaceans such as beluga and narwhals all follow the ice-edge as it moves, taking advantage of the ready access to food and (for the walrus and seals) the availability of ice to haul-out on for sunning, mating and raising pups in late winter and spring (an important time for Inuit hunting communities).
Arctic Alpine Ecosystems and People in a Changing Environment (2007)(en)(434s) by Jon B. Orbaek, Jon B. Orbaek;Roland Kallenborn;Ingunn Tombre;Else N. Hegseth;Stig Falk-Petersen;Alf H. Hoel