By John E. Hobbie, George W. Kling
During this version of the longer term Ecological examine community sequence, editors John Hobbie and George Kling and fifty eight co-authors synthesize the findings from the NSF-funded Arctic LTER venture dependent at Toolik Lake, Alaska, a domain that has been energetic because the mid-1970s. The e-book offers examine at the center problems with climate-change technology within the treeless arctic sector of Alaska. As a complete, it examines either terrestrial and freshwater-aquatic ecosystems, and their 3 usual habitats: tundra, streams, and lakes.
The booklet offers a historical past of the Toolik Lake LTER web site, and discusses its current situation and destiny outlook. It beneficial properties contributions from best scientists from many fields, making a multidisciplinary survey of the Alaskan arctic surroundings. bankruptcy themes comprise glacial historical past, climatology, land-water interactions, mercury present in the Alaskan arctic, and the reaction of those habitats to environmental swap. the ultimate bankruptcy predicts the implications that arctic Alaska faces because of worldwide warming and weather swap, and discusses the long run ecology of the LTER web site within the sector.
Alaska's altering Arctic is the definitive medical survey of the earlier, current, and way forward for the ecology of the Alaskan arctic.
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Extra resources for Alaska's Changing Arctic: Ecological Consequences for Tundra, Streams, and Lakes
With these measurements, we can describe the environmental variables at the Arctic LTER site; this baseline is beginning to allow scientists to distinguish changes from the noise of year-to-year variability. Some long-term changes have already been noted such as a change in the alkalinity of streams and small changes in the dominant vegetation types (Hobbie et al. 1999). The year-to-year variation also gives information on the controls of plant flowering and grayling growth. For example, adult grayling grow best in summers with cold temperatures and high water flow, while young grayling grow best in low water flows of warm and dry summers (Deegan et al.
The incoming solar radiation per unit area is strongly affected by the low solar angle (maximum of ~45º at summer solstice). 1 Daily averaged incoming solar radiation at the Toolik LTER from January 1, 2009, to December 31, 2010. 35 kW m–2. 2). 5ºC. During this period, surface air temperatures at 5 m reached their minimum typically between January and March and their maximum in July, with the exception of 2005, when the maximum was in June. The relationship of SAT to the ground surface temperature (GST) at Toolik is heavily influenced by snow.
Ecological Studies 120. Berlin: Springer-Verlag. Walker, D. , M. K. Raynolds, F. A. Daniëls, E. Einarsson, A. Elvebakk, W. A. Gould, A. E. Katenin, S. S. Kholod, C. J. Markon, E. S. Melnikov, N. G. Moskalenko, S. S. Talbot, B. A. Yurtsev, and CAVM Team. 2005. The circumpolar arctic vegetation map. Journal of Vegetation Science 16:267–282. , E. B. Rastetter, G. R. Shaver, J. E. Hobbie, E. Carpino, and B. L. Kwiatkowski. 2001. Primary production of an arctic watershed: An uncertainty analysis. Ecological Applications 11:1800–1816.
Alaska's Changing Arctic: Ecological Consequences for Tundra, Streams, and Lakes by John E. Hobbie, George W. Kling