The Far North:: Plant Biodiversity and Ecology of Yakutia

Couverture
Elena I. Troeva, A. P. Isaev, M.M. Cherosov, N. S. Karpov
Springer Science & Business Media, 28 janv. 2010 - 385 pages

Outside Russia very little is known about the terrestrial ecology, vegetation, biogeographical patterns, and biodiversity of the enormously extensive ecosystems of Yakutia, Siberia. These systems are very special in that they function on top of huge layers of permafrost and are exposed to very severe and extreme weather conditions, the range between winter and summer temperatures being more than 100 degrees C. The soils are generally poor, and human use of the vegetation is usually extensive. Main vegetation zones are taiga and tundra, but Yakutia also supports a special land and vegetation form, caused by permafrost, the alas: more or less extensive grasslands around roundish lakes in taiga. All these vegetation types will be described and their ecology and ecophysiological characteristics will be dealt with. Because of the size of Yakutia, covering several climatic zones, and its extreme position on ecological gradients, Yakutia contains very interesting biogeographical patterns, which also will be described. Our analyses are drawn from many years of research in Yakutia and from a vast body of ecological and other literature in Russian publications and in unpublished local reports. The anthropogenic influence on the ecosystems will be dealt with. This includes the main activities of human interference with nature: forestry, extensive reindeer herding, cattle and horse grazing, etc. Also fire and other prominent ecological factors are dealt with. A very important point is also the very high degree of naturalness that is still extant in Yakutia’s main vegetation zones.

 

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Table des matières

1 Natural Conditions
1
Composition and Ecological Structure
24
Elements of Ecology and Plant Sociology
143
4 Vegetation and Human Activity
261
5 Insect Impact on Vegetation
296
6 Structural and Functional Peculiarities of the Plants of Yakutia
317
7 Nature Conservation Status and Its Prospects
357
Colour Plates
370
Index
389
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