Boreal Peatland Ecosystems by R. Kelman Wieder, Dale H. Vitt, Brian W. Benscoter (auth.),

By R. Kelman Wieder, Dale H. Vitt, Brian W. Benscoter (auth.), Prof. Dr. R. Kelman Wieder, Prof. Dr. Dale H. Vitt (eds.)

This quantity adopts an ecosystems method of realizing the world's boreal peatlands. It makes a speciality of biogeochemical styles and tactics, construction, decomposition, and peat accumulation, and offers additional info on animal and fungal variety.

A habitual subject matter is the legacy of boreal peatlands as outstanding accumulators of carbon as peat over millennia. This carbon legacy is lower than hazard from a large variety of disturbances, together with wildfire, ongoing weather switch, the altering chemistry of atmospheric deposition, and carrying on with source exploitation. the amount is of curiosity to peatland researchers and source managers, in addition to to graduate scholars in atmosphere science.

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2001). Peat fires can play a significant role in permafrost dynamics (Couillard and Payette 1985; Zoltai 1993), by removing the surface insolation, increasing ground temperatures, and deepening the active layer (Brown 1983). The slowly progressing thawing of permafrost with 36 P. Kuhry and J. Turunen depth means that there can be a significant time-lag in the response of permafrost peatlands to climatic warming (Halsey et al. 1995). There is no simple method to determine the historical timing of permafrost aggradation in peatlands.

2, while the apparent floristic indicators for these criteria are provided in Fig. 3. This approach attempts to tie individual floristic indicators to appropriate criteria for each functional wetland/peatland grade. 1 The Wetland Grade In the boreal zone, wetlands form when soils are saturated throughout the year or are seasonally wet over much or all of the growing season. Waters that influence the wetland have been in contact with nonwetland soils and thus are enriched with a variety of minerals and nutrients.

From an ecosystem point of view, fens are minerotrophic, while bogs are ombrotrophic. In addition to the fundamental role played by hydrology (Chap. 13), both bogs and fens are also strongly influenced by local climate, regional substrate and geomorphology, prevalent regional vegetation and flora, and water chemistry, and as a result occur on the landscape in a number of different types. These individual peatland types often occur together and form large peatland complexes containing a wide variety of peatland types (Vitt et al.

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