Author: Maud Doria HavilandPublisher:
ISBN:
Category : Science
Languages : en
Pages : 262
Book Description
Forest, Steppe, & Tundra
Author: Maud Doria HavilandPublisher:
ISBN:
Category : Science
Languages : en
Pages : 262
Book Description
forest, steppe & tundra studies in animal evironment
Author: Maud D. HavilandPublisher: CUP Archive
ISBN:
Category :
Languages : en
Pages : 258
Book Description
Forest, Steppe & Tundra
Author: Maud Doris HavilandForest, Steppe and Tundra. Studies in Animal Environment
Author: afterwards BRINDLEY HAVILAND (Maud D.)Publisher:
ISBN:
Category :
Languages : en
Pages : 218
Book Description
Tundra
Author: Peter D. MoorePublisher: Infobase Publishing
ISBN: 1438118724
Category : Environmental sciences
Languages : en
Pages : 281
Book Description
Describes the tundra biome, including climate, geology, geography and biodiversity.
Vvedenie, Tundra, Lesnaja Zona
Author: Lev Semenovič BergThe Steppes and Tundras of prehistoric Europe
Author: James GeikiePublisher: Primento Digital sprl
ISBN: 2386260194
Category : Science
Languages : en
Pages : 66
Book Description
We are all familiar with the general conclusion arrived at by geologists that our earth has experienced many climatic changes. There have been times when genial conditions ranged up to the highest latitudes, and times also when the cold of the arctic regions descended to what is now our temperate zone. The cause or causes of those remarkable vicissitudes still baffle research. Many explanations have been advanced, some highly improbable, others perhaps more likely, while of yet others it may be said that possibly they contain a certain amount of truth. But no one theory or hypothesis has succeeded in gaining general assent, and we shall not therefore at present concern ourselves with any. In place of reviewing hypotheses and speculations, I shall limit myself to a survey of certain facts connected with the later geological history of our continent, the meaning of which is more or less apparent. The evidence referred to leads to the conclusion that Middle Europe has within the human period experienced conditions such, as now obtain in the tundras and barren grounds of circumpolar regions. When these conditions passed away, the central and west-central areas of our continent became steppe lands, comparable as regards climate to the subarctic steppes of southeast Russia and southwest Siberia. As geologists reason from the present to the past, it will be well to take first a brief glance at those regions of the globe where at present tundra and steppe conditions respectively prevail. When we have realized the salient characters of those regions, and the nature of their floras and faunas, we shall be in a better position to understand the bearing of the geological evidence. ABOUT THE AUTHOR James Geikie (1839–1915) was a Scottish geologist and younger brother of Sir Archibald Geikie. He also made significant contributions to the field of geology.
Tundras
Author: Beltran GutierrezPublisher:
ISBN:
Category : Nature
Languages : en
Pages : 230
Book Description
Tundra ecosystems are seriously affected by global climate change. Understanding tundra history and post-glacial development may enhance the ability of biologists to anticipate biotic responses to current environmental changes. In this book, the authors analyse changes which have occurred in a vegetative cover and aboveground fauna of vertebrates at Yamal peninsula, one of the greatest plains on the globe. The authors also evaluate pedogenetic processes, soil nutrient status and plant distribution along an elevation gradient in the alpine tundra in the western Italian Alps. In addition, treeline ecotone is a belt of transition from forest vegetation to a non-forest one, which allow the monitoring of climate change. In this book, carbon deposition on the forests of two treeline ecotones is studied. Some of the current emerging theories, models and recent empirical evidence for the dynamics of these reciprocal interactions between climate and terrestrial microbial communities are also reviewed, with particular attention to biogeochemical and ecological perspectives.
General Technical Report RM.
Author: Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 508
Book Description
Terrestrial Biospheric Carbon Fluxes Quantification of Sinks and Sources of CO2
Author: Joe WisniewskiPublisher: Springer Science & Business Media
ISBN: 9401119821
Category : Science
Languages : en
Pages : 677
Book Description
Towards the Balance and Management of the Carbon Budget of the Biosphere The current state of misunderstanding of the global C cycle and our failure to resolve an issue that has been debated for 100 years (Jones and Henderson-Sellers, 1990) speaks loudly about the limitations of modem science when faced with the complexity of the biosphere. Efforts to understand and balance the global C budget have gone through several phases. First was a holistic view of the C budget as part of efforts to understand the geochemistry of the Earth (e. g. , Clarke, 1908). Next, came a period of data collection and sythesis which focused on the diversity of sectors of the biosphere. This phase culminated in the early 1970's with the realization that humans were greatly impacting the global C cycle as measured at the Mauna Loa Observatory (Keeling et al. , 1973). New syntheses of the global C budget emerged at this time (Woodwell and Pacan, 1973; Bolin et al. , 1979). The next phase was one of controversy and intense focus on particular sectors of the biosphere. The controversy rested on discrepancies about the role of the terrestrial biota in the global C cycle and the failure to account for sufficient C sinks to absorb all the C emitted by land-use change in the tropics (Woodwell et al. , 1978, 1983; Houghton et al. , 1983).