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  • 1
    Online Resource
    Online Resource
    Oxford :Oxford University Press, Incorporated,
    Keywords: Plants, Fossil. ; Plants -- Evolution. ; Paleobotany. ; Paleoecology. ; Paleoclimatology. ; Historical geology. ; Electronic books.
    Description / Table of Contents: The Emerald Planet is the tale of our world's past - and future - as revealed by plants. Over the immensity of geological time, plants have been powerful agents of change, shaping the climate, the planet, and affecting the evolutionary path of all life. Here, David Beerling tells how.
    Type of Medium: Online Resource
    Pages: 1 online resource (305 pages)
    Edition: 1st ed.
    ISBN: 9780191513077
    Series Statement: Oxford Landmark Science Series
    DDC: 581.38
    Language: English
    Note: Intro -- Contents -- Preface -- Acknowledgements -- Illustrations and plates -- Chapter 1 Introduction -- Chapter 2 Leaves, genes, and greenhouse gases -- Chapter 3 Oxygen and the lost world of giants -- Chapter 4 An ancient ozone catastrophe? -- Chapter 5 Global warming ushers in the dinosaur era -- Chapter 6 The flourishing forests of Antarctica -- Chapter 7 Paradise lost -- Chapter 8 Nature's green revolution -- Chapter 9 Through a glass darkly -- Notes -- Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- J -- K -- L -- M -- N -- O -- P -- R -- S -- T -- U -- V -- W -- Y -- Z.
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  • 2
    Online Resource
    Online Resource
    Cambridge :Cambridge University Press,
    Keywords: Carbon cycle (Biogeochemistry)--Mathematical models. ; Electronic books.
    Description / Table of Contents: Using knowledge of present day vegetation processes and models of global climate, the authors simulate and analyse changes in the earth's vegetation and in the capacity of the Earth's carbon cycle over the past 400 million years. Possible conditions in future centuries are also investigated, providing valuable predictions.
    Type of Medium: Online Resource
    Pages: 1 online resource (417 pages)
    Edition: 1st ed.
    ISBN: 9780511154751
    DDC: 577.144
    Language: English
    Note: Cover -- Half-title -- Title -- Copyright -- Contents -- Preface -- Acknowledgements -- 1 Introduction -- Overview -- The geological timescale -- Ice age Earth -- Greenhouse Earth -- Catastrophic climatic change: the end-Cretaceous mass extinction -- Conclusions -- 2 Investigating the past from the present -- Introduction -- Rubisco -- Rubisco characteristics -- Photorespiration -- Rubisco evolution -- Stomata -- Stable isotopes of carbon -- Conclusions -- 3 Climate and terrestrial vegetation -- Introduction -- The climatic limits of vegetation -- 500 million years of changing global climate -- 500 million years of terrestrial photosynthesis -- Testing the predictions of the photosynthetic models -- Conclusions -- 4 Climate and terrestrial vegetation of the present -- Introduction -- General Circulation Model description -- GCM initialisation and operation -- GCM simulations of palaeoclimates -- GCM reliability and accuracy -- The basic operational flow of the vegetation model -- Module descriptions -- Leaf responses -- Canopy responses -- Soil interactions -- Defining vegetation structure -- Defining functional types -- Model runs of LAI and NPP for the present day -- Global patterns of LAI for the year 1988 -- Global patterns of NPP for the year 1988 -- Predicting the present-day distribution of dominant functional types -- Conclusions -- 5 The late Carboniferous -- Introduction -- Effects of the late Carboniferous atmosphere on photorespiration -- Effects of the late Carboniferous atmosphere on leaf gas exchange -- Photosynthesis and plant growth in the late Carboniferous -- The late Carboniferous global climate -- Global terrestrial productivity in the late Carboniferous -- Comparison of model results with the geological record -- The impact of O2 on global terrestrial productivity and C storage. , Decomposition rates and C storage in terrestrial ecosystems -- C3 and C4 plant distribution in the Carboniferous -- Fire and late Carboniferous terrestrial ecosystems -- Conclusions -- 6 The Jurassic -- Introduction -- Atmospheric CO2 and climatic change across the Triassic-Jurassic boundary -- Consequences for plant adaptation and survival -- Plant acclimation to high CO2 concentration -- The late Jurassic global climate -- Global patterns of photosynthesis in the late Jurassic -- Comparison of modelled vegetation activity with palaeodata -- Global terrestrial productivity in the late Jurassic -- CO2 impacts on vegetation function -- Distribution of plant functional types in the late Jurassic -- Comparison with the Jurassic geological record -- Conclusions -- 7 The Cretaceous -- Introduction -- The global mid-and late Cretaceous environment -- Post-K/T boundary impact environments -- Short-term post-impact environment… -- Long-term post-impact environment… -- Global vegetation productivity and structure in the Cretaceous -- Global carbon storage by terrestrial ecosystems in the Cretaceous -- Loss of carbon by global wildfire at the K/T boundary -- Post-K/T boundary changes in ecosystem properties and the geological record -- Stable carbon isotope constraints on modelled Cretaceous vegetation activity -- Vegetation diversity in the Cretaceous -- Global-scale distribution of plant functional types -- Changes in plant family diversity through the Cretaceous -- Conclusions -- 8 The Eocene -- Introduction -- Global climates of the Eocene and the future -- Comparison of Eocene GCM climate with geological data -- Structure and productivity of terrestrial vegetation in the Eocene -- Feedbacks of Eocene vegetation on climate -- Terrestrial productivity of early Tertiary fossil forests -- Global vegetation distribution in the Eocene and in the future. , Carbon storage by terrestrial ecosystems in the Eocene and the future -- Conclusions -- 9 The Quaternary -- Introduction -- Gas exchange responses of C3 plants to a glacial-interglacial cycle of environmental change -- Global climate change since the LGM -- Changes in global primary productivity and vegetation structure since the LGM -- Distribution of plant functional types since the LGM -- The changing distribution of C4 plants since the LGM -- Changes in terrestrial carbon storage since the LGM -- Global C discrimination by the terrestrial biosphere in the late Quaternary: implications for land carbon storage -- Vegetation and the oxygen isotope composition of atmospheric O2 -- Conclusions -- 10 Climate and terrestrial vegetation in the future -- Introduction -- The climatic scenarios -- Global totals of terrestrial responses -- Net primary productivity -- Net ecosystem production -- Runoff -- Carbon sequestration -- Changes in the distributions of dominant functional types -- Conclusions -- 11 The end view -- General issues -- The carbon cycle -- Plant species -- Contemporary and future timescales -- Conclusions -- References -- Index.
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  • 3
    Online Resource
    Online Resource
    Oxford :Oxford University Press, Incorporated,
    Keywords: Plants-Evolution. ; Electronic books.
    Description / Table of Contents: Plants are absolutely fundamental to the functioning of life on earth. But how did the earliest plants first emerge from water and conquer the continents? Using the latest research, David Beerling tells their evolutionary story. And, as we face catastrophic loss of biodiversity, he highlights the profound effect they have on ecosystems and climate.
    Type of Medium: Online Resource
    Pages: 1 online resource (280 pages)
    Edition: 1st ed.
    ISBN: 9780192519214
    DDC: 581.38
    Language: English
    Note: COVER -- DEDICATION -- MAKING EDEN -- COPYRIGHT -- PREFACE -- ACKNOWLEDGEMENTS -- CONTENTS -- PLATES -- 1. ALL FLESH IS GRASS -- 2. FIFTY SHADES OF GREEN -- 3. GENOMES DECODED -- 4. ANCIENT GENES, NEW PLANTS -- 5. GAS VALVES -- 6. ANCESTRAL ALLIANCES -- 7. SCULPTING CLIMATE -- 8. EDEN UNDER SIEGE -- SIMPLIFIED GEOLOGIC TIMESCALE FROM THE CAMBRIAN -- ENDNOTES -- 1 . All flesh is grass -- 2 . Fifty shades of green -- 3 . Genomes decoded -- 4 . Ancient genes, new plants -- 5 . Gas valves -- 6 . Ancestral alliances -- 7 . Sculpting climate -- 8 . Eden under siege -- FIGURE CREDITS -- PLATE CREDITS -- PUBLISHER'S ACKNOWLEDGEMENTS -- INDEX.
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  • 4
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Earth and Planetary Sciences 31 (2003), S. 105-134 
    ISSN: 0084-6597
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Geosciences , Physics
    Notes: Abstract Theoretical calculations, based on both the chemical and isotopic composition of sedimentary rocks, indicate that atmospheric O2 has varied appreciably over Phanerozoic time, with a notable excursion during the Permo-Carboniferous reaching levels as high as 35% O2. This agrees with measurements of the carbon isotopic composition of fossil plants together with experiments and calculations on the effect of O2 on photosynthetic carbon isotope fractionation. The principal cause of the excursion was the rise of large vascular land plants and the consequent increased global burial of organic matter. Higher levels of O2 are consistent with the presence of Permo-Carboniferous giant insects, and preliminary experiments indicate that insect body size can increase with elevated O2. Higher O2 also may have caused more extensive, possibly catastrophic, wildfires. To check this, realistic burning experiments are needed to examine the effects of elevated O2 on fire behavior.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Global change biology 11 (2005), S. 0 
    ISSN: 1365-2486
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: Isoprene (C5H8) emissions by terrestrial vegetation vary with temperature and light intensity, and play an important role in biosphere–chemistry–climate interactions. Such interactions were probably substantially modified by Pleistocene climate and CO2 cycles. Central to understanding the nature of these modifications is assessment and analysis of how emissions changed under glacial environmental conditions. Currently, even the net direction of change is difficult to predict because a CO2-depleted atmosphere may have stimulated emissions compensating for the negative impacts of a cooler climate. Here, we address this issue and attempt to determine the direction of change from an experimental standpoint by investigating the interaction between isoprene emissions and plant growth of two known isoprene-emitting herbaceous species (Mucuna pruriens and Arundo donax) grown at glacial (180 ppm) to present (366 ppm) CO2 levels. We found a significant enhancement of isoprene emissions per unit leaf area in M. pruriens under subambient CO2 concentrations relative to ambient controls but not for A. donax. In contrast, canopy emissions remained unaltered for both plant species because enhanced leaf emissions were offset by reductions in biomass and leaf area. Separate growth experiments with M. pruriens revealed that lowering day/night temperatures by 5°C decreased canopy isoprene emissions irrespective of the CO2 level. Incorporation of these results into a simple canopy emissions model highlights their potential to attenuate reductions in the total isoprene flux from forests under glacial conditions predicted by standard models.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 364 (1993), S. 24-24 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ARE there fundamental laws governing the behaviour of ecosystems? If so, how long will it be before we can expect to discover them? Unfortunately, unlike physicists and chemists, ecologists have few, if any, general laws, and none that can be applied to the problem of predicting the responses of ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 415 (2002), S. 386-387 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The end of the Triassic period was marked by one of the largest and most enigmatic mass-extinction events in Earth's history and, with few reliable marine geochemical records, terrestrial sediments offer an important means of deciphering environmental changes at this time. Tanner et al. ...
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillian Magazines Ltd.
    Nature 432 (2004), S. 495-499 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] An abrupt climate warming of 5 to 10 °C during the Palaeocene/Eocene boundary thermal maximum (PETM) 55 Myr ago is linked to the catastrophic release of ∼1,050–2,100 Gt of carbon from sea-floor methane hydrate reservoirs. Although atmospheric methane, and the ...
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillian Magazines Ltd.
    Nature 424 (2003), S. 60-62 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fossils demonstrate that deciduous forests covered the polar regions for much of the past 250 million years when the climate was warm and atmospheric CO2 high. But the evolutionary significance of their deciduous character has remained a matter of conjecture for almost a century. The ...
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1435-0629
    Keywords: Key words: climate change; boreal forest; greenhouse; catchment; vegetation; soil; water; temperature; carbon dioxide.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: ABSTRACT To evaluate the effects of climate change on boreal forest ecosystems, both atmospheric CO2 (to 560 ppmv) and air temperature (by 3°–5°C above ambient) were increased at a forested headwater catchment in southern Norway. The entire catchment (860 m2) is enclosed within a transparent greenhouse, and the upper 20% of the catchment area is partitioned such that it receives no climate treatment and serves as an untreated control. Both the control and treatment areas inside the greenhouse receive deacidified rain. Within 3 years, soil nitrogen (N) mineralization has increased and the growing season has been prolonged relative to the control area. This has helped to sustain an increase in plant growth relative to the control and has also promoted increased N export in stream water. Photosynthetic capacity and carbon–nitrogen ratio of new leaves of most plant species did not change. While the ecosystem now loses N, the long-term fate of soil N is a key uncertainty in predicting the future response of boreal ecosystems to climate change.
    Type of Medium: Electronic Resource
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