ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    The landscape factor in the formation of pollen records in lake sediments (1997)
    Springer
    Journal of paleolimnology 18 (1997), S. 33-44 
    Details
    ISSN: 1573-0417
    Keywords: landscape development ; paleoecology ; pollen influx ; lake sediments ; Estonia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Comprehensive paleobotanical and geochemical methods have been used to study the relationship between the spatial scale of landscape development and values of pollen influx to take the bog sediments. The spatial-temporal history of the four lakes and a bog was established in NE Estonia and pollen analyses of thier sediment were made. It was found that the influx of total arboreal pollen directly corresponds with the sizes of the sites studied, and varies with thier expansion or reduction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007903103642
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The Sensitivity and Adaptation of Ecosystems to the Disturbances: A Case Study in Northeastern Estonia (1997)
    Springer
    Mitigation and adaptation strategies for global change 2 (1997), S. 1-17 
    Details
    ISSN: 1573-1596
    Keywords: adaptation and self-regulation of ecosystems ; charcoal ; diatoms ; Estonia ; natural disturbances ; palaeoecology ; pollen analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: Abstract The study focused on the problem of the response and adaptation of an ecosystem to natural fire in case of greenhouse warming. The palaeoecological approach was used and reconstructions were made for time ca 6000 years ago, when the human impact in the studied area was absent or very weak and the summer temperatures were about 2.4 degrees higher than at the present time. The palaeoreconstructions were compiled using the charcoal, pollen and diatoms data from the sediments of a northeast Estonian lake. The results show that forest fires influenced the biota of the lake mainly through evapotranspiration and the accompanying erosional changes. The impacts of the fire directly to the lake ecosystem were short-term and the primary diatom association was restored after 10–15 years. The pollen influx was influenced by the fires mainly through the changes in the openness of the landscape and the composition of the pollen spectra was restored over a period of 50–60 years. The data demonstrate the high ability of the studied ecosystem to adapt to the impact of natural fires in the climatic environment comparable with that predicted for the future.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/B:MITI.0000004662.80181.80
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The sensitivity and adaptation of ecosystems to the disturbances: A case study in northeastern estonia (1997)
    Springer
    Mitigation and adaptation strategies for global change 2 (1997), S. 1-17 
    Details
    ISSN: 1573-1596
    Keywords: adaptation and self-regulation of ecosystems ; charcoal ; diatoms ; Estonia ; natural disturbances ; palaeoecology ; pollen analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: Abstract The study focused on the problem of the response and adaptation of an ecosystem to natural fire in case of greenhouse warming. The palaeoecological approach was used and reconstructions were made for timeca 6000 years ago, when the human impact in the studied area was absent or very weak and the summer temperatures were about 2.4 degrees higher than at the present time. The palaeoreconstructions were compliled using the charcoal, pollen and diatoms data from the sediments of a northeast Estonian lake. The results show that forest fires influenced the biota of the lake mainly through evapotranspiration and the accompanying erosional changes. The impacts of the fire directly to the lake ecosystem were short-term and the primary diatom association was restored after 10–15 years. The pollen influx was influenced by the fires mainly through the changes in the openness of the landscape and the composition of the pollen spectra was restored over a period of 50–60 years. The data demonstrate the high ability of the studied ecosystem to adapt to the impact of natural fires in the climatic environment comparable with that predicted for the future.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02437054
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The Flame Research Project: Introduction and Methods (1998)
    Springer
    Water, air & soil pollution 106 (1998), S. 205-218 
    Details
    ISSN: 1573-2932
    Keywords: Fly-ash particles ; trace metals ; lake sediments ; mosses ; atmospheric deposition ; Europe
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The FLAME (FLy-Ash and Metals in Europe: Implications for human and environmental health) research project funded by the EU COPERNICUS programme ran from 1994 to 1996. The main aims of the programme were to further develop an automated chemical characterisation to discriminate between fly-ash particles from the major fossil-fuels used throughout Europe (coal, oil, peat, brown coal and oil shale) and apply this to particles extracted from lake sediments taken from the four participating countries (Estonia, Czech Republic, Ireland and U.K.) in order to determine spatial distributions of deposited particulates from large combustion sources. In combination with trace metal analyses from lake surface sediments and catchment mosses, the fly-ash particle data were able to identify areas of elevated pollutant deposition and suggest potential sources for them. Given the transboundary nature of the pollutants, the techniques and results of FLAME are of relevance throughout Europe. Other papers in this volume describe results and interpretation. This paper describes the background and aims of the FLAME project, outlines the methods employed for sampling sediments and mosses and the analytical techniques for particle enumeration and trace metal analysis for sediments and mosses. Finally brief details of the particle characterisation are given showing how a hierarchical discriminant function was developed, based on energy dispersive spectroscopy (EDS) derived particle chemistry which correctly allocated particles from the five fuel-types with 80% accuracy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005008427122
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    The FLAME Project: General Discussion and Conclusions (1998)
    Springer
    Water, air & soil pollution 106 (1998), S. 329-351 
    Details
    ISSN: 1573-2932
    Keywords: Fly-ash ; trace metals ; lake sediments ; mosses ; United Kingdom ; Ireland ; Estonia ; Czech Republic ; Europe
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Detailed discussion of the FLAME data at individual country level is included in other papers in this volume but some aspects of the analyses and data interpretation are best discussed on a broader level and that is the aim of this paper. The spatial distribution of fly-ash particles in the participating countries shows good agreement with expected sources and this implies that the majority of particulates travel less than 100 km from their source although lower concentrations of particles were detected at all sample sites. Areas of elevated concentration mostly coincide with population centres and imply possible impacts on human health by fine particulates (e.g. PM10) from fossil-fuel sources in these areas. Problems with the particle characterisation, developed within the FLAME project, include difficulties in allocation due to the overlap between coal-series fuels and the presence of a 'mineral coal' background at lake sites thought to be due to persistent sediment minerals surviving the chemical pre-treatment and becoming allocated to coal. This leads to implications for the inclusion of further fuels into the classification and the application of the technique to the same fuels beyond Europe. The combination of lake sediment SCP data and sediment and moss metals data can also provide an indication of the impact from anthropogenic contamination at a site and probable source types. Comparison with previous moss analyses from 1990 show that metal concentrations in central Europe may have decreased but levels in the UK have shown little change. Finally, comparisons of FLAME data with the EMEP model for pollutant budgets across Europe generally show good agreement for pathways, although further work is needed in receptor countries for additional confirmation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005093313010
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    facet.materialart.
    Unknown
    Impact of forest disturbance on the pollen influx in lake sediments during the last century (2000)
    Elsevier
    Details
    Publication Date: 2000-08-01
    Print ISSN: 0034-6667
    Electronic ISSN: 1879-0615
    Topics: Geosciences
    Published by Elsevier
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 7
    facet.materialart.
    Unknown
    Application of 14C Data for the Estimation of Sphagnum Peat Increment in Estonian Ombrotrophic Mires (1997)
    Cambridge University Press
    Details
    Publication Date: 1997-01-01
    Description: We calculated apparent increment values based on the radiocarbon dates of 21 Estonian ombrotrophic mires (raised bogs). For short periods, the values vary significantly, but the integrated increment for the total complex of ombrotrophic peat shows a strong increasing tendency with decreasing peat age. This is probably due to the decay of accumulated organic matter. Our hypotheses concern the mechanisms of decay and methods for increasing the reliability of the interpolation and extrapolation of 14C data.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Cambridge University Press
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 8
    facet.materialart.
    Unknown
    Tallinn Radiocarbon Dates VI (1980)
    Cambridge University Press
    Details
    Publication Date: 1980-01-01
    Description: The following list includes samples dated at the Institute of Geology, Academy of Sciences of the Estonian SSR in 1978. The measurement of natural 14C activity is performed by 1-channel and 2-channel scintillation devices (Punning & Rajamäe, 1977). Ages are calculated using the half-life of 5568 ± 30 years and 0.95 NBS oxalic acid modern standard with ad 1950 as reference year.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Cambridge University Press
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    Tallinn Radiocarbon Dates V (1978)
    Cambridge University Press
    Details
    Publication Date: 1978-01-01
    Description: The following list comprises age measurements carried out during 1976 and 1977. The activity of 14C was computed by one- and two-channel scintillation devices (Punning et al, 1976; 1977). Ages are calculated using a half-life of 5568 ± 30 years for 14G with NBC oxalic acid as a reference standard. All dates are reported in years before 1950. 12C/13C measurements were not performed and results are not corrected for 13C fractionation.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Cambridge University Press
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Tallinn Radiocarbon Dates IV (1977)
    Cambridge University Press
    Details
    Publication Date: 1977-01-01
    Description: The following list includes samples dated in 1975. The measurement of 14C activity was performed with 1-channel and 2-channel scintillation devices. Special attention was paid to the decrease of the background. The effectiveness of the measurement is ca 50% (Punning, Rajamäe, 1975). The “enriched standard” (Alekseejev et al, 1971) has been used as a contemporary reference standard of modern carbon. Age calculations are based on the 14C half-life of 5568 ± 30 yr, with 1950 as the standard year of reference. All samples are calculated to ± 1σ with respect to sample, standard and background after counting times of at least 2800 minutes. 13C/12C measurements and corrections have not been made for these samples.
    Print ISSN: 0033-8222
    Electronic ISSN: 1945-5755
    Topics: Archaeology , Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Published by Cambridge University Press
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...