GLORIA

GEOMAR Library Ocean Research Information Access

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
Filter
  • Springer  (21)
  • ICOP  (1)
Document type
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Investigating patterns of pond and lake distributions to enhance the modeling of future Arctic surface inundation (2016)
    ICOP
    In:  EPIC3ICOP, Potsdam, Germany, 2016-06-20-2016-06-24Potsdam, Germany, ICOP
    Details
    Publication Date: 2021-08-16
    Description: Permafrost acts as an impermeable subsurface in Arctic lowland landscapes. This hydrological barrier results in carbon-rich, water-saturated soils as well as many ponds and lakes. The rapidly warming Arctic climate very likely will affect the surface inundation in Arctic lowlands due to changes in precipitation, evapotranspiration, and permafrost degradation. Drying and wetting of the surface may occur in different regions and potentially alter the exchange of energy and carbon between the surface and the atmosphere. With increased permafrost thaw, for example, water may drain to deeper soil layers or drainage maybe enhanced due to newly forming drainage networks. Melting ground ice and subsequent inundation, on the other hand, may enhance formation of new ponds and wet areas. The current distribution of ponds and lakes in the Arctic is the result of complex interactions between climate, ground ice volume, topography, age and sediment characteristics. Because lake formation and growth processes occur at spatial scales orders of magnitude below those of the resolution for global or pan-arctic models land surface models, statistical representations of lake size distributions and other properties to inform such processes in future models are needed that can be related to macroscopic landcape properties. This study proposes basic observationally-constrained relationships to enhance the modeling of future Arctic surface inundation. We mapped ponds and lakes in 21 circum-arctic sites representing different permafrost-soil landscapes, i.e., physiographic regions with similar surface geology, regional climate, and biomes. We used high-resolution optical and radar satellite imagery with spatial resolutions of 4 m or better to create detailed water body maps and derive representative probability density functions (PDF). PDFs of ponds and lakes vary little within the same ecoregion. Significant differences, however, do occur between landscapes. We used regional permafrost-soil landscape maps of Alaska, Canada, and Siberia to upscale the water body distributions to the circum-arctic. We here present regional distribution parameters, i.e. pond and lake fractions as well as PDF moments (mean surface area, standard deviation, and skewness) and their uncertainties. Younger landscapes, that developed in the early Holocene exhibit very skewed water body distributions. These landscapes are dominated by many ponds and feature only very few large lakes. Older landscapes, on the other hand, show more larger lakes but also a higher variability in pond and lake size. For lakes smaller than 5*10⁵ m², PDFs change in a regular fashion across all sites: Relationships between mean surface area and standard deviation show a linear behaviour whereas the correlation between mean and skewness log-normal. We hypothesize that these relationships are an expression of pond and lake growth and/or lake formation in the landscapes and discuss the potential of the observed patterns to improve predictions of future distributions of Arctic ponds and lakes.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    Electronic Resource
    Electronic Resource
    Messung der zirkularen Polarisation der Inneren Bremsstrahlung von90Y (1976)
    Springer
    The European physical journal 276 (1976), S. 71-74 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The circular polarization of the Internal Bremsstrahlung (IB) of90Y was measured with a Compton polarimeter according to Beard and Rose. The results are compatible with the theoretical predictions of Ford and Martin [8], who include “detour transitions” in their calculations of the circular polarization. Measurements ofΒ-γ-correlations of the IB of90Y are discussed, which suggest the consideration of detour transitions too.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01414596
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Haltbarkeitsgefährdung von Limonaden durch Hefen (1968)
    Springer
    European food research and technology 138 (1968), S. 343-351 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zusammenfassung Nach einführender Behandlung einiger Eigenschaften der Hefen und Angaben über ihre Verbreitung werden quantitative Versuche über die Hefeentwicklung in fruchttrüben Limonaden beschrieben. Aus den Versuchsergebnissen konnten Hinweise für die zu erwartende Haltbarkeitsdauer hefeinfizierter Limonaden abgeleitet werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01629844
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Die Bildung von Huminsäuren aus14C-markierter Pflanzensubstanz im Boden (1966)
    Springer
    Naturwissenschaften 53 (1966), S. 384-384 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01185151
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Über den Verbleib von14C bei der Entwicklung von Weizen aus14C-markiertem Saatgut (1967)
    Springer
    Naturwissenschaften 54 (1967), S. 45-45 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00680174
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Radiometrischer Nachweis der Cadmium-Anreicherung im Mehlkörper des Weizenkornes nach Cadmium-Zufuhr zum Boden (1976)
    Springer
    Naturwissenschaften 63 (1976), S. 483-483 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624585
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Carbon mineralization and microbial activity in a field site trial used for 14C turnover experiments over a period of 30 years (2000)
    Springer
    Biology and fertility of soils 31 (2000), S. 294-302 
    Details
    ISSN: 1432-0789
    Keywords: Key words Carbon mineralization ; 14C ; Soil microbial biomass ; Manure amendment ; Long-term experiment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  Long-term experiments on different crop management systems provide essential information about turnover of soil organic matter and changes in microbial properties over a period of time. A long-term field site trial, which was established in 1967 near Vienna, Austria, to document the fate of 14C-labelled manure (straw and farmyard) under different crop management systems (crop rotation, spring wheat and bare fallow), was investigated. Soil samples were taken in 1997 and separated into size fractions (〉250 μm, 250–63 μm, 63–2 μm, 2–0.1 μm and 〈0.1 μm) after aggregate dispersion using low-energy sonication. Organic C, total N and 14C content were measured in the bulk soil and the size fractions and microbial properties were analysed in the bulk soil. Additionally, C mineralization in bulk soil samples was monitored at 20 °C over a period of 28 days, and subsequently 14C-CO2 content was analysed. The distribution of organic C and N within the size fractions was similar between crop rotation and spring wheat; the highest amounts of organic C and N were found in the clay-sized fraction. The amounts of C and N were significantly smaller in the bare fallow, which was depleted of organic matter in the coarse-sized fractions. 14C distribution differed significantly from unlabelled C distribution, labelled C was accumulated in the silt-sized fraction, indicating weak humification of the applied manure C. The highest rate of C mineralization was measured in the crop rotation and spring wheat, whereas the emission rate of the bare fallow was about 40% lower. The higher 14C:C ratio of the bulk soil in comparison to the emitted CO2 indicated that labelled C compounds still remained mineralizable after a period of 30 years. Microbial properties showed a great difference between crop management systems and bare fallow, particularly regarding urease and xylanase activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003740050659
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Analyseprogramm zur quantitativen Erfassung chromosomaler Aberrationen mittels komparativer genomischer Hybridisierung (CGH)*** (1996)
    Springer
    Der Pathologe 17 (1996), S. 342-348 
    Details
    ISSN: 1432-1963
    Keywords: Schlüsselwörter Komparative genomische Hybridisierung ; CGH ; Bildanalyse ; FISH ; Key words Comparative genomic hybridization ; CGH ; Image analysis ; Tumour cytogenetics ; FISH
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Comparative genomic hybridization (CGH) is a molecular cytogenetic method for the detection of chromosomal imbalances between a tumor and a normal genome. In order to produce quantitative and reproducible results, we developed an image analysis program that allows the detection and mapping of the genetic alterations. The result is represented as a CGH sum karyogram in which the genetic changes are documented as color coded-chromosomes. The aim of our investigation is to correlate the genotype with the phenotype on the basis of CGH sum karyograms and thus to achieve a genetic characterization that will supplement the morphological tumor description.
    Notes: Zusammenfassung Die komparative genomische Hybridisierung („comparative genomic hybridization“, CGH) ist ein molekularzytogenetisches Verfahren, welches die umfassende Analyse eines Tumorgenoms auf Über- und Unterrepräsentationen von DNA-Abschnitten ermöglicht. Um quantitative und reproduzierbare Aussagen über die genetischen Aberrationen machen zu können, wurde eine Software entwickelt, welche die objektive Erfassung von Ort und Art der Veränderungen ermöglicht. Das Ergebnis wird in Form eines CGH-Summenkaryogramms dargestellt, welches die genetischen Veränderungen als farbkodierte Chromosomen dokumentiert. Ziel dieser Untersuchungen ist es, auf der Grundlage von Summen-Karyogrammen eine Korrelation zwischen Genotyp und Phänotyp herzustellen und damit eine genetische Charakterisierung von Tumoren zu erreichen, die die morphologische Beschreibung ergänzt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002920050171
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    3-Methylglutaconic aciduria: a phenotype in which activity of 3-methylglutaconyl-coenzyme A hydratase is normal (1988)
    Springer
    European journal of pediatrics 148 (1988), S. 76-82 
    Details
    ISSN: 1432-1076
    Keywords: 3-Methylglutaconic aciduria ; 3-Methylglutaric aciduria ; 3-Methylglutaconyl-coenzyme A hydratase ; Phenotype ; Psychomotor retardation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract 3-Methylglutaconic aciduria has been found in two distinct syndromes. In one there is deficient activity of 3-methylglutaconyl coenzyme A hydratase, and the only clinical manifestation observed has been retardation of speech development. In the other, which includes a majority of the patients studied, we document that the activity of this enzyme in fibroblast extracts is normal. The phenotype of this disorder is one of profound neurological impairment with retarded psychomotor development, hypotonicity and/or spasticity, convulsions or EEG abnormalities, and sensorineural changes in the eye and ear.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00441821
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Irregularities of sequences relative to arithmetic progressions (1967)
    Springer
    Mathematische Annalen 169 (1967), S. 1-25 
    Details
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01399529
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...