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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Continental-scale validation of the temperature signal in oxygen isotopes of Sphagnum cellulose and its application as a paleoclimate proxy

Taylor, Meghan. January 2008 (has links)
Thesis (M.S.)--University of Wyoming, 2008. / Title from PDF title page (viewed on Jan. 19, 2010). Includes bibliographical references.
32

Studies on the effect of the admixture of mineral soil upon the thermal conditions of cultivated peat land

Pessi, Yrjö. January 1956 (has links)
Thesis--University of Helsinki. / Bibliography: p. [85]-87.
33

Pedological studies of Icelandic peat soils

Gudmundsson, Thorsteinn January 1978 (has links)
The first chapter is a brief review of the geology, geography and the soils in Iceland, with particular reference to peat soils. The field work (Chapter 2) included measuring the thickness of organic layers between dated tephra layers and it was found that the mean rate of thickening of the peat was slowest 0.1 mm/year in the period 4500 to 2900 B. P., but fastest 0.26 mm/year in the period since 1104 A. D. Two profiles were selected for detailed study, one in north Iceland, and the other in west Iceland. Micromorphology, physical, and chemical properties were investigated, see-Chapters 3,4 and 5 respectively; and a review of peat soil classification and the application to the soils studied is given in Chapter 6. The main constituents observed in the thin sections were underground plant organs, fine organic material, and mineral material. Woody, cork, epidermal and lign ifi ed tissues were best preserved, parenchymatous tissue had predominantly disappeared, but was present in some leaf and herbaceous root residues. Conspicuous secondary mineral phenomena included bog iron, pyrite and siderite; and in Chapter 7a hypothesis is proposed for the formation of s ider it e. The range of hydraulic conductivies was from about 9.10-3 to 1_ 10-4 cm sec-1 . The moisture content at saturation was mainly > 90 , and 10 to 20; 4 at pr 4.2. Bulk density was mainly 0.1 to 0.2 g cm-1 in organic layers and up to 0.5 g cm-1 in those rich in mineral material. Most samples shrunk to less than half the original volume upon oven drying and it was concluded that it is important to consider shrinkage when moisture retention is determined. The pH in water was highest at 6.8 in the top layer of the profile in north Iceland, but was mainly 4.4 to 5.0 in the organic layers. The loss on ignition of the organic layers varied mainly from 40; ') to 90 The C/N range was normally 17 to 30, but lowest at 15 in the top layer of the profile from North Iceland
34

The influence of nutrient supply on the morphology of Sphagnum cuspidatum

Baker, Richard George Egerton January 1988 (has links)
No description available.
35

Synthesis gas production from peat using a steam plasma

Stuart, Paul R. (Paul Réne) January 1984 (has links)
No description available.
36

A dynamic process model of palsa genesis and development based on geomorphologic investigations at the Boundary Ridge palsa bog near Schefferville, Québec

Carlson, David Alan. January 1900 (has links)
Thesis (M.Sc.). / Title from title page of PDF (viewed 2008/01/30). Written for the Dept. of Geography. Includes bibliographical references.
37

Pollen analysis of mid-Altonian peat in Schelke Bog, Lincoln County, Wisconsin

Dirlam, Dona Mary. January 1979 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 19-20).
38

Characteristics of a developmental sequence of histosols in Wisconsin

Frazier, Bruce Edwin, January 1969 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1969. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
39

Entstehung, Aufbau und Eigenarten der Moore sowie ihre Bedeutung für die Kultur, unter besonderer Berücksichtigung der nordwestdeutschen Moorgebiete ...

Benze, Erich Franz Ernst, January 1911 (has links)
Inaug.-Diss.--Erlangen. / Lebenslauf. "Literaturverzeichnis": p. [vii]-ix.
40

Micromorphology of a saprist

Manoch, Bamrung, January 1970 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

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