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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.
11

The effect of forest management and plant dominant on nitrogen transformation in soils of acidified mountain spruce forests in the Bohemian Forest National Park

STAŇKOVÁ, Pavla January 2013 (has links)
The aim of this study was to compare and contrast mineral and microbial nitrogen concentrations in soils of semi-natural and natural mountain spruce forests in the Březník area, the Bohemian Forest National Park, under dead wood and four plant dominants with respect to different forest management after windstorm and bark beetle events applied in 1997.
12

Plynné produkty mikrobiálního rozkladu v umělém mokřadu využívaném pro čištění odpadních vod / Gaseous products of microbial decomposition of organic pollution in constructed wetland used for wastewater treatment.

ŠTĚPÁNEK, Jindřich January 2007 (has links)
This master thesis is dealing with monitoring of gaseous products of microbial decomposition of organic pollution in constructed wetland. This wetland was used for wastewater treatment in a village Slavošovice, Czech Republic. Emissions of CO2, CH4 and N2O were measured in one treatment bed of the system. The emissions were quantified, their seasonal course was followed, and the main factors affecting gaseous emissions were identified. Only 3 % of total C emissions were in form of methane, N2O emissions were negligible and only 1,5 % of nitrogen denitrified were in form of N2O. Carbon and nitrogen balances of the system were estimated.
13

The Role of Biological Production in Pleistocene Atmospheric Carbon Dioxide Variations and the Nitrogen Isotope Dynamics of the Southern Ocean.

Sigman, Daniel M., January 1997 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology and Woods Hole Oceanographic Institution Joint Program in Oceanography/Applied Ocean Science and Engineering, 1997. / "September 1997." "Funding was provided by National Science Foundation Grant OCE-9201286, National Science Foundation Graduate Fellowship Program, and the JOI/USSAC Ocean Drilling Graduate Fellowship Program." Includes bibliographical references (p. 152-153).

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