Search for dissertations about: "lowland"

Showing result 1 - 5 of 32 swedish dissertations containing the word lowland.

  2. 1. Common Knowledge : lowland Maya urban farming at Xuch

    Author : Christian Isendahl; Luis Alberto Barba Pingarrón; Uppsala universitet; []
    Keywords : HUMANIORA; HUMANITIES; Archaeology; Ecological settlement archaeology; Maya; urbanism; agriculture; architecture; ceramics; geochemistry; vegetation; soils; archaeoclimatic modelling; Preclassic; Classic; Postclassic; Colonial; Xuch; Puuc; Campeche; Arkeologi; Archaeology subjects; Arkeologiämnen; arkeologi; Archaeology;

    Abstract : During the second half of the first millennium AD, several large urban communities developed in the Puuc region of the northwest Yucatán Peninsula. Investigations of architecture and ceramics at Xuch provide a spatio-chronological framework demonstrating the rapid growth of an urban settlement culminating in the Terminal Classic, and its subsequent decline. READ MORE

  4. 2. Traditional lowland rice agriculture in Sri Lanka : Nitrogen cycling and options for biofertilizers

    Author : Ola Palm; Linköpings universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Abstract : The aim of this thesis has been: to study the dynamics of soil organic-matter, with regard to nitrogen in a traditional lowland-rice agricultural system; to consider options for and nitrogen cycling of biofertilizers, especially the green-manure legume Sesbania sesban; to discuss fertilizer sources and management constraints as parts of a sustainable agricultural development; and to discnss the methodological problems of controlled experiments vs. investigations in farmer's fields. READ MORE

  5. 3. Changing Lowland Permafrost in Northern Sweden: Multiple Drivers of Past and Future Trends

    Author : Margareta Johansson; Institutionen för naturgeografi och ekosystemvetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Climate warming is more pronounced in the Arctic than in other parts of the world. This warming affects the terrestrial cryosphere including permafrost with consequences ranging from societal impacts to changes in hydrology and feedbacks in the climate system such as those imposed by changing greenhouse gas exchanges. READ MORE

  6. 4. Utilisation of health services in a transitional society : studies in Vietnam 1991-1999

    Author : Ngo Van Toan; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Utilisation; expenditure; exemption; reproductive health; outpatient services; transition; Vietnam.;

    Abstract : General objective: The general objective is to assess the utilisation of public health services among different social groups in a period of rapid policy and society changes in Vietnam. Methods: Studies on the utilisation of reproductive health services were based on one household survey conducted in a lowland district in 1992 and two other surveys performed in 1991 and 1994 in a highland district. READ MORE

  7. 5. Community and food web assembly on virgin habitat islands - The nunatak saga

    Author : Maria Ingimarsdottir; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; allochthonous material; arthropods; community assembly; corridor; dispersal; Iceland; metacommunity; nunataks; primary succession; stable isotopes.;

    Abstract : The classical view of primary community assembly is that colonisation by plants is essential before invertebrates can establish. It has been recognised, however, that invertebrates can establish before plants, and that they may be important in the first steps of community assembly. READ MORE