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Found 3 essays matching the above criteria.

  1. 1. Local and landscape effects on the diversity of plant communities in Swedish beaver ponds

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Joel Lönnqvist; [2014]
    Keywords : beaver pond; Castor fiber; aquatic plants; hydrophytes; helophytes; macrophytes; landscape; nitrogen; plant dispersal; catchment;

    Abstract : The European beaver Castor fiber is considered an ecosystem engineer and a key species because of its dam building behavior. Little is known about the factors affecting plant diversity in beaver impounded streams. This study aimed to investigate if local and landscape variables affect plant diversity of beaver ponds. READ MORE

  3. 2. Polygon ponds and their ostracode assemblages as bioindicators in the Indigirka Lowland (north-east Siberia)

    University essay from Institutionen för naturgeografi och kvartärgeologi (INK)

    Author : Andrea Schneider; [2013]
    Keywords : arctic limnology; polygon ponds; biological indicators; freshwater ostracods; stable water isotopes;

    Abstract : Freshwater ostracods (crustacea, ostracoda) are sensitive to environmental conditions, and are widely used as biological indicators for past and present environmental changes. The abundance and diversity of ostracods from permafrost areas is currently documented in scattered records with incomplete ecological characterizations. READ MORE

  4. 3. Utformning av dagvattendammar genom tri-valent design

    University essay from SLU/Dept. of Urban and Rural Development

    Author : Anton Simonsson; [2012]
    Keywords : Dagvatten; dagvattendamm; dagvattenhantering; ekologisk hållbarhet; tri-valent design;

    Abstract : Ian Thompson använder i boken Ecology, Community and Delight ett begrepp benämnt tri-valent design, vilket kan jämställas vid ett optimum för en landskapsarkitekts arbete att gestalta tilltalande platser. Thompson förklarar att begreppets kärna uppnås då en plats uppvisar en harmonisk kombination av sociala, ekologiska och estetiska värden samtidigt. READ MORE