Search for dissertations about: "Herbivory"

Showing result 1 - 5 of 56 swedish dissertations containing the word Herbivory.

  1. 1. Light, stress and herbivory from photoprotection to trophic interactions using Arabidopsis thaliana as a model organism

    University dissertation from Umeå : Ekologi, miljö och geovetenskap

    Author : Martin Frenkel; Umeå universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arabidopsis thaliana; photoprotection; herbivory; light-stress; jasmonate; fitness; FDE; dual-choice; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Abstract : Photosynthesis is the most important process for nearly all life on earth. Photosynthetic organisms capture and transfer light energy from the sun into chemical energy which in turn provides a resource base for heterotrophic organisms. Natural light regimes are irregular and vary over magnitudes. READ MORE

  2. 2. Ecology and Evolution of Resistance to Herbivory Trichome Production in Arabidopsis lyrata

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Geir Løe; Högskolan i Gävle.; Uppsala universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Plant-animal interactions; herbivory; trichomes; plant resistance; plant defense; divergent selection; local adaptation; GLABROUS1; evolution; matrix population models; LTRE; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Biology; Biologi;

    Abstract : In this thesis, I examine variation in occurrence and performance of glabrous and trichome-producing plants of the perennial herb Arabidopsis lyrata. I combine field studies and genetic analysis to (1) examine the function of trichomes as a resistance character in natural populations, (2) compare the magnitude of population differentiation in trichome-production and at putatively neutral marker loci, (3) examine the molecular genetic basis of trichome-production, and (4) quantify the effects of herbivore removal on population growth and relative performance of glabrous and trichome-producing plants. READ MORE

  3. 3. Waterfowl herbivory on submerged macrophytes in eutrophic lakes

    University dissertation from Håkan Sandsten, Ecology Building, 22362 Lund, Sweden

    Author : Håkan Sandsten; Lunds universitet.; Lund University.; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; limnology; Marinbiologi; limnologi; Hydrobiology; Växtekologi; Plant ecology; akvatisk ekologi; Djurekologi; Animal ecology; Anas; Fulica atra; Cygnus; alternative stable states; water depth; distribution; plant species composition; hydrophytes; propagule size; Herbivory; tuber; Potamogeton; marine biology; aquatic ecology;

    Abstract : Popular Abstract in Swedish Sjöfåglar påverkar undervattensväxter Liksom korna på betesmarken betar och påverkar växter på olika sätt, kan växtätande sjöfåglar påverka växter i sjöar. Svanar, sothönor och änder äter ofta undervattensväxter och jag har undersökt hur växterna påverka's av detta. READ MORE

  4. 4. Effects of herbivory on arctic and alpine vegetation

    University dissertation from Stockholm : Botaniska institutionen

    Author : Åsa Lindgren; Stockholms universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; herbivory; reindeer; rodents; functional traits; plant species composition; arctic; alpine; tundra; seed limitation; Carex bigelowii; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Plant Ecology; växtekologi;

    Abstract : The distribution of plant species and functional traits in alpine and arctic environments are determined by abiotic conditions, but also by biotic interactions. In this thesis, I investigate interactions among plants and herbivory effects on plant community composition and plant functional traits in three different regions: Swedish Lapland, Beringia (USA/Russia) and Finnmark (Norway). READ MORE

  5. 5. Invading Herbivory. Effects of the Golden Apple Snail (Pomacea canaliculata) in Asian Wetlands

    University dissertation from Nils Carlsson Värbyvägen 206, 230 40 Bara, Sweden

    Author : Nils Carlsson; Lunds universitet.; Lund University.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; gastropoda; invasive species; golden apple snail; herbivory; wetland functioning; biodiversity; sustainable control; indigenous predators; size-dependent competitive ability; akvatisk ekologi; limnologi; Marinbiologi; limnology; Hydrobiology; aquatic ecology; marine biology;

    Abstract : Popular Abstract in Swedish Populärvetenskaplig sammanfattning av avhandlingen "Invading Herbivory. Effects of the Golden Apple Snail (Pomacea canaliculata) in Asian wetlands". 1980 förde några affärsmän ett okänt antal individer av den sydamerikanska vattensnäckan Pomacea canaliculata till Taiwan. READ MORE