Essays about: "Relative fitness"

Showing result 1 - 5 of 10 essays containing the words Relative fitness.

  1. 1. Multifaceted effects of competition and plant-soil feedbacks on Achillea millefolium grown in soil from a riparian meadow : Emil Karlsson - Umeå University - Thesis project - 60 hp

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Emil Karlsson; [2021]
    Keywords : Plant; Competition; Plant soil feedback; Yarrow; Achillea millefolium; Centaurea cyanus; Soil; pH; Nitrate; Ammonium; Nitrogen; Soil texture; Light; Sweden; Height; Biomass; Field; Growth chamber; Greenhouse; Ecology; Relative fitness; Stabilizing niche; Konkurrens; Jordmån; Kärlväxter; Röllika; Blåklint;

    Abstract : Competition between plant individuals and how plants alter soil properties are key processes which drive changes in plant communities over time. Estimating the relative importance of these processes and how they affect plant growth in different ecological contexts and communities is an active area of research. READ MORE

  2. 2. Gene overexpression screens to identify limitations on the productivity of cyanobacteria growth

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Tobias Willi; [2020]
    Keywords : Cyanobacteria; Dub-sequencing; competitive growth; overexpression library; Synechocystis 6803; Synechococcus 7002; Synechococcus UTEX 2973; Photobioreactor; Conjugation; mobA;

    Abstract : Cyanobacteria are a model organism for photosynthesis and the Calvin cycle, and a promising chassis for 4th generation biofuel production. There are many ongoing efforts to improve the performance of cyanobacteria, in terms of CO2 fixation and production rate of biofuels. READ MORE

  3. 3. An investigation into whether poaching creates an ecological trap for white rhinoceros in Hluhluwe-iMfolozi Park, South Africa

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Alice Michel; [2019]
    Keywords : ecological trap; rhinoceros; maladaptation; megaherbivore; source-sink; habitat quality; middens;

    Abstract : In an ecological trap, animals choose habitat based upon cues that once led members of their species to optimal habitat, but now lead to habitat where individual fitness is reduced because of changing conditions. The southern white rhinoceros (Ceratotherium simum) is a threatened species due to poaching for its keratin horn. READ MORE

  4. 4. Effects of diet quality and quantity on resource use, growth and fatty-acid composition of a benthic generalist consumer.

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Adrian Grieve; [2017]
    Keywords : Food quality; allochthonous; autochthonous; consumer diet; somatic growth; fatty acids; stable isotopes.;

    Abstract : Variation in quality and quantity of food resources can affect consumer productivity responses throughout the food chain, particularly the efficiency at which basal resources are converted to consumer biomass. I performed a manipulative feeding experiment to investigate the somatic growth and fatty acid incorporation in the benthic generalist isopod Asellus aquaticus, in response to differing ratios of autochthonous (high quality algae) to allochthonous (low quality leaf litter) foods. READ MORE

  5. 5. HisA mutants with minor structural differences display major functional deviations

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildningUppsala universitet/Struktur- och molekylärbiologi

    Author : András Erdélyi; [2016]
    Keywords : ;

    Abstract : Even though enzymes tend to specialize on one reaction during evolution, enzyme promiscuity is an abundant phenomenon. The subject of this thesis is the Salmonella enterica N’-[(5’-phosphosoribosyl)-formimino]-5-aminoimidazole-4 carboxamide-ribonucleotide (ProFAR) isomerase (SeHisA), a (βα)8-barrel enzyme from the histidine biosynthesis that catalyzes one reaction on one substrate in one organism. READ MORE