Sökning: "Hatching"

Visar resultat 1 - 5 av 46 uppsatser innehållade ordet Hatching.

  1. 1. BSF-colony management efficiency at a large scale fly larvae composting company in Kenya – A field study

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Hilda Anderberg; [2023]
    Nyckelord :Black soldier fly composting; BSF-colony; industrial scale; parasitic wasps; Amerikansk vapenfluga; fluglarvskompostering; storskaligt; parasitsteklar;

    Sammanfattning : The majority of organic waste globally is either dumped or placed on landfills, which can result in spreading of disease and pests, methane gas emissions, the deterioration of landscapes and odour pollution. One of the solutions to poor organic waste management is to create value from waste. LÄS MER

  3. 2. Evaluation of River Restoration Measures: Interstitial Habitat Variables and Salmon Hatching Rates as Indicators of Success

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning; Uppsala universitet/Limnologi

    Författare :Jonas Emanuelsson; [2023]
    Nyckelord :;

    Sammanfattning : River ecosystems are some of the most complex ecosystems on Earth, characterized by a highly heterogenous environment which is able to sustain a disproportionally high level of biodiversity in relation to the area of which they occupy. However, anthropogenic activities are encroaching on the highly diverse riverine landscape, threatening freshwater biodiversity. LÄS MER

  4. 3. Egg-laying and nesting behavior of common eider at Stora Karlsö

    Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Anna Olsson; [2023]
    Nyckelord :;

    Sammanfattning : The population of common eider (Somateria mollissima) has suffered a dramatic decline in several breeding locations since the 1990s. Predation is described as one of the main reasons, along with other suggested explanations such as food shortage, environmental pollutants, and thiamine shortage. LÄS MER

  5. 4. Can spawning site temperature regimes cause spawning time divergence in sympatric whitefish ecotypes? : Comparison of two hypotheses

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Joni Riihimaa; [2023]
    Nyckelord :Coregonus lavaretus; Hatching time; Spawning habitat; Spawning time; Temperature dependence;

    Sammanfattning : The spawning time differs between sympatric ecotypes of lake-dwelling whitefish (Coregonus lavaretus) and this temporal divergence can be linked to the type of spawning habitat used (i.e., streams, littoral or profundal). LÄS MER

  7. 5. Är det storleken som räknas? : Hur påverkar värdväxtens bladform och bladstorlek äggkläckningsfrekvensen hos ägg av violett guldvinge (Lycaena helle)?

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Sigrid Sjösteen; [2023]
    Nyckelord :Lycaena helle; Lycaenidae; habitat quality; Bistorta vivipara; ;

    Sammanfattning : The violet copper (Lycaena helle) is one of the most endangered butterflies in Europe, with a population pattern of steady decline despite consevation efforts. The main threat to the species is believed to be habitat fragmentation and loss due to changes in land use practices. LÄS MER