Essays about: "ecotypes"

Showing result 1 - 5 of 20 essays containing the word ecotypes.

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

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

    Author : Joni Riihimaa; [2023]
    Keywords : Coregonus lavaretus; Hatching time; Spawning habitat; Spawning time; Temperature dependence;

    Abstract : 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). READ MORE

  3. 2. Vad vet vi om ekotyper? : kunskap och okunskap som påverkar utbudet av torktåliga ekotyper

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

    Author : Martin Svennerfors; [2023]
    Keywords : stadsträd; urban miljö; norra Europa; återförsäljare; beställare; forskning; botaniska trädgårdar; grön infrastruktur; kunskapsspridning; efterfrågan;

    Abstract : Träd i urbana miljöer har förmåga att mildra några av de klimatfaktorer som gör städer till alltmer utmanande platser att leva på för människor och växter. Växtmaterialet i framtidens gröna infrastruktur behöver vara anpassat till vattenbrist, som idag är den mest begränsande faktorn för urban växtlighet. READ MORE

  4. 3. Sex-associated genomic variation in two ecotypes of Littorina saxatilis on the Swedish west coast

    University essay from Göteborgs universitet/Institutionen för marina vetenskaper

    Author : Amin Ghane; [2022-09-26]
    Keywords : Littorina saxatilis; Sex chromosomes; Sex determination systems; Sex-associated genomic region;

    Abstract : Sex, one of the most conspicuous characteristics of living organisms, has always been fascinating for biologists. The diversity of sex goes much beyond a simple distinction between males and females. Many organisms have more than two mating entities, and many species show some degree of hermaphroditism, at least in part of their life cycle. READ MORE

  5. 4. Associations between body size polymorphism in Arctic charr and benthic invertebrate communities – clues to mechanisms for population differentiation?

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

    Author : Andreas Sund; [2022]
    Keywords : arctic charr; benthic invertebrates; polymorphism;

    Abstract : Many fish populations in the north have divided into coexisting ecotypes that differ in body size. While such polymorphic fish populations have been studied for many years, the understanding of how different types of selection contribute to the formation of dwarf- and giant ecotypes remains limited. READ MORE

  6. 5. The intraspecific drought tolerance of Betula pendula Roth. : ecotypic aptitude as tree selection criteria for the urban landscape

    University essay from SLU/Dept. of Plant Breeding (from 130101)

    Author : Simon Hannus; [2021]
    Keywords : Betula pendula; clinal variation; drought tolerance; ecosystem services; ecotypes; potential evapotranspiration; turgor loss point; urban forestry; urban resilience; urban tree selection;

    Abstract : The ecosystem services provided by urban trees are substantial contributors to the quality of urban living, and their environmentally regulating capabilities are increasingly regarded as integral in order to efficiently secure urban resilience, by ameliorating the human and material impacts of extreme weather events. However, current trends of urban development presents challenges of how to preserve urban greenery ecosystem functioning, particularly in light of the ongoing climate change; which also has brought forth the importance of taxonomically diverse urban forests, to mitigate risks of catastrophic tree loss associated with these conditions. READ MORE