Sökning: "Fish metrics"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Fish metrics.

  1. 1. Evaluation of restoration efforts in Dalälven - conditions for survival rate of Salmo trutta and Salmo salar

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Ville Svärd; [2023]
    Nyckelord :Restoration; river; salmonids; benthic fauna;

    Sammanfattning : Rivers are among the most anthropogenically affected ecosystems in the world by irrigation, transportation, channelizing, and hydropower. Habitat restorations have become a popular method to restore the heterogeneity and complexity of rivers aiming for improvement of biodiversity. LÄS MER

  3. 2. Restoration effects on benthic macroinvertebrate diversity and community composition in a river

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Fredrik Laggar; [2023]
    Nyckelord :Benthic invertebrates; diversity; communtiy composition;

    Sammanfattning : Physical restoration efforts are common methods to restore running waters containingdegraded ecosystems due to anthropogenic activities such as irrigation, ditching, dammingand flood prevention. The goal is usually to restore waters to a more natural state, creatingmore physically complex habitats supporting a larger number of species of both fish andinvertebrates, hence increasing biodiversity. LÄS MER

  4. 3. Investigating eco-hydrological relationships between fishes and flow regimes in Spanish rivers

    Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Celia Ramos Sanchez; [2021]
    Nyckelord :Eco-hydrological relationships; Fish metrics; Hydrological metrics; Environmental flows; Hydrological alteration; Technology and Engineering;

    Sammanfattning : There is currently a need in Spain for monitoring the effects of the environmental flows. The use of eco-hydrological relationships to design both environmental flows regimes and the monitoring programs that track their effects on riverine ecosystems is highly recommended. LÄS MER

  5. 4. Factors Controlling Mercury Concentration in Rivers in the Mackenzie River Basin, Northwestern Canada

    Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Jack Hewitt; [2020]
    Nyckelord :mercury; Mackenzie River Basin; regression; Canada; community-based water monitoring;

    Sammanfattning : Mercury (Hg) in rivers and streams of the Mackenzie River Basin (MRB) presents a risk to fish, aquatic mammals, and humans. This thesis makes use of newly-released water quality data, including total mercury (THg) and dissolved mercury (DHg), gathered through the NWT-Wide Community-based Water Quality Monitoring (CBM) program. LÄS MER

  7. 5. Freshwater pearl mussel as indicators of Swedish streams - a comparison between freshwater pearl mussel and biological quality elements

    Kandidat-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

    Författare :Kristin Forsell; [2014]
    Nyckelord :flodpärlmussla; biologiska kvalitetsfaktorer; freshwater pearl mussel; biological quality elements;

    Sammanfattning : The freshwater pearl mussel (Margaritifera margaritifera) is a large freshwater mussel. Because of its sensitivity to human impact, such as eutrophication, acidification and alterations of hydromorphology, the species is considered as a robust indicator of stream water quality and biodiversity. LÄS MER