Essays about: "rivers"

Showing result 1 - 5 of 198 essays containing the word rivers.

  1. 1. CARBONDIOXIDE FLUXES FROM A CONTROLLED BOREAL RIVER

    University essay from Mittuniversitetet/Avdelningen för ekoteknik och hållbart byggande

    Author : FRANK ARTHUR; [2018]
    Keywords : Carbon dioxide fluxes; Gas transfer Velocity; Turbulence; Eddy covariance; Stream flow; Wind speed; Global Carbon cycle; Latent and sensible heat fluxes.;

    Abstract : River, lakes and   streams account for more carbon dioxide emissions than all other freshwater   reservoirs together. However, there is still lack of knowledge of the   physical processes that control the efficiency of the air-water exchange of   CO2 in these aquatic systems. READ MORE

  2. 2. Organic nitrogen and carbon in Swedish rivers : increasing trends from 1987-2017

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Maya Ahlgren; [2018]
    Keywords : total organic nitrogen; total organic carbon; eutrophication; Sweden; dissolved organic carbon; brownification; Pearson’s correlation; Baltic Sea; Earth and Environmental Sciences;

    Abstract : In the past decades, increased organic carbon concentrations have been reported from freshwaters across the Northern Hemisphere. However, there is little knowledge regarding whether or not these changes are linked to increasing concentrations of organic nitrogen. READ MORE

  3. 3. Local perceptions of changes in ecosystem services and climate : case study in Ecuadorean Sierra

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Anna Sundqvist; [2018]
    Keywords : traditional ecological knowledge; ecosystem services and goods; climate change;

    Abstract : Anthropogenic-induced land-use and land-cover change is a threat to biodiversity and ecosystem services, and contribute to global climate warming. Forests are essential in the climate system and store a large part of the global carbon. READ MORE

  4. 4. Defining habitat demands of Wels catfish (Silurus glanis) in a Swedish lake : a look into muddy waters

    University essay from SLU/Dept. Of Aquatic Resources

    Author : David Spange; [2018]
    Keywords : Wels catfish; Silurus glanis; Sweden; Spawning; Spawning habitats; acoustic camera; ARIS; telemetry;

    Abstract : The wels catfish (Silurus glanis) is a rare species in Swedish waters, it demands higher water temperatures than most lakes and rivers can offer. One of the few locations with naturally occurring wels catfish in Sweden is Lake Båven, situated about an hour and a half south of Stockholm, in the county of Södermanland. READ MORE

  5. 5. Jaktens påverkan på bäverpopulationen i Färnebofjärdens nationalpark

    University essay from SLU/Dept. of Ecology

    Author : Elina Eriksson; [2018]
    Keywords : bäver; bäverjakt; jakttryck; Färnebofjärdens nationalpark;

    Abstract : The beaver hunt in Färnebofjärdens national park started in 2002. The aim of the hunt was to decrease the beaver population and save the deciduous trees close to the waterline which are very important for many other species in the national park. The northern part of the national park is however free from beaver hunt. READ MORE