Essays about: "headwater streams"

Showing result 11 - 15 of 24 essays containing the words headwater streams.

  1. 11. Quantification of Terrestrial CO2 Sources to a Headwater Streamin a Boreal Forest Catchment

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Elin Hultin Eriksson; [2016]
    Keywords : Deep soil respiration; headwater streams; lateral CO2 export; CO2 storage; riparian zone; Krycklan; Djup jordrespiration; bäckar; lateral CO2-export; CO2-lagring; riparianzon; Krycklan;

    Abstract : Carbon Dioxide (CO2) emissions from streams are a significant component of the global carbon cycle.Terrestrial export of CO2 through runoff is increasingly recognized as a major source of CO2 in boreal headwater streams. READ MORE

  3. 12. The Origin of Streams : Stream cartography in Swiss pre alpine headwater

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Oskar Sjöberg; [2016]
    Keywords : Temporary stream; Stream cartography; Drainage density; Hydrological connection; Topographic wetness index; Upslope accumulated area; Stream head; Headwater catchment;

    Abstract : Temporary streams have received undeservedly little scientific attention and as a result their role in hydrological, biogeochemical and ecological processes is not yet fully understood. The ultimate goal of the research was to gain a better understanding of the temporary stream network and the processes that control it and determine how the active and connected stream length change with catchment wetness conditions to find simple methods to map seasonal and event-based changes in temporary flowing stream networks. READ MORE

  4. 13. Decomposition of leaf litter in headwater streams. : Effects of changes in the environment and contribution of microbial and shredder activity on litter decomposition.

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

    Author : Johan Lidman; [2015]
    Keywords : Leaf-litter decomposition; headwaters; microbial decomposition; shredders; ecosystem adaptation;

    Abstract : Headwaters, which are the most common stream order in the landscape, are mostly dependent on energy produced in the terrestrial system, largely consisting of leaf litter from riparian vegetation. The aim of this study was to investigate the decomposition in headwaters of leaf litter from three native (alder, birch, spruce) and one non-native (lodgepole pine) species and how decomposition responds to changes in the environment. READ MORE

  5. 14. En utvärdering av de skogliga vattenplaneringsverktygen NPK+ och Blå målklassning med avseende på vattenkvalitet och vattenkemi

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Ragna Lestander; [2014]
    Keywords : Skogsbruk; skogsvattendrag; vattenplanering; naturvärde; påverkan; känslighet; EU:s vattendirektiv; ytvattenstatus; försurning; övergödning; Forestry; boreal streams; water planning; biodiversity; impact; sensitivity; EU Water Framework Directive; surface status; acidification; eutrophication;

    Abstract : Intresset för vattenfrågor har ökat efter införandet av EU:s ramdirektiv för vatten (vattendirektivet, 2000/60/EG) och inneburit att vattenvård och hänsynstagande till vatten inom skogsbruket fått större fokus. Målet med vattendirektivet är att alla vatten inom EU (Europeiska Unionen) ska erhålla en god kemisk och ekologisk status innan år 2015 samt att ingen försämring får ske. READ MORE

  6. 15. How does nutrients and light affect algal growth in Swedish headwater streams? : A study using nutrient diffusing substrate and natural gradients of light

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

    Author : Jannika Andersson; [2014]
    Keywords : : boreal streams; algal productivity; N limitation; nutrient diffusing substrate; incident light;

    Abstract : Gaining knowledge about what factors determine benthic algal biomass and productivity is vital for understanding food webs in aquatic systems, especially in woodland streams with naturally low rates of primary productivity. The aim of this study was to investigate what factors determine algal growth in Swedish headwater streams. READ MORE