Essays about: "macroinvertebrates"

Showing result 11 - 15 of 15 essays containing the word macroinvertebrates.

  1. 11. 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

  3. 12. Resource use by macroinvertebrates within boreal stream food webs

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

    Author : Emelie Landström; [2015]
    Keywords : Allochthonous; Autochthonous; Food webs; Boreal; Streams; Deuterium; Carbon;

    Abstract : Stream food webs are supported by carbon produced within the stream (autochthonous) and from terrestrial environments (allochthonous). Allochthonous carbon (C) inputs are assumed to be the dominant C source supporting food webs within small streams, but few direct estimates of resource use in small streams have been made, especially in boreal streams. READ MORE

  4. 13. Effects of beaver dams on benthic macroinvertebrates

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Andreas Johansson; [2014]
    Keywords : ;

    Abstract : In the 1870's the beaver (Castor fiber), population in Sweden had been exterminated. Thebeaver was reintroduced to Sweden from the Norwegian population between 1922 and 1939.Today the population has recovered and it is estimated that the population of C. fiber in all ofEurope today ranges around 639,000 individuals. READ MORE

  5. 14. Samband mellan vattenkemi, ekosystemstruktur och -funktion i två dagvattendammar

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Virginia Günes; [2012]
    Keywords : Dagvattendamm; Ekosystemfunktion; Lövpåsar; Nedbrytning;

    Abstract : Dagvatten bildas då regnvatten inte kan infiltrera marken på grund av hårdgjorda ytor såsom vägar och hustak. Dagvatten är ofta kontaminerat av metaller, näringsämnen och andra föroreningar och bör därför renas i en anläggning innan det når recipient. READ MORE

  6. 15. Effects of the insecticide Deltamethrin on benthic macroinvertebrates – field and laboratory studies

    University essay from SLU/Dept. of Environmental Assessment

    Author : Christina Arbjörk; [2004]
    Keywords : benthic macroinvertebrates; Deltamethrin; field- and laboratory studies;

    Abstract : .... READ MORE