Essays about: "Macroinvertebrates"

Showing result 1 - 5 of 6 essays containing the word Macroinvertebrates.

  1. 1. Seasonal community dynamics of macroinvertebrates in an Arctic stream

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

    Author : Ellinor Jakobsson; [2019]
    Keywords : Macroinvertebrates; Arctic; seasonality; community composition; Abisko;

    Abstract : Arctic ecosystems are amongst the most vulnerable on Earth to ongoing climate change. While the responses to these changes are well studied on land, less is known about how aquatic communities may respond to a warmer arctic. READ MORE

  2. 2. Effects of a fish farm on downstream macroinvertebrates

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

    Author : Joakim Thoresson; [2018]
    Keywords : ;

    Abstract : The number of fish farms is increasing worldwide tomeet the global demand for fish used as a food source for humans. The WorldBank predicts that by 2030, 62 percent of all consumed fish globally will beproduced in fish farms. Due to this increasing demand for fish, fish farming isa growing business and the numbers of fish farms are increasing. READ MORE

  3. 3. 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

  4. 4. 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

  5. 5. 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