Essays about: "plankton"

Showing result 26 - 30 of 30 essays containing the word plankton.

  1. 26. The influence of eutrophic conditions on the activity of the suspension-feeding barnacle Semibalanus balanoides

    University essay from Sektionen för ekonomi och teknik (SET)

    Author : Theresa Kunzel; [2008]
    Keywords : Eutrophication; Semibalanus balanoides; cirripedia; pumping activity; suspension-feeder;

    Abstract : Eutrophication is a current problem on coastal lines worldwide. Cirripedia like the northern acorn barnacle Semibalanus balanoides actively help to prevent high amounts of plankton in the coastal zones by filtering plankton out of the surrounding water. READ MORE

  3. 27. Årstidsdynamik för kvicksilver i ett sövattensediment

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

    Author : Anna Karlsson; [2008]
    Keywords : kvicksilver; metylering; sediment; sjöar;

    Abstract : The limit for mercury in fish, set by health authorities, is exceeded in about half of the lakes in Sweden. Methyl mercury (MeHg) is the most toxic form of mercury and accumulates in fish. READ MORE

  4. 28. Impact of Market Gardening on Surface Water Reservoirs in Burkina Faso - Impacts of current agricultural practices around the reservoir of Toukoumtouré, Nariarlé basin, on natural phytoplankton communities.

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Stina Pernholm; Wille Hyrkäs; [2007]
    Keywords : Physical geography; teknisk geologi; Hydrogeologi; geographical and geological engineering; Hydrogeology; West Africa; Reservoirs; Burkina Faso; cyanobacteria; reservoir; dam; environment; water; fertilizers; ecology; pesticides; IMPECA; phyto-PAM; fluorometer; market gardening; smallholders; small scale farming; paraquat; lambdacyhalothrin; LOEC; Lampride; Calloxone; surface water; irrigation; WPI; xenobiotics; phytoplankton; phytoplancton; Nariarlé; questionnaire; survey; evaporation; water balance; toxicity; engineering; socio-economic; water quality; bluegreen algae; algal bloom; anthropogenic; ecosystem; minor field study; MFS; Pernholm; Hyrkäs; Cecchi; Berndtsson; pollution; microorganisms; drinking water; Environmental studies; Miljöstudier; Naturvetenskap; Natural science; teknisk geografi; geomorphology; pedology; cartography; climatology; Fysisk geografi; geomorfologi; marklära; kartografi; klimatologi; Civil engineering; hydraulic engineering; offshore technology; soil mechanics; Väg- och vattenbyggnadsteknik; Earth and Environmental Sciences; Technology and Engineering;

    Abstract : An evaluation of the ecological status of 23 small water reservoirs in Burkina Faso was made in 2004 by IRD (Institut de Recherche pour le Développement), Large dominance of cyanobacteria in some of the reservoirs was one of the signs of an imbalance in the ecology of the water (Cecchi et al. 2005). READ MORE

  5. 29. Palaeomagnetic secular variations in the varved sediments of lake Gościąż, Poland : testing the stability of the natural remanent magnetization and validity of relative palaeointensity estimates

    University essay from Lunds universitet/Geologiska institutionen

    Author : Andreas Nilsson; [2006]
    Keywords : Palaeomagnetism; Holocene varved lake sediments; varve chronology; geomagnetic models; Holocena varviga sjösediment; varvkronologi; geomagnetiska modeller; Earth and Environmental Sciences;

    Abstract : Fyra två meter långa borrkärnor, med sjösediment från Gościąż, Polen, analyserades med hjälp av den s.k. Pseudo-Thellier metoden, en metod som används för att utvärdera tillförlitligheten av variationer av styrkan i det jordmagnetiska (palaeointensiteten) fältet över tiden. READ MORE

  6. 30. Aggregatstabilitet, jordbearbetning och fosforförluster i ett typområde på jordbruksmark

    University essay from SLU/Dept. of Soil Sciences

    Author : Anna Melakari; [2005]
    Keywords : aggregatstabilitet; jordbearbetning; fosforförluster; jordbruksmark;

    Abstract : Large amounts of phosphorus (P) are lost from the arable land due to water erosion. Both phosphorus attached to particles and dissolved phosphorus (mainly phosphate) are transported away with drainage-water and surface runoff. Good soil structure is important in minimizing these losses. READ MORE