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  • 1.
    Andersson, Ramon
    Högskolan i Halmstad.
    Hållbart jordbruk inom vattenskyddsområde: En studie om Sverige, Danmark, Frankrike och Tyskland2015Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    To guarantee protection of our drinking water, water catchment protections are established. These are divided into three different zones and in the first zone it is most likely that an activity, such as agriculture, will contaminate the water resource. Hence the activities are strongly regulated or banned. The EU communion is working towards a sustained water quality through several directives; Nitrate Directive, Waterframwork directives and Sustainable use of pesticide directive. The main purpose is to regulate the diffuse pollution from agriculture.This thesis is about how Denmark, Germany and France are working towards a sustainable agriculture within water protection areas. Sweden is also discussed but mainly about two different methods applied in Linköpings and Ljungbys municipalties.How the different countries work is mainly the same due to the directives. However, there are some interesting water management methods to observe such as voluntary agreements between water companies and farmers. Moreover, the sustainability perspective is approached in a larger scale where you and I as consumers also contribute via consumer-pays-principle. Therefore, we are, by our demand for water, the problem but also the solution and together we can contribute with good social, economic and ecological conditions for ourselves and the farmer.

  • 2.
    Furey, Paula C.
    et al.
    St. Catherine University, St. Paul, MN, USA.
    Liess, Antonia
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lee, Sylvia
    U.S. Environmental Protection Agency, Arlington, VA, USA .
    Substratum-Associated Microbiota2017Ingår i: Water environment research, ISSN 1061-4303, E-ISSN 1554-7531, Vol. 89, nr 10, s. 1634-1675Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This survey of literature on substratum-associated microbiota from 2016 includes highlights of research findings associated with algae, cyanobacteria, and bacteria from a variety of aquatic environments, but primarily freshwaters. It covers topics of relevance to the Water Environment Federation along with those of emerging or recent interest such as nuisance, bloom forming and harmful algae, fossil fuel related contamination, and other environmental pollutants like nanoparticles. Additional interesting findings reported on include general ecology, method development, multistressor interactions, nutrient cycling, taxonomy and systematics, trophic interactions, and biomonitoring, bioassessment, and bioremediation.  © 2017 Water Environment Federation

  • 3.
    Meunier, Cédric L.
    et al.
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden.
    Liess, Antonia
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden.
    Andersson, Agneta
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden & Umeå Marine Sciences Centre, Norrbyn, Hörnefors, Sweden.
    Brugel, Sonia
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden & Umeå Marine Sciences Centre, Norrbyn, Hörnefors, Sweden.
    Paczkowska, Joanna
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden & Umeå Marine Sciences Centre, Norrbyn, Hörnefors, Sweden.
    Rahman, Habib
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden.
    Skoglund, Björn
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden.
    Rowe, Owen F.
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden & Umeå Marine Sciences Centre, Norrbyn, Hörnefors, Sweden.
    Allochthonous carbon is a major driver of the microbial food web - A mesocosm study simulating elevated terrestrial matter runoff2017Ingår i: Marine Environmental Research, ISSN 0141-1136, E-ISSN 1879-0291, Vol. 129, s. 236-244Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Climate change predictions indicate that coastal and estuarine environments will receive increased terrestrial runoff via increased river discharge. This discharge transports allochthonous material, containing bioavailable nutrients and light attenuating matter. Since light and nutrients are important drivers ofbasal production, their relative and absolute availability have important consequences for the base of the aquatic food web, with potential ramifications for higher trophic levels. Here, we investigated the effects of shifts in terrestrial organic matter and light availability on basal producers and their grazers. In twelve Baltic Sea mesocosms, we simulated the effects of increased river runoff alone and in combination. We manipulated light (clear/shade) and carbon (added/not added) in a fully factorial design, with three replicates. We assessed microzooplankton grazing preferences in each treatment to assess whether increased terrestrial organic matter input would: (1) decrease the phytoplankton to bacterial biomass ratio, (2) shift microzooplanlcton diet from phytoplankton to bacteria, and (3) affect microzooplankton biomass. We found that carbon addition, but not reduced light levels per se resulted in lower phytoplanlcton to bacteria biomass ratios. Microzooplankton generally showed a strong feeding preference for phytoplanlcton over bacteria, but, in carbon-amended mesocosms which favored bacteria, microzooplankton shifted their diet towards bacteria. Furthermore, low total prey availability corresponded with low microzooplankton biomass and the highest bacteria/phytoplankton ratio. Overall our results suggest that in shallow coastal waters, modified with allochthonous matter from river discharge, light attenuation may be inconsequential for the basal producer balance, whereas increased allochthonous carbon, especially if readily bioavailable, favors bacteria over phytoplankton. We conclude that climate change induced shifts at the base of the food web may alter energy mobilization to and thebiomass of microzooplankton grazers. (C) 2017 Elsevier Ltd. All rights reserved.

  • 4.
    Roos Lundström, Frida
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    Mårtensson, Anna
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    The Journey of Plastic trough Oceans: A study on quantifying micro plastic particles in ocean outside Costa Rican west coast2015Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Since 1950, the plastic production has increased radically from 1.5 to 280 million tons in 2012. The increased production of plastic has led to oceans becoming more polluted than ever. Micro plastic particles originate from large floating plastic debris by undergoing degradation caused by UV-radiation. Due to their small size, density and colour micro plastic particles resemble marine organisms’ natural prey and are therefore ingested. This report discuss the hypotheses that there are micro plastic particles present in oceans outside of the Costa Rican west coast (hypothesis 1), that the location between the South and North Pacific gyres will result in an accumulation of plastic (hypothesis 2) and that different sampling methods will generate different types of data which makes it difficult to compare results (hypothesis 3). A manta trawl was used to collect samples in size range 1-2mm and they were quantified with a microscope. To simplifying transportation and storing, aluminum foil was used instead of glass jars to collect samples. Thereby the need of transferring material from a glass jar to a flat surface for quantifying with microscope was eliminated. One area contained 56.5 % of all gathered particles together. The result also showed that micro plastic particles are present even in protected areas.

  • 5.
    Waara, Sylvia
    et al.
    School for Sustainable Development of Society and Technology, Mälardalen University, Västerås, Sweden.
    Waara, Karl-Otto
    School for Sustainable Development of Society and Technology, Mälardalen University, Västerås, Sweden.
    Forsberg, Åke
    School for Sustainable Development of Society and Technology, Mälardalen University, Västerås, Sweden.
    Fridolfsson, Magnus
    Tekniska förvaltningen, Örebro Kommun, Atleverket, Örebro, Sweden.
    Performance of a Constructed Wetland System for Treatment of Landfill Leachate2008Ingår i: Proceedings Waste 2008: Waste and Resource Management – a Shared Responsibility / [ed] Marie Townshend, Stanton-on-the-Wolds: Waste Conference Ltd. , 2008, s. 655-667Konferensbidrag (Refereegranskat)
    Abstract [en]

    The performance of a constructed wetland for treatment of landfill leachate has been evaluated based upon data obtained during 4 years (2003-2006). It consists of a series of 10 ponds with a total capacity of 52.000 m3 covering 8 ha. Using univariate and multivariate statistics (PCA) the reduction pattern of a large number of chemical parameters including heavy metals has been investigated in 3 parts of the wetland with equal volume. Analyses show that many parameters are removed to the greatest extent in the first part of the system (e.g. many heavy metals, total suspended solids) or the second part of the system (N-NH4) while other parameters such as total nitrogen are more gradually reduced (10 ton/year removed).  Toxicity testing with 5 bioassays showed that toxicity was sometimes observed at the inlet but no toxicity was observed at the outlet for 4 of the test species. The data presented will be used for optimizing the treatment process as well as to improve the monitoring program.

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