Sökning: "Lake Vättern"
Visar resultat 6 - 10 av 10 avhandlingar innehållade orden Lake Vättern.
6. The influence by point sources on carbon, nitrogen and metals in two sedimentary environments
Sammanfattning : Sediments in two aquatic environments have been investigated. Both are anthropogenically affected and polluted. The focus has been on stable carbon and nitrogen isotopes, C/N ratios, and heavy metals. The first site is Höggarnsfjärden Bay in the inner parts of the Stockholm Archipelago, Sweden, where a garbage dump releases treated leach water. LÄS MER
7. Ultra-short-chain perfluoroalkyl acids : Environmental occurrence, sources and distribution
Sammanfattning : Ultra-short-chain perfluoroalkyl acids (PFAAs) is a group of highly fluorinated and very stable chemicals. Their small molecular structure in combination with the acidic functional group result in highly polar compounds and concern has been raised as these substances may threaten our drinking water supplies. LÄS MER
8. Environmental Monitoring of Refuse Dump Leachate Toxicity in Fish
Sammanfattning : The global economy is driven by the consumption of goods and materials. Used products are often deposited on refuse dumps, making them potential point sources for all man-made chemicals. Water soaking through landfill waste results in a wastewater termed leachate. LÄS MER
9. Det rituella landskapet : Kosmografiska uttrycksformer och territoriell struktur
Sammanfattning : Symbolic landscapes have now for some time been discussed in various disciplines. They have been interpreted as the result of culturalactivities, often connected with territoriality and religious or political ambitions and in particular steered by human desire to leave animprint of power and control. LÄS MER
10. Community Robustness Analysis : Theoretical Approaches to Identifying Keystone Structures in Ecological Communities
Sammanfattning : Most of the world’s ecosystems suffer from stress caused by human activities such as habitat destruction, fragmentation, overexploitation of species and climate change. These factors affect the reproduction and/or survival of individual species as well as interactions between species in ecological communities. LÄS MER