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483 Uppsatser om Practices - Sida 33 av 33
Frigörelse av kvicksilver och metylkvicksilver till bäckvatten under olika perioder efter skogsavverkning :
High levels of Hg in fish in Swedish lakes have been a problem along time in Sweden. The major concern is production and accumulation of the most toxic form of mercury; methyl mercury (MeHg). Consequently, in about half of our 83 000 lakes fish contain concentrations above the recommended limit for human consumption of 0,5 mg mercury per kg fresh weight (most of it in the form of MeHg). Consumption of fish containing too high levels of MeHg may cause problems for both humans and animals.
Three major sources of MeHg in surface waters are: 1) runoff from terrestrial areas, 2) deposition from the atmosphere, and 3) internal production of MeHg in lakes and streams. The aim of this study was to investigate the effect of clear-cutting on the concentration of Hg and MeHg into draining streams.
Älgbete och skogsskador på beståndsnivå :
The modern silvicultural Practices of today, with cutting by compartments, have led to a large benefit for the moose population through the cleared areas which produces large amount of fodder. This new landscape can produce and feed a large moose population. But it will cause a conflict effect towards the landowners; the conflict consists of browsing mainly in the young pine forest. The result from browsing and damage will be sparse stands with reduced growth and technical damage like leader shoot browsing, stem breaking and damage of the bark. Technical damage can kill the tree or damage it so hard that it would not work as future saw timber.
English Arts and Crafts gardens and how they can be modernised in Sweden
The aim with this thesis was to investigate what characterises an English
Arts and Crafts garden how they could be modernised in Sweden. My
research was limited to 20 weeks of full-time writing and worth 30 ECTS.
Through literature studies, interviews and site visits I could analyse my
findings which resulted in a concrete garden design project.
The Arts and Crafts was a movement that started in England during the
1880?s and evolved as a reaction towards the industrialisation. The influence
came from the writings and Practices of John Ruskin (1819-1900)
and William Morris (1834-1896) who advocated the importance of craftsmanship.
The Arts and Crafts movement also became a ?recipe for life?
and was associated with a healthy and morally pure way of living.