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217 Uppsatser om Lake graves - Sida 15 av 15

Reintroduction of the noble crayfish in the lake Bornsjön

Flodkräftan är en inhemsk art i Sverige. Antalet flodkräftlokaler har under 1900-talet reducerats med över 97 procent, i huvudsak till följd av kräftpest. Flodkräftan är klassad som starkt hotad i den nationella rödlistan för hotade djurarter sedan 2005. Kräftpesten kom troligen till Europa i samband med introduktion av en nordamerikansk kräftart i Italien 1860. I dagsläget sprids kräftpest genom illegala utsättningar av den nordamerikanska signalkräftan som lagligt började introducerades i Sverige under slutet av 1960-talet.

Commercial thinning and its potential for contribution to the timber supply in British Columbia?s Interior forests : a look at Finnish and Swedish forest practices and their applicability in British Columbia?s Interior forests

Thinning is the partial removal of trees in a forest stand prior to final harvest. The term can be divided in pre-commercial thinning where little if any volume is removed from the stand and commercial thinning where removals are intended to provide a positive economic result. From a silvicultural point of view, the goal of thinning is to enhance future crop tree quality by removing low-quality stems and providing sufficient space for the accelerated development of retained ones (Huuskonen & Hynynen, 2006). The goals of this study was to see if commercial thinning could positively affect the short and medium term timber supply (MTTS) in the Interior regions of British Columbia (BC), and whether or not Scandinavian forestry practices could be adopted in the BC context. The mountain pine beetle (Dendroctonus ponderosae Hopkins) has created significant forest planning problems in BC. The annual allowable cut (AAC) was raised to capture beetle-killed timber while still merchantable.

Alternativa tillsatser för stabiliseringsmedlen di- och trifosfat E450/E451 i Kronfågels produkt Salladskyckling

Det har förekommit en debatt i bland annat media de senaste åren om tillsatser och dess nytta eller risk inom livsmedelsindustrin. Det finns även undersökningar på att konsumenterna inte längre önskar tillsatser i livsmedlen. Därför har det på många företag inom livsmedelsbranschen påbörjats ett arbete för att se över de tillsatser som används och väga för och nackdelar mot varandra.Detta examensarbete är en del av ett sådant projekt som utförs på Lantmännen Food R&D tillsammans med Lantmännen Kronfågel. Kronfågel använder ett stabiliseringsämne i en av sina produkter, Salladskyckling, och detta examensarbete undersöker om denna kan tas bort eller bytas ut mot ett naturligt alternativ. Stabiliseringsämnet som används är difosfat (E 450) och trifosfat (E451) och har som uppgift att binda vatten i köttet.

Rydboholms engelska park : historik och vårdprogram

The estate of Rydboholm is situated in the municipality of Österåker, north of Stockholm, Sweden, and has a long history dating back to the 14th century. Rydboholm was the home of several families of great national importance, such as the Finsta and Vasa clans. However, since the 1500s, the noble family Brahe was the most influential; leaving its mark on the castle and surroundings. The gardens of Rydboholm consist of two parts; The first is from the baroque era, dating back to the 1660s, and the second is an immense landscape park completed around the year 1800 by Magnus Fredrik Brahe. During his travels through Europe, Magnus Fredrik Brahe was influenced by the new English-style gardens and he brought a large collection of literature on the subject back to Sweden, still kept in the library of Rydboholm.

New Orleans efter orkankatastrofen 2005 : Påverkan av naturförutsättningarna på socioekonomiska strukturen i regionen New Orleans

The aim and purpose with this essay is to identify the natural conditions of the New Orleans City region, and to establish an understanding of the disastrous event of Hurricane Katrina in August 2005. Who lived in this area and how did this event affect the outcome of the disaster?The theory is based on two Swedish human geographers Torsten Hägerstrand and Thomas Lundén, and their theories on regional geography and political geography, also regarded as ?geopolitics?. Regional and Political Geography are explained as the relation between state and territory, power over the territory and the variables that affect the relations on different levels such as; economy, culture, technology, demography and communication.The author decided to use the quantitative method in the process of research, the essay underwent an overall analyzes of the media settings, articles, written literature and documentaries. The author has been very critical to the material and data that was presented by the American authorities, media and non governmental organisations.New Orleans City?s topography is unique in the matter that the city is constructed on a delta area, the Mississippi River, Missouri and Ohio River systems are all connected in New Orleans.

Att restaurera forna tiders beståndsstruktur : ett exempel från Jämtgaveln

In Sweden today so-called "prescribed nature conservation burning" is performed due to the change in silvicultural law, certification and an increased knowledge regarding the field of fire in the forest landscape. The aim is to re-create structures and qualities made by the fire regimes of the past, though on a much smaller geographical scale. The structures and qualities to be re-created are for example broad leaf stands, trees with large diameter, heterogeneous stands regarding variables such as age and diameter. If we increase our knowledge of the constitution of forests characterized by fire, then we will be able to set goals for what achievements to reach both on landscape scale and stand scale. The aim of this paper is to try to describe how a stand from the past was composed regarding mainly the spatial arrangement and compare it with the stand of today in the same place. This to be done by using relict material, that is stumps and dead standing trees.

Ulleråker sjukhus : trädgård och park : vårdprogram

In the middle of the 19th century came an opposite reaction against the hospitals? treatment of their patients and a more human way was requested. A link between crowded housing, bad hygien and other bad conditions had been noticed and nature was considered to be healthy. Hospitals and sanatiories moved closer to nature due to influences from England, USA and Germany, and cities began building public parks. Employment was seen as calming and healthy for the patients.

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