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301 Uppsatser om Fish farming - Sida 10 av 21
Stridsyxor eller båtyxor : En diskussion om symboliken och dess betydelse
My intention with this paper is to try to understand the meaning of the double sex symbols which can be identified on a number of Neolithic so called battle axes from the region round the lake Mälaren in Sweden. My conclusions are drawn after having studied a number of archaeological thesises. I have realized that the society was egalitarian from what is said about the funeral habits since women and men were buried with the same care. Ceramics from the Skogsmossen site show a very long continuity over 15-20 generations. These facts indicate a peaceful society without traumatic breaks where knowledge would have been lost.
Möjligheter för naturturism i Borgsjö
Increased interest in nature tourism may be what saves small and dying villages, like Borgsjo? in the county of Va?sterbotten in northern Sweden, from disappearing. The nearly untouched nature in these areas is in many cases an unused resource, since true wildlife experiences are sought by many travelers. The purpose with this report is to investigate if Borgsjo? has the potential and abilities to become a destination for nature tourists, and how this should be done to avoid negative effects on nature, wildlife and culture.
Predation av sandräka (Crangon crangon) på juvenil piggvar (Psetta maxima) och juvenol skrubbskädda (Platichtys flesus) : betydelse av yngelstorlek för överlevnad hos piggvar och skrubbskädda efter bottenfällning
Turbot (Psetta maxima) and flounder (Platichthys flesus) are two species of flatfish both having their nursery areas around the shores of Gotland in the Baltic Sea. The common brown shrimp (Crangon crangon) is a known predator on newly settled plaice (Pleuronectes platessa) in the North Sea area and is also found in the Baltic Sea. Experiments were carried out to see if the brown shrimp is predating on juvenile turbot and flounder, and if so on which sizes, and if the brown shrimp prefers any of the flatfish species, and also to see if there is a difference between day and night in density of the shrimp, i.e. when the fish might be subjected to predation. The results showed that predation decreased with size for both turbot and flounder.
Från soptipp till naturreservat : En studie av makt i Lövsta-Kyrkhamn-Riddersvik genom actor-network theory
This paper investigates, through an actor-network theory perspective, how the recreation area Lo?vsta-Kyrkhamn-Riddersvik northwest of Stockholm has developed from being a dumping site into becoming a nature reserve. This investigation also tries to describe and explain which values that have been promoted in the area by the local voluntary associations and companies. Lo?vsta-Kyrkhamn-Riddersvik has been inhabited for more than 3000 years, originally with farming as the most important business.
Hur bedöms vallens avkastning?
Grassland is a great part of Swedish agriculture and there is a demand of what the grassland yield is in practice. To be able to control the economic of the milkproduction it is important for the farmer to know how big quantities of pasture there is to use during the year.The work is based on interviews of 22 farmers from southern part of Sweden. Their area of grassland fluctuate between 16 up to 360 hectares. The questionnaire content 32 questions.The most common way to weight the green plant material is to drive over a scale, and to measure the dry extract with your own gauge. It takes in average two minutes toweight one load of green plant material.
INDUSTRIELLT EKOLOGISK STADSODLING : EN KVALITATIV STUDIE SOM UNDERLAG FÖR EN STADSODLINGSREVOLUTION I STOCKHOLM
Rooted in Industrial Ecology (IE) theory, this report evaluates how urban agricultural concepts and techniques, can contribute to improved ecological sustainability within the inner city boundaries of Stockholm. An overarching literary study as well as an interview was carried out, resulting in a qualitative analysis followed by suggestions for practical implementations. A substantial convergence was found between the eco-restructuring objectives of IE and the principal motives for urban agriculture. Consequently, eco-restructuring objectives are found in varying degrees in the presented urban agricultural techniques. Industrial symbioses, permaculture and combinations of urban agricultural techniques are tools which are capable of corresponding adequately to the diversity of urban settings.
Ekologiskt uppfödda kycklingar : en jämförelse mellan två olika foder
Organic rearing of broilers is not a large production in Sweden. In order to create a sustainable yet efficient production of organically produced poultry meat, at a price that the consumers are willing to pay, much more knowledge is needed. It is therefore important to do more research on organic broilers under Swedish conditions. This report is aimed to be a base for further studies.
In the study 2000 broilers of the hybrid Ross 308 divided in to two equal groups. The broiler hybrids that are used in Sweden are selected for a high growth rate and are normally slaughtered at the age of 5 to 6 weeks, with a slaughter weight of 1.7-2 kg.
Analys av fiskerättsförhållandena i Stockholms skärgård i relation till känsliga områden samt fysisk störning
This work is a GIS study of fishing rights distribution between different categories of ownersand properties in the Stockholm Archipelago. The purpose was to create basic data used toestablish fishing laws and restrictions within the Stockholm County.Stockholm?s archipelago consists of a unique environment and is the natural life andreproduction environment for ? of Sweden?s reproducing fish species. The increasingpressure from fishing, tourism and weekend population increases the need for an efficientfishing administration to prevent impoverishment and to ensure the biological diversity inSwedish fishing waters. There is an increasing need to review fishing administrationmethodologies, as well as studying the categories of ownership and properties located insensitive areas and areas influenced by physical disturbances in order to establish effectivelaws and restrictions.The Swedish fishing rights for an area are currently not connected to the ownership of theproperty to which it belongs.
Med andras ögon : En intervjustudie av åsikter och värderingar om effekter och produkter av det svenska jordbruket
The majority of the Swedish population were self-provided within agriculture a hundred years ago. Times do change and today the situation is the other way around - most of us live within city boundaries and only few work with farming and related agricultural businesses. One thing that has not changed though, is the need of supplies from Swedish agriculture.What do we think of those products? Are we even aware of the connection between us and agriculture? The Federation of Swedish Farmers, LRF (Lantbrukarnas riksförbund), started their project to strengthen the link between consumers and producers in 2008.This paper is part of the project and its aim is to investigate consumers' views and values upon the effects and products from Swedish agriculture.Opinions and values have been studied through interviews influenced by phenomenology. The results show that the informants in general had a positive approach and thinking concerning the products and effects from Swedish agriculture.
Tungmetaller i metabolismen hos värphöns och slaktkycklingar
Mussel meal is a potential source of protein, with a good composition of amino acids, for laying hens and broiler chickens, and may replace the use of fish meal in organic poultry production. Lead and cadmium are heavy metals which occur in the environment and can be accumulated in mussels. When poultry are exposed to heavy metals, the metals are absorbed in the small intestine and distributed in the body in the form of ions, complexes or bound to proteins. In poultry, lead accumulates in bone tissue, liver and kidneys, while cadmium accumulates in liver and kidneys. Generally very low concentrations of these heavy metals occur in muscles of broilers which have been exposed to feed contaminated with cadmium or lead.
Import av entreprenad- & lantbruksmaskiner :
I made this examination essay to investigate the possibilities and problems with machinery import. The rules intend to loaders and agriculture machines are still pretty flexible. It is today rather simple to make a registration or inspect those machines.
There are still some practical problems to be aware of.
It is very important to have the right contacts abroad, it is not always that you have time or moment to inspect the machines before purchase.
In that case you have to trust your contact or partner about condition, equipment or working hours of the machine. Another important thing is payment before delivery:
There is a huge risk that you do not get the machines that you paid for.
If problems come up, you need to know the laws, your rights and your duties.
A Swedish company does not pay any value-added taxes when it buys from another member of the European union. On the other hand must the machine be sold included value-added tax, if the buyer is a Swedish company.
Can the small-scale cooperatives in Serbiabe successful organic producers?
This thesis is part of the evaluation of a development project in Serbia, where cooperativeshave been formed in order to make the members support themselves trough organic farming.The purpose of the paper has been to find out if the goal of making the current members andpotential new members able to support themselves on what the cooperatives produce, hasbeen reached. The goal is to be considered as partly fulfilled; according to the last annualreport from Odraz, ?the registered cooperatives have become fully functional and stable andthey have started making some modest profit.???the majority of the beneficiaries think thatthey are self-reliant??. In order to find out what is required in order to fulfil the establishedgoal entirely, (for example there are no reports of that new members have been recruited, andthe fact that most, not all, current members of the cooperatives (the beneficiaries) say thatthey are supplied from what the cooperatives produce), I have tried to identify the conditionswhich the cooperatives operate under. The basis of the paper consists of a literature review,interviews with the directors of the cooperatives, a questionnaire dealing with the businessenvironment and various external sources in Serbia..
Betydelsen av återskapade våtmarkers ålder, area och fiskförekomst för simfåglar : En biologistudie ur ett lärarperspektiv
Återskapade våtmarker är av stor vikt för den biologiska mångfalden och särskilt viktiga för hotade simfåglar. För att öka kunskapen kring hur faktorer som våtmarkers area, ålder och fiskförekomst påverkar simfåglar i återskapade våtmarker studerades fyra våtmarker i Tinnerö naturreservat, Linköpings kommun. Av speciellt intresse var svarthakedoppingen (Podiceps auritus). Antalet svarthakedoppingar i de studerade våtmarkerna hade en positiv utveckling under våtmarkernas första år. Dock minskade antalet svarthakedoppingar i området mellan år 2009 och 2011.
Flottledsåterställning i norra Sverige: : effekter på habitatkvalitet och populationstätheter av juvenil öringar (Salmo trutta L.)
In an effort to evaluate the effects of restorations of float ways on population density of stream dwelling fish in relation to the changes in habitat, I studied the physical habitat restored and channalized sites and their population density of brown trout (Salmo trutta L.) in three streams in the municipality of Sorsele.
The differences between the channalized and the restored sites where most noticeable regarding substrate which where generally coarser in the restored sites. The analyses showed that the proportion of habitat that where suitable to the age class 0+ where significantly lower in the restored sites compared to the channalized sites. Regarding age class ?2+, no statistical differences in habitat quality were found.
Lean i den fysiska planeringsprocessen : ?It?s not about finding the big fish, but fishing all the time?
Den svenska planprocessens effektivitet är ett problematiskt och omdiskuterat ämne. Uppsatsen behandlar effektivisering av den fysiska planeringsprocessen med leanteoretiska begrepp som utgångspunkt. På senare tid har flera alternativa lösningar för effektivisering uppkommit. En av dessa lösningar är lean, en verksamhetsstrategi med ursprung från Toyotas produktionsfilosofi. Uppsatsen utgår ifrån en kvalitativ forskningsmetod med målet att genom intervjuer, offentliga rapporter och litteratur granska den svenska planeringsprocessen och fenomenet lean inom fysisk planering.