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1354 Uppsatser om Population decline - Sida 1 av 91

Grey-sided vole and bank vole abundance in old-growth forest patches of different size and connectivity

Vole populations in northern Scandinavia vary in cycles with peaks every third or fourth year as described by the National Environmental Monitoring Programme of small mammals (NEMP). Some vole species have declined in population numbers since the NEMP started in 1971, especially the grey-sided vole (Myodes rufocanus) which is nearly extinct in the forested region. Since small mammals are an important food source for several avian and mammalian predators, the decline in vole numbers is expected to have consequences for the whole food chain, especially if other vole species start to decline in numbers. This study tried to test the hypothesis that presence and abundance of M. rufocanus (a specialist species) and Myodes glareolus (a generalist species) can be predicted by patch size and connectivity of forest patches >60 years old with a minimum of 15% pine >100years old.

Rådjur (Capreolus Capreolus) på Gotland : populationsutveckling och spridningsmönster

Gotland is an island in the Baltic Sea where man has introduced roe deer. The last successful reintroduction was in the 1980s and is the base of the viable roe deer population of today.The aim of this study was to estimate the roe deer population density in 2012 and the species population dynamic since the time when studies on the population started. The result indicates a population size of 850 roe deer in 2012. There was no significant population dynamic, which may be due to insufficient data. The population occurs basically over the whole island but have not yet been established in all suitable areas.

Den finansiella nedgångens påverkan för politikers aktivitet : En studie av LiV

Essay in political science, C-level, by Ronak Bozorgi, fall semester 2007. Tutor:P.O. Norell. ?The affect of financial decline on politician?s activity.

Effekter av predationsrisk på sånglärkors (Alauda arvensis) habitatval på åkermark

Along with other European farmland birds, the skylark (Alauda arvensis) has declined rapidly since the 1970?s. Between 1975 and 2003, the Swedish population of skylarks declined with 64 %. In Britain, the decline is often explained by alterations in farming practices in general and the shift from spring-sown to winter-sown cereals in particular. The dense vegetation structure of winter cereals is limiting the number of breeding attempts possible, causing the entire population to decline.

SIDAs Watergate : En ide?historisk undersö?kning av debatten om svenskt bistånd till det indiska befolkningsprojektet 1977?1980

In 1975 the Indian president Indira Gandhi proclaimed the emergency period which would go on until 1977. Under this time approximately 8 million men and women were sterilized in the name of family planning. Many of them did not volunteer. This was not just an Indian con- cern because the family planning program was largely funded by international aid. The Swe- dish involvement in the program was debated 1977?1980, in what has been called ?SIDA?s Watergate?.

Älgexplosionen på 70- och 80-talet, ett hot mot sågverket?

The background of this study is an article in the hunting magazine ?Svensk Jakt? where Karl Hedin claims that his sawmills has not noticed any significant moose damages in the timber. The purpose with the study is to find out the causes to the moose explosion and what it has led to in today?s forests. A questionnaire has been sent out to sawmills in the region Dalarna with the purpose of finding out if sawmills receive moose-damaged timber and what they think about how they foresee future development. There were two causes of the moose explosion, that had effects on the moose population. The first cause was that the moose hunters wanted to raise the moose population, and by raising the calf shooting and by saving the cows they succeeded. The second cause was changing methods in Swedish forestry.

Älgexplosionen på 70- och 80-talet, ett hot mot sågverken?

The background of this study is an article in the hunting magazine ?Svensk Jakt? where Karl Hedin claims that his sawmills has not noticed any significant moose damages in the timber. The purpose with the study is to find out the causes to the moose explosion and what it has led to in today?s forests. A questionnaire has been sent out to sawmills in the region Dalarna with the purpose of finding out if sawmills receive moose-damaged timber and what they think about how they foresee future development. There were two causes of the moose explosion, that had effects on the moose population. The first cause was that the moose hunters wanted to raise the moose population, and by raising the calf shooting and by saving the cows they succeeded. The second cause was changing methods in Swedish forestry.

Kejsarsnitt på nötkreatur : indikation, frekvens och utförande

The background of this study is an article in the hunting magazine ?Svensk Jakt? where Karl Hedin claims that his sawmills has not noticed any significant moose damages in the timber. The purpose with the study is to find out the causes to the moose explosion and what it has led to in today?s forests. A questionnaire has been sent out to sawmills in the region Dalarna with the purpose of finding out if sawmills receive moose-damaged timber and what they think about how they foresee future development. There were two causes of the moose explosion, that had effects on the moose population. The first cause was that the moose hunters wanted to raise the moose population, and by raising the calf shooting and by saving the cows they succeeded. The second cause was changing methods in Swedish forestry.

Status och hotbild för den oceaniska laven broktagel Bryoria bicolor i sydvästsverige :

Horse-hair lichen Bryoria bicolor is a red-listed lichen species in the category Vulnerable. It is an oceanic lichen and it is often found on boulders and cliffs in a semi-open environment with a high humidity in the agricultural landscape. The species can also be found as an epiphyte on trees, mostly in boreal forests in the provinces of Dalarna, Härjedalen and Jämtland. In the agricultural landscape, there has been indications on that B. bicolor show a decline, and this studie aimed at examining the extent and causes of this decline.

Ett Imperium På Nedgång?: En studie av USA: s Imperium

This is a thesis about the American empire. I also focus my work to see if this American empire is declining. The two main questions I ask and want to answer in this thesis are: is America an empire and is it in decline?I first conclude that America has been an empire ever since the end of the Second World War. The sheer military and economic power of the American empire matches and exceeds the ones before them.

Destinationsutveckling under politisk kris : En fallstudie om Tunisien 2011

The authors have during the spring semester 2011 studied the subject destination development during a political crisis, focusing on Tunisia. At the beginning of 2011 the country was in an uncertain political situation when the revolution of the Tunisian people occurred. This created massive demonstrations on the streets, and resulted in the current government's resignation. More effects of the revolution has been seen in a drastic decline of inbound tourists in the country, which in turn affected the country's population and economy. From this point on Tunisia as a destination needs to recover to once again become attractive to tourists.

Hundfoder mot hjärnans åldrande ? kan det fungera?

Due to better nutrition, veterinary and overall care, pet dogs? lifespan has increased. With more old dogs we see more health problems associated with age, among those cognitive decline, leading to deficits in learning and memory, disorientation, anxiety and other altered behaviors. Cognitive decline can have severe negative impacts on the life of both dog and owner, when the dog for example forgets being housetrained or starts being awake at night. Two pet food manufacturers have developed food with specific ingredients in order to improve cognitive functions or delay the onset of cognitive impairment. Hill?s Pet Nutrition has developed a dog food with supplements of a broad spectrum of antioxidants and mitochondrial nutrients, aiming to diminish oxidative damage in the brain, thereby maintaining brain function and improving learning ability.

Population and management models for the Swedish wild boar (Sus scrofa)

The wild boar Sus scrofa population in Sweden has increased rapidly in the last decades which has led to conflicts among stakeholders, for example due to crop damages in agriculture. Thus, there is an urgent need of quantified goals and effective strategies for wild boar management. To develop such strategies, knowledge on population dynamics is fundamental. In this study a deterministic matrix model was used to estimate population growth, based on previously published data. The exponential growth rate for a wild boar population was calculated to 1.48.

Kritikens plats på Dagens Nyheters kultursidor 1997 och 2007

This study examines the state of criticism in the arts section of Sweden?s largest newspaper Dagens Nyheter. The study stems from raised concerns about the failing position of arts criticism, dubbed ?the crisis of criticism?. Through an overview it compares the arts section of February 1997 to the arts section of 2007.

Do Dividends Pay Dividends

The main intention with this thesis is to investigate the relationship between dividends and investments. We hypothesize that firms may be forced to cut back on investments if dividends are not curtailed in times of poor annual earnings. According to contemporary theories, we argue that firms may be reluctant to cut back on dividends even when annual earnings decline and the level of investments will consequently be determined by the financial mobility of companies. The survey is carried out by means of a quantitative analysis, which includes all firms quoted on the exchange of Stockholm from 1980 through 2000. On the contrary of previous research, we conclude that even firms with high dividends can be forced to curtail investments if payouts to shareholders are maintained or increased when companies are faced with a decline in annual earnings..

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