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The long-term carbon storage capacity of the boreal forest is under threat from the increasing frequency and intensity of wildfires. In addition to the direct carbon emissions during a fire, the burnt forest often turns into a net carbon emitter after fire, leading to large additional losses of carbon over several years. Understanding how quickly forests recover after a fire is therefore vital to

Climate change and land-use change represent a dual threat to terrestrial ecosystem functioning. In the tropics, forest conversion to agriculture is occurring alongside warming and more pronounced periods of drought. Rainfall after drought induces enormous dynamics in microbial growth (potential soil carbon storage) and respiration (determining carbon loss), affecting the ecosystem carbon budget.

Boreal forests have a large impact on the global greenhouse gas balance and their soils constitute an important carbon (C) reservoir. Mature boreal forests are typically a net CO2 sink, but there are also examples of boreal forests that are persistent CO2 sources. The reasons remain often unknown, presumably due to a lack of understanding of how biotic and abiotic drivers interact to determine the

Study Region 103 FLUXNET2015 flux towers distributed across diverse climatic and ecological regions. Study Focus Accurate estimation of evapotranspiration (ET) is critical for understanding regional ecohydrological processes. Physically based models such as the Penman-Monteith-Leuning (PML) model are robust but often constrained by fixed parameterization schemes, while data-driven approaches such

Hur många roller ska skogen ta sig an? Skogen kan ta an många olika roller. Den kan vara en vacker vandringsmiljö. Kanske ett förvaringsutrymme för koldioxid? Eller till och med en viktig källa för bioenergi. Skogens förmåga att bidra med flera funktioner är fantastiskt men precis som andra naturresurser är förrådet begränsad. Dessutom är skogen en central del i klimatarbetet där dess funktion soThe land use, land-use change, and forestry sector (LULUCF) has historically been rather unregulated. Recent political developments have put pressure on countries to implement practices that increase net greenhouse gas (GHG) removals and improve the state of carbon sinks. One of these political developments is the European Union’s (EU) LULUCF Regulation, which as of now obligates Member States (MS

Old-growth forests uniquely support biodiversity while serving as some of the planet's most important carbon stocks. The influence of tree and stand age on carbon flux dynamics remains debated—an urgent question as climate-driven disturbances may reshape forest age structures and in situ carbon storage. To clarify these relationships in Fagus sylvatica , systems, we examined a unique dataset of 3,

Accurate evapotranspiration (ET) data are required for many hydro-meteorological applications. Compared with the traditional evaluation that requires in-situ measurements, the triple collocation (TC) technique estimates geophysical product errors without the need for ground truth, which is especially suitable over large areas lacking a dense in-situ network. However, violations of the zero-error c

Climate warming could destabilise the Earth's largest terrestrial store of reactive carbon (C), by accelerating the decomposition of soil organic matter. A third of that C store resides in the tropics. The potential for tropical soils to sequester C, or to act as an additional source of CO2, will depend on the balance of C inputs and outputs, mediated by the response of soil microbial communities

The influence of climate on soil microorganisms governs the input and output fluxes of carbon (C) from soils. The study of the drastic responses to drying-rewetting offers an opportunity to assess an aspect of ‘soil health’ via evaluating the role of microbes in soil biochemistry and C cycling. Recent evidence has consistently shown that communities exposed to extreme moisture fluctuations recurre

Insect herbivory is one of the most important ecological processes affecting plant–soil feedbacks and overall forest ecosystem health. In this study, we assess how elevated carbon dioxide (eCO2) impacts (i) leaf level insect herbivory and (ii) the stand-level herbivore-mediated transfer of carbon (C) and nitrogen (N) from the canopy to the ground in a natural mature oak temperate forest community

The present thesis explores how the tourist experience is re-articulated through the mediation of smartphones. I adopt the postphenomenological theory of mediation as the overarching ontological position, placing the role of technologies on an ontological level, as mediators of perception and experience. The new tourist that emerges from smartphone mediation is the smartphoned tourist, that is a t

The Eurasian spruce bark beetle, Ips typographus, is a major pest, capable of killing spruce forests during large population outbreaks. Recorded dispersal distances of individual beetles are typically within hundreds of meters or a few kilometers. However, the connectivity between populations at larger distances and longer time spans and how this is affected by the habitat is less studied, despite

Problem: Medierna är en viktig faktor i formandet av vår världsbild. Trots den nya kommunikationsteknologins framväxt är traditionella medier såsom press, radio och TV fortfarande den huvudsakliga källan till information för oss medborgare. Det är den av journalister skapade bilden av verkligheten, snarare än verkligheten själv som sedan ligger till grund för våra handlingar. Det är därför viktigt

Genom Europakonventionen och regeringsformen tillförsäkras den enskilde ett flertal rättigheter. Varje medborgare åtnjuter bland annat skydd till frihet och personlig säkerhet samt till privat och familjeliv, sitt hem och sin korrespondens. Dessa friheter får begränsas genom lag under förutsättning att begränsningen tillgodoser ändamål som är godtagbara i ett demokratiskt samhälle. Att utreda brotThe Convention for the Protection of Human Rights and Fundamental Freedoms (ECHR) and the Swedish constitution guarantee everyone a number of civil rights. Every citizen has the right to respect for his private and family life, his home and his correspondence. These rights may be limited by law, presumed that these limitations have a righteous purpose in a democratic society. Investigating crimes

Sammanfattning Svensk polis saknade länge ett uttalat lagstöd för rätten att använda våld. De gavs i äldre lagstiftning en befogenhet att bruka nödvändigt våld för att avvärja ett livsfarligt angrepp på sig själv eller någon annan. Däremot förelåg dem ingen rätt att vid ett ingripande ta till våld. Svensk polis ska alltid försöka hitta andra utvägar än våld för att lösa en uppgift inom ramen för Summary Swedish police lacked for a long period of time an explicit legal basis for the right to use force. They were in an older legislative powered to operate necessary force to repel a life threatening situation on himself or anyone else. However, the police had no given right to take on violence due to an intervention. Swedish police should always try to find other ways than violence to solve

Värdering av obebyggd tomtmark för småhus kan ibland vara svårt då det saknas ett bra ortsprismaterial. Ännu svårare är att värdera tomtmark för småhus som är bebyggda med byggnader på ofri grund. Tomtmark med byggnader på ofri grund upplåtna med nyttjanderätter anses ha ett lägre värde än tomtmark som är obebyggd eller tomtmark som är bebyggd av fastighetens ägare. Det beror på att nyttjanderätteThe objective of this work is to examine the impact on value that a house on leasehold has on the underlying land in a partition ordinance. In order to build a foundation and create an understanding about houses on leasehold, partitiontools and different methods of valuation I undertook literature studies. The literature consisted of, among other things, preparatory work for FBL and the Court of A

Aktiebolaget är en mycket framgångsrik företagsform för storskaliga och riskfyllda projekt. En egenskap som anses betydelsefull för denna egenskap är aktiebolagets vinstsyfte. Idag finns aktiebolag som ekonomiskt och i fråga om politiskt inflytane kan mäta sig med stater. Detta innebär att de kan ha stor påveran exempelvis på människors tillgång till mänskliga rättigheter. I denna kontext uppmanasThe limited liability company is a form of business associaton that has advantages that makes it attractive for large and risky business entreprises. One characteristic that is viewed as importand for this quality is that the business purpose is increased shareholder value. Today, limited liability companies exists that rival nation states on scale and political impact. As a consequence they can a

För att uppnå nationella klimat- och miljömål måste den förnybara elproduktionen i Sverige öka inom de närmaste decennierna. Det svenska elcertifikatsystemet är ett marknadsbaserat finansiellt stödsystem med målet att skapa incitament till en ökad förnybar elproduktion. Uppsatsen syftar till att förmedla en överblick av elcertifikatsystemet som är reglerat genom lagen (2011:1200) om elcertifikat. In order to achieve the national climate and environmental objectives, the renewable energy production in Sweden must increase within the next few decades. The Swedish green certificate system (Sw: elcertifikatsystemet) is a market-based financial support system aimed at creating incentives for increased renewable energy production. The purpose of this thesis is to present an overview of the elect

Varje stjärna vi ser på himlavalvet en stjärnklar natt tillhör vår galax Vintergatan, och var och en har de en historia att berätta. Målet med astronomi, den äldsta grenen av naturvetenskapen, är att förstå hur dessa magnifika strukturer uppstod och formades till den skepnad de antar i dag. Stjärnor bildas ur enorma gasmoln, och vid slutet av sin livstid slungar de ut sina beståndsdelar i galaxen.Metal-poor (MP) stars in the Milky Way (the Galaxy) and its satellite galaxies open a window into the earliest times in the history of the Universe, probing the chemistry of the earliest times. Recent galaxy formation simulations predict that the oldest MP stars are those on tightly bound orbits in the inner regions of a galaxy (Tumlinson 2010). Applying this to the Milky Way, MP stars in the bulg