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Browsing by master's degree program "Ympäristömuutoksen ja globaalin kestävyyden maisteriohjelma (ECGS)"

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  • Impacts of controlled redox conditions on greenhouse gas dynamics from peat 
    Marttunen, Sofia (2024)
    Peatlands are a significant carbon and nitrogen reservoirs, making them potential sources of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) emissions. Variations in water table level change the oxygen content of peat, affecting the oxidation-reduction or redox state of the peat, which is known to influence the biochemical processes and thus greenhouse gas (GHG) emissions. The aim of this study was to assess the effect of controlled anoxic redox conditions and inorganic electron acceptors (TEAs) on redox potential (Eh), and N2O, CH4, and CO2 emissions. In this study during an anaerobic incubation experiment, the rates of formation of these GHGs and Eh values as a function of time were measured from drained (D) and undrained (UD) peat of three nutrient levels: mesotrophic (ME), oligotrophic (OL), and ombrotrophic (OM). Redox conditions were controlled to three levels by nitrate (NO3-), ferric iron (Fe3+), and sulphate (SO42-). In addition, measurements were performed on untreated (Ctrl) peat. The peat was in an anoxic state throughout the incubation (Eh < 300 mV) and the values were in the order of TEA reduction, even though they were mainly in the iron and manganese reduction zones, probably due to the naturally high iron content of the peat. As expected, N2O formation was highest in flasks with added NO3-, and N2O formation was weak and ceased without addition. CH4 formation was reduced in flasks with added NO3- or SO42-, and SO42- addition also inhibited CO2 formation on which NO3- addition had no effect. In contrast, the addition of Fe3+ increased both CO2 and CH4 formation compared to Ctrl treatment, and it is possible that methanogens were involved in the reduction of Fe3+. In Ctrl flask, the redox state did not decrease to the lowest level compared to the other treatments as expected, but the Ctrl treated UD ME peat had the highest CH4 formation at the end of incubation. For all treatments, GHG emissions were higher from nutrient-rich peat in the descending order ME > OL > OM. In general, UD peat also had higher gas formation than D peat. All GHGs were formed the most while Eh values were around 0 mV and the value was especially high for CH4 formation, probably due to the linkage between methanogens and iron. The poor ability of the Pt electrode to detect NO3- or oxygen was the most likely reason for the variable and low Eh values of the flasks with NO3- addition. For the same reason, oxygen leakage of the anaerobic chamber was most likely responsible for the varying Eh values measured from Ctrl treated OM peat. This study suggests that Eh measurement is a useful predictor of the redox state and reactions, but it must be considered together with other measurements and analyses such as microbial analysis, nutrient analysis, and GHG measurements to predict redox processes and GHG emissions in anaerobic peatland. In particular, the role of iron on CH4 emissions requires further research.
  • Intergenerational justice and learning about urban green space management: a study about upper secondary school students in Kumpula, Finland 
    Castellazzi, Eugenia (2023)
    Tiivistelmä - Referat - Abstract To aim for a just and sustainable society, it is essential to consider how we manage cities and to reflect on the role of young people as agents for successful future generations. The school system must take on the responsibility of developing a sense of social justice amongst young people. However, few learning activities are established to promote learning about environmental and intergenerational justice issues, and are usually limited to a top-down approach based on STEM disciplines (Science, Technology, Engineering and Mathematics). In this work, I argue that education in sustainability needs to be opened to a relational approach that introduces new justice perspectives, becoming a driver for active citizenship and public participation. The thesis is based on ten workshops conducted in Kumpula, Helsinki, involving 197 students from two upper secondary schools. The novelty of this work consists in addressing a specific range of upper secondary school students (16 to 19) and combining cognitive and relational learning activities to elicit reflections on environmental justice. I used a learning activity based on a Role-play method to actively involve students in working with justice perceptions and nature-based solutions. The analysis is based on a mixed methods- approach where the statistical analysis (pretest-posttest) and qualitative content analysis support each other. The innovative integration of cognitive and relational learning contributed to a deeper knowledge of urban green space management. This approach elicited new recognition justice perspectives by enhancing the participants’ awareness of community values and needs, comprehending both humans and non-humans. After the learning activity, students were generally more willing to make their voice heard by policy makers and to participate in public discussions. Based on the findings, more resources and time would be needed to build a long-term project in order to assess the permanence of relational and cognitive learning and more widely the efficacy of this approach for transformative learning.
  • Just adaptation? Representations of justice in urban climate change adaptation planning 
    Pietilä, Taru (2023)
    Climate change and its unparalleled and irreversible effects to natural and human systems initiate a need to take immediate action to develop effective measures for climate change adaptation. Both climate change impacts and responses to climate change are found to further aggravate the division between winners and losers that is already present in the pre-existing patterns of development. This is while previous research has found explicit concern for justice to be limited at the urban level. This study seeks to examine urban climate change adaptation strategies critically from the perspective of climate justice to contribute to the understanding of how justice can be identified and advocated for in practice. Justice is conceptualised with four justice dimensions encompassing recognitional, distributive, procedural, and restorative justice dimensions. An Adaptation Justice Index is applied to policy documents to perform a qualitative content analysis. In addition, a literature review is utilised to explore the representations of justice present in the adaptation strategies of eight leading city-level climate change adaptors. Results from the analysis show that on average, procedural justice dimension is the most highlighted among the four dimensions, while restorative justice is the least emphasised. The cities performed the best in allocating responsibilities related to adaptation and in enabling participation in the implementation phase. Strategies frequently emphasise vulnerable people and acknowledge the aim to advance equity and just outcomes with adaptation initiatives. The initiatives described in the strategies, however, seem generally to be insufficient to realise these outcomes. Measures to include the perspectives of vulnerable individuals and communities are found to require improvement to promote empowerment of disadvantaged people for climate justice. The impacts of adaptation measures ought to be scrutinised in more detail to recognise the losses borne by the most disadvantaged in society and to make amends for injustices taking place in the context of climate change and adaptation practice. In conclusion, more research is in order to shed further light to the extent climate justice is accounted for in adaptation practice, especially in the context of the Global South.
  • Kaupunkien ja kuntien kestävän kehityksen työ ja sen seuranta Sitoumus2050 -työkalun valossa 
    Turunen, Iina (2023)
    Finland is committed to sustainable development work, which is guided by the global UN sustainable development action program Agenda2030. The program aims in broad sustainable development work and recognizes cities as key actors in achieving the goals. In Finland, the Commitment2050 online database serves as a tool for achieving the goals of sustainable development. In the website, different actors, including cities and municipalities, commits to operational commitments which require concrete action that promotes sustainability. The purpose of this work is to examine what kind of sustainable development commitments cities and municipalities have made on the “Commitment2050” -website. The thesis aims to create an overall picture of the operational commitments of cities and municipalities. In addition, the thesis highlights what kind of follow-up has been done regarding the commitments and how the actors have evaluated the implementation of the goals of their commitments. The study examined a total of 209 commitments made by cities and municipalities from between the years 2013 and 2022. Monitoring commitments is important so assessment of sustainability implementation can be made. Surprisingly, the study found that a significant proportion of commitments had done no follow-up at all. The actors who had done the monitoring had assessed the fulfillment of the objectives in a very diverse way, which made it difficult to draw conclusions. Thus, deeper knowledge is needed on the commitments implementation.
  • Kemikaalien arvoketjuissa toimivien yhtiöiden käsityksiä biodiversiteetin merkityksestä vedenpuhdistuksessa 
    Silfverberg, Paula (2022)
    Toimiva vesihuolto on yhteiskunnalle elintärkeä. Tärkeimpinä vesihuollon tavoitteina on puhdistaa juomavesi ja vähentää jätevedestä aiheutuvaa ympäristökuormitusta. Kemianteollisuudella on keskeinen rooli tuottaa kemikaaleja vesihuollon käyttöön. Vedenpuhdistus on yksi osa kemikaalien arvoketjua, jossa useat eri toimijat osallistuvat kemikaalien raaka-aineiden valmistukseen, kemikaalien tuottoon, kuljetukseen ja käyttöön, sekä jätteiden loppusijoitukseen. Kemikaalien arvoketjulla on vaikutuksia ympäristöön. Vedenpuhdistuskemikaalien arvoketjua ei ole tutkittu kemikaalien valmistajien ja ostajien välisessä suhteessa. Tutkimuksessani selvitin, kuinka biodiversiteetti näkyy vedenpuhdistuskemikaalien arvoketjun päätöksenteossa ja miten se vaikuttaa kemikaalien ostopäätöksiin. Biodiversiteetti takaa ihmistoimintaakin ylläpitävien ekosysteemipalveluiden toiminnan, kuten veden kiertokulun. Merkittävimpiä uhkia biodiversiteetille ovat vieraslajit, ilmastonmuutos, ravinnekuormitus, ympäristömyrkyt ja roskaantuminen, elinympäristöjen muutokset ja luonnonvarojen liikakäyttö. Kestävillä ratkaisuilla arvoketjun eri toimijat voivat vaikuttaa biodiversiteettiin positiivisesti. Tutkimuksessa haastattelin kuutta vedenpuhdistuslaitoksissa ja kemikaaleja valmistavassa yhtiössä työskentelevää osto- ja myyntipuolen asiantuntijaa puolistrukturoiduilla asiantuntijahaastatteluilla. Lisäksi tarkastelin yhtiöiden vastuullisuusraportteja. Analysoin aineistoa teema-analyysin keinoin. Keskeisimpänä tuloksena havaitsin, että vesikemikaalien arvoketjussa päätettäessä kemikaalien ostamisesta ja myymisestä, toimijat asettavat kemikaalien hinnan ja toimitusvarmuuden ympäristöasioiden edelle. Biodiversiteettiä pidetään tärkeänä, mutta ostopäätöksiin se ei vielä vaikuta. Kemikaalien kehittämiseen ja hankintoihin tarvitaan lisää tietoa biodiversiteettivaikutuksista läpi koko kemikaalien arvoketjun.
  • Kohti luonnonmukaisempaa kaupunkisuunnittelua : hulevesien hallinnan ja luontoarvojen huomioiminen Helsingin asemakaavoituksessa 
    Nikkola, Henna (2021)
    Ilmastonmuutos lisää sään ääri-ilmiöitä kuten mittavia rankkasateita, jolloin myös hulevedet, eli rakennettujen alueiden pinnoille kertyvät sade- ja sulamisvedet, muuttuvat yhä akuutimmaksi ongelmaksi. Yksi tiivistyvien kaupunkien haasteista on hulevesien hallinta. Hulevesiä hallitaan pääasiassa niin kutsutuin perinteisin menetelmin, eli pääasiassa viemäröiden, mutta sen rinnalle on nousemassa niin kutsuttu luonnonmukainen hulevesien hallinta. Luonnonmukaiset menetelmät hyödyntävät luonnon omia prosesseja, ja ne voivat parantaa hulevesien laatua, pienentää virtaamahuippuja, edistää luonnon monimuotoisuutta ja tarjota virkistyshyötyjä. Hulevesien hallinnan ja luontoarvojen huomioiminen kaupunkisuunnittelussa ei ole yksinkertaista - suunnittelussa on huomioitava monenlaisia tavoitteita, joiden yhteensovittamisessa kohdataan ristiriitoja. Ristiriidat voivat paljastaa tavoitteiden taustalla olevia arvoja, ja siten kertoa, minkälaista kaupunkia todellisuudessa toteutamme. Tutkielma toteutettiin osana HELSUS Co-Creation Labia ja yhteistyökumppanina toimi Helsingin kaupunki. Tutkielman tavoitteena oli luontoarvojen ja hulevesien hallinnan huomioimisen selvittäminen ja kaupunkisuunnittelijoiden agentuurin kartoittaminen Helsingin maankäytön suunnittelussa. Tutkielmassa pyrittiin vastaamaan seuraaviin tutkimuskysymyksiin: 1) Millaisia asioita asemakaavoitusvaiheessa mukana olleet Helsingin kaupungin työntekijät mielsivät kuuluvan luontoarvojen pariin? 2) Miten luontoarvot ja hulevesien hallinta huomioitiin projekteissa? 3) Mitä asioita suunnittelijat kokivat keskeisinä luontoarvojen ja luonnonmukaisen hallinnan huomioimiseksi suunnitteluprosessissa yksilön osalta? 4) Mitkä asiat vaikeuttivat luontoarvojen huomioimista tai suojelua ja luonnonmukaisen hallinnan toteuttamista? Tutkielma tehtiin käyttäen eksploratiivisen ja välineellisen tapaustutkimuksen menetelmiä. Aineistona toimi pääasiassa seitsemän Helsingin kaupunkisuunnittelijan haastattelut, joille tehtiin temaattinen analyysi. Tutkielman kohteena oli Helsingin kaupungin hulevesien hallintaa koskeva suunnittelu/päätöksenteko asemakaavoitusprosessissa. Yksittäiset tapaukset olivat asemakaavaprojekteja Helsingin Kaarelan, Laajasalon ja Lauttasaaren kaupunginosista. Teoreettisena viitekehyksenä tutkielmassa hyödynnettiin pääasiassa arvojen, sääntöjen ja tiedon muodostamaa viitekehystä päätöksentekokontekstissa. Aineiston perusteella luontoarvojen ja luonnonmukaisen hulevesien hallinnan huomioimisen kanssa kilpailevia arvoja ja intressejä olivat tekninen toimivuus ja käytännöllisyys, ihmisten turvallisuus, esteettisyys, taloudellinen kestävyys, asuntotuotanto, rakentamisen tehokkuus, tietämättömyys/osaamattomuus, harrastusmahdollisuudet sekä liikenneratkaisut. Yleisesti kaiken kiteyttävänä haasteena oli tilan puute. Vaikka päätavoitteet ja lopulliset päätökset arvoineen tulevat poliittisilta toimijoilta, niin voidaan kuitenkin sanoa, että suunnittelijoilla on mahdollisuuksia toteuttaa omia arvojaan työssään ja säännöissä on jonkin verran niin sanotusti pelivaraa. Suunnittelussa on suunnittelijakohtaisia eroja esimerkiksi siinä, kuinka aktiivisesti ja minkälaisella asenteella kukin huomioi ja edistää luontoarvoja ja hulevesien hallintaa suunnitteluprosessissa. Hulevesien hallinta vaikuttaa Helsingissä olevan murrosvaiheessa kohti vihreämpään infrastruktuuriin nojaavaa suunnittelua. Sitä vauhdittaakseen kaupungin kannattanee lisätä pilottiprojekteja, suunnitella pilottikirjastoa, lisätä työvoimaa ja kuntien välistä yhteistyötä sekä varmistaa, että suunnittelijoilla on tarpeelliset tiedot ja työkalut, joita myös osataan hyödyntää. Tarve jatkotutkimusten tekemiselle löytyy kaupunkisuunnittelussa kilpailevien arvojen ja intressien selvittämisestä ja niiden tunnistamisesta suunnitteluprosessissa ja päätöksenteossa.
  • Kuvitelmissa systeemimuutos ja ilmastonkorjaus – utopiat ja dystopiat uuden sukupolven ilmastoliikkeen työkaluina 
    Aro, Maija (2023)
    The climate political passivity of recent history, dire consequences predicted by climate scientific scenarios, and urgent climate reports emphasize the existential threat posed by the climate crisis. With a lack of consensus on widely accepted solutions, humanity faces increasingly uncertain futures. The shadow of a bleak climate dystopia has led to the interpretation that utopias are missing from climate policy and discourse. This reflects society's challenges in imagining and constructing alternative, functional future perspectives in the context of the climate issue. In my thesis, I examine the extent to which two actors of the new generation climate movement, Elokapina and Operaatio Arktis articulate utopias and dystopias to promote goals and discussions on systemic change and the adoption of climate repair technologies. The material for my thesis consists mainly of content produced by Elokapina and Operaatio Arktis, primarily published on social media platforms and public speeches. Since language is a crucial tool in creating imaginaries, I employ rhetorical discourse analysis to answer my research questions. The rhetorical emphasis in discourse analysis particularly supports my effort to answer the question of how utopias and dystopias are articulated. I extend my interpretation to the performativity, materiality, and prefigurativeness of imaginaries to provide a comprehensive perspective on presenting utopias and dystopias. The most significant findings of my thesis are summarized in three key observations. First, although based on my material Elokapina and Operaatio Arktis shared a common concern about the seriousness of the climate crisis and used partly similar rhetoric, the actors significantly differed in describing the current dystopia and, especially, in presenting utopias. Second, the use of dystopias in Extinction Rebellion's rhetoric did not mean a suppression of utopian expression. Utopias were a significant tool for Elokapina, serving as critical counter-images to the present and being performed in the principles, values, and practices of Extinction Rebellion quite extensively. Additionally, utopias materialized as practical proposals. In this way, Elokapina directed systemic change towards a more sustainable and just direction. Therefore, I interpreted Elokapina regarding utopias as prefigurative, i.e., an actor whose actions practically live out utopias. Third, Operaatio Arktis's rhetoric lacked utopias entirely, with dystopias serving as a significant tool as the actor framed the risks associated with the adoption of climate correction technologies. Operaatio Arktis did not accept catastrophic consequences pointing to a future dystopia that would be avoidable with the current range of methods and through the use of climate repair technologies. Examining utopias and dystopias in the rhetoric of Elokapina and Operaatio Arktis helped to highlight how imaginaries can act as powerful and versatile tools in the actions of the new generation climate movement. They motivated action, raised awareness, and enabled discussions about significant themes related to the root causes and solutions of the climate crisis. Therefore, the results of my thesis are quite intriguing.
  • Late-Holocene sea-surface conditions offshore southeastern Newfoundland based on diatoms 
    Mäkelä, Heini (2023)
    Local climatic interactions between ice, ocean and atmosphere in Northwest Atlantic are significant due to their impacts on global climate. Sea-surface conditions and their links to major climatic patterns during the late-Holocene offshore southeastern Newfoundland, Placentia Bay, were studied using diatoms as paleobioindicators. The record indicates moderate conditions with Arctic influence being little stronger than Atlantic influence during the time period between 5.8 and 4.75 ka BP. The time period between 4.75 and 2 ka BP is dominated by Atlantic influence, except for a cold pulse around 3.5 ka BP. There is a considerable increase in Arctic influence during the time period between 2 and 0.4 ka BP. The strength of the inner Labrador Current seems to be the most important factor affecting the conditions in Placentia Bay. It follows both the NAO index and the strength of AMOC being strongest when the NAO index is positive and AMOC is strong. Cold periods in the record match with positive NAO. Meltwater and sea ice content in the inner Labrador Current seems to be dependent on the conditions in Baffin Bay. The AO index and the orbitally driven HTM, Neoglacial cooling and Roman warm period events affected the dynamics in Baffin Bay during the late-Holocene. Also, the AMOC caused either additional cooling or melting in the region depending on its strength. The major shift at 2 ka BP matched with a recorded shift in the deep convection rate in the Labrador Sea.
  • Le Monden ja Helsingin Sanomien käsitykset ydinvoimasta, sekä vihreän siirtymän kansallisista keinoista ja tavoitteista Ranskassa ja Suomessa 
    Haapanen, Aku (2022)
    Ilmastonmuutoksen torjuminen edellyttää ihmiskunnalta määrätietoisia toimia fossiilisten polttoaineiden käytön lopettamiseksi kasvihuonekaasupäästöjen lopettamiseksi. Yksi tärkeimmistä kysymyksistä ratkaistavaksi on yhä enenevissä määrin kehittyneeseen teknologiaan nojautuvien ihmisyhteisöjen energiansaannin varmistaminen. Ydinvoimaa pidetään luotettavana, tehokkaana ja ennen kaikkea jo olemassa olevana ratkaisuna käsillä olevan energiamurroksen toteuttamiseksi. Kaikki teknologiat ovat kuitenkin poliittisia ja ydinvoima ehkä kaikista teknologioista eniten mielipiteitä jakava. Toisaalta lupaus ainakin päällisinpuolin yksinkertaisesta ja tehokkaasta teknologisesta ratkaisusta puhuttelee monia. Toisaalta ydinvoiman käyttöön ja käyttöön ottoon liittyy suuria epävarmuustekijöitä, kuten rakentamisen hinta, ilmastonmuutoksen vaikutukset voimaloiden toimintaan ja suurvaltapoliittiset siirrot maailmanpolitiikan pelilaudalla. Tämä tutkielma ottaa selvää, kuinka ydinvoiman rooliin energiamurroksen ajurina suhtaudutaan Suomessa ja Ranskassa – kahdessa vauraassa, ydinvoimaa paljon hyödyntävässä Euroopan unionin jäsenmaassa. Aineistona on käytetty suomalaisen Helsingin Sanomat ja ranskalaisen Le Monde päivittäin ilmestyvien sanomalehtien ilmastonmuutosta ja ydinvoimaa käsitteleviä pääkirjoituksia. Analysoidut kirjoitukset ovat Pariisin ilmastosopimuksen ja vuoden 2021 lokakuun väliseltä ajalta. Lähtökohtani on, että Suomen ja Ranskan tärkeimmät sanomalehdet käyttävät aktiivisesti valtaa vaikuttaakseen lukijoidensa suhtautumiseen. Näin ollen Le Monde ja Helsingin Sanomat tarjoavat yhden ikkunan, jonka kautta tarkastella myös laajemmassa asiayhteydessä suomalais ja ranskalaista energia- ja ilmastopolitiikkaa. Käsiteltävät maat ovat monella tapaa samanlaisia, mutta poikkeavat myös paljon toisistaan, mikä näkyy myös maiden ydinvoimakannoissa. Ranska on entinen suurvalta, jonka ydinvoimaloilla on selvä merkitys suurvalta-aseman edes osittaiseksi palauttamiseksi. Suomi on sodan hävinnyt, todella nopeasti teollistunut maa, jolle alusta asti rauhanomainen ydinvoima on vipuvarsi oman teollisen tuotannon edistämiseksi. Analyysissä käy ilmi, että sanomalehdissä ydinvoimaan – sekä energiamurrokseen yleisesti – suhtaudutaan eri tavoilla Ranskassa ja Suomessa. Ranskassa korostuu sosiaalisen oikeudenmukaisuuden merkitys pysyvien ilmastoratkaisujen saavuttamiseksi, kun taas Suomessa pääkirjoituksia värittää ennen kaikkea markkinaorientoitunut tehokkuusajattelu. Suhtautuminen ydinvoimaan on myös erilainen. Ranskassa korostetaan ydinvoimaan liittyviä epävarmuustekijöitä. Suomessa puolestaan painotetaan ydinvoiman todistettuja vahvuuksia, erityisesti tehokkuutta ja päästöttömyyttä.
  • Linkages between dissolved organic matter characteristics and bacterial communities in subarctic ice-covered lakes 
    Tuomela, Nea (2022)
    Climate change causes changes in the Arctic lakes, such as shortening of the ice-covered period and changes in hydrology as well as vegetation of the drainage area around the lakes. With these shifts in the function of the ecosystems, dissolved organic matter drainage from terrestrial sources is expected to increase. Terrestrial, allochthonous DOM is more refractory, higher molecular weight organic matter, which is less available to bacterial consumption. Alterations in the DOM pool of the lake may change the bacterial community composition, which could in turn alter the lake ecosystem. Four ice-covered lakes in Kilpisjärvi region were sampled in spring 2021. Water samples were filtered and analyzed for dissolved and particulate nutrients and carbon. Coloured dissolved organic matter and fluorescent dissolved organic matter properties were defined. Bacterial community composition was determined with multiplex polymerase chain reaction and sequences analyzed with DADA2 pipeline. Principal component analysis (PCOA) was done to visualize differences between lakes, and distance-based redundancy analysis (dbRDA) was used to detect any associations between dissolved organic matter properties and bacterial community composition. The lakes had low nutrient and carbon concentrations and had mainly similar properties of dissolved organic matter. However, P3 surface water had higher nitrate and total dissolved nitrogen concentrations. Optical properties in P3 surface water, Peak T, Peak M, biological index and humification index, indicated autochthonous production and lability of organic matter. This was reflected also in bacterial community composition by higher relative abundance of Gammaproteobacteriales. Lake P3 had also higher relative abundance of Cyanobacteria, which could be the cause for labile organic matter in the site. Sites P2 and P3 had similar bacterial community compositions, which is likely due to the sites forming a lake chain and sharing the same catchment area. The sites were oligotrophic and low nutrient environments as expected in the arctic environment. One of the sites had indications of more labile organic matter, which was reflected in the bacterial community structures. In the future shorter ice-cover period may induce autochthonous production such as Cyanobacteria, which reflects in the bacterial community. Changes in the DOM properties and bacterial communities can alter the whole food chain. with A more comprehensive study on this issue could be useful way of understanding the carbon cycling and impacts of climate change to the subarctic lakes.
  • Local stakeholder perceptions of environmental and employment SDGs of Hannukainen mining plans 
    Kurkinen, Hilja (2023)
    Mining industry often encounters many environmental and social challenges, such as environmental degradation or negative impacts on other livelihoods. However, the opening of a mine can also enhance economic productivity and employment situation, especially in remote areas. This paper analyses the environmental and employment sustainability of mining in Northern Finland, utilizing Hannukainen iron ore mining plans based in Kolari as a case study. The sustainability framework of the research is UN Sustainable Development Goals (SDG) adopted by UN member states in the 2030 Agenda for Sustainable Development (UN, 2015d). The aim of this research is to assess Hannukainen mining plans’ capacity to fulfil environmental and employment SDG targets from the perceptions of relevant local stakeholders. The research questions of this study are: 1. How does the implementation of five environment and employment related SDGs actualise in Hannukainen mining plans from the perceptions of relevant local stakeholders? 2. What kind of synergies and conflicts occur between the mining plans and SDG targets? To answer the questions, ten interviews and media analysis of 15 online articles was conducted. The main method for analysis was Inductive Thematic Analysis (Braun & Clarke, 2006). As a result, three themes are introduced: (1) The mine as an environmental hazard, (2) The mine as a threat to local livelihoods and culture, and (3) The mine as a potential job opportunity. Possible synergies and conflicts between the SDG targets and Hannukainen mining plans are identified separately in each theme. The results suggest that increasing economic growth and employment on one sector, while causing environmental hazards and diminishing the employment possibilities of other sectors is topical in Hannukainen mining plans. Several conflicts rise between SDG targets and Hannukainen mine, regarding mainly environmental issues and two local livelihoods: tourism and reindeer herding. However, synergies between mining plans and SDG targets occur as well since the mine could provide full-time jobs and enhance employment and economic situation of the municipality. Additionally, lack of trust in mining company and to some extent in public authorities is a key component contributing to the experience of mining plan’s unsuccessful SDG implementation.
  • Low carbon actions in households : Assessing the behavior of households in a suburb in Helsinki 
    Pirtonen, Heidi (2014)
    City of Helsinki is aspiring towards carbon neutrality by 2050. Households play an important role in this matter, as their share of carbon dioxide emissions is substantial in the city-level. The energy efficiency of different household appliances is improving, but their usage is rising in tandem. Overall, it is recognized that there needs to be a change in household behaviour. In this thesis I examine what kinds of low carbon actions households are taking and what has motivated them to do so. The thesis is done in co-operation with Aalto University’s HAPPI project, which deals with carbon neutral living in Helsinki. The project studies possibilities to promote climate friendly actions on a residential level. Research was carried out in Mellunkylä, a residential area in eastern Helsinki. The contribution of this thesis is to recognize customs that advance and support low carbon actions on a residential level. The research question took shape as: “What are the low carbon actions that the households in Mellunkylä are taking and why are they taking them?” In order to answer both questions, I decided to use two methods: a survey and interviews. The survey aimed to provide quantitative information about the people living in Mellunkylä as well as a generalization on how they were acting, what they were interested in and what they saw as barriers to further behavior change. In order to better understand what these actions mean for the households and to gain information about their values and other motivations, qualitative interviews were a justified method to further assess the research problem. They aimed to specify the behavior changes that had already occurred and what kinds of motives lie behind these behaviors, as well as to assess the barriers to other behavior changes. Results from both studies indicate that most households were generally making mostly curtailment actions, such as reducing the use of lightning, household appliances and water consumption. There were also efficiency actions, which for the most part consisted of investing on new lightning and household appliances. The households were not fond of acquiring green electricity and were not generally trying to reduce their emissions through heating-related solutions. The households had a general idea of why they should reduce their energy consumption: energy use was commonly understood a societal problem and everyone’s responsibility. The interviewees mentioned altruistic values and biospheric concerns most often, which was fruitful in that these kinds of values are important in saving energy in the long run. Of the external motivators economic factors were mentioned repetitively. They were thought to have an effect on the individual as well as on the economy. It seemed that the households were hoping to be able to use energy without worries and with small expenses. This suggests that the motivations for low carbon actions lie within costs and ease of life rather than environmental concerns. Habits were often mentioned as a barrier to behavior change. Also costs and inability to follow one’s energy consumption were some of the barriers that stood out in the studies. This is in line with the fact that the participants were making more of the curtailment actions rather than efficiency actions, which can be more costly. The case study households showed interest in following their energy consumption, so some kind of feedback as well as personal recommendations for improvement could be in place. This is an important area where the city could take actions, for example, by supporting the households to commit in reducing their energy consumption. It should be noted that in reaching a low carbon lifestyle, there are various routes, of which living-related low carbon actions are only one piece. It is important to find the actions and interventions which can result in long lasting behavioral changes.
  • Low carbon with a splash of justice: Role of experimentation in the Finnish built environment 
    Mokkila, Saija (2022)
    This thesis aimed to systematically map and review built environment low carbon and/or social justice experiments in Finland and understand how municipalities engage in experimentation and what challenges municipalities face when engaging in it. To find what forms of experiments for socially just low carbon buildings and housing can be found in Finland, 1 386 objects in 15 databases were systematically mapped. 204 unique built environment low carbon and/or social justice experiments were recognized and further reviewed. Municipality engagements and challenges in experimentation were approached through a case study of four Finnish municipalities Helsinki, Joensuu, Turku, and Vantaa. 14 case city officials and other persons working with experimentation were interviewed, and 1 839 pages of case-city-related documents were gathered. Triangulation was used to analyze the interview transcripts and additional documents in an abductive manner to find what kind of policy engagements for experimentation municipalities participated in and what kind of challenges the municipality representatives identified when doing so. This thesis discovered that there is a large focus on building and nurturing niches and testing technologies with a lack of focus on profound social justice and the behavioral side of the sustainability transitions. The sustainability experimentation in the built environment was technology-focused and lacked profound social justice aspects. Even though there were some overlaps between low carbon and social justice in the experiments, the experiments did not seek to increase social justice but rather to do low carbon in a socially just way. Municipalities strongly focused on building and nurturing niches and experimentation as a process. Municipalities did not do much experimentation in their operations and focused on the experimentation process rather than the subject matter. Also, the municipality experimentation engagements were characterized by a lack of novelty, flexibility, and uncertainty. This thesis also reveals that the links between sustainability experimentation and sustainability transitions may not be as straightforward as the scientific models and frameworks present. Though this thesis made several findings about sustainability experimentation, there remains a particularly urgent need to develop and conduct additional studies. They are needed to understand better the phenomena in the socially just low carbon experimentation in the built environment to enable just transition to low carbon buildings and housing.
  • Manifestations of “less and better meat” in the values and actions of Finnish natural pasture-raised beef buyers 
    Hyypiä, Iisa (2022)
    More meat is consumed in the world than ever before causing an intensifying number of social, environmental, and economic problems. Lately, consumers’ willingness for change has been examined by several scholars. Plenty of hope is placed on the consumers’ role as active participants in the sustainable nutrition transition. Therefore, many consumer-based strategies have been conceptualized to reduce meat consumption and thus enhance the transition to less animal-based proteins without taking it to the extreme (no meat/vegan ideology). “Less and better” is one of these strategies. It encourages, not only to eat less meat but also to replace the remaining meat with “better” meaning meat with positive outcomes and smaller negative environmental and social impacts. In this context “better meat” refers to extensively produced natural pasture-raised beef (luonnonlaidunliha) which has positive impacts on for instance animal wellbeing, biodiversity, and farmers’ livelihoods. This research aims to understand if buyers of “better meat” make linkages between “less” and “better” and whether they perceive the need for a sustainable protein transition. Being a relatively new approach, “less and better” has not been studied before from the perspective of consumers who already choose “better”. The data were collected in cooperation with Bosgård farm, which produces natural pasture-raised beef. Firstly, an email survey was sent out to the customers of the farm receiving 126 responses and secondly, six consumers were interviewed to gather a more in-depth understanding of the consumer perspectives. The results suggest that while a clear linkage between buying better and eating less exist, it also has a reverse side; many consumers are consuming more meat due to the access to what they perceive as better. The motives for meat reduction vary widely yet environmental and climate change reasons have not reached a significant position. It seems that meat reduction amongst the buyers of “better” meat is shadowed by pleasure orientation, lack of understanding of the scope of negative impacts of meat production and of the message “less meat”, high trust in Finnish meat production as such, and resistance to change caused by polarized information and attitudes. Even though many participants had found ways to incorporate more sustainable eating habits into their everyday lives and meat's position at the top of the food hierarchy is slowly changing, the results do not seem to correspond to high expectations held by the proponents of the concept. Though this is a small study, it questions a validity of the claim that “less and better” can be a sufficiently strong solution to support a sustainable nutrition transition in the way it is currently being presented.
  • Matkalla kohti kiertotalouskaupunkia - yhteistyön merkitys Helsingin kiertotaloudessa 
    Metsola, Saana (2023)
    Ilmastonmuutos on yksi aikamme viheliäistä ongelmista, jonka yhtenä ratkaisukeinona pidetään kiertotaloutta. Kaupungit ovat ilmastonmuutoksen torjunnassa avainasemassa muun muassa suuren asukaslukunsa ja hiilijalanjälkensä takia. Kiertotalouskaupunkeja syntyy enenevissä määrin, ja myös Helsingin kaupunki on julistautunut kiertotalouskaupungiksi. Matka lineaarisesta kaupungista kohti kiertotalouskaupunkia on kuitenkin pitkä, ja siinä matkalla tarvitaan myös muita toimijoita kaupungin lisäksi. Tutkimuskirjallisuuden mukaan yhteistyö on avainasemassa niin itse kiertotaloudessa kuin kiertotalouskaupungeissakin. Myös Helsingin kaupunki on tunnistanut tarpeen toimia yhteistyössä muiden toimijoiden kanssa kiertotalouskaupungin rakentamisessa. Avainasemassa olevia yhteistyön osapuolia ovat niin yritykset kuin kaupunkilaisetkin. Helsingin kaupunki on lanseerannut Kiertotalousvahti- palvelun, jossa on 31 kiertotalouteen liittyvää toimenpidettä. Näitä toimenpiteitä voidaan pitää Helsingin kärkihankkeina kiertotalouden saralla. Näissä hankkeissa uskoisi siis myös yhteistyön näkyvän kaupunkilaisten ja yritysten kanssa. Tutkimuksen tavoitteena oli analysoida teorialähtöisen sisällönanalyysin avulla Kiertotalousvahdin 31 toimenpidettä ja etsiä toimenpiteistä yhteistyötä. Tarkempaan syynäykseen otettiin yhteistyö kaupunkilaisten ja yritysten kanssa. Tutkimuksessa oli tarkoitus selvittää myös kaupungin, kaupunkilaisten ja yritysten rooleja yhteistyön saralla. Tutkimuksessa selvisi, että Helsingin kiertotalouden kärkihankkeissa yhteistyötä näkyy yllättävän vähän. Yhteistyö kaupunkilaisten kanssa on lähes olematonta, ja yritystenkin kanssa vähänlaista. Yhteistyön avulla kiertotalous saataisiin leviämään laajemmalle ja sen vaikutukset olisivat laajempia. Kaupunki jättää paljon potentiaalia käyttämättä kiertotalouden suhteen.
  • Media response to a nationwide energy-saving campaign: Astetta alemmas in the Finnish online news media 
    Nurmi, Aino (2023)
    The 2022 energy crisis heightened concerns about energy sufficiency. In response, Finland launched a nationwide energy-saving campaign, Astetta alemmas, to encourage Finns to take concrete and effortless energy-saving actions in their daily lives. The aim of this thesis was to analyze which energy-saving behaviors the media emphasize in the campaign and how the campaign messages are framed in the media. The analysis of media response was chosen because there is a lack of this type of study related to energy-saving campaigns. The data consisted of 94 news articles collected from the five national online news media from October 1st to December 31st, 2022. The data was analyzed using frame and content analysis. The analysis was based on a pre-determined theoretical framework consisting of nine energy-saving and general news frames: economic, social, environmental, personal, moral, health, conflict, responsibility, and human-interest frames. In addition, two new frames were recognized from the data. The energy-saving behaviors found were classified as curtailment and efficiency behaviors. The campaign was portrayed as an opportunity to save money through effortless energy-saving measures such as lowering the room temperature. Most of these actions were categorized as curtailment behaviors. The media showed the importance of individuals’ efforts to save energy in a society by emphasizing that saving energy has paid off and that new saving habits have become a routine part of daily life. On the other hand, energy-saving actions led to compromises in living standards, resulting in suffering and high electricity bills. The media portrayed the negative consequences by emphasizing conflicts and showing how far people are willing to go to save energy while risking their health. The impact on the environment was seen as a secondary principle. The crisis was a suitable moment for the media to highlight the importance of energy conservation. The campaign was well justified as a campaign of the whole nation, highlighted by solidarity and shared responsibility to save energy. Nevertheless, some of the tips given were targeted at specific households. The media raised a dichotomy by highlighting individuals as heroes or sufferers through their experiences. This is a novel contribution to previous studies. This dichotomy provides room for further studies that could focus on the people behind the news stories and the long-term effects of post-campaign energy-saving measures. This thesis provides initial insights into the media response to the Astetta alemmas campaign during the first three months and in specific news media, but the results cannot be generalized to the response of all news media during the campaign.
  • Minimum Safeguards in EU Taxonomy Reporting : Case Study Comparing Reporting and Actual Performance of Finnish Companies 
    Kalpala, Erna (2023)
    To align with the goals of the Paris Agreement, the EU has taken proactive measures, including the implementation of the Taxonomy Regulation (EU) 2020/852, which establishes standardized definitions for sustainable economic activities and mandates annual reporting by companies within its scope. This master's thesis delves into an investigation of Finnish companies' 2022 EU Taxonomy reporting, with a specific focus on a critical aspect of the EU Taxonomy known as Minimum Safeguards (“MS”). The MS necessitate companies to meet specific performance criteria in the realms of certain social and governance aspects, including having an adequate human rights due diligence (“HRDD”) process. The thesis does this by addressing two primary research questions: 1) How do Finnish stock-listed companies report about their MS alignment in their reporting for the financial year 2022? and 2) For those companies who claim to meet the MS, does their actual performance on MS, particularly in the area of HRDD, align with their reporting? The research involved an analysis of the 2022 EU Taxonomy disclosures made by the 30 largest stock-listed non-financial companies headquartered in Finland. In addition, for those companies claiming compliance with the MS, their human rights reporting was evaluated using the Corporate Human Rights Benchmark's Core UNGP Indicators methodology, following the guidance provided by the European Platform on Sustainable Finance in their Final Report on MS in October 2022. Based on this thesis, a substantial portion (20/30) of the analysed companies claimed they meet the MS. Among the rest, only three explicitly acknowledged non-compliance, while others took a more ambiguous approach, refraining from explicitly admitting non-compliance. As for the second research question, the results suggest that a significant number of the companies claiming compliance may not entirely meet the human rights standards outlined in the Final Report on MS, with only two companies clearly meeting these standards, and an additional five potentially meeting them, subject to further verification. This raises concerns about the accuracy of sustainability claims in these companies' EU Taxonomy disclosures and questions the effectiveness of current disclosure practices on EU Taxonomy. The findings may prove useful to companies seeking to enhance the quality of their sustainability reporting and prepare for forthcoming due diligence laws.
  • “Money talks” : Citizen views among Finnish young adults on how to reduce the impact of food production and consumption on climate and biodiversity and which policy instruments to use 
    Varis, Saara (2022)
    Climate change and biodiversity loss are some of the most serious challenges the humanity is facing today. Current food systems are a major contributor to both global crises with massive negative impacts on climate and biodiversity, and thus, sustainable food system transition is inevitable in slowing down the further progress of climate change and biodiversity loss. One way to tackle the unsustainabilities of the food systems is through policy interventions, which can guide both food production and consumption to a more climate- and biodiversity-friendly direction. The aim of this thesis was to examine the popularity of different policy instruments in terms of reducing food’s climate and biodiversity impact among Finnish young adults. Moreover, this thesis aspired to find out which areas of food production and consumption Finnish young adults think policy interventions should target. Young adults were chosen as a target group, because they are in an important position in sustainability transitions. This research is based on survey data and the method applied was content analysis with characteristics from both qualitative and quantitative approaches. The data was analyzed in Atlas.ti program by using inductive and deductive content analysis methods. The results indicate that the most popular policy instruments for reducing food’s impact on climate and biodiversity among Finnish young adults were market-based, including taxes as the most popular and subsidies as the second most popular individual measure. This is in contrast to previous literature, where taxation and other market-based policies have been reported to be the least favored policies. Furthermore, information-based policies, of which especially raising awareness, regulatory instruments, of which particularly price regulation, as well as public procurement policies like a vegetarian day in public food services were among the most popular policy instruments. Although not directly examining acceptability, these results offer a glimpse on policy acceptability, which is found to be crucial in successful policy implementation. Further research is needed to study the acceptability of these policies comprehensively. Moreover, policy target areas related to food consumption rather than production were more popular among the respondents. Target areas such as favoring domestic food, reducing or ending animal product consumption and production, transitioning to vegetarian diets, making better (e.g. climate-friendly) choices easier, and converting meat into a luxury product were the most suggested. These results could be scaled up in future studies and then utilized in creating sustainable policies for food consumption and production, and that way reduce the climate and biodiversity impact they cause.
  • Multi-decadal greening and climate trends around Arctic lakes and their connection to lake organic carbon 
    Jutila, Suvi (2022)
    As a response to Arctic climate warming, Arctic vegetation is changing. Studies have shown a greening trend both in satellite-derived data (spectral greening) and in field measurements (vegetation greening). Some studies indicate that the increase in vegetation productivity in the Arctic is one of the drivers of the increase in organic carbon in lakes, lake brownification. The aim of this thesis is to bring more knowledge about this possible connection between vegetation change and lake brownification in a circumpolar context. My two main research questions are: 1) How has the summer terrestrial NDVI value, in short, the normalized vegetation index to estimate the amount of green vegetation, changed during the past 20 years in the study areas and is there variation between lake groups? and 2) How has the amount of organic carbon changed in the studied lakes? These questions are complemented by the following sub-questions: Have summer temperature or precipitation affected NDVI change? What is the relationship between summer NDVI and lake organic carbon, and between the change in temperature/precipitation and the change in lake organic carbon? I conducted a circumpolar study about multi-decadal greening and climate trends around 15 Arctic and subarctic lakes divided into five groups, using satellite-derived vegetation data (NDVI). I then compared these data with sediment data to study if potential greening has a connection to the lakes’ total organic carbon load. The study areas are located in South-Central Canada, Alaska, North Finland, Russia – Yakutia and Russia – Chukotka. I found that summer surface air temperature has increased significantly in all of the study areas during 1961-2018. Total summer precipitation has not significantly changed during the study period, but the trend has been positive in all study areas except for Russia, Chukotka. Winter precipitation has significantly decreased in Alaska, and in both of the Russian areas, and significantly increased in Jänkäjärvi, Finland during 1961-2018. NDVI has increased significantly in Jänkäjärvi (Finland), Rauchuagytgyn and Illerney (Russia, Chukotka) during 2000-2021. In these lakes the environmental variables were affecting NDVI. The connection between NDVI in the study areas and lake TOC was positive, but not statistically significant. The situation was the same for the comparison between temperature and TOC for most of the lakes. When comparing the change in summer and winter precipitation and the change in TOC, for most of the lakes, precipitation had decreased while TOC increased. In conclusion, the results indicate that environmental conditions are changing in the study areas and that in some areas that has led to an increase in summer terrestrial NDVI values. It may also be that catchment area greening can increase lake TOC. However, this connection needs more research, for instance with a larger sample size. This study with its varying results also supports the notion of heterogeneous Arctic environments.
  • Navigating the complexities of carbon accounting in the food value chain – scope 3 emissions accounting challenges in the Finnish food industry sector 
    Juurikka, Veera (2023)
    Global warming should not rise beyond 1.5°C, which means that all sectors in the economy are needed to reduce greenhouse gas emissions. The need for corporations to account their value chain emissions has sprung a variety of accounting and reporting standards. In response, Greenhouse Gas protocol established the Corporate Value Chain (Scope 3) Accounting and Reporting Standard. However, the success of the scope 3 emission accounting has been determined to be insufficient. The unsuccess of scope 3 emission accounting and reporting can be explained with the challenges that have been widely identified. Nevertheless, the identified challenges do not provide a deeper understanding of why they hinder the success of scope 3 accounting and reporting. This thesis delves into the challenges of scope 3 accounting by investigating four Finnish food industry corporations. The study for this thesis was conducted as semi-structured interviews of seven experts who work with the scope 3 accounting and reporting of their corporation. The interviews were held in May of 2022 and theory guided thematic analysis was used to analyze the results. The results show that there are challenges concerning measurement and evaluation, knowledge and guidance and communication. The measurement and evaluation challenges include data collection challenges, data quality challenges and data processing challenges. The key finding from this study is that most of these challenges are highly connected. The reporting corporation and suppliers’ resources and guidance play a key role in data collection and how accurate data can be obtained for the GHG inventory. These affect the comparability of gained emission factors and how comparable the emission information of products, production lines and corporations are. The findings of this study share understanding of the complexity of scope 3 accounting challenges.

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