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Befintliga lekplatsers utveckling
Get PDFUnder de senaste årtiondena har barns tillgång till platser i staden som de kan
upptäcka och göra till sina minskat drastiskt. Platser planerade av vuxna för barn,
så som till exempel lekplatser, har därför blivit viktigare för barns utomhuslek.
Lekplatser har länge varit en självklarhet i den bebyggda miljön i Sverige, men
kvaliteten på lekplatser varierar stort. För att lekplatser ska ge barn goda möjligheter
för lek och rörelse spelar miljöns fysiska kvaliteter en viktig roll.
Syftet med detta arbete är att undersöka möjligheter för förvaltningen att ta en
större roll i skapandet och utvecklingen av lekvärde och hållbarhet på befintliga
lekplatser. Arbetet ger exempel på förvaltningsbaserade lösningar som kan användas
i detta utvecklingsarbete. Arbetet svarar också på följande två frågeställningar: (1)
Hur arbetar förvaltningen kring hållbarhets- och lekvärdesaspekter på befintliga
lekplatser idag? (2) Vilka möjligheter finns det att höja lekvärdet på befintliga
lekplatser genom förvaltning?
Genom en litteraturstudie och en fallstudie av två lekplatser belyser arbetet hur
lekplatser i olika storlek kan förvaltas på ett sätt som bidrar till att höja lekvärden
och hållbarhet. Genom intervjuer med tjänstepersoner på Malmö stad, platsanalyser
och observationer, undersöks hur lekplatserna förvaltas idag och vilka styrkor
och brister som finns i form av lekvärden. Utifrån dessa styrkor och brister har
ett utvecklingsförslag tagits fram för vardera lekplats med målet att inspirera och
öppna upp för fler utvecklingsidéer.
Det visar sig i teorin att det finns stora möjligheter för utveckling av lekvärden på
befintliga lekplatser genom förvaltning, men i praktiken kan dessa möjligheter
begränsas på grund av förhållningsregler, arbetssätt, policys och brist på kunskap.
För att låta förvaltningen ta en större roll i skapandet och utvecklingen av lekvärden
på lekplatser krävs ett mer flexibelt arbetssätt och en mer flexibel syn på vad en
lekplats är. En viktig källa till kunskap är att analysera och utvärdera befintliga
lekplatser regelbundet och även observera hur de används av olika målgrupper.In recent decades, children’s access to places in the city that they can discover and
make their own has decreased drastically. Places planned by adults for children,
such as playgrounds, have therefore become more important for children’s outdoor
play. Playgrounds have long been a matter of course in the built environment in
Sweden, but the quality of playgrounds varies greatly. In order for playgrounds
to provide children with good opportunities for play and movement, the physical
qualities of the environment play an important role.
The purpose of this work is to investigate opportunities for the administration to
take a greater role in the creation and development of play values and sustainability
in existing playgrounds. This master thesis provides examples of management-
based solutions that can be used in this developmental work. The thesis also
answers the following two questions: (1) How does the outdoor management
work with sustainability and play value aspects on existing playgrounds today? (2)
What opportunities are there to increase the play value of existing playgrounds by
management?
Through a literature study and a case study of two playgrounds, the work highlights
how playgrounds of different sizes can be managed in a way that contributes to
increasing play values and sustainability. Through interviews with officials at the
city of Malmö, site analyzes and observations, it is investigated how the playgrounds
are managed today and what strengths and weaknesses exist in terms of playground
values. Based on these strengths and weaknesses, a development proposal has been
drawn up for each playground with the aim of inspiring and opening up for more
development ideas.
It turns out in theory that there are great opportunities for developing play values
on existing playgrounds through management, but in practice these opportunities
can be limited due to rules of conduct, working methods, policies and lack of
knowledge. In order for the administration to take a greater role in the creation
and development of playground values, a more flexible way of working and a more
flexible view of what a playground is is required. An important source of knowledge
is to analyze and evaluate existing playgrounds regularly and also observe how they
are used by different target groups
Alléer i stadsrummet
Get PDFTill följd av almsjukan som spred sig över Sverige i början
av 2000-talet, förlorade Hertig Karls allé i Örebro succesivt
alla sina almar (Ulmus glabra) innan 2014, och lämnade det
karaktäristiska gaturummet tomt.
Enligt kommunen skulle en ny gestaltning komma efter
avverkningen. En allé med förbättrad rörlighet för gående och
cyklister och som skulle återge Hertig Karls allé sin gröna
identitet. Tillfälliga lösningar som bland annat snabbväxande
träd, planterades där almarna tidigare stod, men 2023 har
ingenting hänt.
Samtidigt som Hertig Karls allé fortfarande saknar sin allé
förtätas städerna allt mer och grönstrukturen får slåss om de
ytor som finns kvar. Det urbana landskapet utgör en plats med
många utmaningar för både träd och människor.
Genom att studera befintliga urbana alléers visuella
design och funktioner för gaturummet, ämnar arbetet skapa
ett ett konceptuellt gestaltningsförslag för Hertig Karls allé.
Gestaltningsförslaget ska lyfta hur urbana träd och framtida
alléer kan optimera sina ekosystemtjänster i stadslandskapet.
Från att ge skugga och hjälp med att reglera den urbana
värmeön till att ge visuella kvaliteter, spelar urbana träd
en viktig roll för våra städer och deras framtid, mitt under
pågående klimatförändringar och ökande temperaturer.As a result of the elm disease that spread across Sweden in
the early 2000s, Hertig Karl’s Avenue in Örebro, successively
lost all its elm-trees before 2014. Leaving the characteristic
street space empty. According to the municipality, a new
design would come after the felling. An avenue with
improved mobility for pedestrians and cyclists and which
would recreate Hertig Karl’s Avenue’s green identity.
Temporary solutions such as fast-growing trees were planted
where the elms used to stand, however today in 2023, nothing
has happened.
At the same time that Hertig Karl’s Avenue still lacks its
avenue, our cities are becoming more and more dense and
the green structure has to fight for the available spaces that
remain. The urban landscape is a place with many challenges
for both trees and people.
By studying the visual design and functions of existing
urban avenues for the street space, the work aims to create
a conceptual design proposal for Hertig Karl’s Avenue. The
design proposal will highlight how urban trees and future
avenues can optimize their ecosystem services in the urban
landscape. From providing shade and helping to regulate the
urban heat island to providing visual qualities. Urban trees
play an important role for our cities and their future, amid
ongoing climate change and rising temperatures
Värmereducerande åtgärder för urbana mikroklimat
Get PDFDet står klart att rådande klimatförändringar har lett och kommer i
framtiden att leda till ökade temperaturer samt fler och längre perioder
av värmeböljor. Ökade temperaturer i kombination med värmeöeffekter
medför att urbana miljöer är särskilt utsatta och människor som väljer att
bosätta sig på sådana platser riskerar allvarliga konsekvenser när det gäller
hälsa och välbefinnande. De negativa effekter värme har på människors
hälsa är entydiga och kan leda till allvarliga följder som utmattning eller
dödsfall. Värmeböljan i Sverige år 2018 är ett exempel på en allvarlig
händelse med rekordhöga temperaturer i hela landet, där onormalt många
dödsfall påvisades jämfört med samma period år 2017. Yrkesverksamma
inom gestaltning- och projekteringsprocessen behöver ta till sig kunskapen
om vilka värmereducerande åtgärder det finns att tillgå för att lindra
värmeöeffekter och därmed forma framtidens resilienta och hållbara
städer.
Arbetet berör åtgärder för värmereducering som yrkesverksamma
inom gestaltning- och projekteringsprocessen kan tillämpa för att skapa
goda urbana mikroklimat, året runt. Åtgärderna har studerats via en
litteraturstudie och tillämpats i en så kallad tillämpningsstudie där vi har
undersökt ett perspektiv för hur dessa kan tillämpas vid omprojektering och
nyprojektering. De identifierade åtgärderna har delats in i kategorierna;
material, vegetation, skugga, bebyggelsegeometri och vatten, vilka har
visat sig vara aktuella under olika faser av planeringsstadiet samt i olika
skalor. Åtgärder som berör bebyggelsegeometri är främst applicerbara i
ett tidigt planeringsstadie och har stor inverkan i olika skalor; exempelvis
påverkar placeringen av en enda byggnad skuggbilden över en dag och
vid stora områden av tät bebyggelse sker generellt en hög värmelagring
vilket leder till ökade urbana värmeöeffekter.
Vegetationens inverkan på mikroklimat är tydlig tack vare dess evaporativa
kylning och skuggivande förmåga. Vitaliteten för dessa är högst relevant
då träd som är livskraftiga kan bidra till mer evaporativ kylning och skugga,
således krävs en växtbädd anpassad efter trädets förväntade slutstorlek.
Lövfällande träd är att föredra för att uppnå ett gott urbant klimat året
runt, då de tillåter solljus att skina igenom höst, vinter och vår samt skuggar
sommartid när solen är stark. Aspekter som är väsentliga att beakta vid
växtval i urbana miljöer är därmed bladmassa, grenverk, bladutspring
och bladfällning. Således är det inte bara viktigt huruvida vegetationen
är närvarande i städerna, utan också vilka arter samt hur och var dessa är
placerade.
Material har visat sig ha en stor inverkan på mikroklimat där permeabilitet,
värmekapacitet och färg (albedo) är av stor betydelse. Permeabla
markbeläggningar och ytor är genomsläppliga för vatten vilket kan bidra
med markfukt, som i sin tur leder till lägre temperaturer. Vid torka kan den
avkylande effekten via avdunstning från material och vegetation avta
på grund av vattenbrist. Således är det viktigt att kombinera flera olika
värmereducerande åtgärder i städerna, såsom högt albedo på material
och skuggivande element som exempelvis torktoleranta träd, vilka förblir
välmående trots längre perioder av torka.
Helårsperspektivet är i en svensk kontext, av yttersta vikt för att skapa
resilienta, hållbara och trivsamma urbana miljöer där människor vill vistas
både under heta sommardagar och kyliga vinterdagar. Förekomsten av
både soliga och skuggiga platser behöver existera så människan själv kan
välja vart den vill vistas beroende på årstid och personliga behov. Genom
att förstå hur material, vegetation, bebyggelsegeometri, vatten och skugga
kan påverka en plats eller en hel stad, kan vi tillsammans skapa framtidens
resilienta, hållbara och trivsamma urbana miljöer för alla individer, stora som
små.It is clear that current climate changes have led and will in the future lead
to increased temperatures and more and longer periods of heat waves.
Increased temperatures combined with heat island effects entails that
urban environments are particularly vulnerable and the people who choose
to settle in such places risk serious consequences in terms of health and
well-being. The negative effects heat has on human health are clear and
can lead to serious consequences such as exhaustion or death. The heat
wave in Sweden in 2018 is an example of a serious event with record-high
temperatures throughout the country, where an abnormally high number of
deaths were detected compared to the same period in 2017. Professionals
in the design and project-planning process need to acquire the knowledge
of what heat-reducing measures that are available to alleviate heat island
effects and thus shape the resilient and sustainable cities of the future.
The thesis concerns measures for heat reduction that professionals in the
design and project-planning process can apply to create good urban
microclimates, all year round. The measures have been studied through
a literature study and applied in an application study where we have
examined a perspective for how these can be applied in redesigning
and new planning. The identified measures have been divided into the
categories; materials, vegetation, shade, building geometry and water,
which have proven to be relevant during different phases of the planning
stage and at different scales. Measures that affect building geometry are
mainly applicable in an early planning stage and have a large impact at
different scales; for example, the placement of a single building affects
the shadow image over a day and in large areas of dense built-up there is
generally a high heat storage, which leads to increased urban heat island
effects.
The impact of vegetation on microclimates is clear thanks to its evaporative
cooling and shading ability. The vitality of these is highly relevant as trees
that are thriving can contribute to more evaporative cooling and shade,
thus a plant bed adapted to the expected final size of the tree is required.
Deciduous trees are preferred to achieve a good urban climate all year
round, as they allow sunlight to shine through during autumn, winter and
spring and provide shade during summer when the sun is strong. Aspects
that are essential to consider when choosing plants in urban environments
are thus leaf mass, branch density, leaf emergence and leaf shedding.
Thus, it is not only important whether the vegetation is present in the cities,
but also which species and how and where these are located.
Materials have been shown to have a major impact on microclimates where
permeability, heat capacity and colour (albedo) are of great importance.
Permeable ground coverings and surfaces are pervious to water, which
can contribute to soil moisture, which in turn leads to lower temperatures.
In droughts, the cooling effect through evaporation from materials and
vegetation can decrease due to a lack of water. Thus, it is important to
combine several different heat-reducing measures in cities, such as high
albedo on materials and shading elements such as drought-tolerant trees
that remain thriving despite longer periods of drought.
The year-round perspective is, in a Swedish context, of utmost importance
to create resilient, sustainable and pleasant urban environments where
people want to stay both during hot summer days and cold winter days.
The existence of both sunny and shady places needs to exist so that people
can choose where they want to stay depending on the season and personal
needs. By understanding how materials, vegetation, building geometry,
water and shade can affect a place or an entire city, can we together
create resilient, sustainable and pleasant urban environments of the future
for all individuals, large and small
Studie av regeln 3-30-300 genom tillämpning av regeln i stadsdelen Brunnshög
Get PDF3-30-300-regeln kan vara en målsättning vid planering av nya projekt och projektering av nya stadsdelar, samt
ge en grund för diskussion och debatt. Regeln kan även användas som analysmetod för redan befintliga
stadsdelar.
I detta arbete presenteras en genomgång av 3-30-300-regeln. Regeln 3-30-300 är en evidensbaserad
tumregel som är baserad på klimat- och biofilisk forskning för hälsosamma och hållbara städer. Regeln innebär
att varje individ ska kunna se 3 träd från sin bostad, bo i ett bostadsområde med 30% krontäckningsgrad och
ha tillgång till ett grönområde inom 300 meter från bostaden.
Vidare presenterar detta arbete den teoretiska bakgrunden för 3-30-300-regeln. Slutligen tillämpas regeln på en
stadsdel under utveckling, Brunnshög. Brunnshög är ett nyexploaterat område i Lund med höga visioner och
hållbarhetsmål. Undersökningen av området visade att majoriteten av invånarna i Brunnshög har mindre än
300 meter till ett grönområde och flera av de boende har mindre än 300 meter till flera grönområden i
stadsdelen. Däremot har de västra delarna av området mer än 300 meter till ett grönområde. 30%
krontäckning var ett svårt värde att uppnå i ett tätbebyggt område. En krontäckning på 30% resulterade i en
avsaknad av öppna ytor. För att implementera 30% krontäckningsgrad hade konsideration till värdet krävts
tidigare i gestaltningsprocessen. Tre synliga träd från varje bostad var inte möjligt att säkerställa i studien då
kännedom om enskilda byggnader saknades. Det framgick däremot att trånga passager var mest utsatta för
risken att inte uppnå målet.The 3-30-300 rule can act as an objective in the planning of new city districts and provide a foundation for
discussion. The rule can be used as a method for analysis for planned and existing neighborhoods and
residential areas.
In this work, a review of the 3-30-300 rule is presented. The 3-30-300 rule is an evidence-based rule of thumb
based on climate and biophilic research for healthy and sustainable cities. The rule means that every person
should be able to see 3 trees from their home, live in an area with a 30% canopy cover and have access to a
green area within 300 meters from the residence.
Furthermore, this work presents the theoretical background for the 3-30-300 rule. Finally, the rule is applied
to an area under development, Brunnshög. Brunnshög is a newly developed area in Lund with high visions
and sustainability goals. The survey of the area showed that the majority of residents in Brunnshög have less
than 300 meters to a green area and several of the residents have less than 300 meters to several green areas in
the district. In contrast, the western parts of the area have more than 300 meters to a green area. 30% canopy
coverage was a difficult value to achieve in a densely built-up area. A canopy coverage of 30% resulted in a lack
of open areas. In order to implement a 30% canopy cover, consideration of the rule had been required earlier in
the design process. 3 visible trees from each residence was not possible to ensure in the survey as knowledge of
individual buildings was missing. The survey showed, however, that narrow passages were the most exposed to
risk of not achieving the target
Skin lesions in group-housed gilts and sows at commercial farms
Get PDFSkin lesions are a common problem within group-housed gilts and sows. Since 2013, all EU member states are required to ensure that all gilts and sows are kept in group housing. Pigs used in production in Sweden today originate from the wild boar. Wild boars and production pigs still share many traits. Agonistic behaviour includes both aggressive and submissive behaviours. Aggressive behaviour between pigs often leads to skin lesions. Reducing agonistic behaviour in pig production is a challenge but, if successful, it will improve animal health, welfare, and production. Welfare assessment and benchmarking of pig production are important tools to ensure the health and welfare of the animals. The purpose of this bachelor thesis is to determine the variation of skin lesions in group-housed gilts and sows in conventional pig production in Sweden. This thesis aims to determine in what regard skin lesion differences exist with respect to different farms, differences between gilts and sows, and differences between pigs in new and old group constellations. Data used in this thesis, was collected within the research project “Ask the sow”. The data covered skin lesions, lameness, dirtiness, age, and time since a new group constellation was made. The data were processed statistically. Skin lesions were registered from 575 different pigs. There were statistically significant differences in skin lesions between different farms. Sows had significantly more skin lesions than gilts. Pigs in new group constellations had significantly more skin lesions than pigs in old group constellations. Furthermore, pigs had more skin lesions on the front part of their body within all groups assessed. The variation in skin lesions between farms is assumed to depend on the physical differences in space and environment on the different farms. The fact that sows had more skin lesions than gilts is assumed to be due to the sows’ strong need to establish a clear hierarchy. The fact that pigs fought more in new group constellations agrees with previous research and is assumed to be due to the pigs' need to establish a new hierarchy. The purpose of this bachelor thesis was to determine the variation of skin lesions in group-housed gilts and sows in conventional pig production in Sweden. Group housing of gilts and sows, and different methods for measuring their welfare are very relevant from several perspectives, including societal, sustainability, and ethical perspectives
Temperaturberoende putsningsbeteende hos sillgrisslor Uria aalge
Get PDFAs global temperature increase, new thermal conditions may challenge the physiological limits of endotherms. Examining the direct effects of extreme temperatures is an important component in understanding how these physiological limits may impact an organism’s behaviour, breeding success and survival. Breeding at high latitude, with nest sites exposed to the changing weather of the summer months, makes the common guillemot Uria aalge a good model to examine how these changing thermal conditions may impact an organism’s behaviour. In this study, I examined the amount of time spent on two different preening behaviours, self-preening and allopreening, in relation to increasing air temperatures and sun exposure using video footage from a breeding colony of common guillemots in the Baltic Sea. Both preening behaviours function as ectoparasite control in addition to allopreening that may also have an important role in social interactions between neighbours and partners. The results demonstrate a negative relationship between increasing air temperatures and the amount of time birds spent on self-preening in sun exposed conditions. Additionally, birds spent less time on allopreening as temperature increase at intermediate sun exposure. These results illustrate a possible trade-off between the regulation of internal body temperature and preening behaviour in common guillemots. This re-allocation of time and energy away from preening could ultimately affect the social dynamics and health of the colony in addition to the quality of parental care as the birds spend more time and energy on maintaining thermal homeostasis as temperature and sun exposure increase
Drivers and Barriers for Biochar Deployment in Swedish Agriculture : a Multi-Level Perspective on Sustainability Transitions
Get PDFThere are several sustainability challenges (e.g., environmental degradation, biodiversity loss, and food insecurity) that agro-food systems face. Simultaneously, agriculture is a major contributor to greenhouse gas emissions. Addressing these challenges requires socio-technical transformations in the agro-food system. Biochar can play a part in the solution because it is a carbon removal method with co-benefits for agriculture. Despite the goal of the Swedish government to achieve net-zero emissions by 2045, biochar has not been adopted widely in Swedish agriculture. Therefore, this study aims to investigate the drivers and barriers that facilitate or hinder biochar deployment in Swedish agriculture, and under what prerequisites an accelerated adoption can take place.
The study used a qualitative case study method. The data was collected through 9 semi-structured interviews and participation in a webinar. The data was analyzed with the use of thematic analysis. The multi-level perspective framework on sustainability transitions has been applied to interpret the empirical findings.
The results suggest that biochar holds promise to contribute to sustainable agriculture in Sweden, but that there are certain barriers that need to be overcome. Regarding drivers, biochar offers various agricultural and environmental benefits. The Swedish government’s goal to reduce greenhouse gas emissions from agriculture further supports its deployment. However, there are barriers that hinder the widespread adoption of biochar. The high cost of biochar, along with volatility in biochar and carbon credit price makes it risky for farmers to invest in biochar technology. Financial incentives are essential to make biochar more affordable and attractive for on-farm use. The creation of a stable and farmer-friendly carbon market is crucial to reduce fluctuations in price and ensure economic viability for farmers. Knowledge gaps also exist, highlighting the need for research funding, knowledge sharing, and collaboration among stakeholders and countries. Farmers and researchers should work together to bridge the gap between scientific findings and practical on-farm use of biochar to find its ultimate applications in agriculture. Competition with other carbon removal technologies poses additional barriers as well as perceived resistance from fertilizer companies expressed by a few stakeholders. Lack of supportive legislation for using waste materials and side streams as biomass sources and inadequate financial support for production plant investments also hinder the diffusion of biochar technology. Overcoming these barriers requires learning processes and collective efforts to establish a sustainable and economically viable biochar market that benefits Swedish agriculture and contributes to the government’s environmental goals. The results of this study can be utilized to guide policy-makers and biochar stakeholders on how to enable increased biochar adoption in Swedish agriculture
Mapping the pig value chain in the Dominican Republic with emphasis on the risk of transmission of African swine fever
Get PDFAs in many other parts of the world, pigs provide an important source of food and income in the Dominican Republic (DR). However, the pig production in the country faces great challenges since African swine fever (ASF) was reintroduced in 2021, after being absent for over 40 years.
ASF causes a severe hemorrhagic fever with high lethality in domestic pigs Sus scrofa domesticus) and European wild boars (Sus scrofa). ASF outbreaks are often associated with human activities and movement of pigs. Today no comprehensive overview is available for the pig production, including the movement of pigs, in DR. Therefore, this study aims to map the pork value chain to increase the know-ledge and understanding about how pigs and pork products move within the country. The study consisted of individual and group interviews at five different locations, mainly in the central and eastern parts of the country.
The results show that many different actors are involved in an intricate system which forms the pork value chain. Many farmers breed their own pigs and sell them to other actors such as slaughterhouses, markets, and middlemen. This often results in pigs travelling into other areas of the country and due to lack of animal identification it is hard to trace pigs and pork back to the origin. In case of an outbreak of ASF many actors seem to hesitate before contacting the authorities which may make the mapping of diseases such as ASF difficult
Effekten av olika sidoströmmar av foder på Tenebrio molitors tillväxt i en industriell miljö
Get PDFDue to an increasing need for high-quality protein around the world, eyes are turning towards alternative methods of farming, such as insect farms. As insects can eat what humans cannot, e.g. food by-products, they can be a part of sustainable food systems. In this thesis I experimentally test food by-products on growth rates as well as maturation rates on one of the most reared insects species, the mealworm Tenebrio molitor. I experimentally reared T. molitor on four different types of feed while controlling other environmental variables. The feed used was gluten free crispbread, spent brewers’ grain, a combination of the two, and wheat bran, all of which are considered by-products. This means they are usually considered “waste” and brought to either a landfill or to a biogas plant, usually at a cost for the producing company. My study showed that larval growth rate increased when fed with gluten free crispbread (average weight 0.1g per larvae after 10 weeks) as well as larvae fed with gluten free crispbread in combination with spent brewers’ grain (0.09g per larvae after 10 weeks) compared to individuals fed only spent brewers’ grain or wheat bran and water. Feeding larvae with only spent brewers’ grain (0.07g per larvae) or wheat bran combined with water (0.05g per larvae) also make T. molitor grow, but not as rapidly as with the other two feeds. I performed a follow-up test on the maturation rate of larvae to pupae to adult and I found indications that gluten free crispbread combined with spent brewers’ grain as well as only feeding spent brewers’ grain had a faster pupation rate but it is difficult to justify this with very few sampling points. These indications are noteworthy however as it differs from normal larvae-larvae morphosis, requiring further analysis on what amino-acid combinations are required for pupation and emergence as adults It is positive that all by-products nurtured growth and development of the species and because of this, the study shows the possibilities of by-products as an investment into insect rearing. If companies want to make a real impact I think they need to focus on breeding insects as sustainable as possible. A perfect way to do this is by looking into agricultural by-products that are otherwise considered waste and using it as high-quality feed for insects. After reading all the sources for this paper it is my firm belief that this is an industry that will only grow stronger in the future and if we are to feed the growing population on earth it is essential that this is done in a sustainable way
Common Guillemots Uria aalge Alter Trip Patterns During Breeding
Get PDFSeabirds are facing immense pressures, primarily induced by competition with commercial fisheries; this is of considerable concern due to the critical role that they play in marine food webs and their invaluable function as bioindicators. In this thesis, I studied the temporal change in trip duration for the Common Guillemot Uria aalge, a circum-arctic seabird species. Pre-recorded video footage that focused on a group of guillemot pairs residing on the Swedish island of Stora Karlsö during the 2021 breeding season served as the basis for this study. Five pairs were observed from egg-laying in May to chick-fledging in July. I hypothesized that there would be distinct shifts in trip duration and frequency following egg hatching, compared to egg incubation. Moreover, I investigated the possible development of a Storer Ashmole’s Halo around the breeding colony; this would likely be evident due to an increase in trip duration as the season progressed and fish stocks near the colony progressively depleted. I found a significant increase in trip frequency following egg hatching. However, total time spent away from the nest did not appear to change; individual trips were, therefore, shorter once the chicks had hatched. The quantity of fish delivered to the chick fluctuated but did not show a clear correlation with chick age, or seasonal effects. Furthermore, the size of the fish delivered to the nest remained relatively stable throughout the breeding season. The results indicate that a Storer Ashmole’s Halo most likely does not develop around the Stora Karlsö breeding colony; however, more research surrounding the topic is ultimately needed. The data that I collected allows for the investigation of potential variations in feeding rates leading up to chick fledging