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Jägerbrand, Annika, Associate ProfessorORCID iD iconorcid.org/0000-0001-5322-9827
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Publications (10 of 85) Show all publications
Wänström Lindh, U. & Jägerbrand, A. K. (2021). Impact of qualitative and quantitative methods on the evaluation of street lighting uniformity. In: Proceedings of the Conference CIE 2021: . Paper presented at CIE 2021, September 27–29, 2021 (pp. 413-422).
Open this publication in new window or tab >>Impact of qualitative and quantitative methods on the evaluation of street lighting uniformity
2021 (English)In: Proceedings of the Conference CIE 2021, 2021, p. 413-422Conference paper, Published paper (Refereed)
Abstract [en]

Uniformity of lighting for pedestrians is often assumed to have been achieved in mixed traffic environments when the lighting uniformity requirements for vehicular traffic have been fulfilled. Uniformity of lighting for drivers is commonly evaluated based on quantitative data on parameters such as overall luminance uniformity. However, methods for evaluating uniformity from the perspective of other road users are currently somewhat lacking. This study discusses qualitative and quantitative methods of assessing street lighting uniformity, and the potential implications for lighting design and the road users. We used convergence design and imbedded design based on two field studies. The research purpose is twofold: first, to study if, and how, measured lighting uniformity corresponds with visual perception. Secondly, to identify and explain the additional value that a combined method approach can contribute. The study considers examples of when the measured uniformity corresponds to visually perceived uniformity and when they do not correspond.

Keywords
Urban lighting, Uniformity, Pedestrians, Visual perception, Qualitative methods, Quantitative methods, Field studies
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:hj:diva-55203 (URN)10.25039/x48.2021.OP53 (DOI)
Conference
CIE 2021, September 27–29, 2021
Note

Conference held online.

Available from: 2021-12-01 Created: 2021-12-01 Last updated: 2022-03-23Bibliographically approved
Wänström Lindh, U. & Jägerbrand, A. K. (2021). Perceived Lighting Uniformity on Pedestrian Roads: From an Architectural Perspective. Energies, 14(12), Article ID 3647.
Open this publication in new window or tab >>Perceived Lighting Uniformity on Pedestrian Roads: From an Architectural Perspective
2021 (English)In: Energies, E-ISSN 1996-1073, Vol. 14, no 12, article id 3647Article in journal (Refereed) Published
Abstract [en]

Lighting uniformity is a key factor in traffic safety, and it could even result in energy savings for light installations. However, highly uniform horizontal road lighting for motorized vehicles may not be optimal for pedestrian roads. Therefore, it is important to evaluate the way in which pedestrians experience road lighting uniformity. Accordingly, we employed a qualitative approach to examine pedestrian road lighting uniformity. Visual analyses were used to exemplify and discuss the perceived uniformity. The case studies were performed on three pedestrian roads with similar light installations. The results show that the experience of road lighting uniformity differs substantially between the three roads. Based on the case studies, there are many aspects that need to be considered beyond the light falling on the horizontal surfaces. This study suggests that the visual experience of road lighting uniformity for pedestrians is difficult to estimate with photometric values because the visual impact of uniformity is highly influenced by the spatial context and landscape.

Place, publisher, year, edition, pages
MDPI, 2021
Keywords
lighting, uniformity, light distribution, pedestrian, road lighting, street lighting, urban space, exterior lighting, architectural lighting, qualitative method
National Category
Architectural Engineering
Identifiers
urn:nbn:se:hj:diva-53467 (URN)10.3390/en14123647 (DOI)000666154300001 ()2-s2.0-85108897973 (Scopus ID)GOA;;53467 (Local ID)GOA;;53467 (Archive number)GOA;;53467 (OAI)
Funder
Bertil & Britt Svenssons Stiftelse för Belysningsteknik, 2018 höst ‐11/184082
Note

This article belongs to the Special Issue: Research in Several Aspects of Outdoor Lighting: Energy, Sustainability, Safety, and Visual Perception.

Available from: 2021-06-21 Created: 2021-06-21 Last updated: 2023-08-28Bibliographically approved
Gren, I.-M., Brutemark, A., Jägerbrand, A. K. & Svedén, J. B. (2020). Costs of air pollutants from shipping: a meta-regression analysis. Transport reviews, 40(4), 411-428
Open this publication in new window or tab >>Costs of air pollutants from shipping: a meta-regression analysis
2020 (English)In: Transport reviews, ISSN 0144-1647, E-ISSN 1464-5327, Vol. 40, no 4, p. 411-428Article in journal (Refereed) Published
Abstract [en]

This study estimated the external cost of air pollution from shipping by means of a meta-regression analysis, which has not been made before. Three pollutants, which were included in most of the primary studies, were considered: nitrogen oxides (NOx), sulphur dioxides (SO2) and particulate matters with a diameter of max 2.5 micrometres (PM2.5). All primary studies included damages of health and a majority added impacts on agriculture and estimated the cost of air pollutants by transferring cost estimates from studies on costs of air emissions from transports in Europe. Different regression models and estimators were used and robust results were found of statistically significant emission elasticities of below one, i.e. total external costs increase by less than 1% when emissions increase by 1%. There was a small variation between the pollutants, with the highest elasticity for PM2.5 and lowest for NOx. Calculations of the marginal external cost of the pollutants showed the same pattern, with this cost being approximately six times higher for PM2.5 than for the other pollutants. Common to all pollutants was that the marginal external cost decreases when emission increases. Another robust result was a significant increase in the cost of studies published in journals compared with other publication outlets. These findings point out some caution when transferring constant external unit cost of air pollutant from shipping, which is much applied in the literature, and the cost functions estimated in this study could thus provide a complementary transfer mechanism.

Place, publisher, year, edition, pages
Taylor & Francis, 2020
Keywords
air pollution, costs, meta-regression analysis, Shipping
National Category
Other Environmental Engineering Infrastructure Engineering
Identifiers
urn:nbn:se:hj:diva-47840 (URN)10.1080/01441647.2020.1723733 (DOI)000512923300001 ()2-s2.0-85079046310 (Scopus ID)HOA JTH 2020 (Local ID)HOA JTH 2020 (Archive number)HOA JTH 2020 (OAI)
Available from: 2020-02-19 Created: 2020-02-19 Last updated: 2021-01-11Bibliographically approved
Jägerbrand, A. K. (2020). Synergies and Trade-offs between sustainable development and energy performance of exterior lighting. Energies, 13(9), Article ID 2245.
Open this publication in new window or tab >>Synergies and Trade-offs between sustainable development and energy performance of exterior lighting
2020 (English)In: Energies, E-ISSN 1996-1073, Vol. 13, no 9, article id 2245Article in journal (Refereed) Published
Abstract [en]

The aim of this review was tomap synergies and trade-offs between sustainable development and energy efficiency and savings regarding exterior lighting. Exterior lighting, such as public road and street lighting, requires significant amounts of energy and hinders sustainable development through its increasing of light pollution, ecological impact, and global climate change. Interlinkages between indicators in sustainability and energy that have positive interactions will lead to a mutual reinforcement in the decision-making process, and vice versa, interlinkages between trade-offs may lead to unwanted and conflicting effects. Very few studies have presented a clear vision of how exterior lighting should be contributing to, and not counteracting, the sustainable development of our planet. This study was conducted through a theoretical and systematic analysis that examined the interactions between sustainable development and energy performance based on a framework using indicators and variables, and by reviewing the current literature. Additionally, 17 indicators of energy efficiency and energy savings were identified and used in the analysis. Most interactions between variables for sustainable development and energy performance (52%) were found to be synergistic. The synergistic interactions were mostly found (71%) in the ecological and environmental dimension showing that environmental and ecological sustainability goes hand in hand with energy efficiency and savings. Trade-offs were found only in the economic and social dimensions accounting for 18% of the interactions identified. This review shows that the interactions between sustainable development and energy performance can be used to establish more efficient policies for decision-making processes regarding exterior lighting.

Place, publisher, year, edition, pages
MDPI, 2020
Keywords
Artificial lighting, Ecological, Economic, Environment, Human health, Legislation, Outdoor, Policy, Road lighting, Social, Street lighting, Sustainable development, Traffic safety, Climate change, Commerce, Concrete pavements, Decision making, Economic and social effects, Energy efficiency, Lighting, Planning, Pollution, Decision making process, Ecological sustainability, Energy efficiency and energy savings, Global climate changes, Mutual reinforcement, Positive interaction, Synergistic interaction, Systematic analysis
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:hj:diva-49317 (URN)10.3390/en13092245 (DOI)000535739300123 ()2-s2.0-85084281347 (Scopus ID)GOA HHJ 2020 (Local ID)GOA HHJ 2020 (Archive number)GOA HHJ 2020 (OAI)
Funder
Swedish Energy Agency, 45219-1
Available from: 2020-06-15 Created: 2020-06-15 Last updated: 2023-08-28Bibliographically approved
Jägerbrand, A. K., Brutemark, A., Barthel Svedén, J. & Gren, I.-M. -. (2019). A review on the environmental impacts of shipping on aquatic and nearshore ecosystems. Science of the Total Environment, 695, Article ID 133637.
Open this publication in new window or tab >>A review on the environmental impacts of shipping on aquatic and nearshore ecosystems
2019 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 695, article id 133637Article, review/survey (Refereed) Published
Abstract [en]

There are several environmental and ecological effects of shipping. However, these are rarely assessed in total in the scientific literature. Thus, the aim of this study was to summarize the different impacts of water-based transport on aquatic and nearshore ecosystems and to identify knowledge gaps and areas for future research. The review identified several environmental and ecological consequences within the main impact categories of water discharges, physical impacts, and air emissions. However, although quantitative data on these consequences are generally scarce the shipping contribution to acidification by SOx- and NOx-emissions has been quantified to some extent. There are several knowledge gaps regarding the ecological consequences of, for example, the increasing amount of chemicals transported on water, the spread of non-indigenous species coupled with climate change, and physical impacts such as shipping noise and artificial light. The whole plethora of environmental consequences, as well as potential synergistic effects, should be seriously considered in transport planning.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Antifouling paints, Cargo spills, Marine litter, Operational discharges, Shoreline erosion, Wastewater, Antifouling paint, Aquatic ecosystems, Climate change, Ships, Shore protection, Ecological consequences, Environmental consequences, Nonindigenous species, Scientific literature, Synergistic effect, Transport planning, Environmental impact
National Category
Environmental Sciences
Identifiers
urn:nbn:se:hj:diva-46367 (URN)10.1016/j.scitotenv.2019.133637 (DOI)000496802200048 ()31422318 (PubMedID)2-s2.0-85070631703 (Scopus ID)
Available from: 2019-09-26 Created: 2019-09-26 Last updated: 2019-12-18Bibliographically approved
Gren, I. M. & Jägerbrand, A. K. (2019). Calculating the costs of animal-vehicle accidents involving ungulate in Sweden. Transportation Research Part D: Transport and Environment, 70, 112-122
Open this publication in new window or tab >>Calculating the costs of animal-vehicle accidents involving ungulate in Sweden
2019 (English)In: Transportation Research Part D: Transport and Environment, ISSN 1361-9209, E-ISSN 1879-2340, Vol. 70, p. 112-122Article in journal (Refereed) Published
Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Animalia, Ungulata
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:hj:diva-43546 (URN)10.1016/j.trd.2019.03.008 (DOI)000467516600008 ()2-s2.0-85063893724 (Scopus ID)
Funder
Swedish Transport Administration
Available from: 2019-04-26 Created: 2019-04-26 Last updated: 2019-06-03Bibliographically approved
Jägerbrand, A. K. (2019). Effects of LED lighting on animals and in the natural environment and recommendations to minimize the impact. In: Proceedings of the 8th Professional Lighting Design Convention, Rotterdam, the Netherlands, 23-26 October 2019: . Paper presented at 8th Professional Lighting Design Convention, Rotterdam, the Netherlands, 23-26 October 2019 (pp. 98-99).
Open this publication in new window or tab >>Effects of LED lighting on animals and in the natural environment and recommendations to minimize the impact
2019 (English)In: Proceedings of the 8th Professional Lighting Design Convention, Rotterdam, the Netherlands, 23-26 October 2019, 2019, p. 98-99Conference paper, Oral presentation with published abstract (Refereed)
National Category
Architectural Engineering Ecology
Identifiers
urn:nbn:se:hj:diva-46792 (URN)
Conference
8th Professional Lighting Design Convention, Rotterdam, the Netherlands, 23-26 October 2019
Available from: 2019-11-08 Created: 2019-11-08 Last updated: 2019-11-08Bibliographically approved
Jägerbrand, A. K. (2019). Evaluation between energy efficiency, ecological impactand the compliance of regulations of road lighting. In: Proceedings of the 29th Session of the CIE: Washington D.C., USA, June 14 – 22, 2019, Volume 1 – Part 2. Paper presented at 29th Session of the CIE, Washington D.C., USA, June 14 – 22, 2019 (pp. 1720-1728). Vienna: The International Commission on Illumination, 1
Open this publication in new window or tab >>Evaluation between energy efficiency, ecological impactand the compliance of regulations of road lighting
2019 (English)In: Proceedings of the 29th Session of the CIE: Washington D.C., USA, June 14 – 22, 2019, Volume 1 – Part 2, Vienna: The International Commission on Illumination, 2019, Vol. 1, p. 1720-1728Conference paper, Published paper (Refereed)
Abstract [en]

Road lighting causes unwanted ecological impact on species and habitats where species may be protected and/or light-sensitive. Yet, there is very little information available on how roadlighting should be ecologically designed while simultaneously considering energy efficiency and the regulations needed for safety reasons. The aim of this study was study designs of different dimensions regarding energy efficiency, ecological impact and the compliance with regulations for traffic safety. By using DIALux evo simulations with four different LED luminaires, different scenarios of road lighting designs (pole distance of 10m, 25m and 40m, and pole heights of 3m, 5m, and 8m) on a 7m wide road was evaluated. Ecological thresholds of 1 lux and 0.1 lux are possible to get below at distances from the road edge between 5–11m, and 8.5–20m, respectively. Results are discussed from the perspectives of increased demand on energy efficiency on road lighting.

Place, publisher, year, edition, pages
Vienna: The International Commission on Illumination, 2019
Keywords
luminance, uniformity, TI, DIALux evo, pole height, pole distance
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:hj:diva-45151 (URN)10.25039/x46.2019.PO176 (DOI)978-3-902842-74-9 (ISBN)
Conference
29th Session of the CIE, Washington D.C., USA, June 14 – 22, 2019
Available from: 2019-06-27 Created: 2019-06-27 Last updated: 2020-02-13Bibliographically approved
Komatsu, K. J., Avolio, M. L., Lemoine, N. P., Isbell, F., Grman, E., Houseman, G. R., . . . Zhang, Y. (2019). Global change effects on plant communities are magnified by time and the number of global change factors imposed. Proceedings of the National Academy of Sciences of the United States of America, 116(36), 17867-17873
Open this publication in new window or tab >>Global change effects on plant communities are magnified by time and the number of global change factors imposed
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2019 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 116, no 36, p. 17867-17873Article in journal (Refereed) Published
Abstract [en]

Accurate prediction of community responses to global change drivers (GCDs) is critical given the effects of biodiversity on ecosystem services. There is consensus that human activities are driving species extinctions at the global scale, but debate remains over whether GCDs are systematically altering local communities worldwide. Across 105 experiments that included over 400 experimental manipulations, we found evidence for a lagged response of herbaceous plant communities to GCDs caused by shifts in the identities and relative abundances of species, often without a corresponding difference in species richness. These results provide evidence that community responses are pervasive across a wide variety of GCDs on long-term temporal scales and that these responses increase in strength when multiple GCDs are simultaneously imposed.Global change drivers (GCDs) are expected to alter community structure and consequently, the services that ecosystems provide. Yet, few experimental investigations have examined effects of GCDs on plant community structure across multiple ecosystem types, and those that do exist present conflicting patterns. In an unprecedented global synthesis of over 100 experiments that manipulated factors linked to GCDs, we show that herbaceous plant community responses depend on experimental manipulation length and number of factors manipulated. We found that plant communities are fairly resistant to experimentally manipulated GCDs in the short term (<10 y). In contrast, long-term (≥10 y) experiments show increasing community divergence of treatments from control conditions. Surprisingly, these community responses occurred with similar frequency across the GCD types manipulated in our database. However, community responses were more common when 3 or more GCDs were simultaneously manipulated, suggesting the emergence of additive or synergistic effects of multiple drivers, particularly over long time periods. In half of the cases, GCD manipulations caused a difference in community composition without a corresponding species richness difference, indicating that species reordering or replacement is an important mechanism of community responses to GCDs and should be given greater consideration when examining consequences of GCDs for the biodiversity–ecosystem function relationship. Human activities are currently driving unparalleled global changes worldwide. Our analyses provide the most comprehensive evidence to date that these human activities may have widespread impacts on plant community composition globally, which will increase in frequency over time and be greater in areas where communities face multiple GCDs simultaneously.

Place, publisher, year, edition, pages
National Academy of Sciences, 2019
Keywords
community composition; global change experiments; herbaceous plants; species richness
National Category
Infrastructure Engineering Environmental Management
Identifiers
urn:nbn:se:hj:diva-45635 (URN)10.1073/pnas.1819027116 (DOI)000485140300046 ()2-s2.0-85071788647 (Scopus ID);JTHByggnadsteknikIS (Local ID);JTHByggnadsteknikIS (Archive number);JTHByggnadsteknikIS (OAI)
Available from: 2019-08-21 Created: 2019-08-21 Last updated: 2025-02-10Bibliographically approved
Idoia Biurrun, I., Burrascano, S., Dembicz, I., Guarino, R., Kapfer, J., Pielech, R., . . . Dengler, J. (2019). GrassPlot v. 2.00 – first update on the database of multi-scale plant diversity in Palaearctic grasslands. Palaearctic Grasslands (44), 26-47
Open this publication in new window or tab >>GrassPlot v. 2.00 – first update on the database of multi-scale plant diversity in Palaearctic grasslands
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2019 (English)In: Palaearctic Grasslands, ISSN 2627-9827, no 44, p. 26-47Article in journal (Refereed) Published
Abstract [en]

GrassPlot is a collaborative vegetation-plot database organised by the Eurasian Dry Grassland Group (EDGG) and listed in the Global Index of Vegetation-Plot Databases (GIVD ID EU-00-003). Following a previous Long Database Report (Dengler et al. 2018, Phytocoenologia 48, 331–347), we provide here the first update on content and functionality of GrassPlot. The current version (GrassPlot v. 2.00) contains a total of 190,673 plots of different grain sizes across 28,171 independent plots, with 4,654 nested-plot series including at least four grain sizes. The database has improved its content as well as its functionality, including addition and harmonization of header data (land use, information on nestedness, structure and ecology) and preparation of species composition data. Currently, GrassPlot data are intensively used for broad-scale analyses of different aspects of alpha and beta diversity in grassland ecosystems.

Place, publisher, year, edition, pages
Eurasian Dry Grassland Group (EDGG), 2019
Keywords
biodiversity; community ecology; Eurasian Dry Grassland Group (EDGG); Global Index of Vegetation-Plot Databases (GIVD); grassland vegetation; GrassPlot; macroecology; nested plot; Palaearctic; scale dependence; species-area relationship (SAR); vegetationplot database
National Category
Environmental Sciences
Identifiers
urn:nbn:se:hj:diva-47736 (URN)POA JTH 2019;JTHByggnadsteknikIS (Local ID)POA JTH 2019;JTHByggnadsteknikIS (Archive number)POA JTH 2019;JTHByggnadsteknikIS (OAI)
Available from: 2020-02-05 Created: 2020-02-05 Last updated: 2020-02-05Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0001-5322-9827

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