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| 35. |
- Asplund, Maria. E., 1970, et al.
(författare)
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Dynamics and fate of blue carbon in a mangrove-seagrass seascape : influence of landscape configuration and land-use change
- 2021
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Ingår i: Landscape Ecology. - : Springer. - 0921-2973 .- 1572-9761. ; 36, s. 1489-1509
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Tidskriftsartikel (refereegranskat)abstract
- Context Seagrass meadows act as efficient natural carbon sinks by sequestering atmospheric CO2 and through trapping of allochthonous organic material, thereby preserving organic carbon (C-org) in their sediments. Less understood is the influence of landscape configuration and transformation (land-use change) on carbon sequestration dynamics in coastal seascapes across the land-sea interface. Objectives We explored the influence of landscape configuration and degradation of adjacent mangroves on the dynamics and fate of C-org in seagrass habitats. Methods Through predictive modelling, we assessed sedimentary C-org content, stocks and source composition in multiple seascapes (km-wide buffer zones) dominated by different seagrass communities in northwest Madagascar. The study area encompassed seagrass meadows adjacent to intact and deforested mangroves. Results The sedimentary C-org content was influenced by a combination of landscape metrics and inherent habitat plant- and sediment-properties. We found a strong land-to-sea gradient, likely driven by hydrodynamic forces, generating distinct patterns in sedimentary C-org levels in seagrass seascapes. There was higher C-org content and a mangrove signal in seagrass surface sediments closer to the deforested mangrove area, possibly due to an escalated export of C-org from deforested mangrove soils. Seascapes comprising large continuous seagrass meadows had higher sedimentary C-org levels in comparison to more diverse and patchy seascapes. Conclusion Our results emphasize the benefit to consider the influence of seascape configuration and connectivity to accurately assess C-org content in coastal habitats. Understanding spatial patterns of variability and what is driving the observed patterns is useful for identifying carbon sink hotspots and develop management prioritizations.
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| 36. |
- Asplund, Maria. E., 1970, et al.
(författare)
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Methane Emissions From Nordic Seagrass Meadow Sediments
- 2022
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Ingår i: Frontiers in Marine Science. - : Frontiers Media S.A.. - 2296-7745. ; 8
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Tidskriftsartikel (refereegranskat)abstract
- Shallow coastal soft bottoms are important carbon sinks. Submerged vegetation has been shown to sequester carbon, increase sedimentary organic carbon (C-org) and thus suppress greenhouse gas (GHG) emissions. The ongoing regression of seagrass cover in many areas of the world can therefore lead to accelerated emission of GHGs. In Nordic waters, seagrass meadows have a high capacity for carbon storage, with some areas being recognized as blue carbon hotspots. To what extent these carbon stocks lead to emission of methane (CH4) is not yet known. We investigated benthic CH4 emission (i.e., net release from the sediment) in relation to seagrass (i.e. Zostera marina) cover and sedimentary C-org content (%) during the warm summer period (when emissions are likely to be highest). Methane exchange was measured in situ with benthic chambers at nine sites distributed in three regions along a salinity gradient from similar to 6 in the Baltic Sea (Finland) to similar to 20 in Kattegat (Denmark) and similar to 26 in Skagerrak (Sweden). The net release of CH4 from seagrass sediments and adjacent unvegetated areas was generally low compared to other coastal habitats in the region (such as mussel banks and wetlands) and to other seagrass areas worldwide. The lowest net release was found in Finland. We found a positive relationship between CH4 net release and sedimentary C-org content in both seagrass meadows and unvegetated areas, whereas no clear relationship between seagrass cover and CH4 net release was observed. Overall, the data suggest that Nordic Zostera marina meadows release average levels of CH4 ranging from 0.3 to 3.0 mu g CH4 m(-2) h(-1), which is at least 12-78 times lower (CO2 equivalents) than their carbon accumulation rates previously estimated from seagrass meadows in the region, thereby not hampering their role as carbon sinks. Thus, the relatively weak CH4 emissions from Nordic Z. marina meadows will not outweigh their importance as carbon sinks under present environmental conditions.
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| 37. |
- Berg, Ulla B., et al.
(författare)
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New standardized cystatin C and creatinine GFR equations in children validated with inulin clearance
- 2015
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Ingår i: Pediatric Nephrology. - : Springer Science and Business Media LLC. - 1432-198X .- 0931-041X. ; 30:8, s. 1317-1326
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Tidskriftsartikel (refereegranskat)abstract
- This study compares glomerular filtration rate (GFR) equations in children based on standardized cystatin C (CYSC) and creatinine (CREA) and their combinations with renal clearance of inulin (C-inulin). A total of 220 children with different renal disorders were referred for C-inulin (median 84 ml/min/1.73 m(2)). Bias, precision (interquartile range, IQR), and accuracy (percentage of estimates +/- 30 % of C-inulin; P30) were evaluated for two cystatin C equations, CAPA(CYSC) and Berg(CYSC), for creatinine equations, Schwartz(CREA) and Gao(CREA), the arithmetic mean of CAPA(CYSC) and Schwartz(CREA) (MEAN(CAPA+Schwartz)), Berg(CYSC) and Schwartz(CREA) (MEAN(BERG+SCHWARTZ)) and the composite equation Chehade(CYSC+CREA). Overall results of CAPA(CYSC), Berg(CYSC), Schwartz(CREA), Gao(CREA), MEAN(CAPA+Schwartz,) MEAN(BERG+SCHWARTZ) and Chehade(CYSC+CREA) were: median bias -7.6/-4.9/-3.7/-2.3/-4.6/-4.0/-10.1 %, IQR 20.0/19.9/21.7/22.4/21.0/20.9/23.3 ml/min/1.73 m(2) and P30 86/86/80/83/89/91/83 %. The cystatin C equations, MEAN(CAPA+Schwartz) and MEAN(BERG+SCHWARTZ) had a more stable performance across subgroups compared with Schwartz(CREA), Gao(CREA) and Chehade(CYSC+CREA). Cystatin C was the preferred filtration marker for GFR estimation in children, while the benefit of combining cystatin C and creatinine deserves further investigations.
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| 38. |
- Berggren, Linda, et al.
(författare)
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Nordic children's conceptualizations of healthy eating in relation to school lunch
- 2017
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Ingår i: Health Education. - : Emerald Group Publishing Limited. - 0965-4283 .- 1758-714X. ; 117:2, s. 130-147
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: Pupils' perspective should be better taken into account when developing nutrition education at school. The purpose of this paper is to explore Nordic children's perspectives on the healthiness of meals in the context of school lunches.Design/methodology/approach: In total, 78 focus group discussions were conducted with 10-11-year-old girls and boys (n=457) from schools in Finland, Iceland, Norway and Sweden, which were participating in the Nordic school meal project ProMeal during the school year 2013-2014. A flexible discussion guide and stimulus material in the form of 14 photographs displaying different school lunch contexts were used. The discussions were analyzed using thematic analysis.Findings: These Nordic children seem to share the adult-set aim of healthy eating in the school context as a socio-cultural norm. Although healthy eating was constructed as a rational, normative and acceptable way to eat at school, unhealthy eating was emphasized as negotiably acceptable when eaten occasionally and under certain circumstances (e.g. at special occasions). Unhealthy eating also comprised emotionally laden descriptions such as enjoyment and disgust. Practical implications: Children's conceptualizations of healthy eating are connected to nutritional, socio-cultural, emotional and normative dimensions, which should be reflected also when developing nutrition education in school.Originality/value: The need for research exploring children's experiences of, and understandings about, school lunch motivated this unique multicenter study with a large number of participating children. In the focus groups a child-oriented, photo-elicitation method was used.
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| 39. |
- Berggren, Linda, et al.
(författare)
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Perspectives about health outcomes related to food among Nordic children
- 2016
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Konferensbidrag (refereegranskat)abstract
- Perspectives about health outcomes related to food among Nordic childrenLinda Berggren* 1, Sanna Talvia2, Eldbjørg Fossgard3, Unnur Björk Arnfjörð4, Agneta Hörnell 1, Anna Ólafsdóttir 4,Ingibjörg Gunnarsdóttir 5, Hege Wergedahl 3, Hanna Lagström 6, Maria Waling1, Cecilia Olsson11Umeå University, Department of food and nutrition, Umeå, Sweden, 2Child and Youth Research institute, Turku, Finland,3Faculty of Education, Bergen University College, Bergren, Norway, 4School of Education, University of Iceland, 5TheNational University Hospital of Iceland , Unit for Nutrition Research, Reykjavik, Iceland, 6University of Turku, TurkuInstitute of Child and Youth Research, Turku, FinlandPreferred presentation type: Only PosterBackground and aims: Dietary intake in school has previously been studied but little is known about Nordic children’sperspectives on food healthiness in the school lunch context. This study aims to explore 10-year-old Nordic children’sperspectives on outcomes of healthy eating in the school lunch context.Methods: Seventy-two focus groups were conducted in Sweden, Finland, Norway and Iceland with a total of 423participants. A flexible topic guide and 14 preselected photos displaying different school lunch contexts were used asstimuli material. Interviews were transcribed and analyzed using thematic analysis.Results: Children reasoned that school lunch are and should be healthy since the food eaten at school has short andlong term outcomes related to cognitive and physical health. It was commonly expressed that food eaten in school affectsschool work and functioning in learning activities. It was also stated that food eaten in school can have negative andpositive effects on your mood, e.g. eating unhealthy food or an insufficient amount of food, puts you in a bad mood whichcan affect the rest of the school day. The discussions mainly relied on negative short term effects such as feeling ill andreduced stamina. Some food and food groups such as vegetables, milk and fish, were mentioned in a more positivesense highlighting the positive short- and long term outcomes on health. When describing the long-term outcomes ofeating, children mentioned that healthy eating helps to build muscles, grow and prevent diseases, such as cancer anddiabetes. Sugar and fat was frequently mentioned as being the cause of overweight and some other diseases.Conclusion: In general, Nordic children have an adequate understanding of established relations between food andhealth. Yet, we know that many pupils do not eat according to recommendations. This highlights the importance of takingthe complexity of food choice into consideration in nutritional education.Disclosure of Interest: None to declare
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| 40. |
- Bergh, Ingrid, et al.
(författare)
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Sense of coherence over time for parents with a child diagnosed with cancer
- 2012
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Ingår i: BMC Pediatrics. - : BioMed Central. - 1471-2431 .- 1471-2431. ; 12
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Tidskriftsartikel (refereegranskat)abstract
- Background: When a child is diagnosed with childhood cancer this creates severe stress in the parents. The aim of the study was to describe the sense of coherence and its change over time in a sample of parents of children diagnosed with cancer.Methods: The Swedish version of SOC (29 items) was used to measure the parents’ (n = 29) sense of coherence. Data were collected at four time-points: Time-point 1 at the time of diagnosis; time-point 2 during the treatment; time-point 3 after the child had completed their treatment and time-point 4 when the child had been off treatment for some years or had died.Results: The results showed that SOC in the investigated population is not stable over time. The parents decreased in total SOC between time-points 1, 2 and 3. Mothers had significantlyweaker total SOC score including the components Manageability and Meaningfulness at time-points 1 as well time-point 2 compared to the fathers. However, for the component Comprehensibility no significant differences were shown between mothers and fathers. This study indicates that mothers’ and fathers’ SOC scores change over time during the child’s cancer trajectory. However, the pattern in these changes varies between mothers and fathers.Conclusions: This study indicates that mothers and fathers may have different support needs during their child’s cancer trajectory.
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