| 1. |
- Cintas Sanchez, Olivia, 1982, et al.
(författare)
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The potential role of forest management in Swedish scenarios towards climate neutrality by mid century
- 2017
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Ingår i: Forest Ecology and Management. - : Elsevier BV. - 0378-1127 .- 1872-7042. ; 383:January, s. 73-84
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Tidskriftsartikel (refereegranskat)abstract
- Swedish climate policy targets net zero greenhouse gases (GHG) by mid-century, with road transport independent of fossil fuels by 2030, requiring far-reaching changes in the way energy is used. Forest management is expected to support carbon sequestration and provide biomass for various uses, including energy. In this paper, we combine two energy scenarios with four forest scenarios and quantify GHG balances associated with energy-use for heat, electricity, and road transport, and with forest management and production, use, and end-of-life management of various forest products, including products for export. The aggregated GHG balances are evaluated in relation to the 2-degree target and an allocated Swedish CO2 budget. The production of biofuels in the agriculture sector is considered but not analyzed in detail.The results suggest that Swedish forestry can make an important contribution by supplying forest fuels and other products while maintaining or enhancing carbon storage in vegetation, soils, and forest products. The GHG neutrality goal is not met in any of the scenarios without factoring in carbon sequestration. Measures to enhance forest productivity can increase output of forest products (including biofuels for export) and also enhance carbon sequestration. The Swedish forest sector can let Sweden reach net negative emissions, and avoid “using up” its allocated CO2 budget, thereby increasing the associated emissions space for the rest of the world.
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| 2. |
- Priebe, Gisela, et al.
(författare)
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Sexual abuse and associations with psychosocial aspects of health : A population-based study with Swedish adolescents
- 2010
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Ingår i: Nordic Journal of Psychiatry. - : Taylor & Francis. - 0803-9488 .- 1502-4725. ; 64:1, s. 40-48
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Tidskriftsartikel (refereegranskat)abstract
- Background: Few population-based Nordic studies with adolescents investigate the associations between sexual abuse (SA) and psychosocial health. Aim: Associations between adolescents' self-reported experiences of SA different severity and aspects of psychosocial health such as emotional and behavioral problems, sense of coherence and self-esteem were investigated. Methods: A school-based study with 1107 Swedish high school seniors was conducted. The students completed the Strengths and Difficulties Questionnaire (SDQ), the Sense of Coherence Scale (SOC), I think I am and a self-report survey that included questions about SA, socio-demographic variables and family variables. Results: SA was related to more emotional and behavioral problems, weaker SOC and lower self- esteem when compared with non-abuse. There was also a dose-response effect insofar as more severe abuse was related to poorer psychosocial health. When adjusted for socio-demographic and family-related variables, the associations between penetrating SA and most of the health variables weakened or disappeared. SOC was associated with penetrating SA even after adjustment. Conclusions: This population-based study suggests that SA should not be regarded as an isolated factor in relation to psychosocial health as the associations at a group level may be smaller than expected. Among a number of covariates, family variables such as parental bonding showed to be especially important. Sense of Coherence may be of special interest in further research and clinical treatment.
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| 3. |
- Schiebe, Christian, et al.
(författare)
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Inducibility of chemical defenses in Norway spruce bark is correlated with unsuccessful mass attacks by the spruce bark beetle
- 2012
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Ingår i: Oecologia. - : Springer Science and Business Media LLC. - 0029-8549 .- 1432-1939. ; 170:1, s. 183-198
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Tidskriftsartikel (refereegranskat)abstract
- Secondary attraction to aggregation pheromones plays a central role in the host colonization behavior of the European spruce bark beetle Ips typographus. However, it is largely unknown how the beetles pioneering an attack locate suitable host trees, and eventually accept or reject them. To find possible biomarkers for host choice by I. typographus, we analyzed the chemistry of 58 Norway spruce (Picea abies) trees that were subsequently either (1) successfully attacked and killed, (2) unsuccessfully attacked, or (3) left unattacked. The trees were sampled before the main beetle flight in a natural Norway spruce-dominated forest. No pheromones were used to attract beetles to the experimental trees. To test the trees' defense potential, each tree was treated in a local area with the defense hormone methyl jasmonate (MeJ), and treated and untreated bark were analyzed for 66 different compounds, including terpenes, phenolics and alkaloids. The chemistry of MeJ-treated bark correlated strongly with the success of I. typographus attack, revealing major chemical differences between killed trees and unsuccessfully attacked trees. Surviving trees produced significantly higher amounts of most of the 39 analyzed mono-, sesqui-, and diterpenes and of 4 of 20 phenolics. Alkaloids showed no clear pattern. Differences in untreated bark were less pronounced, where only 1,8-cineole and (-)-limonene were significantly higher in unsuccessfully attacked trees. Our results show that the potential of individual P. abies trees for inducing defense compounds upon I. typographus attack may partly determine tree resistance to this bark beetle by inhibiting its mass attack.
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