| 1. |
- Pečnerová, Patrícia, et al.
(författare)
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Population genomics of the muskox' resilience in the near absence of genetic variation
- 2024
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Ingår i: Molecular Ecology. - 0962-1083 .- 1365-294X. ; 33:2
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Tidskriftsartikel (refereegranskat)abstract
- Genomic studies of species threatened by extinction are providing crucial information about evolutionary mechanisms and genetic consequences of population declines and bottlenecks. However, to understand how species avoid the extinction vortex, insights can be drawn by studying species that thrive despite past declines. Here, we studied the population genomics of the muskox (Ovibos moschatus), an Ice Age relict that was at the brink of extinction for thousands of years at the end of the Pleistocene yet appears to be thriving today. We analysed 108 whole genomes, including present-day individuals representing the current native range of both muskox subspecies, the white-faced and the barren-ground muskox (O. moschatus wardi and O. moschatus moschatus) and a ~21,000-year-old ancient individual from Siberia. We found that the muskox' demographic history was profoundly shaped by past climate changes and post-glacial re-colonizations. In particular, the white-faced muskox has the lowest genome-wide heterozygosity recorded in an ungulate. Yet, there is no evidence of inbreeding depression in native muskox populations. We hypothesize that this can be explained by the effect of long-term gradual population declines that allowed for purging of strongly deleterious mutations. This study provides insights into how species with a history of population bottlenecks, small population sizes and low genetic diversity survive against all odds.
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| 2. |
- Abbasi, Maisam, et al.
(författare)
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Themes and Challenges in Making Supply Chains Socially Sustainable
- 2014
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Ingår i: [Host publication title missing]. - 9788799743308 ; , s. 182-200
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Konferensbidrag (refereegranskat)abstract
- Purpose Purpose of this paper is to explore and classify pattern of the currently discussed themes and challenges in making supply chains socially sustainable. Design/methodology/approach The methodology was based on a systematic review of the existing literature in order to explore what major themes and challenges have been discussed as well as the significant gaps where opportunities for further research can be found. Findings In total five categories of themes were identified, namely goods/service-centric, humancentric, organization-centric, corporate-centric, and management/governance-centric. Challenges were classified into eight categories namely, inadequate and asymmetric knowledge, shifting the values, operationalization, subjectivity in evaluation, difficulties of SMEs, governance complexity,sustainability leakage, and sustainability washing. Research limitations/implications Focus of the paper is on social pillar of sustainable development in context of supply chains. A more holistic investigation of all the three pillars/ bottom lines of sustainable development (economic, environmental, and social) can be an opportunity for further research. Practical implications Taking a more holistic view of the pattern of currently discussed themes and challenges may be beneficial in increasing the absorptive capacity of industrial and business practitioners when they design and operationalize innovative strategies in developing sustainable supply chains. Originality/value This paper may increase awareness about the social responsibilities of supply chains actors and stakeholders. It may also guide managers, decision makers, and practitioners to better understand the difficulties, obstacles, or dilemmas that can hinder sustainable development of supply chains. The discussion section provides suggestions for tackling the challenges and a section that elaborates on opportunities for further research.
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| 3. |
- Abbasi, Maisam, et al.
(författare)
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Who controls logistics emissions? Challenges in making fragmented supply chains environmentally sustainable from a logistics service provider's perspective
- 2014
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Ingår i: Proceedings of the 26th Conference of the Nordic Logistics Research Network: NOFOMA 2014. - 9788799743308 ; , s. 201-218
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Konferensbidrag (refereegranskat)abstract
- Purpose The purpose of this article is to explore the environmental impact of Logistics Service Provider (LSP) activities in the light of increased customer attention and fragmentation of the industry. We try to answer the question, to what extent the LSPs can actually monitor the environmental impact of logistics activities in the supply chain? Design/methodology/approach The methodology of this paper is a literature review, a qualitative interview survey, and three case studies. A framework on sustainability challenges in supply chains derived from the literature is used to structure and analyze the findings. Findings Our findings reveal that despite ambitious environmental schemes communicated by several LSPs, LSPs exert very little control over the actual emissions created from their transport operations. Furthermore, it is clear from this study that any real interest in environmental solutions that impact the cost and time requirements from customers of logistics services are not yet a reality. Research limitations/implications This paper implies that LSP sustainability cannot be investigated in isolation if a company does not manage proprietary resources. Practical implications Our findings imply that environmental policies between different LSPs appear similar, but in practice differs, which stresses the importance of follow-up control by environmentally aware logistics service buyers. Originality/value This paper represents a novel approach as to how LSP environmental policies should be viewed.
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| 4. |
- Hultquist, Gunnar, et al.
(författare)
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Water Corrodes Copper
- 2009
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Ingår i: Catalysis Letters. - : Springer Science and Business Media LLC. - 1011-372X .- 1572-879X. ; 132:3-4, s. 311-316
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Tidskriftsartikel (refereegranskat)abstract
- According to a current concept, copper canisters of thickness 0.05 m will be safe for nuclear waste containment for 100,000 years. We show that more than 1 m copper thickness might be required for 100,000 years durability based on water exposures of copper for 20 h, 7 weeks, 15 years, and 333 years. An observed evolution of hydrogen which involves heterogeneous catalysis of molecular hydrogen, first principles simulations, thermodynamic considerations and corrosion product characterization provide further evidence that water corrodes copper resulting in the formation of a copper hydroxide. These findings cast additional doubt on copper for nuclear waste containment and other important applications.
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| 5. |
- Post, Eric, et al.
(författare)
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Ecological Dynamics Across the Arctic Associated with Recent Climate Change
- 2009
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Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 1095-9203 .- 0036-8075. ; 325:5946, s. 1355-1358
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Forskningsöversikt (refereegranskat)abstract
- At the close of the Fourth International Polar Year, we take stock of the ecological consequences of recent climate change in the Arctic, focusing on effects at population, community, and ecosystem scales. Despite the buffering effect of landscape heterogeneity, Arctic ecosystems and the trophic relationships that structure them have been severely perturbed. These rapid changes may be a bellwether of changes to come at lower latitudes and have the potential to affect ecosystem services related to natural resources, food production, climate regulation, and cultural integrity. We highlight areas of ecological research that deserve priority as the Arctic continues to warm.
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