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| 2. |
- Cederling, Ulf, et al.
(författare)
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A Project Management Model Based on Shared Understanding
- 2000
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Ingår i: Proceedings of the 33rd Annual Hawaii International Conference on System Sciences, 2000. - : IEEE. - 0769504930
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Konferensbidrag (refereegranskat)abstract
- Traditionally in industrial system development, the total project is decomposed into phases. The result from one phase, normally a document or a system component, is passed to the phase(s) to follow. The deliverables from the "phases" are often prescribed in standards or corporate guidelines. This metaphor, where understanding is packaged into documents, has been a cornerstone for our educational systems as well as for organizing engineering or social development projects. It is assumed that the understanding once achieved by the author(s) of the document will be transferred to its reader(s). In three longitudinal case studies of industrial development projects, a new view has evolved. The analysis team develops a capability to answer questions occurring on the fly, rather than writing down answers to initially stated issues. Our aim is to define a model based upon developing and making available shared understanding. The paper presents a survey of the case studies. In a fourth project an embryo of the new system development model is being applied and evaluated.
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| 3. |
- Crumley, Carole L., et al.
(författare)
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Is There a Future for the Past?
- 2018
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Ingår i: Issues and Concepts in Historical Ecology. - : Cambridge University Press. - 9781108420983 - 9781108355780 ; , s. 1-9
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Konferensbidrag (refereegranskat)
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| 4. |
- Eckstein, Rolf Lutz, 1965-, et al.
(författare)
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Biological flora of Central Europe– Lupinus polyphyllus Lindley
- 2023
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Ingår i: Perspectives in plant ecology, evolution and systematics. - : Elsevier. - 1433-8319 .- 1618-0437. ; 58
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Tidskriftsartikel (refereegranskat)abstract
- The invasive herb Lupinus polyphyllus has been focus of a number of fact sheets worldwide but a comprehensive summary of the species’ taxonomy and morphology, distribution, habitat requirements, and biology has been lacking. This paper gives a thorough account of the species’ systematic position and taxonomy, highlighting the difficulties to delimit taxa, which is related to interbreeding among members of this genus. However, L. polyphyllus var. polyphyllus is apparently the taxon that has naturalized and is regionally invasive in temperate-humid climates worldwide. We also present an updated distribution map of L. polyphyllus in the native and invaded ranges, which highlights seven regions in the world where the species has been established. We show that the climatic niche of L. polyphyllus in the invaded range shifts towards higher summer precipitation and lower isothermality, probably because the invaded range includes subcontinental regions of eastern Europe and western Siberia. The habitats of L. polyphyllus range from rather dry to wet, have moderately acidic to strongly acidic soils, and the species’ indicator values across Europe suggest that it occurs along a gradient from very nutrient poor sites to intermediate to rich sites from northern to southern Europe. The species shows high resistance to both drought and frost. In Central Europe, the species has a stronghold in alpic mountain hay meadows, abandoned meadows and pastures, low and medium altitude hay meadows, anthropogenic herb stands and temperate thickets and scrubs. In northern Europe, the species occurs in anthropogenic herb stands along roads and railroads as well as in abandoned pastures and fields. We also found some doubtful information about L. polyphyllus in the literature. This refers to its description as “rhizomatous perennial” although it lacks rhizomes; an apparently very high longevity of its seeds, which may only be true under artificial conditions in an ex situ seed repository; and a very deep rooting depth, which may not represent the average rooting depth but rather an extreme value. Knowledge about the interrelationships between the species’ future population dynamics and spread and ongoing climate warming is lacking. Finally, our review points out that there is currently no evidence-based strategy for a cost-efficient management of L. polyphyllus although it is among the most problematic non-native plant species in Europe due to its environmental and socio-economic impacts.
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| 5. |
- Eriksson, Ove, 1956-, et al.
(författare)
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Concepts for Integrated Research in Historical Ecology
- 2018
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Ingår i: Issues and Concepts in Historical Ecology: ThePast and Future of Landscapes and regions. - Cambridge : Cambridge University Press. - 9781108420983 - 9781108355780 ; , s. 145-181
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Bokkapitel (refereegranskat)
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| 6. |
- Eriksson, Ove, et al.
(författare)
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Historic hay cutting dates from Sweden 1873-1951 and their implications for conservation management of species-rich meadows
- 2015
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Ingår i: Biological Conservation. - : Elsevier BV. - 0006-3207 .- 1873-2917. ; 184, s. 100-107
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Tidskriftsartikel (refereegranskat)abstract
- Semi-natural hay meadows are species rich habitats, formed by a long history of management and they have experienced a drastic decline all over Europe. There is a vast literature on conservation and species diversity of semi-natural hay-meadows, but very limited information on historic timing of hay cutting. We analyzed data collected between 1873 and 1951 on hay cutting dates and phenology of six plant species from farms distributed across Sweden. The data set comprised 16,015 observations from 175 sites. Results show that date of start and end of hay cutting varied across Sweden. The start of hay cutting was generally delayed by 2.2 days per latitudinal degree and 1.5 days per 100 m altitude, while the end of hay cutting was generally delayed by 2.9 days per latitudinal degree and 2.5 days per 100 m altitude. The average hay cutting period was 18.5 +/- 6.6 days, and became slightly shorter northwards. Site-specific factors had a great impact on when hay cutting was performed, as indicated by a significant correlation between flowering (and leafing) phenology in other species and start date of hay cutting. Today, management for conservation is usually related to a calendar date (e.g. regulated in eligibility criteria and requirements for payment in agri-environment programs in EU). In order to mimic historic management that formed this habitat, management should instead account for latitude and altitude, between-year variation in timing of hay cutting, variation in both start and end dates of hay cutting and if possible local phenological conditions.
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| 7. |
- Gerhardt, Karin, et al.
(författare)
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Kunskapssammanställning
- 2018
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Ingår i: Övergångszoner mellan skogsoch jordbruksmark : ett samverkansprojekt inom miljömålsrådet 2017. ; :2018:14, s. 55-85
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 8. |
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| 9. |
- Gustavsson, Eva, 1970, et al.
(författare)
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Land use more than 200 years ago explains current grassland plant diversity in a Swedish agricultural landscape
- 2007
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Ingår i: Biological Conservation. - : Elsevier BV. - 0006-3207. ; 138, s. 47-59
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Tidskriftsartikel (refereegranskat)abstract
- The reformation of the Swedish agricultural system, about 150 years ago, drastically changed the use of semi-natural grasslands. Grassland plant diversity has declined due to abandonment, changed management methods and production intensification. Current diversity patterns are thus a result of historical and current land use in combination. In this study we investigate the relative importance of historical grassland management and current land use for grassland plant diversity. The distribution of 128 grassland plant species in an agricultural landscape in southwest Sweden was analysed in relation to current land use and land use in three historical time periods; the 18th and the 19th century and around 1960. Land use during the three historical periods was also combined into land-use sequences. Four diversity estimates were used: number of grassland species, number of grassland specialists, Shannon-Wiener index on the specialists and total cover/hectare of specialists. Historical land use - especially 18th century and the land-use sequences - explained more of the variation among study sites than did current land use. Continuity of a specific management type was important for grassland plants as indicated by highest diversities being found in pastures continuously grazed since the 18th century. Former hay meadows, currently grazed, did not differ in any diversity estimate from abandoned hay meadows, indicating that change of management from mowing to grazing a century ago may cause diversity declines similar to abandonment some 40 years ago. Limited artificial fertilisation in the managed areas may have contributed to this effect. Further decline in grassland biodiversity in the agricultural landscape is expected because a substantial proportion of grassland plant populations occur in abandoned areas. © 2007 Elsevier Ltd. All rights reserved.
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| 10. |
- Helldin, Jan Olof, et al.
(författare)
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Abundance of red-listed species in infrastructure habitats - "responsibility species" as a priority-setting tool for transportation agencies' conservation action
- 2015
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Ingår i: Nature Conservation. - : Pensoft Publishers. - 1314-6947 .- 1314-3301. ; , s. 143-158
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Tidskriftsartikel (refereegranskat)abstract
- Road and railroad verges may contribute to nature conservation by providing habitat for many species, but due to limited resources, there is a need to select the most important road and railroad stretches for adapted management. We explore the responsibility species concept as a tool for the Swedish Transport Administration to make this selection. We propose lists of candidate responsibility species based on relative abundance of conservation priority species in the vicinity of roads and railroads, respectively. Abundance data were derived from crowd-sourced species observations. Species with >= 20% of observations in infrastructure habitats were included as candidate responsibility species. For roads 32 species were included in the list, for railroads seven species, with an overlap of three species between the lists. We analyzed habitat and management requirements of the listed species to try identifying functional groups. Most of the species require open or semi-open habitats, mainly dry grassland or heathland on sandy or limy soil, un-sprayed crop fields, or solitary trees. Host plants or substrates include broom (genus Genista), patches of bare soil, and sun exposed wood. Conservation actions prescribed for the species include, e.g., late or irregular mowing, removal of the field layer, planting of host species, protecting and providing particular substrates, and special protection of certain sites. We argue that road and railroad managers are particularly well suited to conduct most of these actions. We consider the responsibility species concept to be a useful tool for transportation agencies to set priorities for adapted verge management, and the current method to be effective in identifying a first list of candidate species. We discuss the possibility of also identifying responsibility habitats or general management measures based on the results.
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