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Bång, Åsa
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Publications (10 of 16) Show all publications
Bång, Å., Auno, U. & Boström, L. (2016). Förstelärare – en kvalitetsdrivande reform? (2ed.). In: Johansson, O. & Svedberg, L. (Ed.), Att leda mot skolans mål: (pp. 247-260). Malmö: Gleerups Utbildning AB
Open this publication in new window or tab >>Förstelärare – en kvalitetsdrivande reform?
2016 (Swedish)In: Att leda mot skolans mål / [ed] Johansson, O. & Svedberg, L., Malmö: Gleerups Utbildning AB, 2016, 2, p. 247-260Chapter in book (Other academic)
Place, publisher, year, edition, pages
Malmö: Gleerups Utbildning AB, 2016 Edition: 2
National Category
Pedagogy
Identifiers
urn:nbn:se:miun:diva-29160 (URN)9789140694478 (ISBN)
Available from: 2016-10-28 Created: 2016-10-28 Last updated: 2016-12-12Bibliographically approved
Auno, U. & Bång, Å. (2016). Lead Teachers - a Swedish reform for developing quality in education and school improvement. In: Leading education: The Distinct Contributions of Educational Research and Researchers: . Paper presented at European Conference on Educational Research, ECER, 22-26 August, 2016, Dublin, Ireland.
Open this publication in new window or tab >>Lead Teachers - a Swedish reform for developing quality in education and school improvement
2016 (English)In: Leading education: The Distinct Contributions of Educational Research and Researchers, 2016Conference paper, Oral presentation with published abstract (Refereed)
Keywords
Lead Teachers, school improvement, quality in education, teaching quality, Sweden
National Category
Pedagogy
Identifiers
urn:nbn:se:miun:diva-29517 (URN)
Conference
European Conference on Educational Research, ECER, 22-26 August, 2016, Dublin, Ireland
Available from: 2016-12-12 Created: 2016-12-12 Last updated: 2016-12-12Bibliographically approved
Bång, Å. (2007). Genetic variation and gene flow in riparian populations of Filipendula ulmaria. (Doctoral dissertation). Sundsvall: Mittuniversitetet
Open this publication in new window or tab >>Genetic variation and gene flow in riparian populations of Filipendula ulmaria
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mittuniversitetet, 2007. p. 25
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 30
Keywords
Barriers, fragmentation, Filipendula ulmaria, Gene flow, genetic variation, hydrochory, pollen dispersal, riparian habitat, spatial genetic structure
National Category
Ecology
Identifiers
urn:nbn:se:miun:diva-8893 (URN)978-91-85317-61-5 (ISBN)
Public defence
(English)
Available from: 2009-05-06 Created: 2009-05-06 Last updated: 2014-10-03Bibliographically approved
Bång, Å., Nilsson, C. & Holm, S. (2007). The potential role of tributaries as seed sources to an impoundment in northern Sweden: a field experiment with seed mimics. Rivers Research and Applications: an international journal devoted to river research and management, 23(10), 1049-1057
Open this publication in new window or tab >>The potential role of tributaries as seed sources to an impoundment in northern Sweden: a field experiment with seed mimics
2007 (English)In: Rivers Research and Applications: an international journal devoted to river research and management, ISSN 1535-1459, E-ISSN 1535-1467, Vol. 23, no 10, p. 1049-1057Article in journal (Refereed) Published
Abstract [en]

Fragmentation and flow regulation of rivers by large dams are known to obstruct the longitudinal dispersal of waterborne plant propagules between impoundments, and to affect plant community composition. However, even several decades after a dam has been built, impoundments may still have a relatively species-rich riparian flora. We hypothesized that free-flowing tributaries act as the major gene pools for such impoundments, thus alleviating the fragmenting effect large dams have on the main channel. The importance of tributaries as seed sources was tested by releasing wooden seed mimics in three different-sized (0.22-6.93 m3 s-1) tributaries of an impoundment in the Ume River in northern Sweden. In each tributary seed mimics were released, during the spring flood peak, from three points approximately 1, 2 and 3 km upstream the outlet in the impoundment. The importance of a tributary as a seed source increased with tributary size. Of the 9000 released seed mimics 1.5 % reached the impoundment; 1.2 % of the 9000 originated from the largest tributary and 0.3 % from the middle-sized one. The smallest tributary retained all its mimics.

Keywords
fragmentation, hydrochory, plant dispersal, impoundment, seed mimics, Ume River, Sweden
National Category
Ecology
Identifiers
urn:nbn:se:miun:diva-1252 (URN)10.1002/rra.1014 (DOI)000252530100001 ()2-s2.0-38349172407 (Scopus ID)4995 (Local ID)4995 (Archive number)4995 (OAI)
Available from: 2008-12-09 Created: 2008-12-09 Last updated: 2017-12-13Bibliographically approved
Bång, Å. (2006). Go with the flow?: Filipendula ulmaria, a common riparian plant species. (Licentiate dissertation). Sundsvall: Mittuniversitetet
Open this publication in new window or tab >>Go with the flow?: Filipendula ulmaria, a common riparian plant species
2006 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mittuniversitetet, 2006. p. 21
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 17
Keywords
Barriers, fragmentation, Filipendula ulmaria, genetic variation, hydrochory, riparian habitat, spatial genetic structure
National Category
Biological Sciences
Identifiers
urn:nbn:se:miun:diva-9335 (URN)91-85317-34-9 (ISBN)
Presentation
(English)
Available from: 2009-07-10 Created: 2009-07-10 Last updated: 2011-04-04Bibliographically approved
Kondolf, G. M., Boulton, A. J., O'Daniel, S., Poole, G. C., Rahel, F. J., Stanley, E. H., . . . Nakamura, G. (2006). Process-based ecological river restoration: Visualizing three-dimensional connectivity and dynamic vectors to recover lost linkages. Ecology & society, 11(2), 1-16, Article ID 5.
Open this publication in new window or tab >>Process-based ecological river restoration: Visualizing three-dimensional connectivity and dynamic vectors to recover lost linkages
Show others...
2006 (English)In: Ecology & society, ISSN 1708-3087, E-ISSN 1708-3087, Vol. 11, no 2, p. 1-16, article id 5Article in journal (Refereed) Published
Abstract [en]

Human impacts to aquatic ecosystems often involve changes in hydrologic connectivity and flow regime. Drawing upon examples in the literature and from our experience, we developed conceptual models and used simple bivariate plots to visualize human impacts and restoration efforts in terms of connectivity and flow dynamics. Human-induced changes in longitudinal, lateral, and vertical connectivity are often accompanied by changes in flow dynamics, but in our experience restoration efforts to date have more often restored connectivity than flow dynamics. Restoration actions have included removing dams to restore fish passage, reconnecting flow through artificially cut-off side channels, setting back or breaching levees, and removing fine sediment deposits that block vertical exchange with the bed, thereby partially restoring hydrologic connectivity, i.e., longitudinal, lateral, or vertical. Restorations have less commonly affected flow dynamics, presumably because of the social and economic importance of water diversions or flood control. Thus, as illustrated in these bivariate plots, the trajectories of ecological restoration are rarely parallel with degradation trajectories because restoration is politically and economically easier along some axes more than others.

Keywords
connectivity, flow dynamics, hyporheic zone, river restoration.
National Category
Biological Sciences
Identifiers
urn:nbn:se:miun:diva-1603 (URN)2-s2.0-33846052287 (Scopus ID)4876 (Local ID)4876 (Archive number)4876 (OAI)
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2017-12-13Bibliographically approved
Bång, Å., Nilsson, C. & Holm, S. (2004). What is the role of tributaries as seed sources for a run-of-river impoundment: a field experiment: Konferens SISORL 2004.
Open this publication in new window or tab >>What is the role of tributaries as seed sources for a run-of-river impoundment: a field experiment: Konferens SISORL 2004
2004 (English)Conference paper, Published paper (Other academic)
Abstract [en]

The reservoirs in impounded rivers are blocked by dams, implying that plant seeds, especially waterborne ones, have trouble dispersing between reservoirs. We examined whether the tributaries have an important role in the dispersal of seeds to a specific reservoir. We did this by releasing small, coloured wooden cubes in three tributaries of the Stensele reservoir in northern Sweden, one small, one middle-sized and one large-sized. This work was carried out in spring during major flood. At the day of cube release, we counted the number of cubes that dispersed from the tributaries out into the reservoir. In summer, we collected the cubes that had stranded on the banks of the tributaries to learn how far they had spread within each stream. Our examinations showed that a big stream disperses most seeds the longest distance. The smaller the stream, the shorter the distance the seeds were spread, and the fewer the seeds that reached the reservoir. We concluded that large tributaries have an important role in dispersing plants to reservoirs of impounded rivers.

Keywords
seed dispersal, run-of-river impoundment
National Category
Ecology
Identifiers
urn:nbn:se:miun:diva-5049 (URN)2723 (Local ID)2723 (Archive number)2723 (OAI)
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2011-04-08Bibliographically approved
Nilsson, C., Bång, Å. & Holm, S. (2003). Control of plant species diversity in riparian corridors: Konferens ESEB 2003.
Open this publication in new window or tab >>Control of plant species diversity in riparian corridors: Konferens ESEB 2003
2003 (English)Conference paper, Published paper (Other academic)
Abstract [en]

previous study has shown that plant communities differ floristically between impoundments but remain similar within impoundments in a regulated river. The same pattern did not occur among plant species in a free-flowing river which instead showed a continuous change in species composition from the headwaters to the coast. This strongly suggests that the dispersal of plants is obstructed when dams are built on rivers. The present project will specifically study whether dams also affect the genetic diversity among and between populations of plant species. Filipendula ulmaria will be used as a first test species. A second question is whether tributaries have any impact on the distribution of genetic diversity of plant species within impoundments. A third question deals with the impact of seed and pollen dispersal on the genetic diversity among and between plant species populations. The project combines field sampling, field experiments and laboratory methods such as isoenzymes, microsatellites and other DNA-methods.

Keywords
population genetics, river regulation
National Category
Ecology
Identifiers
urn:nbn:se:miun:diva-5054 (URN)2718 (Local ID)2718 (Archive number)2718 (OAI)
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2011-04-08Bibliographically approved
Bång, Å., Holm, S. & Nilsson, C. (2002). Control of plant species diversity in riparian corridors: Konferens OIKOS 2002.
Open this publication in new window or tab >>Control of plant species diversity in riparian corridors: Konferens OIKOS 2002
2002 (English)Conference paper, Published paper (Other academic)
Abstract [en]

previous study has shown that plant communities differ floristically between impoundments but remain similar within impoundments in a regulated river. The same pattern did not occur among plant species in a free-flowing river which instead showed a continuous change in species composition from the headwaters to the coast. This strongly suggests that the dispersal of plants is obstructed when dams are built on rivers. The present project will specifically study whether dams also affect the genetic diversity among and between populations of plant species. Filipendula ulmaria will be used as a first test species. A second question is whether tributaries have any impact on the distribution of genetic diversity of plant species within impoundments. A third question deals with the impact of seed and pollen dispersal on the genetic diversity among and between plant species populations. The project combines field sampling, field experiments and laboratory methods such as isoenzymes, microsatellites and other DNA-methods.

Keywords
population genetics, river regulation, seed dispersal
National Category
Ecology
Identifiers
urn:nbn:se:miun:diva-5051 (URN)2719 (Local ID)2719 (Archive number)2719 (OAI)
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2011-04-08Bibliographically approved
Winka, K., Eriksson, O. E. & Bång, Å. (1998). Molecular evidence for recognizing the Chaetothyriales . Mycologia, 90(5), 822-830
Open this publication in new window or tab >>Molecular evidence for recognizing the Chaetothyriales
1998 (English)In: Mycologia, ISSN 0027-5514, Vol. 90, no 5, p. 822-830Article in journal (Refereed) Published
Abstract [en]

The 18S rRNA gene sequences from the bitunicate ascomycetes Ceramothyrium linnaeae (Chaetothyriaceae) and Coccodinium bartschii (Coccodiniaceae) were determined and aligned with the corresponding sequences from 33 other ascomycetes and one basidiomycete, Boletus satanas. Phylogenetic analyses of these sequences supported previous reports that the Herpotrichiellaceae (Capronia, black yeasts, etc.) are distant from Dothideales and Pleosporales. A new sequence of Ceramothyrium linnaeae, representing the family Chaetothyriaceae, is monophyletic with representatives of the Herpotrichiellaceae, suggesting that both families can be accommodated in the order Chaetothyriales. The concept of Chaetothyriales can not be based on the presence of periphysoids, since Coccodinium bartschii, which also has periphysoids, clustered with members of the Dothideaceae. The Chaetothyriales are not closely related to other bitunicates, but are the sister group of either Eurotiales or Lecanorales/Peltigerales.

Keywords
Ascomycota, Coccodiniaceae, Dothideales, evolution, phylogeny, ribosomal RNA
National Category
Biological Sciences
Identifiers
urn:nbn:se:miun:diva-4191 (URN)4877 (Local ID)4877 (Archive number)4877 (OAI)
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2011-01-10Bibliographically approved
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