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  • 1.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Faculty of Mathematics and Science.
    Aboveground production and growth dynamics of vascular bog plants in central Sweden1985Doctoral thesis, monograph (Other academic)
  • 2.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
    "Aldrig i mina dagar har jag lefvat friskare än nu"2006In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 100, no 1, 59-60 p.Article, book review (Other (popular science, discussion, etc.))
  • 3.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Blandmyr på kartbladen Örebro NV och NO1978In: Geologiska Föreningens i Stockholm Förhandlingar, Vol. 100, 407-408 p.Article in journal (Refereed)
    Abstract [en]

    Six mire sites designated as mixed mires on the geological maps Örebro NV and NO have been surveyed. All of them were found to be entirely ombrotrophic bogs. The necessity of considering the composition of the vegetation in drawing the distinction between ombrotrophic and minerotrophic mire sites is pointed out. 

  • 4.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Bog vegetation re-Mapped after sixty years: Studies on Skagershultamossen, central Sweden1972In: Oikos, ISSN 0030-1299, E-ISSN 1600-0706, Vol. 23, no 3, 384-393 p.Article in journal (Refereed)
    Abstract [en]

    The author has re-mapped two areas on Skagershultamossen. The new maps have been compared with maps of the same areas from 1910, made by L. von Post. The vegetation changes are small. The open water surfaces have diminished in number and extent. The theory of cyclic succession on peat bogs finds no support from the maps. Plant communities have been delimited as to correspond to those on the old maps and defined through analysis of a number of sample plots

  • 5.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Comments on Conservation, reclamation and grazing in the northern Negev: contradictory or complementary concepts? (paper 38a) by Avi Perevolotsky1995In: Pastoral Development Network. Network Paper, Vol. 38b, 21-24 p.Article in journal (Refereed)
  • 6.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Distribution and vegetation dynamics of humid savannas in Africa and Asia1992In: Journal of Vegetation Science, ISSN 1100-9233, E-ISSN 1654-1103, Vol. 3, 345-356 p.Article in journal (Refereed)
    Abstract [en]

    A review is presented on the literature about the distribution of savannas in humid climates in Africa and Asia and their vegetation dynamics. Sections are devoted to African lowland and montane savannas (the latter divided into southern, eastern, western and northern African), Madagascar, Indian subcontinent, SE Asia and New Guinea. It is concluded that the extension of savannas under humid climatic conditions and the relation to the distribution of forests is a function of cultivation, grazing by domestic and wild animals, present and previous climate, geomorphology and soil characteristics. Once established, savannas are often maintained by fires, both natural and man-made.

    Montane savannas are generally brought about by man's clearing, cultivation and burning. Fire is a stochastic variable; it creates an ecotone sensu stricto (an environmentally stochastic stress zone) at the forest/savanna border. On the other hand, if geomorphology and soil are the determinants, the transition between forest and savanna would have the character of an ecocline (a gradient zone) with fundamentally different conditions.

    In humid African lowland climates forests expand into savannas if the latter are not maintained by man. Whether forests also expand in less humid climates is disputed. In montane areas forest expansion may be delayed on degraded soils and when diaspores are lacking

  • 7.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Systematic Botany.
    Ecological studies of the vegetation on marshy shores1977In: Great Ruaha Power Project. Ecological studies of the Mtera Basin, Stockholm: Tanzania Electric Supply Co., Ltd. (SWECO) , 1977, 115-128 p.Chapter in book (Other academic)
  • 8.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Ecotone versus ecocline: vegetation zonation and dynamics around a small reservoir in Tanzania1993In: Journal of Biogeography, ISSN 0305-0270, E-ISSN 1365-2699, Vol. 20, 209-218 p.Article in journal (Refereed)
    Abstract [en]

    Data from transects on the shores and drawdown area of a small reservoir in Tanzania with a strongly fluctuating water level were used to illuminate a spatial and shortterm temporalvariation in the vegetation of a borderzone. Vegetation data were related to the position of the sample plots in relation to a water level gauge and to time (seasonal changes and changes between two consecutive years).

    Few perennial species survived the rainy season in the zone exposed to the fluctuating water level. Most plants were annuals that colonized yearly. The vegetation under the full supply level (=FSL) was sparse and related to Eriochloetum nubicae and Ecliption albae. An observed great variation between sites and years of this kind of vegetation seems to be due to the unstable character of the sites with frequent recolonization of bare land.

    The need to distinguish formally between ecotones (in a strict sense) and ecoclines is stressed. The drawdown area has (a) a peak in β diversity just below FSL, (b) no β diversity in a zone below FSL that was not flooded the preceding rainy season and (c) a certain amount of β diversity further down.(a) and(b) are considered typical of an ecotone. (c) is interpreted as a 'shortterm ecocline' of colonizing annuals between two rainy seasons. The system belowFSL as a whole is an ecotone. The shore above FSL is an ecocline with high α and β diversity.

    A downward movement of plant species during the dry season is demonstrated using canonical correspondence analysis. Thus, this ecotone is driven by the environment and no internal (autonomous) control is likely to occur

  • 9.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Effekter av myrdikning på flora och vegetation: En problemstrukturerad sammanställning av litteratur1981Book (Other academic)
  • 10.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Plant Ecology and Evolution.
    Ett etnobotaniskt livsverk2015In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 109, no 6, 346-347 p.Article in journal (Refereed)
    Abstract [sv]

    Vagn J. Brøndegaard skrev mer än 1600 artiklar om allt som hade med relationen mellan växter och människor att göra. Många av dessa har nu ställts samman i två vackra volymer.

  • 11.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Flarks in the Maloti, Lesotho1989In: Geografiska Annaler. Series A, Physical Geography, ISSN 0435-3676, E-ISSN 1468-0459, Vol. 71, 105-111 p.Article in journal (Refereed)
    Abstract [en]

    Flarks are reported to occur in mires in Qathlamba (the Drakensberg Range) of the Maloti, Lesotho at an altitude of 3200 m a.s.l. Flarks are not previously reported from Africa. Conditions for the formation and maintenance of flarks are discussed. It is argued that local waterlogging is a more likely explanation for the formation of flarks in Qathlamba than frost action.

  • 12.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Swedish Biodiversity Centre.
    Grönlands växtvärld2012In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 106, no 1, 11-23 p.Article in journal (Other (popular science, discussion, etc.))
    Abstract [en]

    Flora, vegetation and land-use history of Greenland are briefly described. The species-poor flora is Arctic. Thirteen endemic taxa may have survived the glacial period on Greenland.

    The latitudinal vegetation zones extend from High Arctic deserts to Low Arctic heaths with erect shrubs. A small area in the SW is Subarctic with elfin forests and meadows. A corresponding altitudinal zonation is also described.

    Greenland was colonised 1000 years ago by both Inuits and Norse settlers. The latter practised animal husbandry in the Subarctic SW. Hay-making was extensive on fertilized and irrigated fields. Extensive deforestation and land degradation took place, until the Norse population disappeared in the 15th century. It is argued that the decreasing population on Iceland during late medieval times made it possible for the Greenlandic Norse to move there. Modern sheep holdings have again caused land degradation. Notes on small-scale forest plantation and on ethnobotany are given.

  • 13.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Plant Ecology and Evolution.
    Gunnar Björkman och hans expedition till Lule lappmark 1924: Gunnar Björkman’s expedition to Swedish Lapland in 19242013In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 107, no 6, 354-358 p.Article in journal (Other academic)
    Abstract [en]

    Drawings by Torsten Höjer from Gunnar Björkman's botanical expedition to Swedish Lapland in 1924 are presented with some biographical notes on Björkman. The paleontologist  Birger Bohlin also participated.

  • 14.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Hedlav, Cornicularia aculeata på mossar1983In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 77, 27-28 p.Article in journal (Refereed)
  • 15.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    I västerled till Shetland1983In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 77, 26- p.Article, book review (Other (popular science, discussion, etc.))
  • 16.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
    Kartläggningen av nationallandskapet2004In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 98, no 3-4, 207-212 p.Article in journal (Other (popular science, discussion, etc.))
    Abstract [en]

    The late 19th and early 20th century was a time of intensive geological surveys, carried out in an atmosphere of national romanticism. This period has been described in a recent book by science historian Christer Nordlund, which is here presented and commentd on. Of special interest in Sweden was the issue of posglacial land upheaval and its consequencies for the development of the Baltic Sea. Special emphasis in the book is put on the importance of the geological results for plant geography and archaeology. The two botanists Gunnar Andersson and Rutger Sernander were active in this borderland between botany and geology. As scientists they represented very different mentalities and they soon became enemies. Andersson remained sceptical of the postglacial climate scheme developed by Blytt and Sernander, which he considered founded on too few data. A major scientific schism developed which culminated at the International Geological Congress in Stockholm in 1910. Nordlund is probably right in his view that the interdisciplinary work in the late 19th century relating to historical plant geography and geological development had an impoartant impact on early ecology and its formation as a science.

  • 17.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
    Landskapsblommor2005In: Människan och floran, Stockholm: Wahlström & Widstrand , 2005, 394-394 p.Chapter in book (Other (popular science, discussion, etc.))
  • 18.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Markförstöring I Afrika1987In: Upsala Nya TidningArticle, book review (Other (popular science, discussion, etc.))
  • 19.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Milstolpe i västmanländsk botanik1982In: BergslagspostenArticle, book review (Other (popular science, discussion, etc.))
  • 20.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Mires in the Thaba-Putsoa Range of the Maloti, Lesotho1988Book (Refereed)
  • 21.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Plant Ecology and Evolution.
    Mossflora över Sankta Helena2013In: Myrinia, ISSN 1102-4194, Vol. 23, 84-87 p.Article in journal (Other academic)
    Abstract [en]

    A new bryophyte flora of St. Helena in the South Atlantic is presented. Of the known 110 species, 26 are (as presently known) endemic.

  • 22.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Myrar i Örebro län1984In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 78, 21-44 p.Article in journal (Refereed)
  • 23.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Myten om tuvan som blev en hölja1987In: Fauna och flora : populär tidskrift för biologi, ISSN 0014-8903, Vol. 82, 114-122 p.Article in journal (Refereed)
  • 24.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Production and depth distribution of fine roots in a boreal open bog1990In: Annales Botanici Fennici, ISSN 0003-3847, E-ISSN 1797-2442, Vol. 27, 261-265 p.Article in journal (Refereed)
    Abstract [en]

    The production of fine roots in originally root-free ingrowth cores was studied in an ombrotrophic mire ecosystem in central Sweden (14°42'N, 60°10'E). The estimated production values, which should be considered conservative , were 51 g.m-2 in hummocks and 86 g.m-2 in lawns (= upper hollow level). This represents 38% of the total measured production of vascular plants (increment in coarse roots not included) in hummocks and lawns, respectively. In the first year of study more than 50% of the fine root standing crop was found above 10 cm depth. In the second year, which was very dry, the roots penetated significantly deeper.

  • 25.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology, Plant Ecology. Växtekologi.
    Rehabilitation for whom? The case of Kondoa Irangi Hills, Tanzania2001In: Dryland Biodiversity, Vol. 4, 16-18 p.Article in journal (Refereed)
  • 26.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Report on a study tour to the indigenous forests of the West Usambara Mts., Tanzania with special reference to regeneration1982Report (Other academic)
  • 27.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Swedish Biodiversity Centre. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Plant Ecology and Evolution.
    Sankta Helena: en hotad endemisk flora. 1. Den ursprungliga floran och vegetationen och den historiska utvecklingen2014In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 108, no 3-4, 206-218 p.Article in journal (Other academic)
    Abstract [en]

    An overview of the endemic flora and the original vegetation of Saint Helena is given.

  • 28.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Swedish Biodiversity Centre. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Plant Ecology and Evolution.
    Sankta Helena: en hotad endemisk flora. 2. situationen i dag2014In: Svensk Botanisk Tidskrift, ISSN 0039-646X, Vol. 108, no 5, 232-244 p.Article in journal (Refereed)
    Abstract [en]

    The present-day situation for the endemic flora of Saint Helena is described.

  • 29.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
    Swedish students discover cultural and natural wealth of Tanzania2005In: Dryland Biodiversity, Vol. 6, 24-25 p.Article in journal (Refereed)
  • 30.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    The cyclic regeneration on bogs – a hypothesis that became an established truth1991In: Striae, Vol. 31, 33-35 p.Article in journal (Refereed)
  • 31.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany. Växtekologi.
    The dynamics of Miombo woodlands in a Tanzanian village2005In: Sustainable biodiversity management for reduced community vulnerability to drought.: Proceedings of the 4th RPSUD Workshop held at Lake Bogoria, Kenya October 1st to 3rd, 2003., 2005, 105-116 p.Conference paper (Refereed)
  • 32.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
    The international M.Sc. training in biodiversity in Uppsala2006In: Proc. 5th RPSUD Workshop, Nakuru, Kenya, 14-17 Nov. 2004, 2006Conference paper (Other academic)
  • 33.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology, Plant Ecology.
    The late Quaternary vegetation history of Sweden1999In: Swedish plant geography: dedicated to Eddy van der Maarel on his 65th birthday / [ed] Rydin, Håkan; Snoeijs, Pauli; Diekmann, Martin, Uppsala: Uppsala universitet, 1999, Vol. 4, 15-20 p.Chapter in book (Refereed)
  • 34.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    The Nigerian environment. Report on a visit and background information1984Report (Other academic)
  • 35.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany. Växtekologi.
    The research programme "Man-land interrelations in semi-arid Tanzania"2004In: Management of dryland biodiversity in eastern Africa: Proceedings of regional workshop, National Museum. Kenya, Nairobi, 30 July-1 Aug., 1997, 2004, 58-64 p.Conference paper (Refereed)
  • 36.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Torvmarkskarteringen på kartbladen Örebro NV och NO: Replik till Magnusson1980In: Geologiska föreningens i Stockholm Förhandlingar, Vol. 100, 410- p.Article in journal (Refereed)
  • 37.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Vegetation changes after fertilization on drained peatlands in central Sweden1980In: Acta Phytogeographica Suecica, ISSN 0084-5914, Vol. 68, 17-30 p.Article in journal (Refereed)
  • 38.
    Backéus, Ingvar
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Weather variables as predictors of Sphagnum growth on a bog1988In: Holarctic Ecology, Vol. 11, 146-150 p.Article in journal (Refereed)
    Abstract [en]

    When surrounded by growing Sphagnum the rhizomes of Scirpus cespitosus grow vertically upwards in pace with the Sphagnum. It was found that there is a considerablevariation in rhizome growth between years and it is assumed that this variation is determined by variation in Sphagnum growth. The latter variation is assumed to be dependent on the weather. Simple and multiple regression analysis of rhizome growth on various weather variables gave the following results:(1) Moisture conditions are decisive for the growth. (2) The distribution in time of the moisture is more important than mean values from a certain period. (3) Although moisture in June and Augus tof the current year was important, the moisture conditions of August of the previous year explained ca 60% of the variation. (4) A combination of the two variables Birot's wetness index in August of the previous year and the same index in current June gave r2 = 0.80.

  • 39.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Swedish Biodiversity Centre. Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Plant Ecology and Evolution.
    Emanuelsson, Urban
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Swedish Biodiversity Centre.
    Karakin, Vladimir (Contributor)
    Russian Academy of Sciences, Far East Division, Vladivostok.
    von Bothmer, Roland (Contributor)
    Swedish University of Agriculture, Alnarp.
    The rural landscapes of Northeast Asia.2016Book (Other academic)
  • 40.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Grab, Stefan
    Mires in Lesotho1995In: Gunneria, ISSN 0332-8554, E-ISSN 1894-7859, Vol. 70, 243-250 p.Article in journal (Refereed)
    Abstract [en]

    Soligenous mires are common at high altitudes in the mountains of Lesotho, southern Africa. The flora and vegetation are distinctive and the mires form ecosystems not found elsewhere. Peat is formed mainly from the roots of vascular plants and is generally shallow. Bryophytes play a subordinate role in the vegetation. Flarks and thufur occur at the highest altitudes. The mires are heavily grazed and are rapidly being destroyed, particularly through gullying caused by intense grazing upslope from the sites. A project to export water to South Africa is now being put into effect. This will severely affect the mires through inundation of sites and increased pressure on remaining land. The new infrastructure in these areas also causes destruction. An appeal is made for international pressure to save the remaining mires in Lesotho.

  • 41.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
    Lindberg, Clas
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Social and Economic Geography.
    Strömquist, Lennart
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Social and Economic Geography.
    Past, present and  future: perspectives in landscape dynamics as seen from two case  studies in Tanzania2009In: Turning Science Into Action: biodiversity Conservation and Natural Resources Management in Africa, Trenton, NJ: Africa World Press, 2009Conference paper (Other academic)
    Abstract [en]

    Landscapes bear witness on past and present natural and societal processes on many different temporal and spatial scales. Major changes of the physical landscape are related to land-forming events, usually followed by continuous processes like weathering, soil formation and erosion. Observed, short-term changes in the physical environment might therefore be adjustments to past events, or the passing of thresholds, rather than reflecting present social and environmental processes.

    The different perspectives will be discussed with examples from two Tanzanian villages. In the first example we show how a combination of geological observations and later spatial information from maps and satellite data, field observations, information from villagers and archive studies has increased the observation period and made it possible to map, analyze and explain the natural and human influences on the distribution pattern of miombo woodland in Tanzania and to relate present landscapes to natural events and human decisions in the past, still making their footprints on the present day environment.

    This village forms a pocket of apparently sustainable landuse amidst a matrix of more or less degraded land. Another such pocket is found in the Mbulu highlands in northern Tanzania, where it has been explained as a result of intensification of agriculture. In our case we see rather a gradual expansion of the area under shifting cultivation in an area where land is not limiting.

    A historical explanation for this development is the fact that this village was little involved in the colonial economy and the villagization program during the 1970s (the “Operation”). Therefore, the population has remained comparatively homogenous and there is continuity in governance. As also population growth has been moderate, its population has been able to continue its traditional landuse in a sustainable way. Today, however, the situation is rapidly changing. Strong economic interests from outside tend to marginalize the influence the villagers have on their own forest resources. External forces are now more important than the internal resource use.

    With the concept “simple reproduction squeeze” Henry Bernstein pointed out declining terms of trade for agricultural products as one driving force of agricultural change, requiring constantly increasing production to maintain the income. In most of Africa there is now a negative spiral of land degradation and poverty, and it seems unlikely that industrialisation or the service sector will grow sufficiently to provide livelihoods for the rising numbers of people who no longer can find a livelihood in the traditional agricultural sector. Hence, rural economies must develop and diversify its use of local resources. Our second example is a village where local initiatives could possibly form a basis for an escape from Bernstein’s squeeze. It is important to study closely how such initiatives could develop within a framework of sustained environment and biodiversity. Although alien words like “sustainability”, “development” and “biodiversity” are unlikely to be well understood in the village, they are nevertheless likely to be discussed locally in people’s attempts to escape from the “squeeze”. Therefore, as scientists we need a better knowledge of people’s motives for acting the way they do and of their perceptions of development and sustainability, i.e. an understanding of the local development discourse.

  • 42.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Näslund, Barbro
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Edström, Eva
    Skyddsvärda myrar i Örebro län1978Report (Other academic)
  • 43.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
    Pettersson, Börge
    Strömquist, Lennart
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Social and Economic Geography.
    Ruffo, C
    Tree communities and structural dynamics in miombo (Brachystegia-Julbernardia) woodland, Tanzania2006In: Forest Ecology and Management, ISSN 0378-1127, E-ISSN 1872-7042, Vol. 230, no 1-3, 171-178 p.Article in journal (Refereed)
    Abstract [en]

    Tree vegetation and size structure was sampled in a miombo woodland area in E Tanzania and related to environmental factors, particularly soil and disturbance history. A total of 86 tree species was found. Four plant communities were distinguished through multivariate classification. Community 1 was dominated by Brachystegia boehmii, Brachystegia bussei and Julbernardia globiflora, and community 2 by B. boehmii and Brachystegia spiciformis. Community 1 was found on grey, eroded soil and community 2 on red, residual soil, a fact that opens up possibilities to use soil signals of satellite data for vegetation mapping. Community 3 is heavily disturbed miombo woodland near villages and community 4 was found on more clayey soil where miombo woodland is not expected. At our 42 sampled sites, density ranged from 74 to 1041 individuals ha−1 and basal area from 3.9 to 16.7 m2 ha−1. Regeneration is generally good but large sized trees are less prominent in communities 3 and 4 due to harvesting. With reduced disturbance miombo species may rapidly resume dominance in community 3. A higher than expected representation by the size class 30–40 (−50) cm dbh in community 2 is probably related to disturbance history. Prevalence of certain species (Pseudolachnostylis maprouneifolia, Pterocarpus angolensis and Diplorhynchos condylocarpon) may be related to frequent fires. Selective logging will soon cause extinction of Dalbergia melanoxylon, whereas Pterocarpus angolensis still has good regeneration, possibly because individuals below logging size have a good seed set. A way to get an easy overview of size classes in all species in an area using PCA is discussed.

  • 44.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Swedish Biodiversity Centre.
    Rosén, B
    Växterna i folktron2005In: Människan och floran, Stockholm: Wahlström & Widstrand , 2005, 349-394 p.Chapter in book (Other (popular science, discussion, etc.))
  • 45.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Rulangaranga, Z. K.
    University of Dar es Salaam.
    Skoglund, Jerry
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    The dynamic interrelationship between vegetation and the environment on the formerly eroded Kondoa Irangi Hills1996In: Changing environments: research on man-land interrelations in semi-arid Tanzania / [ed] C. Christiansson & I.S. Kikula, 1996, 54-63 p.Conference paper (Other academic)
  • 46.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Rulangaranga, Z K
    University of Dar es Salaam.
    Skoglund, Jerry
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Vegetation changes on formerly overgrazed hill slopes in semi-arid central Tanzania1994In: Journal of Vegetation Science, ISSN 1100-9233, E-ISSN 1654-1103, Vol. 5, 327-336 p.Article in journal (Refereed)
    Abstract [en]

    Composition of hill slope vegetation was studied in a semi-arid part of upland Tanzania where all grazing had been banned for 12 yr. The hills had been severely overgrazed previously and suffered from heavy gully and sheet erosion. Eight vegetation types are described. Floristic gradients revealed by numerical ordination techniques were found to be related mainly to degree of erosion, soil type and succession. The more or less bare soil that prevailed after grazing had ceased is now covered by grassland, woodland and immature secondary forest. The grasslands are still characterized by early successional species and they will probably remain open grassland as long as frequent burning continues. Brachystegia woodlands may have developed during earlier periods when the field layer was sparse due to grazing. The grazing had reduced the frequency of fire which in turn promoted the establishment of Brachystegia spp. Secondary forests are believed to have developed mainly where fires were not frequent, particularly at higher altitudes.

  • 47.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
    Spada, Francesco
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
    Introduction2009In: The rural landscapes of Europe: how man has shaped European nature / [ed] Urban Emanuelsson, Formas , 2009, 7-8 p.Chapter in book (Other (popular science, discussion, etc.))
  • 48.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Stenbeck, Gösta
    Konsekvenser av skogs- och myrdikning. Påverkan på flora och vegetation1981Other (Other (popular science, discussion, etc.))
  • 49.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology, Plant Ecology.
    Tekle, Kebrom
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology, Plant Ecology.
    Experiences from a project on landscape ecology and ecological rehabilitation in Southern Wello, Ethiopia2001In: Sustainable development of dryland areas of East Africa: EC Directorate General XII. Proc. of the Int. Workshop, Addis Ababa 1998, European Commission, Directorate General XII. , 2001, 283-289 p.Chapter in book (Refereed)
  • 50.
    Backéus, Ingvar
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    Zhang, Liquan
    Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecological Botany.
    瑞典植物生态学研究简介: An outline of plant ecological researches in Sweden1984In: Acta Phytoecologica Sinica, 247-252 p.Article in journal (Refereed)
12 1 - 50 of 66
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