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  • 1.
    Bodin, Per
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Resilience and other stability concepts in ecology: notes on their origin, validity and usefulness2004In: The ESS Bulletin, Vol. 2 (2), p. 33-43Article in journal (Refereed)
  • 2.
    Bodin, Per
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    The usefulness of stability concepts in forest management when coping with increasing climate uncertainties2007In: Forest Ecology and Management, ISSN 0378-1127, E-ISSN 1872-7042, Vol. 242, p. 541-552Article in journal (Refereed)
  • 3. Enckell, P H
    et al.
    Bengtsson, S-A
    Douwes, P
    Niklasson, M
    Stille, B
    Wiman, Bo
    Department of Ecology University of Lund.
    The dispersal pattern of an anthropochorous species: Genetic variation in populations of Lumbricus terrestris L. (Lumbricidae) in the Faroe Islands1986In: Hereditas, ISSN 0018-0661, E-ISSN 1601-5223, Vol. 104, no 2, p. 253-261Article in journal (Refereed)
    Abstract [en]

    Ten populations of the anthropochorous Lumbricus terrestris L. (Lumbricidae) from six islands in the Faroes were scored for enzyme variation by electrophoresis. The allele frequencies were analyzed by cluster analysis and information entropy relationships.

    There was a significant heterogeneity in allele frequencies among the samples. Four groups could be distinguished in the cluster analysis of which one was larger (at least five sites); two sites were defined as outliers. Information entropy showed that the allele frequency data were structured differently over the sites and that the most non-random site was also one of the outliers in the cluster space. The main group in the cluster analysis also forms a geographically central group in the islands. These results are discussed against the known colonization history of the Faroes. It is concluded that the genetic variation pattern does not indicate any single point of invasion of L. terrestris into the islands. Rather, it shows that former and present-day communications between the islands are responsible for similarities and dissimilarities in genetic variation in the L. terrestris populations. 

  • 4. Enckell, P H
    et al.
    Bengtsson, S-A
    Wiman, Bo
    Department of Ecology, University of Lund.
    Serf and waif colonization: different patterns in distribution and dispersal of invertebrate species in settlements in the Faroe Islands1987In: Journal of Biogeography, ISSN 0305-0270, E-ISSN 1365-2699, Vol. 14, p. 89-104Article in journal (Refereed)
    Abstract [en]

    We measured the faunal similarityb etween samples of Coleoptera, Araneae and Gastropoda + Lumbricidae + Opiliones from infields ites in the Faroes by ordination,a nd compared the sites on a between-islandb asis. The aeriallyd ispersingA raneae did not show any island-specific pat-tern; the faunal similarityw as high between the islands. Coleoptera showed a patternw heres imilarityw ithini slandsw as highert hanb etween them.T he anthropochorous parto ft he Coleopteraf ormeda clear pattern reminiscentof t heg eographicala ppearanceo ft heF aroes; similarity within large islandsw as clearlyh ighert han betweeni slands. This indicatest hat one of the axes in thep rincipalc omponenta nalysisi s an approximationo f some measure of geographical distance. The small islands, however, showed the randomp atterno f a waifc olonizationa nd occurreds cattered in the factors pace. The anthropochorous groupsG astropoda + Lumbricidae+ Opiliones differedm arkedlyf roms uch a pattern,a nd were more similart o the aerially dispersingA raneae. We interprett his as being the result of a dispersalb etweena nd withinis landsd ependento n Man, and a persistence (of manys pecies) in man-madeh abitatso nly. We termt hiss erfc oloniza-tion to indicate those species' total dependence upon Man. 

  • 5.
    Evgenieva, Tsvetina
    et al.
    Institute of Electronics, Bulgarian Academy of Sciences.
    Tatarov, Boyan
    Atmospheric Environment Division, Japan National Institute for Environmental Studies.
    Wiman, Bo L. B.
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Kolev, Nikolay
    Institute of Electronics, Bulgarian Academy of Sciences.
    Donev, Evgeni
    Department of Meteorology and Geophysics, Faculty of Physics, St. Kliment Ohridski Sofia University.
    Ivanov, Danko
    Department of Meteorology and Geophysics, Faculty of Physics, St. Kliment Ohridkski Sofia University.
    Danchovski, Ventislav
    Department of Meteorology and Geophysics, Faculty of Physics, St. Kliment Ohridski Sofia University.
    Petkov, Doyno
    Solar-Terrestrial Influences Laboratory, Bulgarian Scademy of Sciences.
    Grigorieva, Vera
    Institute of Electronics, Bulgarian Academy of Sciences.
    Kolev, Ivan
    Institute of Electronics, Bulgarian Academy of Sciences.
    Remote sensing and in situ investigation of the atmosphere over mountain valley (Sofia - Bulgaria)2010In: Proceedings of the 25th International Laser Radar Conference, 2010, p. 1138-1141Conference paper (Refereed)
  • 6.
    Evgenieva, Tsvetina
    et al.
    Institute of Electronics, Bulgarian Academy of Sciences.
    Wiman, Bo L. B.
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Kolev, Nikolay
    Institute of Electronics, Bulgarian Academy of Sciences.
    Donev, Evgeni
    Department of Meteorology and Geophysics, Faculty of Physics, St. Kliment Ohridski Sofia University.
    Ivanov, Danko
    Department of Meteorology and Geophysics, Faculty of Physics, St. Kliment Ohridski Sofia University.
    Danchovski, Ventislav
    Department of Meteorology and Geophysics, Faculty of Physics, St. Kliment Ohridski Sofia University.
    Petkov, Doyno
    Solar-Terrestrial Influences Institute, Bulgarian Academy of Sciences.
    Grigorieva, Vera
    Institute of Electronics, Bulgarian Academy of Sciences.
    Kolev, Ivan
    Institute of Electronics, Bulgarian Academy of Sciences.
    Lidar, ceilometer and sun photometer investigation of the aerosol optical characteristics in the troposphere over Sofia, Bulgaria2010In: Comptes Rendus de l'Academie Bulgare des Sciences / Proceedings of the Bulgarian Academy of Sciences, ISSN 1310-1331, E-ISSN 2367-5535, Vol. 63, no 8, p. 1191-1200Article in journal (Refereed)
    Abstract [en]

    The paper presents the results from planetary boundary layer (PBL) height and aerosol optical depth (AOD) measurements carried out in two different experimental sites in Sofia as well as from three-point measurements of aerosol number concentration.

    The main aim of the present investigation is to determine optical and microphysical characteristics of the atmospheric aerosol in three points of the valley and their variation during the PBL formation over urban area, park zone and mountain site. Four instruments (lidar, ceilometer, aerosol particle counter and sun photometer) were used in this study.

    The experimental AOD data obtained at lambda = 500nm gave values in the range from 0.22 to 0.41 in case of cloud-free skies and up to around 0.8 under partly cloudy conditions. Aerosol particle counter data on aerosol-particle concentration variations in the size range 0.3-1 mu m provided supportive information on the evolution of the valley-mountain aerosol in time and height during the mixing layer development. Joint interpretation of sun photometer, aerosol lidar and ceilometer CHM 15k data allow the influence of the main part of the atmospheric aerosol in the planetary boundary layer to be accounted as well as the significant influence of aerosol layers and high clouds on AOD values.

  • 7.
    Evgenieva, Tsvetina
    et al.
    Institute of Electronics, Bulgarian Academy of Sciences.
    Wiman, Bo L. B.
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Kolev, Nikolay
    Institute of Electronics, Bulgarian Academy of Sciences.
    Savov, P.
    Department of Physics, Ivan Rilski University.
    Donev, E.
    Department of Meteorology & Geophyiscs, St. Kliment Ohridski University.
    Ivanov, D.
    Department of Meteorology & Geophyiscs, St. Kliment Ohridski University.
    Danchovski, V.
    Department of Meteorology & Geophyiscs, St. Kliment Ohridski University.
    Kaprielov, B.
    Institute of Electronics, Bulgarian Academy of Sciences.
    Grigorieva, V.
    Institute of Electronics, Bulgarian Academy of Sciences.
    Iliev, Ts.
    Central Laboratory of Solar-Terrestrial Influences, Bulgarian Academy of Sciences.
    Kolev, I.
    Institute of Electronics, Bulgarian Academy of Sciences.
    Three-point observation in the troposphere over Sofia-Plana Mountain,Bulgaria2011In: International Journal of Remote Sensing, ISSN 0143-1161, E-ISSN 1366-5901, Vol. 32, no 24, p. 9343-9363Article in journal (Refereed)
    Abstract [en]

    Based on a novel combination of approaches and instruments, this article presents campaign-based results from atmospheric boundary layer (ABL) height and aerosol optical depth (AOD) measurements carried out at two different experimental sites in Sofia, as well as from three-point measurements of aerosol number concentrations. Several instruments (lidar (developed by the IE), ceilometer, aerosol particle counter, sun photometer and meteorological sensors) were used in this study. Based on joint interpretation of the instruments' data we assess the influence of the atmospheric aerosol in the planetary boundary layer and the significant influence of aerosol layers and high clouds on AOD values. Measurements of AOD in the city basin gave values in the range 0.22-0.41 for cloud-free skies, and up to around 0.8 under partly cloudy conditions. The information obtained during the two campaigns indicates that aerosol particle concentrations were lower in park areas than along heavy-traffic thoroughfares in the city, but higher than in the mountain area. In conclusion, our study demonstrates the potential of employing a broad array of instruments for the study of boundary layer and aerosol over large, valley-situated and heavily urbanized city areas.

  • 8. Gaydarova, P N
    et al.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Yurukova, L
    Donev, E
    Paneva, M L
    Andreeva, R V
    Integrated Environmental Diagnosis and Assessment: Leaf Area Index in Bulgarian Pinus Sylvestris Stands2001Report (Other academic)
  • 9. Gaydarova, P N
    et al.
    Yurukova, L
    Donev, E
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Integrated Environmental Diagnosis and Assessment: The IEDA October 98 Ahtopol/Silistar Biogeochemistry Campaign2000Report (Other academic)
  • 10. Gaydarova, P N
    et al.
    Yurukova, L
    Donev, E
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Notes on the Natural Resources and Biogeochemistry of the Bulgarian South Black Sea Coast2000In: 1999 Arrhenius Seminar: / [ed] B.L.B. Wiman & L. Pettersson, Kalmar: Högskolan i Kalmar , 2000, p. 65-72Chapter in book (Other academic)
  • 11. Lövbrand, Eva
    et al.
    Stripple, Johannes
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Earth System governmentality. Critical notes on science in the Anthropocene.2008Conference paper (Refereed)
  • 12. Lövbrand, Eva
    et al.
    Stripple, Johannes
    Wiman, Bo L. B.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Earth System governmentality. Reflections on science in the Anthropocene2009In: Global Environmental Change, ISSN 0959-3780, E-ISSN 1872-9495, Vol. 19, no 1, p. 7-13Article in journal (Refereed)
    Abstract [en]

    This paper examines Earth System Science as a novel approach to global environmental change research. Drawing upon Michel Foucault's governmentality concept, the paper opens up the Earth System metaphor to political analysis and asks what it does to our understanding of nature and society as a governable domain. We trace the scientific practices that have produced the Earth System as a thinkable analytical category back to the International Geophysical Year in 1957. We also identify 'the Anthropocene' as a central and yet ambiguous system of thought for Earth System Science that harbours different strategies for sustainability in terms of (1) the persons over whom government is to be exercised; (2) the distribution of tasks and actions between authorities; and (3) contrasting ideals or principles for how government should be directed.

  • 13.
    Lövbrand, Eva
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    A changing climate for science and policy responses to the environmental agenda: from global prevention and mitigation to glocal adaptation2004In: The ESS Bulletin, Vol. 2 (2), p. 4-7Article in journal (Other academic)
  • 14.
    Reinap, Ausra
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Wiman, Bo L. B.
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Gunnarsson, Sara
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Svenningsson, Birgitta
    Lund University.
    Dry deposition of NaCl aerosols: theory and method for a modified leaf-washing technique2010In: Atmospheric Measurement Techniques Discussions, ISSN 1867-8610, E-ISSN 1867-8610, Vol. 3, no 4, p. 3851-3876Article in journal (Refereed)
    Abstract [en]

    Within the framework of aerosol deposition to vegetation we present a specially designed leaf wash-off method used in a wind-tunnel based study, where leaves of Quercus robur L. were exposed to NaCl aerosols. We summarise the principles and illustrate the method for two types of substances, the chloride ion and the sodium ion, and for two levels of aerosol exposure prior to leaf washing. On the average, in the low-exposure experiments (S1), the 1st (2nd) wash-off step provided 90% (96%) of the amount of Cl− on the leaves. In the high-exposure experiments (S2) the corresponding values were 96% and 99%. For sodium, the general dynamics resembles that of chloride, but the amounts washed off were, in both series, on the average below what would be expected if the equivalent ratio in the tunnel aerosol were to be preserved. Na+ showed adsorption and/or absorption at the leaf surfaces. The difference between the mean values of the amounts of chloride and of sodium washed off in S1 was not statistically significant, the mean Na+ to Cl− difference as a fraction of Cl− being minus 18%±27%; corresponding values for S2 were minus 16%±9%, however (p<0.05). In the latter case, 101±57 μequiv Na+ per m2 of leaf area were missing for the equivalent relationship 1:1 with Cl− to be met. Although uncertainties are thus large, this indicates the magnitude of the Na+-retention. The method is suitable not only for chloride, an inexpensive and easy-to-handle tracer, but also for sodium under exposure at high aerosol concentrations. Our findings will help design further studies of aerosol/forest interactions.

  • 15.
    Reinap, Ausra
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Wiman, Bo L. B.
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Svenningsson, Birgitta
    Lund University.
    Gunnarsson, Sara
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Forest-edge effects on sea-salt aerosol deposition: a wind-tunnel study using living oak leaves2012In: Boreal environment research, ISSN 1239-6095, E-ISSN 1797-2469, Vol. 17, no 3-4, p. 193-209Article in journal (Refereed)
    Abstract [en]

    Landscape patchiness creates aerodynamic transitions zones that affect the exchange of nutrients and pollutants between the atmosphere and vegetation. Using an artificially generated NaCl aerosol, with its mass-versus-particle-size distribution characterised by an aerodynamic mean particle diameter of 1.6 µm and a geometrical standard deviation of 1.9, we investigate the forest-edge effect on aerosol deposition within a model oak (Quercus robur L.) canopy in a wind tunnel with a smooth up-wind surface, and provide quantitative estimates of deposition rates within the emulated beach-to-forest transition. The deposition rate is maximal around the forest edge with an enhancement factor in relation to the beach deposition of 2.4 for Cl- and 2.0 for Na+. Results are in reasonable agreement with those obtained from deposition models, field studies, and other wind-tunnel based investigations. We find a tendency towards an edge effect also at the downwind forest end, which is in support of model predictions. Estimates of deposition velocities at the edge are 0.06 cms-1 and 0.05 cms-1 for Cl- and Na+, respectively. Because of the edge effect the model forest’s deposition velocity is enhanced, being 1.4 times higher around the edge in comparison with the entire forest. This suggests that field measurements of deposition in the interior of a forest “island” in an otherwise open landscape would underestimate the deposition to the entire forest. Our results can help improve estimates of aerosol-borne inputs of nutrients or pollutants to forests that would experience shifts in meteorological regimes due to changes in climate and forestry practices, in particular with respect to deciduous species in coastal environments where forest-edge effects might be substantial.

     

  • 16.
    Reinap, Ausra
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Wiman, Bo L. B.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Svenningsson, Birgitta
    Gunnarsson, Sara
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Oak leaves as aerosol collectors2009In: Proceedings of the Nordic Society for Aerosol Research (NOSA) Symposium, Lund, November 12-13, 2009, Lund, 2009Conference paper (Refereed)
  • 17.
    Reinap, Ausra
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Wiman, Bo L. B.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Svenningsson, Birgitta
    Lund University.
    Gunnarsson, Sara
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Oak leaves as aerosol collectors: relationships with wind velocity and particle size distribution. Experimental results and their implications2009In: Trees, ISSN 0931-1890, E-ISSN 1432-2285, Vol. 23, no 6, p. 1263-1274Article in journal (Refereed)
    Abstract [en]

    Advancing the understanding of the aerosol-capture efficiencies of forest components such as leaves and needles, and of the mechanisms that underpin these efficiencies, is essential to the many related issues of forest turnover of nutrients and pollutants. For idealized collectors (such as artificial plates or cylinders) aerosol-mechanics offers a means for calculating capture efficiencies. For living collectors, in particular deciduous leaves, experimental investigations become necessary to assist in formulating the sub-models of capture efficiency that are fundamental to the modelling of fluxes of aerosol-borne substances to forests. We here present wind-tunnel based methods and results for leaves of Quercus robur L. exposed to an aerosol whose mass versus aerodynamic particle size distribution is characterised by a geometric mean aerodynamic particle diameter around 1.2 mu m and a geometric standard deviation around 1.8. With respect to that distribution, and founded on a specially designed leaf wash-off method, we obtained average oak-leaf capture efficiencies ranging from 0.006% of the approaching aerosol mass flux at wind-speed 2 ms(-1) to 0.012% of the flux at wind-speeds 10 ms(-1), respectively. These values can be translated into deposition velocities (V (d) ) for a leaf ensemble with a given leaf area index (LAI). With LAI in the range 2-5 (commonly found in the field) and for wind-speeds 2, 5 and 10 ms(-1), resulting V (d) -values would be 0.02-0.05, 0.05-0.13, and 0.2-0.6 cm/s, respectively. To the extent comparisons are possible, our capture efficiency values are at the low end of the range of values reported by other researchers. The strong wind-speed sensitivity of V (d) has implications for the deposition of aerosol-borne substances to forests for which wind regimes may shift as a result of climatic and land-use changes.

  • 18.
    Reinap, Ausra
    et al.
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Svenningsson, Birgitta
    Aerosol capture by oak leaves – an experimental investigation2008In: Proceedings of the 2008 European Aerosol Conference, Thessaloniki, August 24-29, 2008, Thessaloniki, 2008Conference paper (Refereed)
  • 19. Sievering, H
    et al.
    Wiman, Bo
    Department of Plant Ecology, University of Lund.
    Agren, G I
    Lannefors, H O
    Discussion: Aerosol characteristics in a forest1986In: Atmospheric Environment, ISSN 1352-2310, E-ISSN 1873-2844, Vol. 20, p. 407-408Article in journal (Refereed)
  • 20. Syrakov, D
    et al.
    Batchvarova, EWiman, BoUniversity of Kalmar, School of Pure and Applied Natural Sciences.
    Long-Range Air Pollution: from Models to Policies1998Collection (editor) (Other academic)
  • 21. Tyler, G
    et al.
    Bergkvist, B
    Rühling, A
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Metaller i skogsmark – deposition och omsättning1983Report (Other academic)
  • 22.
    Wiman, Bo
    Department of Plant Ecology, University of Lund.
    A non-stationary model for sulphur aerosol depletion and deposition in a young spruce stand1985In: Tellus. Series B, Chemical and physical meteorology, ISSN 0280-6509, E-ISSN 1600-0889, Vol. 37B, p. 230-242Article in journal (Refereed)
    Abstract [en]

    A non-stationary partial differential equation (pde) of aerosol concentration in one space coordinate z (height above ground) is given. Submodels for the structure and aerodynamics of a young Norway spruce stand (height ∼6 m) are developed from site-specific empirical data during a dry, stagnant summer period. The submodels and an empirical time series over 120 h for above-stand sulphur aerosol concentrations are used to quantify the pde and its upper boundary conditions. A simplified analysis indicates an uncertainty within one order of magnitude associated with this step. The pde-predictions of within-stand concentrations are within a factor of 2 of corresponding empirical concentration data. The associated deposition patterns show a diurnal variation and a complex z-dependency. Model improvements and further evaluation methods are suggested. The overall results suggest that estimates of aerosol deposition to forests based only on yearly and regional averages overlook strongly time and space dependent deposition patterns. 

  • 23.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Aerosol capture by complex forest architecture1988In:  Vegetation Structure in Relation to Carbon and Nutrient Economy / [ed] J.T.A Verhoeven, G.W. Heil and M.J.A. Werger, The Hague: SPB Academic Publishing , 1988, p. 157-Conference paper (Refereed)
  • 24.
    Wiman, Bo
    UNIV LUND, DEPT PLANT ECOL, S-22362 LUND, SWEDEN .
    Aerosol collection by Scots pine seedlings: design and application of a wind tunnel method1981In: Oikos, Vol. 36, no 1, p. 83-92Article in journal (Refereed)
  • 25.
    Wiman, Bo
    Department of Ecology.
    Aerosol Dynamics in Coniferous Forests - empirical and theoretical analyses1985Doctoral thesis, monograph (Other academic)
  • 26.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Aerosols at air/water/land interfaces: modelling and measurements2000In: Kluwer Academic/Plenum Publishers In: Gryning S.-E. and Batchvarova E. (eds) (2000) Air Pollution Modelling and Its Application XIII, New York, 2000Conference paper (Refereed)
  • 27.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Aerosols at an air/lake interface1995In: Journal of Aerosol Science, Vol. 26Article in journal (Refereed)
  • 28.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Att vidmakthålla naturresurserna: vision, vilja, väg i några framtidsstudier över miljö och resurser i världen1988Book (Other (popular science, discussion, etc.))
  • 29.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Broken clouds or yellow mist: on the dialogue between art and science1998Other (Other academic)
  • 30.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Climate Engineering. Concepts, Examples, and Risks2002In: Encyclopedia of Life Support Systems / [ed] UNESCO, Oxford, UK: Eolss Publishers Co , 2002Chapter in book (Other academic)
  • 31.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Climate stability - a limited resource (Invited review of Krause F., Bach W. and Koomey J., Energy Policy in the Greenhouse: From Warming Fate to Warming Limit; Vol. 1, Earthscan Publications Ltd., London, 1990)1991In: Ecological Economics, ISSN 0921-8009, E-ISSN 1873-6106, Vol. 4, p. 171-174Article in journal (Refereed)
  • 32.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Deposition av tungmetallhaltiga och försurande aerosoler till skogsekosystem1985Report (Other academic)
  • 33.
    Wiman, Bo
    Lunds universitet.
    Designing resource systems for sustainability: safe-fail versus fail-safe strategies1992In: Society and the environment: a Swedish research perspective / [ed] Uno Svedin and Britt Hägerhäll Aniansson, Dordrecht: Kluwer Academic Publishers, 1992, 1, p. 23-45Chapter in book (Other academic)
    Abstract [en]

    The complexity of natural systems opens up new risk perspectives for resource utilization, but also new opportunities. Efficient use of renewable resources, and of carbon-sequestering techno-ecology, can be combined into aggregates. These aggregates could be designed to contribute to safe-failing environmental futures. Tactical and strategical ecological engineering, however, invokes crucial questions of an intangible character. These include accounting for attitudes towards nature so as to render possible local-specific, culturally acceptable and ‘bottom-up’ tailor-made designs of multiple-use and flexible resource systems. Indicators of progress with respect to sustainable development will have to be formulated for use on the local, regional and global scale. Such indicators would benefit from adopting non-conventional perceptions, aimed at tracking resource-use efficiency, and at recognizing the stabilizing as well as destabilizing qualities of the complexity provided by ecological systems.

  • 34.
    Wiman, Bo
    Department of Ecology, University of Lund.
    Diurnal variations of aerosol concentrations inside and above a young spruce stand: modelling and measurements1986In: Water, Air and Soil Pollution, ISSN 0049-6979, E-ISSN 1573-2932, Vol. 31, p. 343-348Article in journal (Refereed)
    Abstract [en]

    Aerosol characteristics and aerodynamic conditions above and insideforests are strongly dynamic, especially for landscapes subject to frequent frontal activityand episodic anthropogenic aerosol inflows. Using empirical data of 1-hr time- resolutiona non-stationary partial differential equation model (based on K-theory and classicalfiltration theory for concentration and deposition variations in a forest) is shownreasonably capable of handling such temporal complexity, which is also shown to bereflected in a temporally complex deposition pattern. 

  • 35.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Ecological complexity and risk perception1998Other (Other academic)
  • 36.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Effects of Global Warming on Environmental Pollution2002In: Encyclopedia of Life Support Systems, Oxford, UK: Eolss Publishers Co , 2002Chapter in book (Other academic)
  • 37.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Gaming – not gambling – environmental futures1995In: Expanding Environmental Perspectives: Lessons of the Past, Prospects for the Future / [ed] Lundgren L., Nilsson LJ. and Schlyter P., Lund: Lund University Press , 1995, p. 279-287Chapter in book (Other academic)
  • 38.
    Wiman, Bo
    Department of Environmental and Energy Systems Studies, University of Lund.
    Implications of environmental complexity for science and policy1991In: Global Environmental Change, ISSN 0959-3780, E-ISSN 1872-9495, Vol. 1, no 3, p. 235-247Article in journal (Refereed)
    Abstract [en]

    Theoretical as well as empirical reevaluations of nature are occurring in response to failures to predict environmental changes, recent developments in systems theory, and new research into environmental attitudes. At present, holistic concepts in ecological theory are marked by dissension, and environmental policy is beset with turmoil — both situations are due in part to differing perceptions of the role of complexity in natural systems. This article identifies and analyses links between changing scientific perspectives on nature and emerging perceptions of environmental policies. It is argued that because society faces basic uncertainty in predicting environmental futures, it is time to formulate a fundamentally new risk philosophy, complementary interdisciplinary management approaches, and a more modern attitude towards efficient and renewable resource systems. 

  • 39.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Konstnärens himlafärger inspirerade fysikerna1988In: Forskning och Framsteg, Vol. 5, p. 46-51Article in journal (Other (popular science, discussion, etc.))
  • 40.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Lufthavens svävande korn blir allt fler1988In: Forskning och Framsteg, Vol. 3, p. 14-20Article in journal (Other (popular science, discussion, etc.))
  • 41.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Metaphors, analogies, and models in communicating climate-change uncertainty and economics to policy: a note on a pre-UNCED U.S. case1995In: Ecological Economics, Vol. 15, p. 21-28Article in journal (Refereed)
  • 42.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Notes towards sustainability: from risks of progress to socio-environmental security1999In: The Yoyogi Olympic Youth Center Japan Center for a Sustainable Environment and Society (JACSES) International Seminar “The Road to Sustainable Energy in Japan and Asia – Challenges and Opportunities for the Future, Tokyo, 1999Conference paper (Refereed)
  • 43.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    On the interaction between landscape complexity and aerosol sink/source dynamics1998In: Long-range air pollution: from models to policies: Proceedings from the Swedish-Bulgarian Workshop,19-23 October 1997, Sozopol, Bulgaria / [ed] D Syrakov, E Batchvarova, B Wiman, Sofia-Moscow: Pensoft Publishers , 1998, p. 157-165Chapter in book (Other academic)
  • 44.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    On transformations for a solar resource era1998Other (Other academic)
  • 45.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    På jakt efter lagom1984In: Forskning och Framsteg, Vol. 8, p. 34-39Article in journal (Other (popular science, discussion, etc.))
  • 46.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Responsibility and serendipity in environmental science: notes on the blind spots of objectivity1996In: Culture, perceptions, and environmental problems: interscientific communication on environmental issues / [ed] Mats Rolén, Stockholm: Swedish Council for Planning and Coordination of Research (Forskningsrådsnämnden) (FRN) , 1996, 1, p. 47-56Chapter in book (Other academic)
  • 47.
    Wiman, Bo
    Department of Plant Ecology, University of Lund.
    Skala i natur, teknik, samhälle, kultur och människoliv: essäer, exempel, samtal under en seminarieserie vid Kollegiet Människa och miljö, Universitetet i Lund1985Collection (editor) (Other academic)
  • 48.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    The ecological systems context: complexity, risk perception, and policies in a changing environment1992In: IATSS Research, Vol. 15 (2), p. 19-27Article in journal (Refereed)
  • 49.
    Wiman, Bo
    University of Kalmar, School of Pure and Applied Natural Sciences.
    The world of perceptions versus the world of data: notes towards safe-failing the energy equation1991In: Springer-Verlag In: K. Takeuchi and M. Yoshino (eds) The Global Environment, Heidelberg, 1991Conference paper (Refereed)
  • 50.
    Wiman, Bo
    et al.
    Department of Plant Ecology, University of Lund.
    Agren, G I
    Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences, Uppsala.
    Aerosol depletion and deposition in forests - a model analysis1985In: Atmospheric Environment, ISSN 1352-2310, E-ISSN 1873-2844, Vol. 19, no 2, p. 335-347Article in journal (Refereed)
    Abstract [en]

    A system of partial differential equations is developed to describe an aerosol entering from an open field into a downwind forest, where deposition and turbulent transfer affect particle concentration. The model considers the interplay between forest structure, open field and forest aerodynamics and aerosol characteristics. The modelling problem is broken down into a set of simpler submodels which can be refined or simplified individually. Model results suggest, basically, significant horizontal (vertical) depletion of super-μm particles downwind from the forest edge (downwards from the canopy top). Distinct edge effects in deposition rates are common. In certain cases vertical exchange processes predominate, leading to enrichment of the aerosol. Sub-μm particles (unless extremely small) are subject to almost negligible depletion and edge effects. Deposition of super-μm particle oriented aerosols are governed by a complex interaction between particle size, forest structure and aerodynamics whereas deposition of sub-μm particles is simply controlled by particle concentration and forest structure. Under certain conditions (dense homogenous forests) aerosol particle concentration across the open field to forest roughness transition increases again after initial depletion. 

12 1 - 50 of 75
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