Department of Biology
UNIVERSITY of FRIBOURG

Publications

 Publications list

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By July 2017, Heinz Müller-Schärer authored or co-authored 158 publications in internationally refereed journals with 5360 citations, h-index = 41 (28 since 2012) (google scholar).
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2017

Wang YJ, Müller-Schärer, H, van Kleunen M, Cai AM, Zhang P, Yan R, Dong BC, Yu FH. 2017. Invasive alien plants benefit more from clonal integration in heterogeneous environments than natives. New Phytologist, in press.

Sun Y, Zhou Z, Wang R and Müller-Schärer H. 2017. Biological control opportunities of ragweed are predicted to decrease with climate change in East Asia. Biodiversity Science, in press.

Slodowicz, D., Kikodze, D., Khutsishvili, M., Kalatozishvili, L., Müller-Schärer, H. 2017. Monitoring invasive alien plants in Protected Areas in Georgia. Bulletin of the Georgian National Academy of Sciences, in press.

Bonini M, Gentili R and Müller-Schärer H. La gestione di ambrosia ed i potenziali benefici e rischi di Oprhaella communa in Nord-Italia: i ricercatori incontrano gli stakeholder.(English version: Ragweed management and the potential benefits and risks of Ophraella communa in Northern Italy: researchers meet their stakeholders). Notiziario della Società Botanica Italiana, 0: 1-10 (2016), Download

Müller-Schärer H, Schaffner U and the COST-SMARTER Task Force Ophraella. COST-SMARTER and risk assessment of Ophraella communa. Notiziario della Società Botanica Italiana, 0: 1-10 (2016), Download

Sun Y, Brönnimann O and Müller-Schärer H. Climatic suitability of the accidentally introduced leaf beetle Ophraella communa in Europe: a potential biological control candidate for ragweed. Notiziario della Società Botanica Italiana, 0: 1-10 (2016), Download

Lommen STE, Augustinus BA, Schaffner U, Müller-Schärer H and the COST-SMARTER Task Force Ophraella, the COST-SMARTER Task Force Population Dynamics. Development and impact of Ophraella communa in Europe. Notiziario della Società Botanica Italiana, 0: 1-10 (2016), Download

Sun Y, Brönnimann O, Roderick GK, Poltavsky A, Lommen STE and Müller-Schärer H. 2017. Climatic suitability ranking of biological control candidates: a biogeographic approach for ragweed management in Europe. Ecosphere, 8(4):e01731. 10.1002/ecs2 .1731, Download Appendix

Lommen STE, Jolidon EF, Sun Y, Bustamante Eduardo JI and Müller-Schärer, H. 2017. An early suitability assessment of two exotic Ophraella species (Coleoptera: Chrysomelidae) for biological control of invasive ragweed in Europe. European Journal of Entomology, 114: 160–169, Download

Virag von. A, Bon MC, Closca C, Diaconu A, Haye T, Weiss RM, Müller-Schärer H and Hinz H. 2017. Phenology and temperature dependent development of Ceutorhynchus assimilis, a potential biological control agent for Lepidium draba. Journal of Applied Entomology, 141, 219-230, Download

2016

Lommen STE, Ciappetta S, Ghiani A, Asero R, Gentili R, Müller-Schärer H and Citterio S. 2016. Defoliation of common ragweed by Ophraella communa beetle does not affect pollen allergenicity in controlled conditions. Plant Biosystems, Download

Stutz S, Hinz HL, Konowalik K, Müller-Schärer H, Oberprieler Ch and Schaffner U. 2016. Ploidy level in the genus Leucanthemum correlates with resistance to a specialist herbivore. Ecosphere, 7(9) article e01460 Download

Sun Y, Müller-Schärer H and Schaffner U. 2016. Neighbour origin and ploidy level drvie impact of an alien invasive plant species in a competitive environment. PLoS ONE, 11(5): e0155712. doi:10.1371/journal.pone.0155712, Download

Stutz S, Štajerová K, Hinz HL, Müller-Schärer H and Schaffner U. 2016. Can enemy release explain the invasion success of the diploid Leucanthemum vulgare in North America? Biological Invasions, 18: 2077-2091 Download

Rosche Ch, Durka W, Hensen I, Mráz P, Hartmann M, Müller-Schärer H, Lachmuth S. 2016. The population genetics of the fundamental cytotype-shift in invasive Centaurea stoebe s.l.: genetic diversity, genetic differentiation and small-scale genetic structure differ between cytotypes but not between ranges. Biological Invasions,  18: 1895-1910 Download

2015   

Augustinus BA, Guarino MF, Colombo F, Citterio S, Schaffner U, Müller-Schärer H, Gentili R. 2015. Nuove segnalazioni di Ambrosia artemisiifolia e Ophraella communa in valtellina (Alpi Centrali, Lombardia). «NATURA BRESCIANA» Ann. Mus. Civ. Sc. Nat. Brescia, 2015, 39: 45-48. Download

Bonini M, Šikoparija B, Prentovi? M, Cislaghi G, Colombo P, Testoni C, Grewling ?, Lommen S , Müller-Schärer H, Smith M. 2015. Brief communication: A follow-up study examining airborne Ambrosia pollen in the Milan area in 2014 in relation to the accidental introduction of the ragweed leaf beetle Ophraella communa. Aerobiologia, in press

Bonini M, Šikoparija B, Prentovi? M, Cislaghi G, Colombo P, Testoni C, Grewling ?, Lommen S , Müller-Schärer H, Smith M. 2015. Is the recent decrease of airborne Ambrosia pollen in the Milan area due to the accidental introduction of the ragweed leaf beetle Ophraella communa? Aerobiologia, 31:499–513. Download Change The World, One Article At A Time (by Springer)- Best 2015 journal paper addressing the world’s most pressing challenges.

Sun Y, Müller-Schärer H, Maron JM, Schaffner U. 2015. Origin matters: diversity affects the performance of alien invasive species but not of native species. The American Naturalist, 185:725-736. Download

Essl F, Biro K, Brandes D, Broennimann O, Bullock, J, Chapman D, Chauvel B, Dullinger S, Fumanal B, Guisan A, Karrer G, Kazinczi G, Kueffer Ch, Laitung B, Lavoie C, Leitner M, Moser D, Müller-Schärer H, Petitpierre B, Richter R, Schaffner U, Smith M, Starfinger U, Vautard R, Vogl G, von der Lippe M, Follak S. 2015. Biological Flora of the British Isles: Ambrosia artemisiifolia. Journal of Ecology, 103, 1069-1098. Download

Sun Y, Müller-Schärer H, Maron JM, Schaffner U. 2015. Bio-geographic effects on early establishment of an invasive alien plant. American Journal of Botany, 104:1-5. Download Appendices

Thalmann DJK, Kikodze D, Khutsishvili M, Kharazishvili D, Guisan A, Broennimann O and Müller-Schärer H. 2015. Areas of high conservation value in Georgia: present and future threats by invasive alien plants. Biological Invasions,17:1041-1054 Download

2014

Müller-Schärer H, Lommen S. 2014.EU-COST Aktion über „Nachhaltige Bekämpfung von Ambrosia artemisiifolia in Europa“ (COST FA1203-SMARTER): Chancen und Herausforderungen. Julius-Kühn-Archiv, 445:148-155. Download

Mráz P, Tarbush E and Müller-Schärer H. 2014. Drought tolerance and plasticity in the invasive Centaurea stoebe s.l. (Asteraceae): effect of populations stronger than those of cytotype and range. Annals of Botany, 114: 289-299. Download

Sun Y, Müller-Schärer H and Schaffner U. 2014. Plant neighbours rather than soil biota determine impact of an alien plant invader. Functional Ecology, 28: 1545- 1555. Download

Müller-Schärer H, Lommen STE, Rosellini M, Bonini M, Boriani M, Bosio G and Schaffner U. 2014. Ophraella communa, the ragweed leaf beetle, has successfully landed in Europe: fortunate coincidence or threat? Weed Research, 54: 109-119. Download

Broennimann O, Mráz P, Petitpierre B, Guisan A and Müller-Schärer H. 2014. Contrasting spatio-temporal climatic niche dynamics during the eastern and western invasions of spotted knapweed in North America. Journal of Biogeography, 41: 1126-1136. Download

2013

 Boriani M, Calvi M, Taddei A, Tantardini A, Cavagna B, Spadoni Andreani F, Montagna M, Lommen S and Müller-Schärer H. 2013. Ophraella communa segnalata in Italia su Ambrosia, L'Informatore agrario 34, 2. (in Italian) Download

 Maron JL, Waller LP, Hahn MA, Diaconu A, Pal RW, Müller-Schärer H, Klironomos JN and Callaway RM. 2013. Effects of soil fungi, disturbance and propagule pressure on exotic plant recruitment and establishment at home and abroad. Journal of Ecology,101: 924-932. Download

 Sun Y, Collins AR, Schaffner U and Müller-Schärer H. 2013. Dissecting impact of plant invaders: do invaders behave differently in the new range? Ecology, 94(10): 2124–2130. Download Appendices

 Hahn MA, Lanz T, Fasel D and Müller-Schärer H. 2013. Increased seed survival and seedling emergence in a polyploid plant invader. American Journal of Botany, 100(8):1555-1561. Download

Hahn MA and Müller-Schärer H. 2013. Cytotype differences modulate eco-geographical differentiation in the widespread plant Centaurea stoebe. Ecology, 94(5):1005–1014. Download

 Collins AR, Thalmann D and Müller-Schärer H. 2013. Cytotypes of Centaurea stoebe found to differ in root growth using growth pouches. Weed Research, 53(3):159-169. Download

Asadi G, Ghorbani R, Karimi J, Bagheri A and Müller-Schärer H. 2013. Host Impact and Specificity of Tortoise Beetle (Cassida rubiginosa) on Canada Thistle (Cirsium arvense) in Iran. Weed Technology, 27(2): 405-411 Download

 Eschen R,  Müller-Schärer H and Schaffner U. 2013. Plant interspecific differences in arbuscular  mycorrhizal colonization as a result of soil carbon addition. MycorrhizaJan, 23(1):61-70. Download

2012

 Hahn MA, van Kleunen and Müller-Schärer H. Increased phenotypic plasticity to climate may have boosted the invasion success of polyploid Centaurea stoebe. PLoS ONE 7(11): e50284.doi:10.1371/journal.pone.0050284. Download

Hahn MA, Buckley YM and Müller-Schärer, H. 2012. Increased population growth rate in invasive polyploid Centaurea stoebe in a common garden. Ecology Letters, 15, 947-954. Download

 Mráz P, Španiel S, Keller A, Bowmann G, Farkas A, Šingliarová B, Rohr RP, Broennimann O and Müller-Schärer H. 2012. Anthropogenic disturbance as a driver of microspatial and microhabitat segregation of cytotypes of Centaurea stoebe and cytotype interactions in secondary contact zones. Annals of Botany, 110: 615–627. Download; Supplementary

 Mráz P, Garcia-Jacas N, Gex-Farbry E , Susanna A, Barres L and Müller-Schärer H. Allopolyploid origin of highly invasive Centaurea stoebe s.l. (Asteraceae). Molecular Phylogenetics and Evolution, 62: 612-623. Download 

 Collins AR and Müller-Schärer H. 2012. Influence of plant phenostage and ploidy level on oviposition and feeding of two specialist herbivores of spotted knapweed, Centaurea stoebe. Biological Control, 60: 148-153. Download

 Müller-Schärer H and Collins AR. 2012. Integrated Weed Management.  Encyclopedia of Environmental Management (ed. Jorgensen, S.E.) Taylor and Francis, New York. Download

2011

 Callaway RM, Waller LP, Diaconu A, Pal, R, Collins AR, Mueller-Schaerer H, Maron JL. 2011. Escape from competition: neighbors reduce C. stoebe performance at home but not away. Ecology, 92: 2208-2213. Download

 Collins AR, Naderi R and Müller-Schärer H.  2011. Competition between cytotypes changes across a longitudinal gradient in Centaurea stoebe L. (Asteraceae). American Journal of Botany, 98(12): 1935-1942. Download

 Simberloff D. 2011. Non-natives: 141 scientists object. Nature (Correspondence) 475: 36. Download 

 Gerber E, Schaffner U, Hinz HL, Gassmann A, Seier M and Müller-Schärer H. 2011. Prospects for biological control of Ambrosia artemisiifolia in Europe: learning from the past. Weed Research 51(6), 559-573. Download Appendix

 Treier, U. A. and Müller-Schärer, H. 2011, Differential effects of historical migration, glaciations and human impact on the genetic structure and diversity of the mountain pasture weed Veratrum album L. Journal of Biogeography, 38: 1776-1791. Download 

Schaffner U, Ridenour WM, Wolf VC, Bassett T, Caroline Müller C, Müller-Schärer H, Sutherland S, Lortie CJ, and Callaway RM. 2011. Plant invasions, generalist herbivores, and novel defense weapons. Ecology, 94, 829-835. Download 

Mraz P, Bourchier R, Treier U, Schaffner U, Müller-Schärer H. 2011. Polyploidy in phenotypic space and invasion context: a morphometric study of Centaurea stoebe. International Journal of Plant Sciences 3, 386–402. Download  

Thébault A, Gillet F, Müller-Schärer, H and Buttler A. 2011. Polyploidy and invasion success: trait trade-offs in native and introduced cytotypes of two Asteraceae species. Plant Ecology 212, 315-325. Download 

2010

Henery ML, Bowman G, Mráz  P, Treier, UA, Gex-Fabry E, Schaffner, U and Müller-Schärer H. 2010. Evidence for a combination of pre-adapted traits and rapid adaptive change in the invasive plant Centaurea stoebe. Journal of Ecology, 98, 800-813. Download 

 Rapo C, Müller-Schärer H, Vrieling K and Schaffner U. 2010. Is there rapid evolutionary response in introduced populations of tansy ragwort, Jacobaea vulgaris, when exposed to biological control? Evolutionary Ecology 25(6), 1081-1099. Download

 Bischoff, A., Steinger, T. and Müller-Schärer, H. 2010. The importance of plant provenance and genotypic diversity of seed material used for ecological restoration. Restoration Ecology, 18, 338-348. Download 

Crémieux L, Bischoff A, Müller-Schärer H and Steinger T. 2010. Gene flow from foreign provenances into local plant populations: fitness consequences and implications for biodiversity restoration. American Journal of Botany 97, 94-100. Download

 Bischoff A and Müller-Schärer H. 2010. Testing population differentiation in plant species: how important are environmental maternal effects. Oikos, 119, 445-454. Download

2009 

Broz AK, Manter, DK, Bowman G, Müller-Schärer H and Vivanco, JM. 2009. Plant origin and ploidy influence gene expression and life cycle characteristics in an invasive weed. BMC Plant Biology 9:33 (doi:10.1186/1471-2229-9-3380). Download Appendix1 Appendix2

Spiegelberger T. · Müller-Schärer H. · Matthies D. · Schaffner U.· Sawdust addition reduces the productivity of nitrogen-enriched mountain grasslands. Restoration Ecology 17 (6), 865 -872. Download 

 Eschen R, Müller-Schärer H & Schaffner U. 2009. Aboveground environment type, soil nutrient content and arbuscular mycorrhizal fingi explain establishment success of Centaurea jacea on ex-arable land and in late-successional grasslands. Plant and Soil, DOI 10.1007/s11104-009-9899-y. Download 

 Treier, U.A., Broennimann, O., Normand, S., Guisan, A., Schaffner, U., Steinger, T. and Müller-Schärer, H. 2009. Shift in cytotype frequency and niche space in the invasive plant Centaurea maculosa. Ecology 90 (5), 1366-1377. Download 

2008

Hesse, E., Rees, M. and Müller-Schärer, H. 2008. Life-history variation in contrasting habitats: flowering decisions in a clonal perennial herb (Veratrum album). American Naturalist, 172, E196-E213.DownloadAccess the recommendation on F1000Prime

  Crémieux L, Bischoff A, Šmilauerová M, Lawson CL, Mortimer SR, Doležal, J, Lanta, V, Edwards AR, Brook, AJ, Tscheulin T, Macel M, Lepš J, Müller-Schärer H and Steinger T. 2008. Resistance of local and foreign plant populations to antagonists across a continental scale. New Phytologist, 180, 524-533. Download Commentary

 Bischoff, A., Steinger, T. and Müller-Schärer, H. 2008. The importance of plant provenance and genotypic diversity of seed material used for ecological restoration. Restoration Ecology,18, 338-348. Download

 Müller-Schärer H. · Schaffner U. · Classical biological control : exploiting enemy escape to manage plant invasions. Biological Invasions 10, 859-874. Download

 Handley R.J. · Steinger T. · Treier U.A. · Müller-Schärer H.· 2008. Regional differences in exposure-time to plant disease : testing the Evolution of Inceased Competitive Ability (EICA) hypothesis in a novel framework. Ecology, 89, 407-417. Download

 Salzmann · Handley R.J. · Müller-Schärer H. · Functional significance of triazine-herbicide resistance in defence of Senecio vulgaris against a rust fungus. Basic and Applied Ecology 9, 577-587. Download

2007

 Broennimann O. · Treier U.A · Müller-Schärer H. · Thuiller W. · Peterson A.T. · Guisan A. · Evidence of climatic niche shift during biological invasion. Ecology Letters 10, 701-709. Download

 Smit C. · Vandenberghe C.H. · den Ouden J. · Müller-Schärer H.· Effect of grazing pressure on associational resistance. Oecologia 152, 265-273. Download

 Hesse E. · Rees M. · Müller-Schärer H. ·Seed bank persistence of clonal weeds in contrasting habitats : implications for control. Plant Ecology 190, 233-243. Download

 Macel M. · Lawson C.S. · Mortimer S.R. · Šmilauerova M. · Bischoff A. · Crémieux L. · Doležal J. · Edwards A.R. · Lanta V. · Bezemer T.M. · van der Putten W.H. · Igual J.M. · Rodriguez-Barrueco C. · Müller-Schärer H. · Steinger T. · Climate versus soil factors in local adaptation of two common plant species. Ecology 88, 424-433. Download

 Smit C. · Gusberti M. · Müller-Schärer H. · Safe for tree saplings, safe for seeds? Forest Ecology and Management 237, 471-477. Download

2006

Gvritishvili M., Kikodze D. and Müller-Schärer H. 2006. Preliminary data on fungal antagonists of False Hellebore (Veratrum album ssp. Lobellianum) in Georgia and their potential as effective biocontrol agents. Proc. Georgian Acad. Sci. Biol. Ser. B., 110-113. Download

Bischoff A., Crémieux L., Smilauerova M., Lawson C.L., Mortimer S.R., Doležal J., Lanta V., Edwards E.A., Brook A.J., Macel M., Leps J., Steinger T. and Müller-Schärer H. 2006. Detecting local adaptation in widespread grassland species – the importance of scale and local plant community. Journal of Ecology 94, 1130-1142. Download

Kleijn D. and Müller-Schärer H. 2006. The relation between unpalatable species, nutrients and plant species richness in Swiss montane pastures. Biodiversity and Conservation 15, 3971-3982. Download

Spiegelberger T., Matthies D., Müller-Schärer H. and Schaffner U. 2006. Scale-dependent effects of land use on plant species richness of mountain grassland in the European Alps. Ecography 29, 541-548. Download Appendix

Bischoff A.,Vonlanthen B., Steinger T. and Müller-Schärer H. 2006. Seed provenance matters – effects on germination of four plant species used for ecological restoration on arable land. Basic and Applied Ecology 7, 347-359. Download

Frantzen J. and Müller-Schärer H. 2006. Modeling the impact of a biocontrol agent, Puccinia lagenophorae, on interactions between a crop, Daucus carota, and a weed. Biological Control 37, 301-306. Download

Smit C., den Ouden J. and Müller-Schärer H. 2006. Unpalatable plants facilitate tree sapling survival in wooded pastures. Journal of Applied Ecology 43. 305-312. Download

Eschen R., Müller-Schärer H. and Schaffner U. 2006. Soil carbon addition affects growth of plants in a species-specific way. Journal of Applied Ecology 43, 35-42. Download

2005

Smit C., Béguin D., Buttler A. and Müller-Schärer H. 2005. Safe sites for tree regeneration in wooded pastures : A case of associational resistance? Journal of Vegetation Science 16, 209-214. Download

2004

 Kleijn D., Treier U. and Müller-Schärer H. 2004. The importance of nitrogen and carbohydrate storage for plant growth of the alpine herb Veratrum album. New Phytologist 166, 565-575. Download

  Müller-Schärer H., Schaffner U. and Steinger T. 2004. Evolution in invasive plants: implications for biological control. Trends in Ecology and Evolution 19 , 417-422. Download  Access the recommendation on F1000Prime

 Müller-Schärer H. and Steinger T. 2004. Predicting evolutionary change in invasive, exotic plants and its consequences for plant-herbivore interactions, In : Genetics, Evolution and Biological Control (edited by Ehler L.E., Sforza R. and Mateille T.). CABI Publishing, Wallingford, UK, 137-162. Download

2003

 Müller-Schärer H. Lässig R. and Hirsch Hadorn G. 2003. Interdisziplinärität auf dem prüfstand. GAIA 12 (4), 241-242. 

 Haldimann P., Steingr T. and Müller-Schärer H. 2003. Low genetic differentiation among seasonal generations in Senecio vulgaris as revealed by AFLP analysis. Molecular Ecology 12: 2541-2551Download

 Grace B.S. and Müller-Schärer H. 2003. Managing crop-weed interactions: Biological control of Senecio vulgaris in carrots (Daucus carota). Basic and Apllied Ecology 4: 375-384. Download

2002

 Steinger T., Haldimann P.,Leiss K. and Müller-Schärer H. 2002. Does natural selection promote population divergence? A comparative analysis of population structure using amplified fragment length polymorphism markers and quantitative traits. Molecular Ecology 11 : 2583-2590Download

 Frantzen J., Rossi F. and Müller-Schärer H. 2002. Integration of biological control of Senecio vulgarisinto chemical weed control. Weed Science, 50, 787-793Download

 Müller-Schärer H. 2002. Biologische Verfahren. In : Unkraut : Biologie und Bekämpfung (P. Zwerger und H.U. Ammon, eds.) Ulmer Verlag, Stuttgrt, 118-131Download

 Müller-Schärer H. 2002. Principles of integrated pest management with emphasis on weeds. In : Encyclopedia of Pest Management, (ed. Pimentel D), Marcel Dekker, Inc., New YorkDownload

2001

Müller-Schärer, H. (2001). Editorial: Finding solutions for biological control of weeds in European crop systems. BioControl, 46(2), 125-126. Download

Scheepens P.C., Müller-Schärer H. and Kempenaar C. 2001. Opportunities for biological weed control in Europe. BioControl 46 (2), 127-138. Download

 Schaffner U., Kleijn D., Brown V. and Müller-Schärer H. 2001. Veratrum album L. in montane grasslands : a model system for implementing biological control in land management practices of high biodiversity habitats. Biocontrol News and Information 22 (1), 19-28. Download

 Leiss K. and Müller-Schärer H. 2001. Adaptation of Senecio vulgaris to ruderal and agricultural habitats. American Journal of Botany 88, 1593-1599. Download

 Leiss K. and Müller-Schärer H. 2001. Performance of reciprocally sown populations of Senecio vulgarisfrom ruderal and agricultural habitats. Oecologia 128, 210-216. Download

 Frischknecht P.M., Schuhmacher K., Müller-Schärer H. and Baumann T.W. 2001. Phenotypic plasticity of Senecio vulgaris : from contrasting habitat types : growth and pyrrolizidine alkaloid formation. Journal of Chemical Ecology 27 (2), 343-358. Download

 Frantzen J. and Müller-Schärer H. 2001. The system management approach of biological weed control : theory and application. BioControl 46 (2), 139-155. Download

 Leiss K. and Müller-Schärer H. 2001. Population dynamics of the annual plant Senecio vulgaris and the rust fungus Puccinia lagenophorae at ruderal and agricultural habitats. Basic and Applied Ecology 2, 53-64. Download

 Wyss G.S. and Müller-Schärer H. 2001. Effects of selected herbicides on the germination and infection process of Puccinia lagenophorae, a biocontrol agent of Senecio vulgaris. Biological Control 20, 160-166. Download

 Müller-Schärer H. and Fischer M. 2001. Genetic structure of Senecio vulgaris in relation to habitat type and population size. Molecular Ecology 10, 17-28. Download

2000

 Hinz H.L. and Müller-Schärer H. 2000. Suitability of two root-mining weevils for the biological control of scentless chamomile, Tripleurospermum perforatum, with special regard to potential non-target effects. Bulletin of Entomological Research 90 497-508. Download

 Hinz H.L. and Müller-Schärer H. 2002. Influence of host condition on the performance of Rhopalomyian. sp. (Diptera : Cecidomyiidae), a biological control agent for Tripleutospermum perforatum(Asteraceae). Biological Control, 18, 147-156. Download

 Müller-Schärer H., Scheepens P. and Greaves M. 2000. Biological control of weeds in European crops : recent achievements and future work. Weed Research (25th Anniversary Jubilee edition) 40, 83-98. Download

1999

 Guadagnini M., Herzig R., Erismann K.H. and Müller-Schärer H. 1999. In-vitro-Züchtung, Selektion und Erprobung von metall-akkumulierenden Tabakvarianten zur Bodensanierung. TerraTech 6, 52-54. Download

 Wyss E., Villiger M. and Müller-Schärer H. 1999. The potential of three native insect predators to control the rosy apple aphid, Dysaphis plantaginea. BioControl 44, 171-182. Download

 Wyss G.S. and Müller-Schärer H. 1999. Infection process and resistance in the weed pathosystemSenecio vulgaris L.- Puccinia lagenophorae Cooke, and implications for biological control. Canadian Journal of Botany 77, 361-369. Download

 Frey J.E., Müller-Schärer H., Frey B. and Frei D. 1999. Complex relation between triazine susceptible phenotype and genotype in the weed Senecio vulgaris may be caused by chloroplast DNA polymorphism. Theoretical and Applied Genetics 99, 578-586. Download

 Frantzen J. and Müller-Schärer H. 1999. Wintering of the biotrophic fungus Puccinia lagenophoraewithin the annual plant Senecio vulgaris : implications for biological weed control. Plant Pathology 48, 483-490. Download

 Ammon H.U. and Müller-Schärer H. 1999. Prospects for combining biological weed control with integrated crop production systems, and with sensitive management of alpine pastures in Switzerlant. Journal of Plant Diseases and Protection 106 (2), 213-220. Download

 Wyss E., Villiger M., Hemptinne J.L. and Müller-Schärer H. 1999. Effects of augmentative releases of eggs and larvae of the two-spot ladybird beetle, Adalia bipunctata, on the abundance of the rosy apple aphid, Dysaphis plantaginea, in organic apple orchards. Entomologia Experimentalis et Applicata 90, 167-173. Download

1998

 Guadagnini M., Herzig R.,  Erismann K.H. and Müller-Schärer H.1998. Im Labor gezüchtete Pflanzen für die Bodensanierung. BioWorld 3, 3-6. Download

 Frantzen J. and Müller-Schärer H. 1998. A theory relating focal epidemics to crop-weed interaction. Phytopathology 88, 180-184. Download

 Müller-Schärer H. and Rieger S. 1998. Epidemic spread of the rust fungus Puccinia lagenophorae and its impact on the competitive ability of Senecio vulgaris in celeriac during early development. Biocontrol Science and Technology, 8 59-72. Download

 Wyss G. S. andMüller-Schärer H. 1998. Puccinia lagenophorae as a classical biocontrol agent for common groundsel (Senecio vulgaris) in the United States? Phytopathology 88, S99.

1997

 Weiner J., Martinez S., Müller-Schärer H., Stoll P. and Schmid B. 1997. How important are environmental maternal effects in plants? a study with Centaurea maculosa. Journal of Ecology 85, 133-142. Download

 Müller-Schärer H. and Scheepens P.C. 1997. Biological control of weeds in crops : a co-ordinated European research programme. Integrated Pest Management Reviews 2 (2) 45-50. Download

1996

 Müller-Schärer H. and Frantzen J. 1996. An emerging system management approach for biological weed control in crops : Senecio vulgris as a research model. Weed Research 36, 483-491. Download

 Müller-Schärer H. 1996. Interplanting ryegrass in winter leek : effect on weed control, crop yield and allocation of N-fertiliser. Crop Protection, 15, 641-648. Download

1995

 Müller-Schärer H. and Brown V.C. 1995. Direct and indirect effects of above- and below-ground insect herbivory on plant density and performance of Tripleurospermum perforatum during early plant succession. Oikos 72, 36-41. Download

1994

 Saner M., Jeanneret P. and Müller-Schärer H. 1994. Interactions among a root mining moth, a stemm mining weevil, and the phenostage of their host plant, Linaria dalmatica (L.) Mill. (Scrophulariaceae). Biocontrol Science and Technology 4, 215-222. Download

 Saner M. and Müller-Schärer H. 1994. Impact of root mining by Eteobalea spp. on clonal growth and reproduction of common toadflax, Linaria vulgaris Mill. Weed Research 34, 199-204. Download

 Landau I., Müller-Schärer H. and Ward P. 1994. The influence of cnicin, a sesquiterpene lactone ofCentaurea maculosa on specialist and generalist insect herbivores. Journal of Chemical Ecology 20, 929-942. Download

 Müller-Schärer H. and Wyss G.S. 1994. Das Gemeine Kreuzkraut (Senecio vulgaris L.) : Problemunkrautart und Möglichkeiten der biologischen Bekämpfung. Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz, Sonderheft XIV, 201-209. Download

1993

 Schroeder D., Müller-Schärer H. and Stinson C.S.A. 1993. A European weed survey in ten major crops to indentify targests for biological control. Weed Research 33, 449-458. Download

 Müller-Schärer H. and Schroeder D. 1993. The biological control of Centaurea spp. in North America : do insects solve the problem? Pesticide Science 37, 343-353. Download

1992

 Steinger T. and Müller-Schärer H. 1992. Physiological and growth responses of Centaurea maculosa(Asteraceae) to root herbivory under varying levels of interspecific plant competition and soil nitogen availability. Oecologia 91, 141-149. Download

1991

 Müller-Schärer H., Lewinsohn T.M. and J. Lawton. 1991. Searching for weed biocontrol agents : when to move on? Biocontrol Science and Technology 1, 271-280. Download

 Müller-Schärer H., Lehr C., Klein M. and Marquardt K. 1991. Gel-electrophoretic description of European populations of Terellia virens (Loew) (Dip. : Tephritidae), and implications for its use as biological control agent of Centaurea spp. (Asteraceae) in North America. Experientia 47, 859-864. Download

 Müller-Schärer H. 1991. Pflanzenreaktionen auf Wurzelherbivoren, Variationen, Ursachen und Mechanismen : Experimente an zweijährigen Kompositen. In : Populationsbiologie der Pflanzen (B. Schmid and J. Stöcklin, eds.). Birkhäuser Verlag Basel ; chapter 17 : 281-297. Download

 Müller-Schärer H. 1991. The impact of root herbivory as a function of plant density and competition : survival, growth and fecundity of Centaurea maculosa (Compositae) in field plots. Journal of Applied Ecology 28, 759-776. Download

1990

 Müller-Schärer H., Nuessly G.S. and Goeden R.D. 1990. Natural enemies and host-plant asynchrony contributing to the failure of the introduced moth Coleophora parthenica Meyrick (Lepidoptera : Coleophoridae) to control Russian thistle. Agriculture, Ecosystems and Environment 32, 133-142. Download

 Müller-Schärer H. and Goeden R.D. 1990. Parasitoids acquired by Coleophora parthenica (Lepidoptera : Coleophoridae), ten years after its introduction into Southern California for the biological control of Russian thistle. Entomophaga 35, 257-268. Download

1989

 Müller-Schärer H., Stinson C.A.S., Marquardt K. and Schröder D. 1989. The entomofaunas of roots ofCentaurea maculosa Lam., C. diffusa Lam. and C. vallesiaca Jordan in Europe : Niche separation in space and time. Journal of Applied Entomology 107, 83-95. Download

 Müller-Schärer H. 1989. Growth pattern of diploid and tetraploid spotted knapweed, Centaurea maculosa Lam. (Compositae) and effects of the root-mining moth Agapeta zoegana (L.) (Lep. : Cochylidae). Weed Research 29, 103-111. Download

 Müller-Schärer H. 1989. Structural analysis of the phytophagous insect guilds associated with the roots of Centaurea maculosa Lam., C. diffusa Lam., and C. vallesiaca Jordan in Europe : 1. Field observations. Oecologia 78, 41-52. Download/span>

1988

 Müller-Schärer H., Schröder D. and Gassmann A. 1988. Agapeta zoegana (L.) (Lep. Cochylidae), a suitable prospect for biological control of spotted and difuse knapweed, Centaurea maculosa Lam. and C. diffusa Lam. (Compositae) in Canada. Can. Entomol. 120, 109-124. Download

1987

 Goeden R.D., Ricker D.W. and Müller-Schärer H. 1987. Introduction, recovery, and limited establishment of Coleophora klimeschiella (Lepidoptera : Coleophoridae) on Russian thistles, Salsola australis, in Southern California. Environ. Entomol. 16, 1027-1029. Download

1985

 Toth M., Guerin P.M., Buser H.-R., Müller-Schärer H., Scocs G., Sciraki G. and Arn H. 1985. Z-11-Tetradecenyl acetate : Sex attractant of Agapeta zoegana (Lep. Cochylidae), a potential species for the biological control of knapweed. Can. Entomol. 117, 1163-1165. Download

1983

 Müller-Schärer H. 1983. Untersuchungen zur Eignung von Stenodes straminea Haw. (Lep Cochylidae) für die biologische Bekämpfung von Centaurea maculosa Lam. gefleckte Flockenblume) (Compositae) in Kanada. Mitt. Schweiz. Entomol. Ges. 56, 329-342. Download


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Cytotypes of Centaurea stoebe found to differ in root growth using growth pouches
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