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10篇 您的检索式:作者名="Leonhard S"
    题名 作者 年代 出处 被引量
1Microbial findings at failing implants 显示文摘Leonhard A Renvert S Dahlen G 1999Clin Oral Implants Res1999,10,:1
2Mycological and histological investigations of Fraxinus excelsior nursery saplings naturally infected by Chalara fraxinea 显示文摘Schumacher J Kehr R Leonhard S 2010Forest Pathology2010,40,5:1
3Phylogeny of sheep and goat Theileria and Babesia parasites显示文摘Leonhard S Hong Y Marc J 2003Parasitol Research2003,91,:1
4Mutations in apoptosis genes: a pathogenetic factor for human disease 显示文摘Leonhard M Petra G David S 2001Mutat Res2001,488,6:1
5Importance of pro- line and other amino acids during honeybee flight - Apis mellifera carnica POLLMANN显示文摘MICHEU S CRAILSHEIM K LEONHARD B 2000Amino Acids2000,18,2:1
6Phylogeny of sheep and goat Theileria and Babesia parasites 显示文摘Leonhard S Hong Y Marc J 2003Parasitol Research2003,91,:1
7Chemiluminescence multichannel immunosensor for biodetection显示文摘ERWIN Y G LEONHARD M WALTRAUD S 2002Analytica Chimica Acta2002,475,:1
8Chemiluminescence muhichannel immunosensor for biodetection 显示文摘Erwin Y G Leonhard M Waltraud S 2002Analytica Chimica Acta2002,457,:1
9Performance evaluation of algorithms for SAW-based temperature measurement显示文摘Schuster S Scheiblhofer S Leonhard R 2006IEEE Transactions on Ultrasonics Ferroelectrics and Frequency control2006,53,6:1
10Analysing the effect of stand density and site conditions on structure and growth of oak species using Nelder trials along an environmental gradient:experimental design,evaluation methods,and results显示文摘Background: Most current approaches in forest science and practice require information about structure and growth of individual trees rather than- or in addition to- sum and mean values of growth and yield at forest stand level as provided by classic experimental designs. By inventing the wheel design, Nelder provided the possibility to turn to the individual tree as basic information unit. Such trials provide valuable insights into the dependency of growth on stand density at particular sites.Methods: Here, we present an extension of the original design and evaluation by Nelder.(i) We established Nelder wheels along an environmental gradient through Europe in atlantic climate in Belgium and Germany, Mediterranean climate in Italy, continental climate in Hungary as well as on high land climate in Mexico. Such disjunct Nelder wheels along an environmental gradient can be regarded and analysed as a two-factor design with the factors of site condition and stand density.(ii) We present an advanced statistical approach to evaluate density dependent growth dynamics of trees planted in form of the Nelder design, which considers spatio-temporal autocorrelation.(iii)We prove the usefulness of the methods in improving ecological theory concerning density related productivity,trade-offs between facilitation and competition, and allometric relations between size variables.Results: First evaluations based on remeasured Nelder wheels in oak(Quercus robur L.) show a size growth differentiation during the first observation period. In particular, height growth is accelerated under higher competition indicating facilitation effects. We detect furthermore a high variability in allometric relations.Conclusions: The proposed design, methods, and results are discussed regarding their impact on forest practice,model building, and ecological theory. We conclude that the extended Nelder approach is highly efficient in providing currently lacking individual tree level information.Enno Uhl Peter Biber Matthias Ulbricht Michael Heym Tamás Horváth Ferenc Lakatos Janós Gál Leonhard Steinacker Giustino Tonon Maurizio Ventura Hans Pretzsch 2015Forest Ecosystems2015,2,3:0
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