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22篇 您的检索式:作者名="Michael Seitz"
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1On the combined effect of soil fertility and topography on tree growth in subtropical forest ecosystems—a study from SE China显示文摘Aims The aim of our research was to understand small-scale effects of topography and soil fertility on tree growth in a forest biodiversity and ecosystem functioning(BEF)experiment in subtropical SE China.Methods Geomorphometric terrain analyses were carried out at a spatial resolution of 5×5 m.Soil samples of different depth increments and data on tree height were collected from a total of 566 plots(667 m2 each).The soils were analyzed for carbon(soil organic carbon[SOC]),nitrogen,acidity,cation exchange capacity(CEC),exchangeable cations and base saturation as soil fertility attributes.All plots were classified into geomorphological units.Analyses of variance and linear regressions were applied to all terrain,soil fertility and tree growth attributes.Important Findings In general,young and shallow soils and relatively small differences in stable soil properties suggest that soil erosion has truncated the soils to a large extent over the whole area of the experiment.This explains the concurrently increasing CEC and SOC stocks downslope,in hollows and in valleys.However,colluvial,carbon-rich sediments are missing widely due to the convexity of the footslopes caused by uplift and removal of eroded sediments by adjacent waterways.The results showed that soil fertility is mainly influenced by topography.Monte-Carlo flow accumulation(MCCA),curvature,slope and aspect significantly affected soil fertility.Furthermore,soil fertility was affected by the different geomorphological positions on the experimental sites with ridge and spur positions showing lower exchangeable base cation contents,especially potassium(K),due to leaching.This geomorphological effect of soil fertility is most pronounced in the topsoil and decreases when considering the subsoil down to 50 cm depth.Few soil fertility attributes affect tree height after 1-2 years of growth,among which C stocks proved to be most important while pH_(KCl)and CEC only played minor roles.Nevertheless,soil acidity and a high proportion of Al on the exchange complex affected tree height even after only 1-2 years growth.Hence,our study showed that forest nutrition is coupled to a recycling of litter nutrients,and does not only depend on subsequent supply of nutrients from the mineral soil.Besides soil fertility,topography affected tree height.We found that especially MCCA as indicator of water availability affected tree growth at small-scale,as well as aspect.Overall,our synthesis on the interrelation between fertility,topography and tree growth in a subtropical forest ecosystem in SE China showed that topographic heterogeneity lead to ecological gradients across geomorphological positions.In this respect,small-scale soil-plant interactions in a young forest can serve as a driver for the future development of vegetation and biodiversity control on soil fertility.In addition,it shows that terrain attributes should be accounted for in ecological research.Thomas Scholten Philipp Goebes Peter Kühn Steffen Seitz Thorsten Assmann Jürgen Bauhus Helge Bruelheide Francois Buscot Alexandra Erfmeier Markus Fischer Werner Härdtle Jin-Sheng He Keping Ma Pascal A.Niklaus Michael Scherer-Lorenzen Bernhard Schmid Xuezheng Shi Zhengshan Song Goddert von Oheimb Christian Wirth Tesfaye Wubet Karsten Schmidt 2017Journal of Plant Ecology2017,10,1:22
2Habitat use and diel activity pattern of the Tibetan Snowcock(Tetraogallus tibetanus):a case study using camera traps for surveying high-elevation bird species显示文摘Background:Global climate change has had significant effects on animal distribution and population dynamics in mid-latitude alpine areas,but we know little about the basic ecology of high-altitude species due to the difficulties of conducting field research in the harsh climate and habitat present at high elevations.The Tibetan Snowcock(Tetraogallus tibetanus) is a little-known phasianid distributing in alpine areas at extremely high elevations in the mountains surrounding the Tibetan Plateau.Estimating the species occupancy rate and discussing the factors affecting its distribution based on infrared-triggered camera techniques would provide both a baseline to measure the influence of global warming and valuable information on its conservation and ecology.Methods:We used infrared-triggered cameras to investigate the Tibetan Snowcock on the western slope of Mt.Gongga from June to November 2016.We used the R package 'overlap' to visualize its activity pattern,and used an occupancy model to both examine its habitat use as well as to determine the most influential variables affecting its habitat use.Results:Using 103 camera traps over 9213 camera-days,we recorded 428 instances of Tibetan Snowcock.The diel activity peaks of Tibetan Snowcock occurred during the periods of 8:00-10:00 am and 18:00-20:00 pm.The model estimate of occupancy for Tibetan Snowcock(0.830) was slightly higher than the na?ve site occupancy based on camera detections(0.663),indicating a wider use of habitat than the camera traps recorded.Elevation,slope,settlement density,road density,and EVI(enhanced vegetation index) were the most influential variables for its habitat use.Conclusions:The Tibetan Snowcock is confirmed to be diurnal.This species prefers an environment with a high elevation,gentle slope,and low EVI,apparently facing a trade-off between predator risk,foraging efficiency,and food availability.When human impact was low,there was a positive correlation between the habitat use of the Tibetan Snowcock and both its road and settlement densities.Infrared cameras and proper survey design are valuable for investigating extreme alpine phasianids.Gai Luo Chuangming Yang Huaming Zhou Michael Seitz Yongjie Wu Jianghong Ran 2019Avian Research2019,10,1:6
3A Novel Monoclonal Antibody Against DOG1 is a Sensitive and Specific Marker for Gastrointestinal Stromal Tumors显示文摘Inigo Espinosa Cheng-Han Lee Mi Kyung Kim Bich-Tien Rouse Subbaya Subramanian Kelli Montgomery Sushama Varma Christopher L. Corless Michael C. Heinrich Kevin S. Smith Zhong Wang Brian Rubin Torsten O. Nielsen Robert S. Seitz Douglas T. Ross Robert B. West 2008The American Journal of Surgical Pathology2008,,2:1
4Local endoscopic therapy for intraepithelial high-grade neoplasia and early adenocarcinoma in Barrett’s oesophagus: acute-phase and intermediate results of a new treatment approach显示文摘Andrea May Liebwin Gossner Oliver Pech Andreas Fritz Erwin Günter Gerd Mayer Hartmut Müller Gerhard Seitz Michael Vieth Martin Stolte Christian Ell 2002European Journal of Gastroenterology & Hepatology2002,,:1
5Differential expression of mucins and trefoil peptides in native epithelium, Barrett’s metaplasia and squamous cell carcinoma of the oesophagus显示文摘Claudia Labouvie José Carlos Machado Fátima Carneiro Mario Sarbia Michael Vieth Rainer Porschen Gerhard Seitz Nikolaus Blin 1999Journal of Cancer Research and Clinical Oncology1999,,2:1
6Differential expression of glutamine synthetase and cytochrome P450 isoforms in human hepatoblastoma显示文摘Andreas Schmidt Albert Braeuning Peter Ruck Guido Seitz Sorin Armeanu-Ebinger Joerg Fuchs Steven W. Warmann Michael Schwarz 2011Toxicology2011,,1:1
7Evaluation of anatomic landmarks and safe zones for screw placement in the atlas via the posterior arch显示文摘Matthias Gebauer Florian Barvencik Daniel Briem Jan P. Kolb Sebastian Seitz Johannes M. Rueger Klaus Püschel Michael Amling 2010European Spine Journal2010,,1:1
8Functional Magnetic Resonance Imaging in Prostate Cancer显示文摘Michael Seitz Amita Shukla-Dave Anders Bjartell Karim Touijer Alessandro Sciarra Patrick J. Bastian Christian Stief Hedvig Hricak Anno Graser 2009European Urology2009,,4:1
9Impact of short-term versus long-term topical steroids on corneal neovascularization after non-high-risk keratoplasty显示文摘Claus Cursiefen Hartmut Wenkel Peter Martus Achim Langenbucher Nhung X. Nguyen Berthold Seitz Michael Küchle Gottfried O. Naumann 2001Graefe’s Archive for Clinical and Experimental Ophthalmology2001,,7:1
10The Diode Laser: A Novel Side-Firing Approach for Laser Vaporisation of the Human Prostate—Immediate Efficacy and 1-Year Follow-Up显示文摘Michael Seitz Ronald Sroka Christian Gratzke Boris Schlenker Verena Steinbrecher Wael Khoder Derya Tilki Alexander Bachmann Christian Stief Oliver Reich 2007European Urology2007,,6:1
11Ex vivo and in vivo investigations of the novel 1,470 nm diode laser for potential treatment of benign prostatic enlargement显示文摘Michael Seitz Robin Ruszat Thomas Bayer Derya Tilki Alexander Bachmann Christian Stief Ronald Sroka Oliver Reich 2009Lasers in Medical Science2009,,3:1
12Ex vivo and in vivo investigations of the novel 1,470?nm diode laser for potential treatment of benign prostatic enlargement显示文摘Michael Seitz Robin Ruszat Thomas Bayer Derya Tilki Alexander Bachmann Christian Stief Ronald Sroka Oliver Reich 2009Lasers in Medical Science2009,,3:1
13The Diode Laser: A Novel Side-Firing Approach for Laser Vaporisation of the Human Prostate—Immediate Efficacy and 1-Year Follow-Up显示文摘Michael Seitz Ronald Sroka Christian Gratzke Boris Schlenker Verena Steinbrecher Wael Khoder Derya Tilki Alexander Bachmann Christian Stief Oliver Reich 2007European Urology2007,,6:1
14Value of 11 C-choline PET and PET/CT in patients with suspected prostate cancer显示文摘Bernhard Scher Michael Seitz Wolfram Albinger Reinhold Tiling Michael Scherr Hans-Christoph Becker Michael Souvatzogluou Franz-Josef Gildehaus Hans-Jürgen Wester Stefan Dresel 2007European Journal of Nuclear Medicine and Molecular Imaging2007,,:1
15New Applications of Bis(oxazoline) Ligands in Catalysis:Asymmetric 1,2-and 1,4-Addition of ZnR2 to Carbonyl Compounds显示文摘Marina Schinnerl Michael Seitz Anja Kaiser 2001Org Lett2001,3,26:1
16Laser Therapy for Upper Urinary Tract Transitional Cell Carcinoma: Indications and Management显示文摘Markus J. Bader Ronald Sroka Christian Gratzke Michael Seitz Patrick Weidlich Michael Staehler Armin Becker Christian G. Stief Oliver Reich 2009European Urology2009,,1:1
17New applications of bis(oxazoline) ligands in catalysis:asymmetric 1,2- and 1,4-addition of ZnR2 to carbonyl compounds 显示文摘Marina Schinnerl Michael Seitz Anja Kaiser 2001Org Lett2001,3,26:1
18Downregulation of carcinoembryonic antigen family member 2 expression is an early event in colorectal tumorigenesis显示文摘 Michael Seitz Eric Chastre 1997Cancer Res1997,57,9:1
19Ex vivo and in vivo investigations of the novel 1,470nm diode laser for potential treatment of benign prostatic enlargement显示文摘Michael Seitz Robin Ruszat Thomas Bayer 2009Lasers Med Sci2009,24,3:1
20Insulin-like growth factors and prostate cancer显示文摘Bob Djavan Matthias Waldert Christian Seitz Michael Marberger 2001World Journal of Urology2001,,4:1
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