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122篇 您的检索式:作者名="Walter Z"
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1环境变化背景下北极生物的多样性、分布及其适应性显示文摘生物个体是对气候变化和紫外线B(UV-B)辐射变化产生反应的基础,而且这种反应会在各种时间尺度上发生。北极地区的动物、植物以及微生物种类的多样性从表面上看是低的,而且从北方针叶林到极地荒漠逐渐减少,但其原始物种却很丰富。与这种物种多样性随纬向梯度减少的趋势相反,一些空间分布范围很广的单一优势物神的优势度则呈增长趋势。全球气候变暖可能会减少该地区的物种多样性,并限制到这些物种的分布范围,尤其是在该地区生物分布的北部边缘,一些极地特有的动物和植物种类会面临着灭绝的危险。最有可能侵入苔原地带的物种是那些目前生存在极地外缘的北方地区生物。许多植物都具有自身的特征使它们能够在以下环境中生存;短暂的无冰雪覆盖的生长季节,低的太阳高度角,永久冻结地带及低的土壤温度,贫乏的养分获取条件以及极少的物理扰动。以上这些特征有些可能会限制当地物种对气候变暖的反应,但其最主要的因素是这些物种与那些潜在的入侵物种相比缺乏竞争能力。北极地区陆生动物拥有许多适应特性,这使它们能够适应北极地区剧烈的温度变化。许多动物通过冬眠或迁移来逃避极地地区的恶劣天气和资源短缺。北极地区动物生存的生物环境则相对简单:几乎没有天敌、竞争者、疾病、寄生生物,但同时食物资源也很短缺。极地陆生动物可能对由气候变化带来的温暖而干旱的夏季非常不适应,这种变化将会影响到动物的迁移路线、途中栖息地,并会改变冬季积雪的状况和冻融的循环过程。气候变化还会改变动物繁殖和发育的季节,并会引来新的竞争者、捕食者、寄生生物以及疾病等。极地微生物也能很好地适应该地区的气候:一些微生物甚至在-39℃的低温下还能进行代谢活动。蓝藻细菌和藻类生物有着很广泛的适应策略,这能够使它们避免(至少可以减少)紫外线的伤害。微生物能够忍受许多环境条件,而且其生长周期很短,这些特点将使它们能很快适应新的生存环境。与此形成对比的是,极地植物和动物很可能通过改变其分布范围而不是积极的生物进化来适应环境的变暧。Terry V.Callaghan Lars Olof Bjrn Yuri Chernov Terry Chapin Torben R.Christensen Brian Huntley Rolf A.Ims Margareta Johansson Dyanna Jolly Sven Jonasson Nadya Matveyeva Nicolai Panikov Walter Oechel Gus Shaver Josef Elster Heikki Henttonen Kari Laine Kari Taulavuori Erja Taulavuori Christoph Zckler 何永涛 2004AMBIO-人类环境杂志2004,33,B11:2
2Dynamic stress concentrations for an axially loaded strut at discontinuities due to an elliptical hole or double circular notches显示文摘WILLIAM A NADER Z WALTER N 2004International Journal of Impact Engineering2004,30,3:1
3Fundamental photoelectrocatalytic and eleetrophoretic mobility studies of TiO2 and V-doped TiO2 thin- film electrode materials显示文摘Jeosadaque J S Walter A Z Marc A A 2003Journal of Physical Chemistry B2003,107,:1
4Dielectric spectroscopy in time and frequency domain for HV power equipment,part I: theoretical considerations显示文摘WALTER S Z 2003IEEE Electrical Insulation Magazine2003,19,5:1
5Workflow optimization through task redesign in business information processes显示文摘DEWAN R SEIDMANN A WALTER Z P 1998Collaboration Systems and Technology Track1998,1,1:1
6Apoptotic effect of cyanobacterial extract on rat hepatocytes and human lymphocytes显示文摘Mankiewicz J Tarczynska M Fladmark KE Doskeland SO Walter Z Zalewski M 2001Environ Toxicol2001,16,3:1
7On fast decoupled continuation power flows 显示文摘Mohn Fritz Walter de Souza A C Z 2002Electric Power Systems Research2002,63,:1
8Break - in liner wear and piston ring assembly friction in a spark - Ignited Engine 显示文摘Ma Z Naeim A H Walter B 1998Tribology Transactions1998,41,4:1
9Genotoxicity of cyanobacterial extracts containing microcystins from Polish water reservoirs as determined by SOS chromotest and comet assay显示文摘Mankiewicz J Walter Z Tarczynska M Palyvoda O Wojtysiak-Staniaszczyk M Zalewski M 2002Environ Toxicol2002,17,4:1
10Cell biology and molecular basis of denitrification 显示文摘Walter G Z 1997Microbiology and Molecular Biology Reviews1997,61,4:1
11Automation of phage display for high-throughput antibody development显示文摘Konthur Z Walter G 2002TARGETS2002,1,1:1
12Genototxicty of cyanobacterial extracts containing microcystins from Polish water reservoirs as determined by SOS chromotest and comet assay显示文摘Mankiewicz J Walter Z Tarzynska M 2002Environmental Toxicology2002,17,4:1
13Photocatalytic oxidation in the presence of microwave irradiation: observations with ethylene and water显示文摘Sho K Dean T T Walter A Z 2002J Photoch Photobio A2002,148,8:1
14The nonessential UL50 gene of avian infectious laryngot rac-heitis virus encodes a functional dU TPase which is nota virulence factor显示文摘Walter F Katharina Z Jens P T 2000Journal of General Virology2000,81,:1
15Synergistic Effect Between Two Bacteriocin-like Inhibitory Substances Produced by Lactobacilli Strains with Inhibitory Activity for Streptococcus agalactiae显示文摘Francisco O. Ruíz Gisela Gerbaldo María J. García Walter Giordano Liliana Pascual Isabel L. Barberis 2012Current Microbiology2012,,4:1
16First-line antihypertensive treatment in patients with pre-diabeles: Rationale, design and baseline results of the ADAPT invesligation显示文摘Walter Z Joachim S Stephan L 2008Cardiovascular Diabetology2008,7,1:1
17Risk profile and consumer shopping behavior in electronic and traditional channels显示文摘Gupta A Su B C Walter Z 2004Decision Support Systems2004,,38:1
18Statistical analysis of optimumFenton oxidation conditions for landfill leachate treatment显示文摘Shrawan K Singh Walter Z Tang 2013WasteManagement2013,33,1:1
19Isolation and functional analy sis of two thioredoxin peroxidases (peroxiredoxins) from Plasmo dium falciparum 显示文摘Krnajski Z Walter RD Muller S 2001Mol Biochem Parasitol2001,113,:1
20Capacitors显示文摘Walter J S Jennifer Z Frederick W M 1998IEEE Trans on Plasma Science1998,26,5:1
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