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4篇 您的检索式:作者名="J.Petit"
    题名 作者 年代 出处 被引量
1东南极Caroline冰岩芯气候学研究显示文摘本文综合研究了东南极冰盖边缘Caroline冰岩芯中以氢同位素、微粒含量、冰晶及气泡含量为参数的古气候信息。在Caroline冰岩芯中,末次冰盛期以来的记录完好。冰盛期特征是低氢同位素、高微粒含量、高气泡含量和细粒冰晶。本研究证明,在冰盖边缘冰中仍可能保留着连续的气候变化信息。姚檀栋 J.Petit J.Jouzel C.Lorius C.Duval 1992中国科学(B辑)1992,B,5:3
2南极冰盖边缘—冰芯冰晶测量及其气候意义显示文摘本文分析了东南极冰盖边缘(靠近法国冰川站)一冰芯的冰晶变化,并讨论了与冰晶相关的气候意义。对该冰芯的分析结果与附近其它冰芯的研究结果进行了比较。根据冰晶随深度的变化规律及冰晶在末次冰期的突变认为,气候条件不但影响冰晶生长速率,而且影响特定气候条件(如末次冰期)下的冰晶尺寸的变化。气候变化信息在冰盖边缘仍然保存这一事实说明,冰晶生长速率主要受冰面温度储存记忆影响这一结论也适用于冰盖边缘。姚檀栋 J.Petit 1992冰川冻土1992,14,1:1
3An enlarged set of consensus primers for the study of organelle DNA in plants显示文摘S.Dumolin‐Lapegue M.‐H.Pemonge R. J.Petit 2003Molecular Ecology2003,,4:1
4Inconsistent interspecific and intraspecific differentiation of climate envelopes in a subtropical tree显示文摘Aims Comparisons of climate envelopes among species have shown that niche conservatism tends to break down over time.Here,we use the Asian tree genus Platycarya(Juglandaceae)as a case study to test this tendency at relatively short timescales in a single lineage.This,together with a reanalysis of the extant literature,should help evaluate prospects of using correlations between climate and spe-cies occurrence data to infer evolutionary processes.Methods We rely on species distribution models(SDMs)and multivari-ate analyses to compare current and past(Last Glacial Maximum~21ka)climatic envelopes between the two extant Platycarya spe-cies(Platycarya strobilacea and Platycarya longipes)and between mainland and Taiwan populations of P.strobilacea,paying particu-lar attention to autocorrelation issues.We also review interpreta-tions provided in similar studies comparing climate envelopes between and within species,including in studies involving native and introduced populations of the same species.Important Findings We find intraspecific but not interspecific differentiation in climate envelopes of Platycarya,despite the prediction that niche differen-tiation should be stronger between older groups.Our review also suggests that differentiation in climate envelopes need not imply rapid evolutionary divergence.Whereas SDMs can be used to raise evolutionary hypotheses to be validated with other data,we con-clude that it should not be used to directly infer short-term evolu-tionary processes.Qiuchi Wan Zhuo Zheng Marta Benito-Garzón Rémy J.Petit 2019Journal of Plant Ecology2019,12,1:0
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