Extreme temporal interpolation of sparse data is not a sufficient basis to substantiate a claim to have uncovered Pleistocene forest microrefugia.
Extreme temporal interpolation of sparse data is not a sufficient basis to substantiate a claim to have uncovered Pleistocene forest microrefugia.
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稀疏数据的极端时间插值不足以证实已发现更新世森林微保护区的说法。
DOI：
10.1111/nph.12941
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Huntley B
中科院分区：
文献类型：
--
作者：
Huntley B
De Lafontaine等人(2014;这一问题的新植物学家，页。715-729）声称已经发现更新世森林microrefugia在Landes de Gascogne，法国西部，使用放射性碳定碳木炭碎片回收土壤。特别是，他们得出结论，森林水青冈（山毛榉）“通过完整的冰期和间冰期一直持续到今天”。他们引用了现存的F.来自该区域和其它地方的林化草（de Lafontaine等人，2013年），支持他们的结论，指出F。在Landes de Gascogne的森林种群“属于独特的地方性遗传谱系”（我强调）。他们还引用了来自物种分布模型的已发表证据来支持他们的结论（Svenning等人，2008年）声称表明水青冈可能在晚冰期（LPG）间隔期间在该地区持续存在。在de Lafontaine等人提出索赔之前，（2014）可以被接受，他们自己的证据和他们引用来支持他们的结论必须受到严格的审查。仔细检查表S2中的支持信息，伴随着他们的文件显示，德Lafontaine等人。（2014）只获得了9块木炭的前全新世放射性碳年代，其中5块被确定为F。其中一个给出了一个有效的无限年龄，其中四个被确定为樟子松。这九个日期的2 r校准年龄范围，如de Lafontaine等人的表S2所示。（2014年）绘制在图1中，沿着的还有两个古温度代用指标，来自GRIP冰芯的d18 O记录（Johnsen等人，2001）和从伊比利亚西北海岸获得的MD 95 -2039海洋沉积物岩心中的浮游有孔虫
De Lafontaine et al.(2014; this issue of New Phytologist, pp. 715–729) claim to have uncovered Pleistocene forest microrefugia in the Landes de Gascogne, western France, using radiocarbondated charcoal fragments recovered from soils. In particular, they conclude that Fagus sylvatica (beech)‘persisted in situ in several microrefugia through full glacial and interglacial periods up to the present day’. They cite genetic evidence of extant populations of F. sylvatica from this region and elsewhere (de Lafontaine et al., 2013) in support of their conclusion, stating that F. sylvatica populations in the Landes de Gascogne ‘belong to distinct endemic genetic lineages’(my emphasis). They also cite in support of their conclusions published evidence from species distribution models (Svenning et al., 2008) claiming to show that Fagus could have persisted in the region during the Late Pleniglacial (LPG) interval. Before the claims made by de Lafontaine et al.(2014) can be accepted, both their own evidence and that which they cite in support of their conclusions must be subjected to critical examination. Careful examination of Table S2 in the supporting information that accompanies their paper reveals that de Lafontaine et al.(2014) obtained only nine pre-Holocene radiocarbon dates on pieces of charcoal, five of which were identified as F. sylvatica, one of which gave an effectively infinite age, and four of which were identified as Pinus sylvestris. The 2r calibrated age ranges for these nine dates, as given in Table S2 of de Lafontaine et al.(2014), are plotted on Fig. 1, along with two palaeotemperature proxies, the d18O records from the GRIP ice core (Johnsen et al., 2001) and from planktonic foraminiferans from the MD95-2039 marine sediment core obtained off the coast of north-west Iberia
影响因子：
4
作者：
Fletcher, William J.;Goni, Maria Fernanda Sanchez;Tzedakis, P. C.
通讯作者：
Tzedakis, P. C.