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您的检索式：作者名="Neta Manela"
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| 1 | 季节性火烧塑造了东地中海地区林地的可萌发种子库群落显示文摘本研究探索了在典型东地中海林地中,季节性火烧是否以及如何与微生境类型(即黄连木属(Pistacia)灌木下、岩蔷薇属(Cistus)灌木下或林冠间隙)相互作用,从而影响可萌发种子库(germinable soil seed bank,GSSB)群落的组成。我们进行了一项野外实验,其中包括预定的春秋火烧,然后利用从火烧地块和相邻未火烧对照地收集的土壤样本对种子萌发的模式进行定量。研究结果表明,秋烧期间,土壤温度比春烧的要高,而春烧期间土壤温度则比秋烧的变化更大。火烧导致可萌发种子库整体的密度、丰富性和多样性降低。秋烧地块内黄连木属和岩蔷薇属灌木的可萌发种子库丰富性和多样性显著降低,这些模式主要表现在一年生植物中。在火烧样地收集的样本中,低矮灌木的可萌发种子库密度更高,在黄连木属和岩蔷薇属灌木下采集的样品中,这种模式更为明显。在季节性火烧与出现的独特物种会共同导致可萌发种子库的群落组成发生显著的变化。这些结果表明,季节性火烧与空间异质性互相作用,主要通过对一年生植物和低矮灌木的可萌发密度的差异效应来影响可萌发种子库群落的组成。这些研究发现意味着,过去几十年东地中海盆地的季节性火烧频率上升,可能转化为进化生态选择压力的变化,并对这一独特生态系统内的植物产生影响。 | Neta Manela Hagai Shemesh Yagil Osem Yohay Carmel Chanoch Soref Anat Tsafrir Ofer Ovadia | 2022 | Journal of Plant Ecology2022，15，1： | 0 |
| 2 | Smoke interacts with fire history to stimulate soil seed bank germination in Mediterranean woodlands显示文摘Aims Fire has important consequences on vegetation dynamics.In fire-prone areas,natural selection favors plant species,characterized by a large soil seed bank,and that their germination is stimu-lated by fire.Although seed germination stimulated by fire heat is common in the eastern Mediterranean Basin,only little is known about germination stimulation by smoke.We examined the inter-active effect of aerosol smoke and fire history on the germina-ble soil seed bank(GSSB)community in eastern Mediterranean woodlands.Methods We collected soil samples from sites that have been subjected to different fire frequencies during the last four decades and exposed them to aerosol smoke,with or without watering.By document-ing the seed germination patterns characterizing these samples,we could test for changes in the abundance and richness of the germi-nable seeds in the soil.Important Findings Total GSSB density was higher in sites that were burned more fre-quently during the last four decades.Exposure to aerosol smoke increased the GSSB density,and this pattern was more pronounced in samples originating from sites burned more frequently,as well as among annual species.Notably,exposing wet samples to aerosol smoke caused a significant reduction in GSSB density and richness.These results highlight the importance of exploring germination responses using intact soil samples,rather than synthetic seed com-munities.Moreover,our findings emphasize the important role smoke plays in shaping post-fire succession processes in the Mediterranean Basin,mainly by stimulating the germination of annual species. | Neta Manela Ella Dagon Hagai Semesh Ofer Ovadia | 2019 | Journal of Plant Ecology2019，12，3： | 0 |
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