Age-Specific Survival, Mortality and Reproduction, and Prospects for Conservation of Limonium delicatulum

Age-Specific Survival, Mortality and Reproduction, and Prospects for Conservation of Limonium delicatulum
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补血草的年龄特异性生存、死亡率和繁殖以及保护前景

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发表时间:
1992
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影响因子:
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通讯作者:
A. Hegazy
A. Hegazy
中科院分区:
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文献类型:
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作者:
A. Hegazy

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1.补血草是一种耐盐垫状植物。对生存、死亡和繁殖进行了调查,并评估了它们对保护埃及地中海地区自然增长的人口的影响。2.计算出整个种群每年的种子总产量约为7.6万粒。约29.5%的种子具有在土壤中萌发的潜力,在这些可萌发的种子中,约有7.9%的种子具有成苗能力。幼龄植株约占幼苗的5.9%,约65%的幼体达到成熟生殖阶段。存活曲线、生命表和繁殖力时间表反映了种子和幼苗的高死亡率
1. Limonium delicatulum is a salt-tolerant cushion plant. Survival, mortality and reproduction were investigated, and their implications for the conservation of naturally growing populations in the Mediterranean region of Egypt were assessed. 2. The total annual seed output by the entire population was computed to be c. 76 000 seeds. About 29.5% of the seeds had the potential to germinate in soil, and out of these germinable seeds, about 7.9% gave seedlings. The juvenile plants comprised about 5.9% of the seedlings, while about 65% of juveniles reached mature reproductive stage.3. The survivorship curve, life table and fecundity schedule reflected high mortality of seeds and seedlings