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您的检索式：作者名="Anne Atlan"
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| 1 | Evolution of germination strategy in the invasive species Ulex europaeus显示文摘Aims The study of the adaptive potential of the germination patterns of invading species enables us to identify some traits linked with their capacity to colonize new sites,and to gain a better understanding of their area of distribution.The aim of this study is to determine the germination pattern of Ulex europaeus,a cosmopolitan invasive species,in relation to temperature and to explore its potential evolu-tion and invasiveness in a tropical region,following its introduction from Europe.Methods We studied the germination pattern of U.europaeus(the com-mon gorse)to test both physical dormancy and germination capacity within the range of temperatures found in the native and invasive regions.To understand its germination pattern and its evolution,the rate and the speed of germination,as well as the percentage of seeds that became mouldy during the experi-ment,have been compared between a native habitat,France and a habitat into which it has been introduced,the tropical island of La Reunion.Important Findings The results show that gorse seeds germinate in large quantities,pos-sess the ability to germinate under a wide range of temperatures and they confirm the physical dormancy of the seeds(caused by seed coat impermeability).The decrease in germination from 25℃ upwards,coupled with an increase in the rate of moulding help to explain its restricted distribution at altitude in tropical environments.For scari-fied seeds,we have not detected any difference between the two regions,neither in the percentage of germinated seeds,nor in the per-centage of mouldy seeds.However,seeds from Reunion germinate faster at 20℃ than seeds from France and a greater number of seeds from Reunion are able to germinate without scarification(10-60%for Reunion versus 0-10%for France).These results suggest that while preserving the advantages of the native habitat,in Reunion gorse develops a strategy which favours the rapid occupation of new sites. | Nathalie Udo Michèle Tarayre Anne Atlan | 2017 | Journal of Plant Ecology2017，10，2： | 4 |
| 2 | Climatic niche shift of an invasive shrub (Ulex europaeus): a global scale comparison in native and introduced regions显示文摘认识近期扩张的外来入侵物种将有助于了解在当前全球变化的时间尺度上,气候生态位如何漂移。本文中,我们研究了在世界和区域范围内,入侵灌木(常见的金雀花,Ulex europaeus)气候生态位漂移问题,用以评估其如何有助于增加入侵性。根据28,187个已存数据库,利用9种物种分布模型(SDM)的组合评估区域气候生态位,包括原产区域(西欧)和世界不同的引种地区(西北美洲、南美、北欧、澳洲和新西兰)。尽管金雀花生长要求的年均气温在4℃-22℃之间,年降水量超过300毫米,然而适合金雀花生长的生物气候条件范围非常广泛。基于原产地与引种地的SDM比较分析,我们发现在北-西美洲、南美和澳洲部分地区的金雀花生态位扩张,评估了其在北欧的生态位置换情况。这些生态位的改变使金雀花在澳洲、北欧、北美洲及南美洲的潜在占据面积分别增加了49%、111%、202%和283%。相反,我们在新西兰没有发现生态位变化的证据,那里的气候条件与原产地环境(西欧)相似。本研究强调在区域尺度上,金雀花生态位扩张和置换如何增加其入侵性。金雀花生态位向新的气候条件的变化可能与其适应可塑性或遗传进化有关,这可能也解释了为何金雀花的入侵性如此之高。综合考虑生态位漂移的可能性对于改善入侵植物的管理和控制至关重要。 | Mathias Christina Fawziah Limbada Anne Atlan | 2020 | Journal of Plant Ecology2020，13，1： | 2 |
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