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Pteridophytes as primary colonisers after catastophic events through geological time and in recent history
Palaeobiodiversity and Palaeoenvironments ( IF 1.4 ) Pub Date : 2021-07-31 , DOI: 10.1007/s12549-021-00492-1
Barry A. Thomas 1 , Christopher J. Cleal 2
Affiliation  

Pteridophytes reproduce by producing vast numbers of spores that may be dispersed over considerable distances, helping the plants colonise new areas. Being resistant to desiccation, fern spores can often survive for many years as spore banks in soil. After disturbance, such spores can germinate and subsequently colonise the area. These factors help pteridophytes to become primary colonisers on barren land, such as volcanic islands or land that has been devastated by some cataclysmic event. A further method of rapid colonisation is provided through the preservation and possible scattering of fragments of rhizomes in particular of horsetails. Similar rapid colonising by pteridophytes has been documented in the geological record following several major extinction events. These distinct, but short-lived, fern populations are recognisable by fern spikes in the microfossils. This paper brings together information on the reasons for pteridophyte success in colonising barren land, and examples taken from both the historic and geological records.



中文翻译:

在地质时期和近代历史中,蕨类植物在灾难性事件后作为主要的殖民者

蕨类植物通过产生大量孢子进行繁殖,这些孢子可能分散在相当长的距离内,帮助植物在新的地区定居。由于耐干燥,蕨类植物孢子通常可以在土壤中作为孢子库存活多年。在受到干扰后,这些孢子可以发芽并随后在该地区定殖。这些因素帮助蕨类植物成为贫瘠土地上的主要殖民者,例如火山岛或被某些灾难性事件摧毁的土地。另一种快速定植的方法是通过保存和可能散布根茎的碎片,特别是马尾的碎片。在几次重大灭绝事件之后,地质记录中也记录了蕨类植物类似的快速定殖。这些独特但短暂的,蕨类植物种群可以通过微化石中的蕨类尖刺来识别。本文汇集了蕨类植物成功在贫瘠土地上定居的原因的信息,以及来自历史和地质记录的例子。

更新日期:2021-08-01
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