...
首页> 外文期刊>Coral reefs: journal of the International Society for Reef Studies >Life history flexibility allows Sargassum polyceratium to persist in different environments subjected to stochastic disturbance events
【24h】

Life history flexibility allows Sargassum polyceratium to persist in different environments subjected to stochastic disturbance events

机译:生命史的灵活性使Sargassum polyceratium能够在遭受随机干扰事件的不同环境中持续存在

获取原文
获取原文并翻译 | 示例
           

摘要

Stochastic, stage-based matrix models were used to investigate the life history strategy of the seaweed Sargassum polyceratium in shallow intertidal and deep-water (18 m) populations. Matrix models were parameterized with 3 years of yearly transitions among four plant stages quantified from three bays on Curacao (Netherlands Antilles). There were years without a storm, with a moderate (winter) storm and with a strong storm (Hurricane Lenny). The stochastic population growth rate varied among populations (lambda(s): 0.54-1.03) but was not related to depth. The most important stages for population growth were reproductive adults (shallow) and non-reproductive adults (deep). With the occurrence of storms, vegetative growth (mainly deep) and fertility (mainly shallow) became the most important processes. Recruitment (shallow) and regeneration from holdfasts (deep) only contributed to population persistence after the hurricane. It is concluded that S. polyceratium has a flexible, depth-dependent, life history strategy that is adjusted to disturbance events.
机译:基于阶段的随机矩阵模型用于调查潮间带和深水(18 m)种群中海藻Sargassum polyceratium的生活史策略。通过从库拉索岛(荷属安的列斯)的三个海湾量化的四个植物阶段之间每年3年的过渡,对矩阵模型进行参数化。有好几年没有暴风雨,有中度(冬季)暴风雨和强暴风雨(兰尼飓风)。随机种群的增长率在各个种群之间有所不同(λ:0.54-1.03),但与深度无关。人口增长最重要的阶段是生殖成年(浅)和非生殖成年(深)。随着暴风雨的发生,营养生长(主要是深层)和肥力(主要是浅层)成为最重要的过程。飓风过后,征兵(浅层)和固守(深层)的再生仅助长了种群的持久性。结论是,S。polyceratium具有一种灵活的,深度依赖的生命史策略,可以根据干扰事件进行调整。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号