...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical Geography >Geographic variation of germination, growth, and mortality in sugar maple (Acer saccharum): Common garden and reciprocal dispersal experiments
【24h】

Geographic variation of germination, growth, and mortality in sugar maple (Acer saccharum): Common garden and reciprocal dispersal experiments

机译：糖槭（Acer saccharum）中发芽，生长和死亡率的地理变化：常见的花园和倒向扩散实验

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

If current temperature trends continue and increase as predicted by general circulation models, the persistence and migration of sugar maple (Acer saccharum) at its northern limit will become crucial to its continued existence in North America. Specifically, anthropogenic warming may affect germination success and growth of sugar maple. To evaluate this potential limitation, our study addresses two questions. The first involves a growth chamber: Do temperatures at and above (1°, 7°, and 14° C) sugar maple's optimal germination temperature affect its germination? The second involves a common garden: Do sugar maple germination and subsequent growth and mortality rates show evidence of geographic variation under current climatic conditions? While sugar maple germinated successfully at 7° C in the lab, field results suggest that other environmental variables may limit its future establishment as climate changes. Germination of seeds from sugar maple's northern range limit was significantly reduced under warmer conditions, and subsequent seedling mortality rates were significantly increased when grown at a more southerly latitude. Local adaptation was evident with respect to germination, survival, and growth in the field. Ultimately, results from this study further the understanding of how predicted anthropogenic climate change may affect the regeneration of sugar maple in the future.
机译：如果当前的温度趋势如一般循环模型所预测的那样继续并增加，则糖蜜枫树（北枫）的持久性和迁移将对其在北美的持续生存至关重要。具体而言，人为升温可能会影响发芽成功和糖枫的生长。为了评估这种潜在的局限性，我们的研究解决了两个问题。第一个涉及一个生长室：糖枫的最佳发芽温度（1°，7°和14°C或更高）会影响其发芽吗？第二个涉及一个共同的花园：糖枫的发芽以及随后的生长和死亡率是否显示出在当前气候条件下地理差异的证据？虽然糖枫在实验室中于7°C成功发芽，但田间研究结果表明，其他环境变量可能会限制其随着气候变化的未来发展。在较温暖的条件下，糖枫的北部射程极限处的种子发芽会大大减少，并且在偏南的纬度下生长时，随后的幼苗死亡率会大大提高。在发芽，存活和田间生长方面，局部适应是明显的。最终，这项研究的结果进一步了解了预测的人为气候变化将如何影响未来糖枫的再生。

著录项

相似文献

  • 外文文献
  • 中文文献
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