• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oryx >Identifying target species and seed sources for the restoration of threatened trees in southern Brazil
【24h】

Identifying target species and seed sources for the restoration of threatened trees in southern Brazil

机译：确定巴西南部受威胁树木恢复的目标物种和种子来源

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

Ecological restoration of trees is often constrained by limited knowledge of the biology, propagation and management requirements of individual species. Consequently, restoration initiatives rarely incorporate less well-known species or those that are difficult to source and grow. We describe challenges associated with the restoration of threatened trees in the Araucaria Forest of southern Brazil, and analyse the effectiveness of methods used to define target species, identify seed sources and generate information on the phenology of rare or threatened tree species. A review of secondary data identified 71 rare or threatened taxa as targets for seed collection. We then surveyed 68.7 km of trails in 26 forest remnants, identifying and mapping 1,027 seed-producing trees of 38 species. Surveys confirmed the scarcity of several tree species (including seven species with an abundance of <0.04 individuals per km), and nine species showed no signs of fruiting during 3 years of phenological monitoring. These findings, together with limited knowledge and application of optimal seed collection methods, are significant factors impeding the recovery of these species within their natural habitat. Wider application of the results of this case study could support restoration of the Araucaria Forest with seedlings from a wider diversity of species.
机译：树木的生态恢复通常受到对单个物种的生物学，繁殖和管理要求的了解有限。因此，恢复计划很少纳入鲜为人知的物种或难以采购和生长的物种。我们描述了与巴西南部南洋杉森林中受威胁树木的恢复相关的挑战，并分析了用于定义目标物种，识别种子来源并生成有关稀有或受威胁树木物种物候的信息的方法的有效性。对辅助数据的审查确定了71种稀有或濒临灭绝的类群为种子收集的目标。然后，我们对26个森林遗迹中的68.7公里步道进行了调查，确定并绘制了38种1027棵种子生产树木。调查证实了几种树种的稀缺性（包括七种树种，每公里＜0.04个人），而九种树种在3年的物候监测中未见结果。这些发现，加上有限的知识和最佳种子收集方法的应用，是阻碍这些物种在其自然栖息地中恢复的重要因素。该案例研究结果的更广泛应用可以支持用来自更广泛物种的幼苗恢复南洋杉森林。

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