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首页> 外文学位 >A seed bank study at the Maricao forest reserve, a subtropical wet forest at Maricao, Puerto Rico.
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A seed bank study at the Maricao forest reserve, a subtropical wet forest at Maricao, Puerto Rico.

机译：在波多黎各Maricao的亚热带湿润森林Maricao森林保护区进行的种子库研究。

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摘要

A seed bank study was performed at an abandoned mature plantation in Maricao, Puerto Rico to examine the seed bank's contribution to the vegetation of the study site. Ten soil seed bank samples were collected five times from a 50 x 25 m area between June 1999 and November 2000. The number of individuals and the species composition of the seed bank were assessed using the seedling emergence method. A total of 839 seedlings germinated from the seed bank samples, representing 27 families and 56 species. Of the 56 species, 9 were trees, 6 were shrubs, 30 were herbs and 11 were unidentified growth forms. The number of seedlings per date sampled varied from 107 to 250. The seedling density for the study area was 250 seeds/m2, and overall, there was a high variability in the distribution of the seeds. When comparing the seed bank species composition to that of the standing vegetation, a low concordance between the two was found. There was little representation of the forest site's woody taxa in the seed bank, and this may have been due to the quick-germinating, and short-lived status of their seeds; or other factors may have been involved, as discussed further.{09} Based on the results, this study suggests that the seed bank may not be the only source of recruits for this site, and that other regeneration strategies (i.e., seed rain from adjacent areas and seedling bank) and environmental factors influence the success of forest regeneration.
机译：在波多黎各马里卡的一个废弃的成熟种植园进行了种子库研究，以检查种子库对研究地点植被的贡献。在1999年6月至2000年11月之间，从50 x 25 m的区域中收集了十份土壤种子库样品，进行了五次采样。使用幼苗出苗方法评估了种子库的个体数量和物种组成。共有839株幼苗从种子库样品中发芽，代表27个科和56种。在这56种中，有9种是树木，有6种是灌木，有30种是草药，有11种是未确认的生长形式。每个日期的幼苗数量从107到​​250不等。研究区域的幼苗密度为250种子/ m 2 ，并且总体而言，种子的分布存在很大差异。当将种子库物种组成与站立植被的组成进行比较时，发现两者之间的一致性较低。种子库中几乎没有森林地点的木质分类单元，这可能是由于种子的快速发芽和短命状态所致。 {09}基于结果，这项研究表明，种子库可能不是该地点新兵的唯一来源，而且其他再生策略（ ie < ，来自邻近区域和幼苗库的种子雨）和环境因素影响森林更新的成功。

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  • 作者

    Delgado-Romero, Denise.;

  • 作者单位

    University of Puerto Rico, Mayaguez (Puerto Rico).;

  • 授予单位 University of Puerto Rico, Mayaguez (Puerto Rico).;
  • 学科 Biology Ecology.; Agriculture Forestry and Wildlife.
  • 学位 M.S.
  • 年度 2003
  • 页码 118 p.
  • 总页数 118
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生态学（生物生态学）;森林生物学;
  • 关键词

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