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首页> 外文期刊>Southeastern naturalist >Restoration of the Endangered Ruth's Golden Aster (Pityopsis ruthii)
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Restoration of the Endangered Ruth's Golden Aster (Pityopsis ruthii)

机译：恢复濒临灭绝的Ruth的金色紫红色（Pityopsis Ruthii）

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摘要

Pityopsis ruthii, Ruth's Golden Aster, is an endangered herbaceous perennial that is endemic to small sections of the Hiwassee and Ocoee Rivers in the southeastern US. Our objective was to test the effect of bonded fiber matrix (BFM) on establishment and fecundity of Ruth's Golden Aster in order to develop a robust restoration protocol. We augmented existing populations with plants grown from achenes collected at each restoration location. We monitored plantings through 3 growing seasons by measuring stem number, stem height, leaf number, flowering incidence, and number of flower heads per plant in the spring and fall of each season. We assessed survival at 1 month post-planting. We randomly assigned plants at each location to a treatment (BFM vs. no BFM) for analysis as a randomized complete-block design. Germination rate of filled seeds, number of acclimated seedlings, and percent of seedlings planted after 14 days of acclimatization differed significantly across sites. Survival was significantly higher at 1 month, fall year 1, spring/fall year 2, and spring year 3 for the plants mulched with BFM compared to the control. However, there were no significant differences between treatment for stem number, stem height, leaf number, flowering incidence, or final 3-year survival. The methods developed herein represent a major step towards meeting the recovery-plan objective of developing the ability to establish Ruth's Golden Aster on suitable habitat. Herein, we provide a framework for augmentation or restoration of critical populations threatened by extirpation.
机译：Pityopsis Ruthii，Ruth's Golden Aster是一种濒危的草本多年生植物，对美国东南部的Hiwassee和Ocoee Rivers的小部分是流行的。我们的目标是测试粘合纤维矩阵（BFM）对Ruth的Golden Aster的建立和繁殖力的影响，以制定强大的恢复协议。我们增强了在每个恢复位置收集的achenes生长的植物的现有种群。我们通过测量茎数，茎高，叶数，开花发作和每个季节的春季下降，通过3种生长季节监测种植。我们在种植后1个月评估生存。我们随机分配给每个地点的植物到治疗（BFM与BFM），以分析为随机的完整块设计。填充种子的萌发率，适应幼苗的数量和植入后14天植入后种植的幼苗的百分比显着不同。 1个月，秋季1，春季/秋季2和春节3与对照相比，生存率为1个月，秋季1，春季/秋季2，春季3年春节3。然而，茎数，茎高，叶数，开花发病率或最终3年生存之间没有显着差异。这里开发的方法代表了满足恢复计划的主要阶段，即开发在合适的栖息地在合适的栖息地建立露丝的金色紫红色的能力。在此，我们提供了一种增强或恢复灭绝威胁的关键种群的框架。

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  • 来源
    《Southeastern naturalist》 |2018年第1期|共13页
  • 作者

    Wadl Phillip A.; Saxton Arnold M.; Call Geoff; Dattilo Adam J.;

  • 作者单位

    ARS USDA US Vegetable Lab 2700 Savannah Highway Charleston SC 29414 USA;

    Univ Tennessee Dept Anim Sci 2506 River Dr 232 Brehm Anim Sci Bldg Knoxville TN 37996 USA;

    US Fish &

    Wildlife Serv 446 Neal St Cookeville TN 38501 USA;

    Tennessee Valley Author Biol Compliance West Tower 11B-K 400 West Summit Hill Dr Knoxville TN 37902 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然地理学;
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