珍稀濒危树木肋花的首次离地萌发和扩散机制

IF 1.7 4区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION
R. Pillco Huarcaya, Marvin López Morales, L. ÁLVAREZ-ALCÁZAR, A. Whitworth
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引用次数: 0

摘要

背景和研究目的栖息地的丧失和气候变化加速了残余和稀有树种的灭绝。哥斯达黎加Pleodedron costricense是一种极度濒危的树木,在南太平洋哥斯达黎加只有四个成熟的个体。随着另外三棵树的发现,我们开始更多地了解哥斯达黎加P.costricense的自然历史,并尝试首次成功发芽。方法从两棵树上采集果实,并在研究地点的苗圃中进行初步发芽试验。我们还在其中一棵结果母树上使用了相机捕捉器,以了解该物种的自然传播机制。结果尽管受到无脊椎动物过度捕食的困扰,我们还是能够发芽并生产出59棵树苗,准备恢复种植。摄像机捕捉到五种以水果为食的哺乳动物,还有一种灵长类动物可能将水果用作外用药物。结论肋脊藻可以在体外繁殖,使用刺激激素有可能获得更大的成功。为了提高生产率,未来的工作应该集中在保护发芽的种子和树苗免受种子捕食者的侵害。我们还发现了许多潜在的天然哺乳动物种子散布者,主要分布在Procyonidae家族中。对保护的影响鉴于我们已经掌握了繁殖知识,Osa保护组织积极恢复树苗以帮助增加种群数量,以及对两棵结果母树的严格保护,现在有可能为这种极度濒危物种取得积极的保护成果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The First Ex-Situ Germination and Dispersal Mechanisms of the Rare, Critically Endangered Tree, Pleodendron costaricense
Background and Research aims The extinction of relict and rare tree species is accelerated by habitat loss and climate change. Pleodendron costaricense is a critically endangered tree, with only four mature individuals known in Southern Pacific Costa Rica. With the discovery of three additional trees, we set out to learn more about P. costaricense’s natural history and attempt the first successful germination. Methods We collected fruits from two trees and carried out preliminary germination trials in a nursery at the study site. We also used camera traps in one of the fruiting mother-trees to understand natural dispersal mechanisms of the species. Results Although plagued by excessive levels of invertebrate predation, we were able to germinate and produce 59 saplings ready for restoration planting. Five mammal species were detected on the camera traps feeding on the fruits, along with one primate potentially using the fruits as a topical medicine. Conclusion P. costaricense can be propagated ex-situ, potentially with greater success using stimulating hormones. To improve production rates, future efforts should focus on the protection of germinating seeds and saplings from seed predators. We also identified numerous potential natural mammalian seed dispersers, mostly in the family Procyonidae. Implications for Conservation Given the propagation knowledge we have developed, the active restoration efforts of the saplings by Osa Conservation to help increase population numbers, and the strict protection of the two fruiting mother trees, there is now the possibility to attain a positive conservation outcome for this critically endangered species.
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来源期刊
Tropical Conservation Science
Tropical Conservation Science BIODIVERSITY CONSERVATION-
CiteScore
3.60
自引率
5.90%
发文量
16
审稿时长
>12 weeks
期刊介绍: Tropical Conservation Science is a peer-reviewed, open access journal that publishes original research papers and state-of-the-art reviews of broad interest to the field of conservation of tropical forests and of other tropical ecosystems.
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