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Developing methods of assisted natural regeneration for restoring foundational desert plants
Arid Land Research and Management ( IF 1.4 ) Pub Date : 2019-08-07 , DOI: 10.1080/15324982.2019.1649320
Scott R. Abella 1 , Lindsay P. Chiquoine 1 , James F. Weigand 2
Affiliation  

Abstract Assisted natural regeneration (ANR) is a restoration and management technique for enhancing the natural recruitment of desired species. To test ANR strategies in an arid environment, we applied irrigation and shelters to natural seedlings of the ecologically foundational shrub Larrea tridentata to enhance revegetation of a disturbed site in the Mojave Desert, USA. Irrigation did not improve seedling survival and growth. Shelters reduced 2-year survival by 31% but tripled height growth of surviving seedlings. Utility of shelter for ANR thus hinged on uncertain tradeoffs among seedling survival, height growth, and implementation costs. Mixed results suggest that further evaluating other combinations of treatments and with different species is required to understand ANR’s potential for restoration in arid lands.

中文翻译:

开发用于恢复基础沙漠植物的辅助自然更新方法

摘要 辅助自然再生(ANR)是一种恢复和管理技术,用于增强所需物种的自然补充。为了在干旱环境中测试 ANR 策略,我们对生态基础灌木 Larrea tridentata 的天然幼苗进行灌溉和遮蔽,以增强美国莫哈韦沙漠受干扰地点的重新植被。灌溉并没有改善幼苗的存活和生长。庇护所将 2 年存活率降低了 31%,但使存活幼苗的高度增长增加了两倍。因此,ANR 庇护所的效用取决于幼苗存活率、高度增长和实施成本之间的不确定权衡。混合结果表明,需要进一步评估其他处理组合和不同物种,以了解 ANR 在干旱地区恢复的潜力。
更新日期:2019-08-07
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