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Translocation and population establishment of Schoenus scabripes (Cyperaceae)
Australian Journal of Botany ( IF 1.1 ) Pub Date : 2021-06-11 , DOI: 10.1071/bt20149
Cameron Milne , Stephen J. Trueman , Shahla Hosseini Bai , Alison Shapcott

Coastal ecosystems are under increasing pressure from land clearing along the east coast of Australia. Methods to mitigate the impacts of land clearing are needed, particularly for locally uncommon plants. In addition, there are significant knowledge gaps about cultivation methods for many wet-heath sedges. Translocation via salvage and relocation of plant populations is often the only viable ex situ, last-resort conservation option for populations threatened by clearing. We aimed to determine if translocation was an effective method for relocating a wild population of Schoenus scabripes, and how the use of organic mulch or a nitrogen-fixing companion plant affected survival, growth and nutrient concentrations of nursery-grown S. scabripes plants. Whole-plant translocation of S. scabripes plants was effective, with 62% survival at 50 months after installation. Survival of translocated nursery-grown plants was 35% at 27 months after installation. Organic mulch improved survival and health of field-established plants; however, companion plants did not improve plant health or survival. Stem and leaf winter potassium concentrations for mulched plants were significantly higher than for other treatments. Our case study demonstrated two establishment techniques for S. scabripes and suggested that whole-plant translocation of mature clumps is more effective than field establishment of nursery-grown plants.



中文翻译:

Schoenus scabripes(莎草科)的易位和种群建立

澳大利亚东海岸的土地清理给沿海生态系统带来了越来越大的压力。需要减轻土地清理影响的方法,特别是对于当地不常见的植物。此外,许多湿荒地莎草的栽培方法存在重大的知识空白。通过抢救和重新安置植物种群进行迁移通常是唯一可行的异地保护选择,对于受砍伐威胁的种群而言,这是最后的保护选择。我们的目的是确定是否易位是用于重新定位的野生种群的有效方法Schoenus scabripes,以及如何使用有机覆盖或固氮植物同伴影响存活,生长和苗圃种植的营养物浓度的S. scabripes植物。S. scabripes植物的全株易位是有效的,安装后 50 个月的存活率为 62%。安装后 27 个月时,易位苗圃种植植物的存活率为 35%。有机覆盖物改善了田间种植植物的生存和健康;然而,伴生植物并没有改善植物的健康或存活。覆盖植物的茎叶冬季钾浓度显着高于其他处理。我们的案例研究展示了S. scabripes 的两种建立技术,并表明成熟团块的整株易位比苗圃种植植物的田间建立更有效。

更新日期:2021-06-13
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