Simulated Photovoltaic Solar Panels Alter the Seed Bank Survival of Two Desert Annual Plant Species.
Simulated Photovoltaic Solar Panels Alter the Seed Bank Survival of Two Desert Annual Plant Species.
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DOI：
10.3390/plants9091125
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发表时间：
2020-08-31
期刊：
影响因子：
--
通讯作者：
Moore-O'Leary KA
中科院分区：
文献类型：
--
作者：
Hernandez RR;Tanner KE;Haji S;Parker IM;Pavlik BM;Moore-O'Leary KA
种子库生存是植物种群持续生存的基础，但关于种子库性状-环境互作的研究较少。由于太阳能的开发，沙漠生态系统中与种子库有关的环境条件发生了变化。我们开发了一个种子库生存的概念模型，以补充使用原位种子库信息包的方法学。利用这个框架，我们量化了两个密切相关的一年生沙漠植物的种子库存活率，以及这两个物种在莫哈韦沙漠中的种子库-环境相互作用，该系统模拟了与太阳能开发相关的微生境变化。我们跟踪了埋在540个种子袋中的4860个种子，发现在两个物种的平均水平上，第一和第二个生长季的种子库存活率分别为21%和6%。在两个生长季节后，稀有的一年生的种子库存活率(10%)显著高于普通的一年生(2%)。与径流(5%)和对照(3%)相比，遮荫(10%)微生境的种子库存活率显著高于径流(5%)和对照(3%)。我们的研究使用种子库生存的新概念框架，通过稀有和常见的同系物及其环境交互作用，提供了对这一早期生命阶段的洞察。
Seed bank survival underpins plant population persistence but studies on seed bank trait-environment interactions are few. Changes in environmental conditions relevant to seed banks occur in desert ecosystems owing to solar energy development. We developed a conceptual model of seed bank survival to complement methodologies using in-situ seed bank packets. Using this framework, we quantified the seed bank survival of two closely related annual desert plant species, one rare (Eriophyllum mohavense) and one common (Eriophyllum wallacei), and the seed bank–environment interactions of these two species in the Mojave Desert within a system that emulates microhabitat variation associated with solar energy development. We tracked 4860 seeds buried across 540 seed packets and found, averaged across both species, that seed bank survival was 21% and 6% for the first and second growing seasons, respectively. After two growing seasons, the rare annual had a significantly greater seed bank survival (10%) than the common annual (2%). Seed bank survival across both species was significantly greater in shade (10%) microhabitats compared to runoff (5%) and control microhabitats (3%). Our study proffers insight into this early life-stage across rare and common congeners and their environmental interactions using a novel conceptual framework for seed bank survival.
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