Native plant abundance, diversity, and richness increases in prairie restoration with field inoculation density of native mycorrhizal amendments
Native plant abundance, diversity, and richness increases in prairie restoration with field inoculation density of native mycorrhizal amendments
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DOI：
10.1111/rec.13151
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发表时间：
2020-04-29
影响因子：
3.2
通讯作者：
Bever, James D.
中科院分区：
文献类型：
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作者：
Koziol, Liz;Crews, Timothy E.;Bever, James D.
生态恢复工作可以增加退化地区的多样性和功能。然而，目前的恢复做法通常不能重建完整的多样性和物种组成的残留植物群落。恢复质量可以通过从原生植物微生物组中重新引入关键生物来提高。特别是，被称为丛枝菌根（AM）真菌的根共生体是塑造草地群落的关键，但对人为干扰敏感，这可能会给草地恢复带来问题。菌根改良剂的研究包括每公顷2- 10，000公斤接种物的接种密度。这些研究报告了可能取决于接种物体积、组成或天然性的可变结果。在这里，我们测试了8种不同密度的原生AM真菌改良剂，范围从0到8,192公斤/公顷，在新安装的草原恢复。我们发现，本地植物的建立受益于本地菌根接种，导致本地植物的丰度，丰富度和群落多样性的改善。此外，非常低密度的本地菌根接种物的应用，建议对商业菌根产品，是无效的，需要更高的浓度，有利于本地植物的丰富性和社区多样性。这些数据表明，可能需要更高密度的菌根修正或替代分配方法，以最大限度地发挥原生菌根修正在恢复实践中的作用。
Ecological restoration efforts can increase the diversity and function of degraded areas. However, current restoration practices cannot typically reestablish the full diversity and species composition of remnant plant communities. Restoration quality can be improved by reintroducing key organisms from the native plant microbiome. In particular, root symbionts called arbuscular mycorrhizal (AM) fungi are critical in shaping grassland communities, but are sensitive to anthropogenic disturbance, which may pose a problem for grassland restoration. Studies of mycorrhizal amendments include inoculation densities of 2-10,000 kg of inocula per hectare. These studies report variable results that may depend on inocula volume, composition, or nativeness. Here we test eight different densities of native AM fungal amendment, ranging from 0 to 8,192 kg/ha in a newly installed prairie restoration. We found that native plant establishment benefited from native mycorrhizal inocula, resulting in improvements in native plant abundance, richness, and community diversity. Moreover, the application of very low densities of native mycorrhizal inocula, as suggested on commercial mycorrhizal products, were ineffective, and higher concentrations were required to benefit native plant abundance and community diversity. These data suggest that higher densities of mycorrhizal amendment or perhaps alternative distribution methods may be required to maximize benefits of native mycorrhizal amendments in restoration practices.