Bacterial and fungal communities in a degraded ombrotrophic peatland undergoing natural and managed re-vegetation.
Bacterial and fungal communities in a degraded ombrotrophic peatland undergoing natural and managed re-vegetation.
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经过自然和托管再植物的降解的泥土泥炭地中的细菌和真菌群落。
DOI：
10.1371/journal.pone.0124726
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Sen R
中科院分区：
文献类型：
--
作者：
Elliott DR;Caporn SJ;Nwaishi F;Nilsson RH;Sen R
英国拥有全球15-19%的高地全营养（雨养）泥炭地，估计可储存32亿吨碳，是生物多样性和生态系统服务提供方面的重要高地栖息地。净产量取决于泥炭形成泥炭藓的生长和微生物分解之间的不平衡，微生物分解受到寒冷，酸性和厌氧条件的限制。在南奔宁山脉，土地利用变化，排水，以及超过200年的人为N和重金属沉积，导致严重的泥炭地退化表现为植被的损失，使裸露的泥炭容易受到侵蚀和深沟。旨在恢复泥炭水文、稳定性和功能性的恢复方案包括通过重新种植保育草、矮灌木和泥炭藓重新种植植被。我们的目标是通过高通量rRNA基因测序，在退化的裸泥炭，长期稳定的植被泥炭，自然和管理的泥炭层的表面顶生/中生的细菌和真菌群落。与长期植被地区相比，裸露的泥炭微生物组具有显著更高水平的贫营养标记门（酸杆菌，疣微菌，TM 6）和较低的拟杆菌和放线菌，以及更高的木质素分解担子菌。与其他地区相比，在裸露的泥炭中检测到较少的不同微生物序列和显著较少的可培养微生物。微生物群落结构与恢复活动和土壤变量（如水分和重金属）相关。虽然快速的社区变化是显而易见的恢复活动后，恢复裸露的泥炭没有接近一个类似的微生物群落结构，非侵蚀地区，即使在25年后，这可能与稳定的历史沉积的重金属污染在长期稳定的地区。这些初步研究结果进行了讨论，裸泥炭贫养，植被恢复，根际微生物-土壤相互作用，C，N和P循环，恢复的轨迹，以及生态系统服务的泥炭地恢复的影响。
The UK hosts 15–19% of global upland ombrotrophic (rain fed) peatlands that are estimated to store 3.2 billion tonnes of carbon and represent a critical upland habitat with regard to biodiversity and ecosystem services provision. Net production is dependent on an imbalance between growth of peat-forming Sphagnum mosses and microbial decomposition by microorganisms that are limited by cold, acidic, and anaerobic conditions. In the Southern Pennines, land-use change, drainage, and over 200 years of anthropogenic N and heavy metal deposition have contributed to severe peatland degradation manifested as a loss of vegetation leaving bare peat susceptible to erosion and deep gullying. A restoration programme designed to regain peat hydrology, stability and functionality has involved re-vegetation through nurse grass, dwarf shrub and Sphagnum re-introduction. Our aim was to characterise bacterial and fungal communities, via high-throughput rRNA gene sequencing, in the surface acrotelm/mesotelm of degraded bare peat, long-term stable vegetated peat, and natural and managed restorations. Compared to long-term vegetated areas the bare peat microbiome had significantly higher levels of oligotrophic marker phyla (Acidobacteria, Verrucomicrobia, TM6) and lower Bacteroidetes and Actinobacteria, together with much higher ligninolytic Basidiomycota. Fewer distinct microbial sequences and significantly fewer cultivable microbes were detected in bare peat compared to other areas. Microbial community structure was linked to restoration activity and correlated with soil edaphic variables (e.g. moisture and heavy metals). Although rapid community changes were evident following restoration activity, restored bare peat did not approach a similar microbial community structure to non-eroded areas even after 25 years, which may be related to the stabilisation of historic deposited heavy metals pollution in long-term stable areas. These primary findings are discussed in relation to bare peat oligotrophy, re-vegetation recalcitrance, rhizosphere-microbe-soil interactions, C, N and P cycling, trajectory of restoration, and ecosystem service implications for peatland restoration.
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影响因子：
5.2
作者：
Churchland C;Grayston SJ
通讯作者：
Grayston SJ
影响因子：
5
作者：
Clymo, R. S.;Bryant, C. L.
通讯作者：
Bryant, C. L.
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y
DOI：
10.1073/pnas.1000080107
发表时间：
2011-03-15
影响因子：
11.1
作者：
Caporaso, J. Gregory;Lauber, Christian L.;Knight, Rob
通讯作者：
Knight, Rob
影响因子：
6.6
作者：
Bengtsson-Palme, Johan;Ryberg, Martin;Nilsson, R. Henrik
通讯作者：
Nilsson, R. Henrik