The fungal ecology of seabird nesting sites in the Falkland Islands indicates a niche for mycoparasites
The fungal ecology of seabird nesting sites in the Falkland Islands indicates a niche for mycoparasites
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DOI：
10.1016/j.funeco.2018.08.005
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发表时间：
2018-12-01
期刊：
影响因子：
2.9
通讯作者：
van West, Pieter
中科院分区：
文献类型：
--
作者：
Hargreaves, Jacob;Brickle, Paul;van West, Pieter
土壤真菌群落复杂多样，在陆地生态系统中具有重要作用。由于高通量测序的发展，他们的研究已经取得了进展，这使得复杂的真菌群落可以用metabarcoding等技术来描述。福克兰群岛拥有大量繁殖的海鸟;其中一个国际公认的地区是位于西福克兰海岸的桑德斯岛。它包括巴布亚企鹅（Pygoscelis papua）、麦哲伦企鹅（Spheniscus magellanicus）、黑眉信天翁（Thalassarche melanophris）、王企鹅（Aptenodytes patagonicus）和西部跳岩企鹅（Eudyptes chrysocome chrysocome）的繁殖种群。这些网站的真菌群落进行了调查，使用真菌metabarcode的方法。我们发现，这些网站包含一个大的空间异质性，与社区占主导地位的腐食性真菌。然而，我们注意到，最丰富的物种往往是已知的真菌寄生虫。我们假设系统中的真菌群落经历了一个不同的α多样性的“繁荣-萧条”周期，这取决于繁殖种群，并由高度竞争的真菌寄生真菌驱动。(C)2018 Elsevier Ltd和英国真菌学会。All rights reserved.
Soil fungal communities are complex and heterogeneous, possessing important functions in most terrestrial ecological systems. Their study has been advanced due to the development of high-throughput sequencing, which allow for complex fungal communities to be described with techniques such as metabarcoding. The Falkland Islands contain large populations of breeding seabirds; one such internationally recognised area is Saunders Island, located off the coast of the West Falkland. It contains breeding populations of gentoo penguins (Pygoscelis papua), Magellanic penguins (Spheniscus magellanicus), black-browed albatross (Thalassarche melanophris), king penguins (Aptenodytes patagonicus) and western rockhopper penguins (Eudyptes chrysocome chrysocome). The fungal communities of these sites were investigated using a fungal metabarcode approach. We found these sites contain a large spatial heterogeneity, with communities that are dominated by saprotrophic fungi. However, we noticed that the most abundant species tended to be known mycoparasites. We hypothesise the fungal communities in system undergo a 'boom-bust' cycle of varying alpha diversity which is dependent upon the breeding populations, and driven by highly competitive mycoparasitic fungi. (C) 2018 Elsevier Ltd and British Mycological Society. All rights reserved.