Plant and soil microbial community assembly processes across urban vacant lots

IF 2.2 3区环境科学与生态学 Q2 ECOLOGY Journal of Vegetation Science Pub Date : 2024-05-14 DOI:10.1111/jvs.13262

Kaho Maehara, Yuki Iwachido, Himari Katsuhara, Mahoro Tomitaka, Kensuke Seto, Masayuki Ushio, Maiko Kagami, Takehiro Sasaki

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Abstract

Questions

Numerous studies on community assembly processes have been conducted in natural ecosystems. However, we know little about community assembly processes in human-dominated urban ecosystems. Here, we asked: (1) how are the composition and functional diversity of native and exotic plant species shaped by local environment and landscape factors across urban vacant lots; and (2) how is microbial (bacterial and fungal) community composition influenced by the local environment, landscape factors, and plant species composition across urban vacant lots?

Location

We investigated 69 urban vacant lots in Yokohama, Japan.

Methods

By using a variation partitioning approach, we examined the relative importance of local environmental and landscape factors (including land use and spatial structure) in explaining variation in plant species composition and functional diversity of native or exotic species. We also explored the relative importance of local environmental and landscape factors, and plant species composition in explaining variation in microbial community composition.

Results

The spatial structure of vacant lots determined the species composition and functional diversity of plant communities, suggesting that plant community assembly is determined by dispersal limitation. However, the functional diversity of the exotic species varied randomly, which reduced the relative importance of the spatial structure of vacant lots. Plant species composition as well as the spatial structure of vacant lots were the important drivers of the composition of soil microbial communities, despite a higher proportion of unexplained variation in their composition. Finally, we found an essential contribution of earthmoving methods in explaining the variations in both plant and microbial community composition.

Conclusion

Plant and microbial community composition would be largely determined by dispersal limitation across urban vacant lots. Understanding urban community assembly is critical for predicting plant and microbial communities that play an essential role in regulating urban ecosystem functioning and services.

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城市空地上的植物和土壤微生物群落集结过程

问题在自然生态系统中进行了大量关于群落集结过程的研究。然而，我们对人类主导的城市生态系统中的群落集结过程知之甚少。在此，我们提出了以下问题：(1) 在城市空地上，本地和外来植物物种的组成和功能多样性如何受当地环境和景观因素的影响；(2) 在城市空地上，微生物（细菌和真菌）群落组成如何受当地环境、景观因素和植物物种组成的影响？地点我们调查了日本横滨市的 69 块城市空地。方法通过使用变异分区法，我们研究了当地环境和景观因素（包括土地利用和空间结构）在解释植物物种组成和本地或外来物种功能多样性变异方面的相对重要性。我们还探讨了当地环境和景观因素以及植物物种组成在解释微生物群落组成变化方面的相对重要性。结果空地的空间结构决定了植物群落的物种组成和功能多样性，这表明植物群落的组合是由扩散限制决定的。然而，外来物种的功能多样性随机变化，这降低了空地空间结构的相对重要性。植物物种组成以及空地的空间结构是土壤微生物群落组成的重要驱动因素，尽管其组成中无法解释的变异比例较高。最后，我们发现土方开挖方法在解释植物和微生物群落组成的变化方面起着至关重要的作用。结论植物和微生物群落的组成在很大程度上取决于城市空地的扩散限制。了解城市群落组合对于预测植物和微生物群落至关重要，而植物和微生物群落在调节城市生态系统功能和服务方面发挥着重要作用。

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来源期刊

Journal of Vegetation Science 环境科学-林学

CiteScore

6.00

自引率

3.60%

发文量

审稿时长

2 months

期刊介绍： The Journal of Vegetation Science publishes papers on all aspects of plant community ecology, with particular emphasis on papers that develop new concepts or methods, test theory, identify general patterns, or that are otherwise likely to interest a broad international readership. Papers may focus on any aspect of vegetation science, e.g. community structure (including community assembly and plant functional types), biodiversity (including species richness and composition), spatial patterns (including plant geography and landscape ecology), temporal changes (including demography, community dynamics and palaeoecology) and processes (including ecophysiology), provided the focus is on increasing our understanding of plant communities. The Journal publishes papers on the ecology of a single species only if it plays a key role in structuring plant communities. Papers that apply ecological concepts, theories and methods to the vegetation management, conservation and restoration, and papers on vegetation survey should be directed to our associate journal, Applied Vegetation Science journal.