Browsing by Author "Blessing Sokoya"

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Environmental filtering controls soil biodiversity in wet tropical ecosystems
(Elsevier Ltd, 2022) Haiying Cui; Peter M. Vitousek; Sasha C. Reed; Wei Sun; Blessing Sokoya; Adebola R. Bamigboye; Jay Prakash Verma; Arpan Mukherjee; Gabriel F. Peñaloza-Bojacá; Alberto L. Teixido; Pankaj Trivedi; Ji-Zheng He; Hang-Wei Hu; Kenny Png; Manuel Delgado-Baquerizo
The environmental factors controlling soil biodiversity along resource gradients remain poorly understood in wet tropical ecosystems. Aboveground biodiversity is expected to be driven by changes in nutrient availability in these ecosystems, however, much less is known about the importance of nutrient availability in driving soil biodiversity. Here, we combined a cross-continental soil survey across tropical regions with a three decades' field experiment adding nitrogen (N) and phosphorus (P) (100 kg N ha−1y−1 and 100 kg P ha−1y−1) to Hawai'ian tropical forests with contrasting substrate ages (300 and 4,100,000 years) to investigate the influence of nutrient availability to explain the biodiversity of soil bacteria, fungi, protists, invertebrates and key functional genes. We found that soil biodiversity was driven by soil acidification during long-term pedogenesis and across environmental gradients, rather than by nutrient limitations. In fact, our results showed that experimental N additions caused substantial acidification in soils from Hawai'i. These declines in pH were related to large decreases in soil biodiversity from tropical ecosystems in four continents. Moreover, the microbial activity did not change in response to long-term N and P additions. We concluded that environmental filtering drives the biodiversity of multiple soil organisms, and that the acidification effects associated with N additions can further create substantial undesired net negative effects on overall soil biodiversity in naturally tropical acid soils. This knowledge is integral for the understanding and management of soil biodiversity in tropical ecosystems globally. © 2022
Global homogenization of the structure and function in the soil microbiome of urban greenspaces
(American Association for the Advancement of Science, 2021) Manuel Delgado-Baquerizo; David J. Eldridge; Yu-Rong Liu; Blessing Sokoya; Jun-Tao Wang; Hang-Wei Hu; Ji-Zheng He; Felipe Bastida; José L. Moreno; Adebola R. Bamigboye; José L. Blanco-Pastor; Concha Cano-Diáz; Javier G. Illán; Thulani P. Makhalanyane; Christina Siebe; Pankaj Trivedi; Eli Zaady; Jay Prakash Verma; Ling Wang; Jianyong Wang; Tine Grebenc; Gabriel F. Peñaloza-Bojacá; Tina U. Nahberger; Alberto L. Teixido; Xin-Quan Zhou; Miguel Berdugo; Jorge Duran; Alexandra Rodríguez; Xiaobing Zhou; Fernando Alfaro; Sebastian Abades; Cesar Plaza; Ana Rey; Brajesh K. Singh; Leho Tedersoo; Noah Fierer
The structure and function of the soil microbiome of urban greenspaces remain largely undetermined. We conducted a global field survey in urban greenspaces and neighboring natural ecosystems across 56 cities from six continents, and found that urban soils are important hotspots for soil bacterial, protist and functional gene diversity, but support highly homogenized microbial communities worldwide. Urban greenspaces had a greater proportion of fast-growing bacteria, algae, amoebae, and fungal pathogens, but a lower proportion of ectomycorrhizal fungi than natural ecosystems. These urban ecosystems also showed higher proportions of genes associated with human pathogens, greenhouse gas emissions, faster nutrient cycling, and more intense abiotic stress than natural environments. City affluence, management practices, and climate were fundamental drivers of urban soil communities. Our work paves the way toward a more comprehensive global-scale perspective on urban greenspaces, which is integral to managing the health of these ecosystems and the well-being of human populations. Copyright © 2021 The Authors, some rights reserved.
Soil biodiversity supports the delivery of multiple ecosystem functions in urban greenspaces
(Nature Research, 2023) Kunkun Fan; Haiyan Chu; David J. Eldridge; Juan J. Gaitan; Yu-Rong Liu; Blessing Sokoya; Jun-Tao Wang; Hang-Wei Hu; Ji-Zheng He; Wei Sun; Haiying Cui; Fernando D. Alfaro; Sebastian Abades; Felipe Bastida; Marta Díaz-López; Adebola R. Bamigboye; Miguel Berdugo; José L. Blanco-Pastor; Tine Grebenc; Jorge Duran; Javier G. Illán; Thulani P. Makhalanyane; Arpan Mukherjee; Tina U. Nahberger; Gabriel F. Peñaloza-Bojacá; César Plaza; Jay Prakash Verma; Ana Rey; Alexandra Rodríguez; Christina Siebe; Alberto L. Teixido; Pankaj Trivedi; Ling Wang; Jianyong Wang; Tianxue Yang; Xin-Quan Zhou; Xiaobing Zhou; Eli Zaady; Leho Tedersoo; Manuel Delgado-Baquerizo
While the contribution of biodiversity to supporting multiple ecosystem functions is well established in natural ecosystems, the relationship of the above- and below-ground diversity with ecosystem multifunctionality remains virtually unknown in urban greenspaces. Here we conducted a standardized survey of urban greenspaces from 56 municipalities across six continents, aiming to investigate the relationships of plant and soil biodiversity (diversity of bacteria, fungi, protists and invertebrates, and metagenomics-based functional diversity) with 18 surrogates of ecosystem functions from nine ecosystem services. We found that soil biodiversity across biomes was significantly and positively correlated with multiple dimensions of ecosystem functions, and contributed to key ecosystem services such as microbially driven carbon pools, organic matter decomposition, plant productivity, nutrient cycling, water regulation, plant–soil mutualism, plant pathogen control and antibiotic resistance regulation. Plant diversity only indirectly influenced multifunctionality in urban greenspaces via changes in soil conditions that were associated with soil biodiversity. These findings were maintained after controlling for climate, spatial context, soil properties, vegetation and management practices. This study provides solid evidence that conserving soil biodiversity in urban greenspaces is key to supporting multiple dimensions of ecosystem functioning, which is critical for the sustainability of urban ecosystems and human wellbeing. © 2023, The Author(s), under exclusive licence to Springer Nature Limited.