ORCID Profile
0000-0001-5704-4037
Current Organisation
Universidad Mayor
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Publisher: Springer Science and Business Media LLC
Date: 09-01-2023
Publisher: Springer Science and Business Media LLC
Date: 12-10-2022
DOI: 10.1038/S41586-022-05292-X
Abstract: Soils are the foundation of all terrestrial ecosystems
Publisher: Springer Science and Business Media LLC
Date: 26-04-2023
Publisher: Proceedings of the National Academy of Sciences
Date: 15-03-2019
Abstract: Belowground organisms play critical roles in maintaining multiple ecosystem processes, including plant productivity, decomposition, and nutrient cycling. Despite their importance, however, we have a limited understanding of how and why belowground bio ersity (bacteria, fungi, protists, and invertebrates) may change as soils develop over centuries to millennia (pedogenesis). Moreover, it is unclear whether belowground bio ersity changes during pedogenesis are similar to the patterns observed for aboveground plant ersity. Here we evaluated the roles of resource availability, nutrient stoichiometry, and soil abiotic factors in driving belowground bio ersity across 16 soil chronosequences (from centuries to millennia) spanning a wide range of globally distributed ecosystem types. Changes in belowground bio ersity during pedogenesis followed two main patterns. In lower-productivity ecosystems (i.e., drier and colder), increases in belowground bio ersity tracked increases in plant cover. In more productive ecosystems (i.e., wetter and warmer), increased acidification during pedogenesis was associated with declines in belowground bio ersity. Changes in the ersity of bacteria, fungi, protists, and invertebrates with pedogenesis were strongly and positively correlated worldwide, highlighting that belowground bio ersity shares similar ecological drivers as soils and ecosystems develop. In general, temporal changes in aboveground plant ersity and belowground bio ersity were not correlated, challenging the common perception that belowground bio ersity should follow similar patterns to those of plant ersity during ecosystem development. Taken together, our findings provide evidence that ecological patterns in belowground bio ersity are predictable across major globally distributed ecosystem types and suggest that shifts in plant cover and soil acidification during ecosystem development are associated with changes in belowground bio ersity over centuries to millennia.
Publisher: Springer Science and Business Media LLC
Date: 27-03-2023
Publisher: Springer Science and Business Media LLC
Date: 02-08-2019
DOI: 10.1038/S41467-019-11472-7
Abstract: Identifying the global drivers of soil priming is essential to understanding C cycling in terrestrial ecosystems. We conducted a survey of soils across 86 globally-distributed locations, spanning a wide range of climates, biotic communities, and soil conditions, and evaluated the apparent soil priming effect using 13 C-glucose labeling. Here we show that the magnitude of the positive apparent priming effect (increase in CO 2 release through accelerated microbial biomass turnover) was negatively associated with SOC content and microbial respiration rates. Our statistical modeling suggests that apparent priming effects tend to be negative in more mesic sites associated with higher SOC contents. In contrast, a single-input of labile C causes positive apparent priming effects in more arid locations with low SOC contents. Our results provide solid evidence that SOC content plays a critical role in regulating apparent priming effects, with important implications for the improvement of C cycling models under global change scenarios.
Publisher: Springer Science and Business Media LLC
Date: 05-2023
Publisher: American Association for the Advancement of Science (AAAS)
Date: 09-07-2021
Abstract: This study provides new insights into how the soil microbiome of urban greenspaces differs from surrounding natural ecosystems.
Publisher: Springer Science and Business Media LLC
Date: 27-03-2023
DOI: 10.1038/S41467-023-37428-6
Abstract: Soil contamination is one of the main threats to ecosystem health and sustainability. Yet little is known about the extent to which soil contaminants differ between urban greenspaces and natural ecosystems. Here we show that urban greenspaces and adjacent natural areas (i.e., natural/semi-natural ecosystems) shared similar levels of multiple soil contaminants (metal(loid)s, pesticides, microplastics, and antibiotic resistance genes) across the globe. We reveal that human influence explained many forms of soil contamination worldwide. Socio-economic factors were integral to explaining the occurrence of soil contaminants worldwide. We further show that increased levels of multiple soil contaminants were linked with changes in microbial traits including genes associated with environmental stress resistance, nutrient cycling, and pathogenesis. Taken together, our work demonstrates that human-driven soil contamination in nearby natural areas mirrors that in urban greenspaces globally, and highlights that soil contaminants have the potential to cause dire consequences for ecosystem sustainability and human wellbeing.
Publisher: Springer Science and Business Media LLC
Date: 03-02-2020
No related grants have been discovered for Sebastian Abades.