id:"swepub:oai:lup.lub.lu.se:eaaad15c-817d-46e8-af40-a5004602d226"
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- Leizeaga, AinaraLund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Department of Biology,Faculty of Science,Centre for Environmental and Climate Science (CEC),Microbial Ecology,Lund University Research Groups (author)
Using a tropical elevation gradient to evaluate the impact of land‐use intensity and forest restoration on the microbial use of organic matter under climate change
- Article/chapterEnglish2022
Publisher, publication year, extent ...
- 2022
- 16 s.
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- LIBRIS-ID:oai:lup.lub.lu.se:eaaad15c-817d-46e8-af40-a5004602d226
- https://lup.lub.lu.se/record/eaaad15c-817d-46e8-af40-a5004602d226URI
- https://doi.org/10.1029/2021GB007109DOI
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- Language:English
- Summary in:English
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- We investigated how legacies of land use and climate affected the microbial use of organic matter (OM) along a tropical climate gradient in Ethiopia. Four levels of land-use intensity ranging from croplands to pristine forests were assessed along a gradient from cool and moist high altitude (MAT = 16°C, MAP = 2,200 mm) to hot and dry lowland sites (MAT = 20°C, MAP = 1,050 mm). We resolved the biomass, structure, and growth rates of microbial decomposer communities together with the rates of carbon (C) and nitrogen (N) transformation. To target the legacies of climate and land use, samples were assessed at optimal moisture and standardized temperature in the laboratory. Microbial biomass and the fungal-to-bacterial ratio increased with both legacies of drier climates and higher land-use intensities. In contrast, fungal growth rates increased in humid climates, but were unaffected by land use. The ratio of C mineralization to gross N mineralization decreased with higher humidity and more intensive land use, suggesting a change in microbial resource use from more nutrient-poor to nutrient-rich OM. Mineralization of nutrient-poor OM implied a lower nutrient availability to microbes in arid climates and low-intensity land uses, while the mineralization of nutrient-rich OM in humid sites and higher intensity land uses implied a higher microbial nutrient availability there. The difference in respiration between land uses increased with ecosystem aridity, suggesting that OM turnover and soil fertility were more impacted by land use in drier climates. Together, our results suggest that drier subtropical climates will exacerbate the negative effects of land-use intensification on OM turnover and nutrient provisioning for plants.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap Klimatforskning hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Climate Research hsv//eng
- LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske Markvetenskap hsv//swe
- AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries Soil Science hsv//eng
Added entries (persons, corporate bodies, meetings, titles ...)
- Duran, CleliaLund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science(Swepub:lu)cl2020du (author)
- Hicks, LetticeLund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Mikrobiell biogeokemi i Lund,Department of Biology,Faculty of Science,Centre for Environmental and Climate Science (CEC),Microbial Ecology,Lund University Research Groups,Microbial Biogeochemistry in Lund(Swepub:lu)le2505hi (author)
- Sandén, HansUniversity of Natural Resources and Life Sciences, Vienna (author)
- Wondie, MAmhara Agricultural Research Institute (author)
- Rousk, JohannesLund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Mikrobiell biogeokemi i Lund,Department of Biology,Faculty of Science,Centre for Environmental and Climate Science (CEC),Microbial Ecology,Lund University Research Groups,Microbial Biogeochemistry in Lund(Swepub:lu)mbio-jnr (author)
- MEMEGBiologiska institutionen (creator_code:org_t)
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- In:Global Biogeochemical Cycles36:40886-6236
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