Mycorrhizal tree impacts on topsoil biogeochemical properties in tropical forests
(2022) In Journal of Ecology 110(6). p.1271-1282- Abstract
In tropical regions, the patterns of carbon (C) and nutrient properties among ecosystems dominated by distinct mycorrhizal associations are unknown. We aim to reveal whether the dynamics differ and the ecological drivers and ecosystem functioning implications of such differences. Based on a dataset of 97 tropical forest sites, we related EcM trees abundance (as a proxy for the transition from AM to EcM trees dominance) to different topsoil properties, climatic conditions and microbial abundance proxies through Generalized Additive Models. Higher abundances of EcM trees were correlated with higher topsoil concentrations of total nitrogen and C, extractable phosphorus and potassium, δ13C, mean annual temperature, precipitation,... (More)
In tropical regions, the patterns of carbon (C) and nutrient properties among ecosystems dominated by distinct mycorrhizal associations are unknown. We aim to reveal whether the dynamics differ and the ecological drivers and ecosystem functioning implications of such differences. Based on a dataset of 97 tropical forest sites, we related EcM trees abundance (as a proxy for the transition from AM to EcM trees dominance) to different topsoil properties, climatic conditions and microbial abundance proxies through Generalized Additive Models. Higher abundances of EcM trees were correlated with higher topsoil concentrations of total nitrogen and C, extractable phosphorus and potassium, δ13C, mean annual temperature, precipitation, microbial (bacterial and fungal) biomass and the relative abundance of saprotrophic fungi. Synthesis. Our results reveal consistent differences in carbon and nutrient content between arbuscular mycorrhizal (AM-) and EcM-dominated vegetation across the tropical biome, pointing to lower soil fertility and lower rates of C and nutrient transformation processes in EcM-dominated forests. These patterns associate with lower topsoil C accumulation when compared to AM vegetation, which contrasts with patterns reported for temperate forests. We suggest that different mechanisms of soil organic matter accumulation explain the contrasting impacts of EcM dominance on topsoil properties of temperate and tropical biomes. Global vegetation and C models should account for the contrasting impacts of distinct mycorrhizal vegetation in different climatic zones.
(Less)
- author
- Barceló, Milagros ; van Bodegom, Peter M. ; Tedersoo, Leho ; Olsson, Pål Axel LU and Soudzilovskaia, Nadejda A.
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Arbuscular mycorrhiza, carbon and nutrient cycling, ectomycorrhiza, microbial abundance, soil properties, temperate forests, topsoil carbon accumulation, tropical forests
- in
- Journal of Ecology
- volume
- 110
- issue
- 6
- pages
- 1271 - 1282
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:85126736008
- ISSN
- 0022-0477
- DOI
- 10.1111/1365-2745.13868
- language
- English
- LU publication?
- yes
- id
- 6c3be26a-52b4-4ec4-9f5c-68624bad1e58
- date added to LUP
- 2022-04-20 15:49:30
- date last changed
- 2022-06-30 16:17:19
@article{6c3be26a-52b4-4ec4-9f5c-68624bad1e58,
abstract = {{<p>In tropical regions, the patterns of carbon (C) and nutrient properties among ecosystems dominated by distinct mycorrhizal associations are unknown. We aim to reveal whether the dynamics differ and the ecological drivers and ecosystem functioning implications of such differences. Based on a dataset of 97 tropical forest sites, we related EcM trees abundance (as a proxy for the transition from AM to EcM trees dominance) to different topsoil properties, climatic conditions and microbial abundance proxies through Generalized Additive Models. Higher abundances of EcM trees were correlated with higher topsoil concentrations of total nitrogen and C, extractable phosphorus and potassium, δ<sup>13</sup>C, mean annual temperature, precipitation, microbial (bacterial and fungal) biomass and the relative abundance of saprotrophic fungi. Synthesis. Our results reveal consistent differences in carbon and nutrient content between arbuscular mycorrhizal (AM-) and EcM-dominated vegetation across the tropical biome, pointing to lower soil fertility and lower rates of C and nutrient transformation processes in EcM-dominated forests. These patterns associate with lower topsoil C accumulation when compared to AM vegetation, which contrasts with patterns reported for temperate forests. We suggest that different mechanisms of soil organic matter accumulation explain the contrasting impacts of EcM dominance on topsoil properties of temperate and tropical biomes. Global vegetation and C models should account for the contrasting impacts of distinct mycorrhizal vegetation in different climatic zones.</p>}},
author = {{Barceló, Milagros and van Bodegom, Peter M. and Tedersoo, Leho and Olsson, Pål Axel and Soudzilovskaia, Nadejda A.}},
issn = {{0022-0477}},
keywords = {{Arbuscular mycorrhiza; carbon and nutrient cycling; ectomycorrhiza; microbial abundance; soil properties; temperate forests; topsoil carbon accumulation; tropical forests}},
language = {{eng}},
number = {{6}},
pages = {{1271--1282}},
publisher = {{Wiley-Blackwell}},
series = {{Journal of Ecology}},
title = {{Mycorrhizal tree impacts on topsoil biogeochemical properties in tropical forests}},
url = {{http://dx.doi.org/10.1111/1365-2745.13868}},
doi = {{10.1111/1365-2745.13868}},
volume = {{110}},
year = {{2022}},
}