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Linkages of elements in soils and plants with mycorrhizae along Philippine and pantropical elevational gradients

Project description

The role of fungi and nutrients in tropical mountain ecosystems

For proper growth, tropical plants require a careful balance of nutrients such as nitrogen, phosphorus, calcium, potassium, and magnesium. Fungi, particularly mycorrhizal fungi, are essential for the uptake of these elements from the soil. Although vegetation and nutrient availability in tropical mountains vary with elevation, little is known about the distribution of many essential elements and how fungi affect their availability. With the support of the Marie Skłodowska-Curie Actions programme, the PHILANTROPIC-ELEMYCO project will investigate how supply of nutrients and presence of mycorrhizal fungi vary in the Philippines tropical mountains. The goal of this study is to uncover biogeochemical patterns that are essential to preserving tropical biodiversity and ecosystem function.

Objective

Tropical mountains are biodiversity hotspots where a zonation of biota occurs with environmental conditions as one ascends. Patterns of vegetation types are well documented, as is the decline of plant-available nitrogen (N) relative to phosphorus (P) with elevation. However, how absolute and relative availabilities of essential elements beyond the well-studied N, P and carbon (C) vary in such mountains remains poorly understood, despite evidence that base cations and micronutrients do indeed affect tropical forests’ and other ecosystems’ functioning. Potentially important but overlooked factors that may confound elevational patterns of elemental availabilities are the type, dominance and abundance of mycorrhizal fungi, which in turn are also affected by biogeochemical cycling, directly or through shifts in vegetation. Here, I address these knowledge gaps by investigating patterns of C, N, P, potassium (K), calcium (Ca), magnesium (Mg) and micronutrients, and their association with mycorrhizae across three distinct Philippine tropical mountains. While fungal and particularly plant biodiversity in these areas are well documented, biogeochemical patterns remain largely unexplored. PHILANTROPIC-ELEMYCO will test the hypothesis that absolute and relative availabilities of these elements are associated with both elevation and mycorrhizae. Specifically, the project will (1) analyze concentrations and stoichiometry of species- and community-weighted leaf, litter and soil elements along elevational gradients, (2) assess the co-occurrence thereof with association type, abundance and diversity of mycorrhizae, and (3) conduct a systematic review comparing mycorrhiza-nutrient relationships among tropical regions. By uniquely integrating expertise and approaches from tropical forest ecology, biogeochemistry, botany, mycology and molecular biology, I aim to contribute to an improved understanding of plant-soil-mycorrhiza-stoichiometry patterns in tropical mountains.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-GF - HORIZON TMA MSCA Postdoctoral Fellowships - Global Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

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Coordinator

CENTRO DE INVESTIGACION ECOLOGICA Y APLICACIONES FORESTALES
Net EU contribution
€ 305 239,92
Address
UNIVERSITAT AUTONOMA DE BARCELONA EDIFICI C
08193 BELLATERRA
Spain
Region
Comunidad de Madrid Comunidad de Madrid Madrid
Activity type
Research Organisations
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Total cost
No data

Partners (1)