HEИндивидуална стипендия2023–2026

Soil Fauna MIND · Soil micro- and mesofauna as drivers of microbial necromass dynamics

„Хоризонт Европа“ — Действия „Мария Склодовска-Кюри“

Период: 2023-09-01 → 2026-02-28
Финансиране от ЕС: 211 186 €
Участници: 1
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Микро- и мезофауната в почвата, като например малките членестоноги, влияят върху разграждането на органичната материя и въглеродния цикъл. Разбирането на тези процеси помага да се установи как изчезването на определени групи организми поради глобалните промени променя съхранението на въглерода в земята.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Soil micro- and mesofauna as drivers of microbial necromass dynamics

Soils hosts the majority of biodiversity and are the largest terrestrial carbon reservoir. Soil carbon cycling is driven by the decomposition and utilisation of organic matter by soil organisms. Current conceptual frameworks and models focus on the role of soil microorganisms (fungi and bacteria) while the role of bigger organisms, the fauna, is currently overlooked. My MSCA project aims at advancing our understanding of the mechanistic role of soil micro- and mesofauna in soil carbon cycling and soil organic matter dynamics. By manipulating the composition of microarthropod communities, my goal is to determine how the loss of specific organism groups resulting from global changes can influence soil carbon cycling. The objectives of this project are: - to develop a method to separate different soil microarthropod groups (slow decomposers, fast decomposers, predators) for subsequent experiments - to determine how the structure of soil microarthropod communities (and the loss of these specific groups) influences soil carbon cycling. Impact will be primarily made through scientific publications and conference presentations.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Increasing soil carbon (C) sequestration is critical to mitigate climate change while supporting food security and reversing land degradation. Soil microbial necromass, i.e. dead microbes, has received increasing attention as significantly contributing to stable soil C. The microbiome itself is controlled by soil fauna, through two main trophic groups: microbivores, directly affecting its size and composition, and litter decomposers, modulating its access to resources. However, on-going environmental changes are altering trophic relationships and how this will impact microbial dynamics and C persistence is highly uncertain. My novel contribution to science will be to integrate soil micro- and mesofauna as a dynamic modulator of the soil microbiome, controlling microbial necromass and C persistence. To achieve this, I will manipulate soil micro- and mesofauna in microcosms experiments following two complimentary approaches, i.e., manipulation based on (1) size or (2) trophic classes. I will track the incorporation of 13C-labelled root litter into microbial biomass and necromass and compare microbial growth and carbon use efficiency, in the presence or absence of different soil faunal groups. After one year of incubation, I will measure C stability indicators (mineral-associated and occluded C, bulk δ15N) as well as newly formed microbial necromass to estimate soil C persistence. The experiment will be carried out at two different temperatures (ambient vs 5 °C increase) in a full factorial design to determine how the faunal control of the microbiome might change under future climate conditions. My MSCA project will shed light on the importance of soil fauna and trophic interactions for microbial necromass and soil C dynamics, a crucial approach in harnessing the potential for soil C sequestration and implementing effective management strategies.

Оригинален текст от CORDIS (на английски).

Участници

KONINKLIJKE NEDERLANDSE AKADEMIE VAN WETENSCHAPPEN - KNAW · AMSTERDAMКоординаторНидерландия