H2020Индивидуална стипендия2017–2020

AGG-REST-WEB · Let restore our soils : using the soil food web to engineer the soil structure and functionning

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2017-06-01 → 2020-07-11
Финансиране от ЕС: 171 461 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Взаимоотношенията между почвените организми, като бактерии и гъби, и влиянието им върху физическата структура на почвата се анализират чрез хранителните вериги. Разбирането на тези процеси помага да се разбере как се транспортират водата, хранителните вещества и газовете в почвата.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Let restore our soils : using the soil food web to engineer the soil structure and functionning

Soil structure is crucial for soil functioning, as it provides pathways for the transport of water, nutrients and gases, and forms the habitat of soil biota. On the other hand, soil organisms largely influence soil structure. However, the interactions between soil biota and soil structure is not well studied and there are important gaps of knowledge. For example, studies on the effects of soil organisms on soil structure mainly focused on ecosystem engineers, such as earthworms and ants among soil animals and microbes, namely bacteria and fungi. However, soil contains a densely packed soil biodiversity and interactions between individuals are commonplace. Since few years, trophic interactions emerged as being central to explain soil functioning, notably biochemical cycles, but their effect on the soil structure remains largely ignored. Feedbacks of soil physical structure on soil organisms are mainly considered at the microbial level, with a growing interdisciplinary community of soil physicists partnering with soil microbial ecologists. By contrast, effects of soil physical structure as main aspect of soil microhabitats on complex trophic interactions have not yet been addressed as focal research topic in soil sciences. The objectives of this project were to (i) experimentally test how trophic interactions influence soil physical structure and (ii) to set the conceptual basis to unravel feedback effects of soil physical structure on trophic interactions.

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

Цел на проекта

Rationale: Soils are precious for human health and food production but 33 % of the world soils are degraded. Developing ecological engineering strategies to restore them is an urgent need. Soil structure is a key aspect of soil functioning, with soil aggregates being organo-mineral associations, constituting its building bricks. The influence of soil organisms on soil aggregation is commonly acknowledged but supported by little direct mechanistic evidence, which are mainly single group approaches, hence not depicting the role of the complex soil biota.Aim: The aim of this MSC project is to directly link the soil food web properties to the formation of soil aggregates, with subsequent consequences on the restoration of soil functioning. The novelty of this project is that it will provide direct mechanistic evidence of how species interactions – and not only diversity – can influence a key soil process: the formation of aggregates. The resulting knowledge will provide basis for developing soil ecological engineering techniques to restore degraded soil via soil biota manipulation. Methodology: Unravelling such mechanistic understanding will require a multidisciplinary approach merging soil animal ecology and soil physics. The project will be hosted by the University of Göttingen in Germany, providing unique access to soil ecology and physics lab facilities. Two experiments, respectively manipulating targeted trophic interactions (bacteria-amoebe and fungi-collembola) and natural soil food web complexity (tracked by isotope tracing, PLFA, etc.) will be run in microcosms and mesocosms, and resulting changes in soil aggregate properties and soil functioning will be assessed by cutting edge physics techniques, such as neutron radiography and X-rays tomography. A secondment period in the Freie University of Berlin will allow the fellow to reach a functional understanding of the effect of soil biota on aggregation through the measurement of soil organismal traits.

Оригинален текст от CORDIS (на английски).

Участници

GEORG-AUGUST-UNIVERSITAT GOTTINGEN STIFTUNG OFFENTLICHEN RECHTS · GottingenКоординаторГермания