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Printable Handouts
Navigable Slide Index
- Introduction
- The definition of plant-soil feedback
- Historical perspective
- Plant-soil feedback as a research field
- Net plant-soil feedback effects
- Intra- and interspecific feedback effects
- Mechanisms of plant-soil feedback (1)
- Mechanisms of plant-soil feedback (2)
- Soil biodiversity
- Soil biota and plant-soil feedback
- Soil biota and plant-soil feedback
- Home-field advantage for decomposition
- Consequences for plants and ecosystems
- Plant dominance and rarity
- Coexistence and diversity
- Janzen-Connell hypothesis
- Diversity-productivity relationships
- Temporal dynamics and succession
- Plant invasions and range expansions
- Above-belowground interactions
- Predicting plant-soil feedback effects
- Plant-soil feedback under global change (1)
- Plant-soil feedback under global change (2)
- Current challenges in plant-soil feedback research
- Summary
- Further reading
Topics Covered
- The definition of plant-soil feedback
- Mechanisms of plant-soil feedback
- Soil biodiversity
- Plant abundance and plant diversity
- Diversity-productivity relationships
- Temporal dynamics and succession
- Plant invasion
- Aboveground-belowground interactions
- Plant soil feedback under global change
Talk Citation
Veen, C. (2020, March 29). Plant-soil feedbacks [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved October 8, 2024, from https://doi.org/10.69645/FRIW1769.Export Citation (RIS)
Publication History
Financial Disclosures
- There are no commercial/financial matters to disclose.
Other Talks in the Series: Ecology
Transcript
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0:00
I am Ciska Veen,
a soil ecologist working at
the Netherlands Institute of Ecology, Wageningen, the Netherlands.
Today I will talk about plant-soil feedbacks and their role in
shaping ecological communities and ecosystem processes.
0:15
I start with explaining the definition of plant-soil feedback effects.
Plants are rooted in the soil and biotic and abiotic conditions
in the soil have an important impact on the growth and performance of plants.
At the same time, plants are key factors shaping soil properties and processes.
This creates a feedback loop where plants and soil continuously interact with each other,
referred to in the scientific literature as plant-soil feedback.
Plant-soil feedback is therefore defined as
changes to soil properties that are caused by plants,
which in turn influence the performance of that plant.
Scientists are interested in understanding plant-soil feedback,
because this is a key process,
that explains the composition and functioning of ecological communities and ecosystems.
0:60
The understanding that plant-soil feedbacks can have
a fundamental impact on ecosystems is not new.
This has already been recognized by humans for thousands of years.
Humans have been well aware of the importance of
plant-soil feedback effects for plant growth and
performance since the beginning of agriculture.
Crops affect soil properties in a specific way.
For example, they may deplete certain nutrients and they
often built up specific pathogens around their roots.
These effects of crops and soil properties remain in the soil upon harvest.
If then the same crop is grown again in the next year,
the yields may be lower because of reduced nutrient availability or
because the crop is harmed by specific pathogens that are still present in the soil.
Therefore, already in early civilizations,
such as the Mayans or the Romans,
people have managed plant-soil feedback effects in
their agriculture ecosystems by implementing crop rotation.
This is defined as the practice of growing different crops in succession
on the same land to preserve the productive capacity of that soil.