Study examines how plants and ants build communities in wood-pasture ecosystems

Greg Howard
3rd October, 2025

Study examines how plants and ants build communities in wood-pasture ecosystems

The forest habitat within a wood-pasture from the study, located in the Carpathian Basin, Central Europe.

Image adapted from: Lőrincz et al. / CC BY (Source)

Key Findings

  • This study, conducted in Central European wood-pastures, found distinct plant and ant communities in different habitats like grasslands and forests
  • Plant communities were primarily shaped by local environmental conditions such as soil type and sunlight, a process called environmental filtering
  • Ant communities, however, were more strongly linked to vegetation characteristics and habitat structure, suggesting competition within the vegetation is a key driver of their diversity
Understanding how diverse ecosystems function is a central challenge in ecology. Complex landscapes – areas with a mix of different habitats close together – are particularly important, but also difficult to study. It’s often unclear what factors most strongly determine which species live where and how this impacts overall biodiversity. Researchers at the University of Szeged[1] investigated this problem by studying wood-pastures in Central Europe, focusing on plants and ants as representatives of different feeding levels (trophic levels) within the ecosystem. The study examined three wood-pastures, dividing each into four habitat types: grasslands, areas with individual trees, forest edges, and forests, resulting in a total of 48 sites. The team then analyzed the plant and ant communities present in each habitat. They found clear differences in the types of plants and ants found in each habitat. However, the reasons why these differences existed varied between the two groups. For plants, differences in environmental conditions – factors like soil type and sunlight exposure – were the primary driver of which species were present. This suggests a process called environmental filtering[2], where the environment essentially selects which plants can thrive in a given location. This is consistent with earlier research showing that environmental factors can strongly shape community composition. Ants, however, showed a different pattern. Their diversity and characteristics were much more closely linked to the vegetation present and the structure of the habitat. While local microclimate did have some influence, it was primarily acting through its effect on the vegetation. This suggests that competition between ant species, influenced by the available resources and nesting sites within the vegetation, was the more important factor determining ant communities. This finding builds on previous work highlighting the indirect effects of fire on ant communities via vegetation structure[3]. In that study, long-term fire experiments showed that fire itself had limited impact on ant diversity, but changes in woody cover – the amount of trees and shrubs – were a strong predictor of ant species’ presence and abundance. The current study expands on this by showing that vegetation structure, more broadly, is a key driver of ant communities, even in the absence of fire as a disturbance. The researchers used statistical techniques called RLQ analysis and fourth-corner analysis to determine the relative importance of environmental factors and vegetation characteristics. Path analysis was then used to understand the indirect relationships between microclimate, vegetation, and ant communities. These methods allowed them to disentangle the complex interactions shaping the observed patterns. Importantly, the study found that the peaks in plant and ant diversity did not coincide. This means that maximizing biodiversity requires considering the needs of different organisms – and the factors influencing them – rather than focusing on protecting individual habitat types in isolation. The University of Szeged team’s findings emphasize the importance of a holistic approach to conservation, recognizing that complex landscapes are shaped by different mechanisms acting on different trophic levels.

AgricultureEcologyPlant Science

References

Main Study

1) Contrasting trait-based assembly mechanisms on different trophic levels: ants and plants on wood-pastures

Published 30th September, 2025

https://doi.org/10.1007/s00442-025-05802-4

Related Studies

2) Should Environmental Filtering be Abandoned?

https://doi.org/10.1016/j.tree.2017.03.004

3) Fire influences ant diversity by modifying vegetation structure in an Australian tropical savanna.

https://doi.org/10.1002/ecy.4143


Related Articles

An unhandled error has occurred. Reload 🗙