Plant diversity controls arthropod biomass and temporal stability

Area of Science:

• Ecology
• Ecosystem Science
• Biodiversity Research

Background:

• Understanding species diversity, biomass production, and temporal stability is crucial for conservation, agriculture, and fisheries.
• While plant and consumer relationships are studied, the interplay among plant and consumer diversity, productivity, and stability is less explored.

Purpose of the Study:

• To investigate the interrelationships among plant diversity, biomass production, and temporal stability, and their effects on consumer communities.
• To elucidate the mechanisms driving the links between plant and consumer diversity, productivity, and stability.

Main Methods:

• Utilized a long-term experiment manipulating plant diversity.
• Enumerated arthropod community responses to assess consumer diversity and productivity.
• Employed structural equation models to analyze the complex relationships.

Main Results:

• Found similar strength and direction of interrelationships among diversity, productivity, and temporal stability for both plants and consumers.
• Plant production changes, rather than direct plant diversity effects, primarily mediate the relationship between plant and consumer diversity.
• Extinction or invasion of plant species significantly impacts biomass and energy flux, affecting plant and consumer community dynamics.

Conclusions:

• Plant production is a key driver linking plant diversity to consumer diversity and ecosystem stability.
• Ecosystem stability and biodiversity are sensitive to changes in plant communities, with cascading effects on consumers.
• Findings highlight the importance of plant community structure for maintaining overall ecosystem function and resilience.