Non-trophic interactions strengthen the diversity-functioning relationship in an ecological bioenergetic network...

Area of Science:

• Ecology
• Theoretical Ecology
• Community Ecology

Background:

• Ecological communities feature diverse species and complex interactions.
• The consequences of interaction diversity on community functioning remain poorly understood.
• Global change necessitates understanding drivers of the diversity-functioning relationship.

Purpose of the Study:

• To investigate the role of diverse interaction types and their intensities on species diversity and ecosystem functioning.
• To analyze how interaction diversity influences the relationship between species diversity and community functioning.
• To assess the impact of considering multiple interaction types versus solely feeding interactions.

Main Methods:

• Utilized a multispecies dynamical model.
• Incorporated various interaction types including competition, predator interference, and recruitment facilitation alongside feeding.
• Examined the effects of interaction presence and intensity on community properties.

Main Results:

• Diverse interactions significantly affect species diversity, with effects varying in magnitude and direction based on interaction type and abundance.
• The presence and intensity of diverse interactions consistently steepen the relationship between species diversity and ecosystem functioning.
• Ignoring interaction diversity leads to underestimation of the impact of species loss on functioning.

Conclusions:

• The diversity of ecological interactions plays a critical role in shaping community structure and function.
• Considering a broader range of interactions provides a more accurate understanding of biodiversity-ecosystem functioning links.
• Future research should integrate diverse interaction types to better predict ecosystem responses to global change and species loss.