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Related Experiment Video

Updated: Sep 12, 2025

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates
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Different Mechanisms Explain Decoupled Co-Occurrence Patterns of Native and Non-Native Macroinvertebrates.

Chengzong Tian1,2, Jorge García-Girón3,4, Zi Xun Kua1,2

  • 1Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.

Global Change Biology
|August 9, 2025
PubMed
Summary

Biological invasions alter ecosystems, impacting native species. This study reveals that biotic interactions, like competition, are crucial drivers of invasion success, alongside environmental factors.

Keywords:
biological invasionbiotic interactioncommunity assemblyco‐occurrence patternsfreshwater ecosystemsjoint species distribution models (jSDMs)non‐native speciestrait‐based model

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Area of Science:

  • Ecology
  • Environmental Science
  • Conservation Biology

Background:

  • Biological invasions are a primary cause of biodiversity loss and ecosystem disruption.
  • Understanding invasion dynamics is critical for effective management and conservation strategies.
  • Biotic interactions, such as competition, play a significant role in species distribution and invasion success.

Purpose of the Study:

  • To investigate the community assembly processes of freshwater macroinvertebrates under biological invasion.
  • To differentiate the roles of environmental filtering and biotic interactions in shaping native and non-native species distributions.
  • To uncover co-occurrence patterns and community organization using a long-term European dataset.

Main Methods:

  • Utilized joint Species Distribution Models (jSDMs) with a comprehensive European dataset.
  • Incorporated functional traits, phylogenetic relationships, and environmental niches.
  • Analyzed residual variance to infer species-to-species interactions, including competition.

Main Results:

  • Environmental covariates had varying effects on native and non-native species, with stronger environmental filtering on native species.
  • Non-native species demonstrated broader environmental niches compared to native species.
  • Biotic filtering, including interspecific competition and invasion meltdown, significantly influenced species distributions beyond abiotic factors.

Conclusions:

  • Biotic interactions are key drivers of biological invasion success, complementing environmental filtering.
  • Non-native species often possess broader niches, facilitating their establishment and spread.
  • A nuanced understanding of both biotic and abiotic factors is essential for predicting invasion risk and managing impacts.