Yet, comprehensive empirical tests of how sampling

The gap

Evidence profile

Sourced from the stated research gap and limitations section and abstract and discussion of the source papers, classified as general, spanning 4 journals.

Supporting evidence — 4 representative gaps

• Habitat-Dependent Ecological Differentiation of Soil and Water Microbiomes in High-Altitude Alpine Meadow Ecosystems on the Qinghai–Tibetan Plateau (2026) · Microorganisms · doi

  Previous research has largely been confined to soil ecosystems, leaving a gap in understanding the ecological differentiation of soil and water microbiomes. There is a lack of understanding of how environmental heterogeneity influences the ecological assembly processes governing soil and water microbiomes.

  generalstated research gap
  Keywords: previous research has largely been confined soil ecosystems
• Mechanistic Insights into the Role of Endophytic Fungi in Combating Salinity and Insect Stress in Plants (2026) · Journal of Crop Health · doi

  Results obtained under controlled laboratory and greenhouse conditions frequently exhibit limited reproducibility under field environments. Gnotobiotic and sterile experimental systems oversimplify ecological complexity by ignoring interspecies competition and native microbial communities. Environmental heterogeneity, varying climatic factors, soil physicochemical variability, and complex native microbial interactions limit the wider applicability of experimental results.

  generallimitations sectionevidence 5/5
  Keywords: results obtained controlled laboratory greenhouse conditions frequently exhibit
• Opposing effects of aboveground and belowground bacterial diversity on ecosystem multifunctionality under global change (2026) · Proceedings of the Royal Society B Biological Sciences · doi

  climate warming, nitrogen deposition) are known to alter bacterial diversity in soil and the rhizosphere, but their effects on phyllosphere microbes and above–belowground community linkages remain unclear.

  generalabstractevidence 4/5
  Keywords: climate warming nitrogen deposition known alter bacterial diversity soil rhizosphere effects phyllosphere microbes belowground community
• The illusion of diversity: sampling design drives conflicting estimates of soil bacterial richness (2026) · bioRxiv · doi

  Yet, comprehensive empirical tests of how sampling effort, spatial extent, and physical homogenization cumulatively affect soil microbial diversity estimates are lacking.

  generaldiscussionevidence 4/5
  Keywords: comprehensive empirical tests sampling effort spatial extent physical homogenization cumulatively affect soil microbial diversity estimates

Questions about this gap