aboveground-belowground-linkage
Aboveground-belowground linkage refers to the dynamic interactions between plant shoots, leaves, and flowers above the soil surface and roots, root-associated microbes, and soil fauna below it. These connections matter because processes like herbivory, pollination, or leaf chemistry can influence root growth and soil microbial communities, while root exudates and belowground symbioses can shape plant defense, nutrient uptake, and shoot development in turn. Understanding this linkage helps researchers explain plant resilience, growth strategies, and ecosystem-level nutrient cycling as integrated whole-plant responses rather than isolated aboveground or belowground events.
open_in_new WikipediaPubMed · 2026-07-03
Researchers studying a mountain forest in China found that the type of fungal partnership trees form underground shapes soil bacteria and fungi in opposite ways: trees with AM fungi (which share nutrients broadly) boosted bacterial network complexity and made bacterial communities more deterministic, while fungi in the soil responded most strongly to how densely AM trees were packed nearby.
AM-dominated plots had higher soil nutrient availability and lower elevation; ECM-dominated plots occupied nutrient-poor soils at higher elevation across the 25-hectare study area.
Soil pH was the primary driver of bacterial community turnover (beta-diversity), and AM tree dominance significantly increased microbial network complexity.
AM tree density was the strongest single predictor of fungal community composition, outweighing mycorrhizal tree abundance or diversity as predictors.