{
  "id": 10435939,
  "title": "Belowground functional traits predict population temporal stability in grasslands",
  "url": "https://urgent.news/2026/09/28/belowground-functional-traits-predict-population-temporal-stability",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-28T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.25.754125v1?rss=1"
  },
  "original_language": "en",
  "account": "The stability of plant populations is crucial for species coexistence and ecosystem functioning. Traditionally, aboveground traits have been considered as key determinants. However, the role of belowground functional traits in long-term population stability remains underexplored, though roots play a significant role in water and nutrient acquisition. Researchers analyzed 17 years of vegetation monitoring data from 150 temperate grassland plots across three regions in Germany, coupled with root functional trait data for 72 common grassland species. They computed temporal stability using the coefficient of variation, where lower values indicate higher stability. The study aimed to determine whether root traits predict stability and which belowground dimensions, related to resource acquisition, conservation, or soil exploration, dominate in this relationship. The researchers found that root traits were more consistent predictors of temporal stability than aboveground traits like specific leaf area and leaf dry matter content. They identified that higher average root diameter, root hair incidence, specific root length, and root tissue density were generally associated with higher temporal stability. However, the strength of these relationships varied among regions. Moreover, land use intensity modifications these relationships, with the strongest shifts occurring along the mowing gradient. Increasing mowing strengthened the associations of higher root hair incidence and root tissue density with temporal stability, while the associations of root diameter and root nitrogen content shifted towards lower stability. This study highlights the importance of belowground functional traits as an essential component of trait-based temporal stability research, and provides valuable insights into functional strategies underlying population stability in managed semi-natural grasslands.",
  "summary": "Temporal stability of plant populations is a key determinant of species coexistence and ecosystem functioning, yet its trait-based explanation has remained largely aboveground. Whether root functional traits contribute to long-term population stability remains poorly understood, despite roots mediating water and nutrient acquisition. We combined 17 years of vegetation monitoring from 150…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}