biodiversity-risk
Biodiversity risk refers to the potential threats and vulnerabilities that agricultural and ecological systems face when genetic or species diversity is reduced or lost. In plant science, maintaining biodiversity is critical because a narrow genetic base leaves crops susceptible to diseases, pests, and environmental stressors, while diverse plant communities support ecosystem resilience and long-term food security. Researchers assess biodiversity risk to identify which species or genetic resources are most endangered and prioritize conservation and breeding strategies accordingly.
PubMed · 2026-04-01
A sweeping study of Indian farmland soils found pesticide contamination in nearly every site tested, including organic farms and forests. Toxic chemical mixtures are seeping deeper into the soil than previously measured, posing serious risks to earthworms and broader soil ecosystems.
98.6% of surface soil samples were contaminated with pesticide residues, including sites under organic management and forest reference areas.
Pesticide metabolites (breakdown products) frequently exceeded their parent compound levels, with fipronil, neonicotinoid, atrazine, and DDT metabolites among the most common — suggesting persistent, underestimated risks.
80% of sites showed high theoretical risk to earthworms, with sugarcane and orchard systems being the most hazardous land uses.
