Emerging Contaminants in Marine Ecosystems: Ecological Threats and Management Strategies

Abstract

Emerging contaminants in marine ecosystems have become a significant environmental issue globally due to their widespread presence, persistence, and potential ecological and toxicological risks. This research critically synthesizes the current knowledge on the primary categories of emerging contaminants, including micro plastics, pharmaceuticals and personal care products (PPCPs), per- and polyfluoroalkyl substances (PFAS), endocrine-disrupting chemicals, and other industrial pollutants. Toxins are introduced into marine ecosystems by many anthropogenic sources, such as wastewater discharge, agricultural runoff, industrial effluents, and maritime activities. Upon discharge, they exhibit complex environmental behaviours like as long-distance migration, sediment buildup, bioaccumulation, and trophic transfer throughout marine food webs. The reviewed literature indicates that emerging contaminants can inflict significant detrimental effects on marine organisms, including oxidative stress, endocrine disruption, reproductive impairment, developmental toxicity, and behavioral abnormalities. Moreover, concurrent exposure to many pollutants may provide synergistic or additive harmful effects, so amplifying ecological issues beyond those posed by individual contaminants. Notwithstanding the increasing interest in research, substantial deficiencies persist in information pertaining to long-term monitoring, mixture toxicity studies, deep-sea pollution, and standardized analytical methodologies. Moreover, the current remediation techniques and regulatory structures remain insufficient to address the increasing intricacy of marine pollution. The evaluation emphasizes the immediate necessity for cohesive monitoring systems, advanced treatment technologies, and enhanced environmental regulations to mitigate the hazards posed by emerging contaminants. A multidisciplinary approach encompassing environmental research, toxicology, and policy formulation is essential to safeguard marine ecosystem health and ensure long-term sustainability.

Keywords: Emerging contaminants, Marine pollution, Micro plastics, PFAS, Ecological risk assessment, Management Approaches