Complex sentence: Van Straalen (2003) in particular, argued that the field had diversified to become "Stress Ecology" and that, as anthropogenic toxicants interact with myriad other stressors synergistically, exclusive study of their effects in an ecological context was nonsensical.
Split into simpler sentences: Van Straalen (2003) in particular, advocated its replacement with "Stress Ecology". His justification was that anthropogenic toxicants interact with myriad other stressors synergistically and, therefore, exclusive study of their effects in an ecological context was nonsensical.