ENSC 201 Lecture Notes - Lecture 15: Polycyclic Aromatic Hydrocarbon, Littoral Zone, Pacific Herring
17 Aug 2016
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Document Summary
Hazard: physical, chemical, biological characteristics of the spilled oil. Exposure: distribution, concentration and accumulation by biota. Receptor: nature, abundance, distribution of exposed species. Environment: nature and extent of exposure, species exposed, natural stressors that will interact with toxicity and ecological impacts will be site specific. Floating oil (physical fouling of feathers, fur, etc. ingestion of toxic chemicals during grooming: species that live on the waters surface. Aquatic birds and mammals, turtles: shoreline species. Littoral zone invertebrates and fish species, nesting birds, turtle eggs. Aquatic vegetation (i. e mangroves, eel grass, etc. ) Oil entrained in water (dispersed oil, released of toxic chemicals into the water: pelagic species. Oil stranded in sediments (release of toxic chemicals: benthic species. Embryos of fish that spawn on solid substrates. Hazard: oil as a mixture the whole is greater than the sum of its parts. Oil will strand and coat any surface it touches.
