title: Introduction to the ecological issues section.
authors.forename: John L
authors.initials: JL
authors.lastname: Innes
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects*; D000818:Animals; D002245:Carbon Dioxide / Q000009:adverse effects; D004463:Ecology; D017753:Ecosystem; D005060:Europe; D009589:Nitrogen Oxides / Q000009:adverse effects; D009656:North America; D010126:Ozone / Q000009:adverse effects; D010316:Particle Size; D013458:Sulfur Dioxide / Q000009:adverse effects
chemical_list: D000393:Air Pollutants; D009589:Nitrogen Oxides; D013458:Sulfur Dioxide; D002245:Carbon Dioxide; D010126:Ozone