This is a field-oriented course that examines physical, chemical and biological variables in estuarine and coastal marine ecosystems, and how they affect the distribution and ecology of aquatic and intertidal organisms. Methods of measuring physical, chemical and biological parameters will be discussed and demonstrated. Laboratory will include a student-designed research project on some aspect of estuarine or marine ecology. Lecture and laboratory. This course is approved as an elective in the Marine Science Curriculum. Prerequisite: BIOL 271, BIOL 271L.