Biology 1B, Ecology Lecture 10, Page 1 Professor Resh • Spring 2007*Assigned readings, 7th Edition pp. 1092-1097, 1097-11046th Edition pp. 1100-1116Aquatic EcosystemsOutline of Lecture 10A. Habitats - How do lakes and riversdiffer?B. RespirationC. FoodD. Evolutionary relationshipsE. Physical featuresF. Reproductive behaviorG. Onchocerciasis and biodiversityH. MalariaA. Habitats• Lotic habitats: streams and rivers,with flowing water, oxygensaturation, and temperatures similarto air (in shallow systems).• Lentic habitats: ponds and lakes,with standing water, often oxygenpoor, and temperatures are stratified.(See Fig. 50.13 on p. 1091 7th Edit.or Fig. 50.8 on p. 1034 6th Edit.about lake stratification andseasonal turnover)B. Respiration (permeability of oxygen324,000 times slower in water than air).C. Food (autocthonous – within system;allochthonous outside).D. Evolutionary relationships: lakes fill anddisappear but streams and rivers persist ingeologic time.E. Physical features: interaction oftemperature and oxygen concentrations.F. Reproductive behaviorG. Onchocerciasis- river blindnessBiology 1B, Ecology Lecture 10, Page 2 Professor Resh • Spring 2007*Assigned readings, 7th Edition pp. 1092-1097, 1097-11046th Edition pp. 1100-1116Aquatic EcosystemsH. Malaria is vectored by Anophelesmosquitos and caused by Plasmodiumprotozoans.• Sickle cell anemia and malaria• medical anthropology of malaria• malaria controlBiology 1B, Ecology Lecture 10, Page 3 Professor Resh • Spring 2007*Assigned readings, 7th Edition pp. 1092-1097, 1097-11046th Edition pp.
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