Biology 1B, Ecology Lecture 10, Page 1 Professor Resh • Spring 2011*Assigned readings, 8th Edition pp. 1159-11657th Edition pp. 1092-1097, 1097-1104Aquatic 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. 52.17 on p. 1161 8th Edit.or Fig. 50.13 on p. 1091 7th Edit.about lake stratification andseasonal turnover)B. Respiration (permeability of oxygen324,000 times slower in water than air).C. Food (autochthonous – 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 2011*Assigned readings, 8th Edition pp. 1159-11657th Edition pp. 1092-1097, 1097-1104Aquatic EcosystemsH. Oligotrophic (low nutrient levels, steepsided) and eutrophic (high nutrients,U-shaped); eutrophicationI. 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 2010*Assigned readings, 8th Edition pp. 1159-11657th Edition pp. 1092-1097,
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