Biology 1B Ecology Lecture 10 Page 1 Assigned readings 8th Edition pp 1159 1165 7th Edition pp 1092 1097 1097 1104 Aquatic Ecosystems Outline of Lecture 10 A Habitats How do lakes and rivers differ B Respiration C Food D Evolutionary relationships E Physical features F Reproductive behavior G Onchocerciasis and biodiversity H Malaria A Habitats Lotic habitats streams and rivers with flowing water oxygen saturation and temperatures similar to air in shallow systems Lentic habitats ponds and lakes with standing water often oxygen poor 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 and seasonal turnover B Respiration permeability of oxygen 324 000 times slower in water than air C Food autochthonous within system allochthonous outside D Evolutionary relationships lakes fill and disappear but streams and rivers persist in geologic time E Physical features interaction of temperature and oxygen concentrations F Reproductive behavior G Onchocerciasis river blindness Professor Resh Spring 2011 Biology 1B Ecology Lecture 10 Page 2 Assigned readings 8th Edition pp 1159 1165 7th Edition pp 1092 1097 1097 1104 Aquatic Ecosystems H Oligotrophic low nutrient levels steep sided and eutrophic high nutrients U shaped eutrophication I Malaria is vectored by Anopheles mosquitos and caused by Plasmodium protozoans Sickle cell anemia and malaria medical anthropology of malaria malaria control Professor Resh Spring 2011 Biology 1B Ecology Lecture 10 Page 3 Assigned readings 8th Edition pp 1159 1165 7th Edition pp 1092 1097 1097 1104 Professor Resh Spring 2010
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