ISCI 1001 Lecture 16: Nov 3, 2015
12 Nov 2015
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Animals (75. 7%) ~ 1 324 000 sp. (eukaryotes) The o2 in 1 out of every 4 breaths: made by diatoms. Algae -> claim -> reproduce 90% of the atm o2. Maintain ecosystem integrity: high biodiversity -> higher ecosystem stability. Enhance food security: higher disease resistance. Additional economic benefits: thermos aquaticus (archae) Psychology: biophilia unconscious connections of humans to the rest of life, ndd (nature deficit disorder) Hunhammer ecosystem services in urban areas ecological economics (1999) 293-301. By 2030 > 60% of human population will live in cities. 29 largest cities around the baltic area: conclusions about urban ecosystems. City could be considered 1 large ecosystem. Or city could be considered as several individual ecosystems. 7 different urban ecosystems: street trees, lawns/parks, urban forests, cultivated land, wetlands, lakes/sea, streams, ruderal ecosystems. Increases w/ higherleaf area: trees > shrubs > grass. Trees remove 5500 tons of air pollutants annually.
