Notes Feb 11th

Notes Feb 11th - produced as a result of energy consumption...

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Bio notes Physiological Factors Many non social species show a reduced birth rate in crowded populations Stress of competition and fighting and reduced food results in increased adrenal secretions which in turn affects estrus and birth Density Dependent Factors Emigration As populations increase, some animals leave the population to set up breeding somewhere else Colonies of ants, termites and bees Dispersal of many animals Arctic Lemmings Major Population Death Events 1300’s Bubonic Plague 2 million deaths World War I 100,000 deaths (53,000 from flu) Civil War more died from measles that gunshot wounds Recent Killer Malaria and AIDS Demography Measure of population structure and changes Cohort- A sample of a population age class. Generally 1,000 people Human Demography Increased Birth Rate Decreased Death Rate Decrease in infant Mortality Increased Fertility Age Structure
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Ecological (Carbon) Footprint- how much biological capacity is needed to absorb and process the CO2
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Unformatted text preview: produced as a result of energy consumption. Fossil fuels and industry and technology. This is generally talking about the photosynthetic ability of plants. Average for each person currently on a global scale 5.4 acres (exceeds global biocapacity by 20%) For citizens of the United States our football is 24 acres Reasons for increase of CO2 Burning of fossil fuels Biological respiration Loss of rainforests Pollution of ocean Release of CO2 from rock and sediments Acid Rain SO2= Sulfur Dioxide NO2= Nitric Acid H2S= Hydrogen Sulfide H2SO4=Sulfuric Acid H2NO3= Nitric Acid H2CO3= carbonic acid Sources Burning fossil fuels- coal oil gas Industry Results Dissolve Carbonates, Marble limestone cement Corrodes metals Lowers PH of water reservoirs...
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This note was uploaded on 08/15/2011 for the course BIO 1005 taught by Professor Limcomb during the Spring '08 term at Virginia Tech.

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Notes Feb 11th - produced as a result of energy consumption...

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