Biology 102Lecture 29Outline of Last Lecture:I. Clicker QuestionII. FootprintIII. Keystone SpeciesOutline of Current Species:I. Clicker QuestionsII. Ecosystem ServicesIII. Abiotic FactorsClicker QuestionsWhat/who is the producer in hydrothermal vent communities?a. The yeti crabb. Tube wormsc. Bacteriad. The vent gasWhat is the ultimate energy source in hydrothermal vent communities?a. Sunlightb. Hydrogen sulfide c. Hot water spewing from the vent d. BacteriaEcosystem ServicesEcosystem services: sum of benefits mankind receives from ecosystems1. Provisioning- food, water, raw materials, genetic resources, medicines (basically products)2. Regulating- climate control, pest and disease control, water decomposition, purification of water, air3. Supporting- nutrient cycles, crop pollination, seed dispersal4. Cultural- spiritual recreationTube worm – acquires oxygen and sulfide form bacteria--- produce energyAbiotic FactorsBiology 102Abiotic Factors: physical/chemical factors that influence life in the biosphere1. Sunlight- Energy source: photosynthesis captures solar energy- Lack of sunlight is not limiting factor- Nutrient like2. Temperature- Varies around globe metabolism- Organisms adapted to temperature in environmento Mammals and birds3. Water on land - Drying out is a problem4. Nutrients- Photosynthetic organisms depend on nitrogen, phosphorus, and sulfur- Plants from soil- Algae/cyanobacteria5. Other aquatic - (O2) trout - Salinity, current, tide6. Other terrestrial - Wind,
View Full Document
Unlocking...