EVR 1001 Lecture Notes - Lecture 5: Hydrogen Sulfide, Aphotic Zone, Lightning
Document Summary
Roots of trees hold ground together and input carbon, leaves protect soil from rain- cutting them down increases erosion. Flooding is worse in deforested areas, such as haiti. Ecosystem: a location on earth distinguished by its mix of interacting biotic and abiotic components. Photosynthesis: solar e + 6h2o + 6co2 > c6h12o6. Respiration: energy + 6h20 + 6co2 < c6h12o6. Chloroplasts take light, water, and co2 and convert it into glucose and oxygen. 500-700 million years ago: no photosynthetic organisms; low oxygen. All organisms, including producers, carry out respiration; only producers can photosynthesize. Producers > primary consumers > secondary consumers > tertiary consumers > detritivores/decomposers > detritus: energy is often lost, released as heat. Each level in a chain is called a trophic level. Gross primary productivity (gpp): the total amount of solar energy that the producers in an ecosystem capture via photosynthesis over a given time. There is more carbon underground in trees than above ground.
