ES101 Lecture Notes - Lecture 2: Eutrophication, Greenhouse Gas
Week 4 Lecture 1: Finish energy; ecosystems, cycling
*midterm note → chapter 4, section 4.6 (soils) will not be tested on midterm
***will be some kind of turbine question on the midterm***
- Ecology: Natural systems from level of organism up to level of earth as complete
biosphere
- Environmental Studies: Interested in natural and human systems and their interactions
- Ecological Systems: Organisms are connected via photosynthesis and sun
Tolerance to Environmental Conditions
- Species typically have a range of environmental conditions they can tolerate
- Changes in ecosystems can affect species health depending on the tolerance range
Human-Environment Systems
- Humans are increasingly the most significant drivers of ecosystem change (used to be
natural phenomena such as ice ages)
Net Primary Productivity
- Primary production is the amount of chemical energy that plants create in a given length
of time through photosynthesis
- The plant will use some of this energy to fuel its own growth and metabolism; what
remains is known as net primary productivity (NPP)
- Some ecosystems have higher NPP than others (higher NPP = greener spaces like the
rainforest)
Cycles
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Week 4 lecture 1: finish energy; ecosystems, cycling. *midterm note chapter 4, section 4. 6 (soils) will not be tested on midterm. ***will be some kind of turbine question on the midterm*** Ecology: natural systems from level of organism up to level of earth as complete biosphere. Environmental studies: interested in natural and human systems and their interactions. Ecological systems: organisms are connected via photosynthesis and sun. Species typically have a range of environmental conditions they can tolerate. Changes in ecosystems can affect species health depending on the tolerance range. Humans are increasingly the most significant drivers of ecosystem change (used to be natural phenomena such as ice ages) Primary production is the amount of chemical energy that plants create in a given length of time through photosynthesis. The plant will use some of this energy to fuel its own growth and metabolism; what remains is known as net primary productivity (npp)
