Ecology: We are all connected and interdependent “Toxic Garbage Island” movie W 4/21 at 5pm in JES A121A

Two ways to think about the world: atoms molecules organelles cells tissues organs systems organisms ecosystem Reductionism holism planet

Food Web (This one is from Antarctica) Fig 54.12

Ecological Interconnections

Fig 55.4 Interconnections

Fig Predator-Prey interactions

Hare populations are limited by predation and food availability.

Carrying Capacity exponential growth stationary phase Fig 53.12

Fig 53.3 Population size includes births, deaths, and migration

Human Population Growth Fig as of 4/15 at pm: 6,815,080,019

What limits Carrying Capacity?… Fig 53.12

Space …Availability of resources.

Availability of resources and removal of waste limits carrying capacity Fig 55.4

Fig Predator-Prey interactions

fewer consumers than producers Fig 55.11

Energy is lost in each consumer

Fig Energy is lost as it is consumed: where does it go?

Fig 55.9 only a small percent of energy from plants enters the food chain

Fig 55.9 only a small percent of energy is stored in organism

Fig Energy is lost in each consumer 1000

Space What resources do organisms need?

Fig Carbon cycle

CO 2 levels in Hawaii and average global temp. Fig 55.21

Fig Nitrogen cycle 80% in air

Nitrogen as part of amino acids NNN

Fig Nitrogen cycle 80% in air

Fig 55.6 Resources are not evenly distributed

Fig Ecosystems on Earth: resources are not evenly distributed

Ecology: We are all connected and interdependent “Toxic Garbage Island” movie W 4/21 at 5pm in JES A121A Exam averages: #1 = 78.7 #2 = 73.5 #3 = 67.4