Chapter 54 Notes (Ecosystems)

Chapter 54 Notes (Ecosystems) - Chapter 54 Notes...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 54 Notes (Ecosystems) 1. The Definition of Ecosystem a. Ecosystem = consists of all the organisms living in a community. 2. The energy in ecosystem a. Its dynamics involve two main processes: energy flow and chemical cycling i. Energy flows through ecosystems; Matter cycles in them ii. Matter is cycled through ecosystems; energy is not - the second law of thermodynamics. b. Tropic Relations – 90% of the energies+ biomasses are lost as it goes top. i. Primary producers: Any organisms that photosynthesis. Examples) Autotrophs (Algae, plants), bacteria (cyanobacteria), phytoplankton ii. Primary consumers: Any animals that feed on primary producers (Herbivores) Examples) Cow, grasshoppers, zooplankton iii. Secondary consumers: Any animals that feed on primary consumers (carnivores) Examples) Eagles iv. Tertiary consumers: Any animals that feed on secondary consumers Examples) Snakes, Hawks v. Decomposers: All the living organisms die; those detritus are recycled by them. To recycle nutrients, the minimum an ecosystem must have is producers and decomposers. Examples) Fungi, prokaryotes (bacteria), invertebrates (pill bugs, earthworms…) 3. Gross and Net Primary Production a. Gross Primary Production (GPP) i. Total primary production in an ecosystem ii. The rate at which an ecosystem's producers capture and store a given amount of chemical energy as biomass in a given length of time. iii.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/11/2012 for the course ZOOLOGY 152 taught by Professor Stephengammie during the Fall '11 term at Wisconsin.

Page1 / 4

Chapter 54 Notes (Ecosystems) - Chapter 54 Notes...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online