AP BiologyCommunity Ecology: Chapter 54

Community

All of the living organisms that interact within a particular place

Introduction: Reading of Carson’s Silent Springs & Controversy of DDT video: https://www.youtube.com/watch?v=

kyYpwOTtaLI

Relationships between organisms…define and

give an example of each!Predation

Competition Interspecific Intraspecific

Symbiosis Mutualism +/+ Commensalism +/o Parasitism +/1

Feeding Relationships

Pyramids of production activity (Chapter 55)

Identify an aquatic food web from the list below. Label each trophic level and diagram the flow of energy within the food web. Estuary Open Ocean (marine) Salt Marsh Lake (fresh water)

Follow-up activity: Are certain foods “greener” to eat?

BiomagnificationHow is the bioaccumulation of toxins,

different than the transfer of energy?

Follow-up Activity

Observation of PCB bioaccumulation and its effects on a marine ecosystem.

Biogeochemical Cycles

Bio— Geo—Chemical –-

Cycle

Water—unique…same type of matter just physical changes!

Phosphorous—unique, does not cycle into the atmosphere!

Nitrogen & Carbon—cycling between living things, soil, and atmosphere. Biological processes are essential. Nitrogen Cycle: Role of Microorganisms Carbon Cycle: Link to global warming!

Review: Ecological Succession

Mastering Biology Chapter 54. Primary Succession activity. What are some other examples of

succession??? When did we learn about succession?