Ecology- Ch 2/3 Part 2 LO's

Explain how latitudinal variation in temperature drives both major patterns in oceanic

currents.

Explain the importance of vertical circulation in the oceans. Describe the processes that

cause upwelling and the outcome of these processes

Importance of vertical circulation in oceans

• Surface waters

Define the following and explain how they vary in both terrestrial and aquatic

environments:

a) Salinity

b) Acidity

c) Oxygen concentration

Explain how variation in the following can impact the distribution and survival of organisms:

a) Salinity

b) Acidity

c) Oxygen concentration

What is ocean acidification? What is causing it and why is it a concern

List the major abiotic factors that determine the characteristics of freshwater

ecosystems

Describe the river continuum concept. Explain how abiotic conditions change, and how

that affects the major consumer groups present.

Define the major zones of lakes (littoral, limnetic, profundal and benthic), describe their

abiotic conditions and dominant organisms

Describe the major impacts that humans have on freshwater ecosystems

Define the major oceanic zones as defined by depth and light availability (Shallow

ocean, pelagic, benthic and photic

Discuss the general characteristics (light availability, substrate, important organisms) of

the following oceanic zones/ecosystems: Pelagic zone, deep benthic zone, estuaries,

mangroves, rocky intertidal, coral reefs, kelp forests