Title: Unit 15 Quiz
Course: BIS 205 Field Ecology - Copy > Section: BIS 205 Field Ecology - Copy

Q: The reduction in atmospheric ^14C/^12C ratio associated with fossil fuel combustion is known as the
- nitrogen fixation
- Greenhouse effect
- La Niña effect
- El Niño effect
- Suess effect
A: Suess effect

Q: The numbers of species should increase with increasing distance from the mainland.
- True
- False
A: False

Q: Primary production by phytoplankton increases sharply in the Great Salt Lake of Utah during El Niño events because
- water temperatures increase
- decreased salinity permits invasion of predators that control brine shrimp populations.
- decreased salinity allows invasion of more phytoplankton species.
- nutrient concentrations increase as lake volume decreases.
- decreased dissolved oxygen increases the efficiency of photosynthesis.
A: decreased salinity permits invasion of predators that control brine shrimp populations.

Q: The equilibrium model of island biogeography predicts that when equilibrium is reached, an island will be occupied
- by a consistent set of species due to an end in extinctions and immigration
- by a consistent number of species, but extinction and immigration will continue
- only by species that currently inhabit the island
- by a decreasing number of species over time
- by an increasing number of species over time
A: by a consistent number of species, but extinction and immigration will continue

Q: According to the equilibrium model of island biogeography, diversity on islands is a balance between
- speciation and emigration
- immigration and extinction
- speciation and extinction
- immigration and emigration
- speciation and immigration
A: immigration and extinction

Q: Extinction rates are lower on larger islands.
- True
- False
A: True

Q: What are the general patterns of species abundance and richness both globally and in an ecosystem? Identify one example of an exception to this pattern.

Q: The largest greenhouse gas by volume is
- carbon monoxide
- carbon dioxide
- CFCs
- methane
- nitrogen oxides
A: carbon dioxide

Q: The [_____] hypothesis proposes that the tropics are more species rich because they are less homogenous than higher latitudes.
A: environmental heterogeneity

Q: The change is species composition of an island over time due to species extinctions and immigration is known as [_____]
A: species turnover

Q: Measurements of chlorophyll a concentrations in the Earth's oceans using satellite imaging indicates marine phytoplankton biomass is
- evenly distributed throughout the ocean
- highest far away from coastal areas due to pollution
- highest in the warmest waters
- highest in the cool waters where upwelling occurs
- highest in the Mediterranean Sea
A: highest in the cool waters where upwelling occurs

Q: An important network of ecological research focused on large geographic regions in the U.S. is abbreviated
- CFC
- ENSO
- LTER
- NIH
- GIS
A: LTER

Q: Ozone is which layer of the atmosphere helps block incoming ultraviolet radiation?
- troposphere
- stratosphere
- mesosphere
- thermosphere
- ionosphere
A: stratosphere

Q: The search for patterns of plant and animal populations that can be put on a map is
- global ecology
- geographic ecology
- life history ecology
- community ecology
- successional ecology
A: geographic ecology

Q: The network of satellites allowing a handheld receiver to determine latitude, longitude, and altitude is known as
- geographic information systems
- global positioning system
- remote sensing
- geographic ecology
- cartography
A: global positioning system

Q: Of the following figures, which most closely represents the relationship between species richness and area?
A: (a choice with no text)

Q: The "time since perturbation" hypothesis proposes that, compared to the tropics, temperate and polar regions are
- more diverse because humans have not yet had impacted them as severely.
- more diverse because they are disturbed more severely by cooling during glaciations.
- less diverse because they are disturbed more severely by glacial advances and retreats.
- less diverse because they are more heterogeneous in habitat.
- more diverse because they are disturbed less frequently.
A: less diverse because they are disturbed more severely by glacial advances and retreats.