EEB 2244 Final questions with verified answers
A.G. Tansley (1930s) Ans✓✓✓ - Ecological systems
- ecosystem
Alfred Lotka (1920s) Ans✓✓✓ - The thermodynamic perspective
- energy transforming systems
Assuming ecological efficiencies for herbivores = 20% and for carnivores
= 5%. A population of purely herbivorous humans would be greater
than a population of purely carnivorous people by what factor?
A) 4 times greater
B) 5 times greater
C) 20 times greater
D) The same
E) Actually, lower Ans✓✓✓ C
Biodiversity Hotspots Ans✓✓✓ - A biodiversity hotspot is a
biogeographic region that is both a significant reservoir of biodiversity
and is threatened with destruction
Charles Elton (1920s) Ans✓✓✓ - A system of feeding relationships
- food web
,Climax Community Ans✓✓✓ - The final, "equilibrium" sere
- in most communities, because of periodic disturbances and recovery,
the climax is a fleeting (transient) sere in the overall dynamics
Community Succession Ans✓✓✓ The change that occurs in the
structure and composition of the community following a disturbance,
which may lead back to pre-disturbance conditions
Complementarity Hypothesis Ans✓✓✓ - As species richness increases,
there will be a linear increase in function
- each species added has an equal effect
Denitrification Ans✓✓✓ - A process by which microorganisms break
down nitrogen-containing organic matter
- the main pathway of losing biological N
Determinants of Species Membership Ans✓✓✓ 1) Regional Species
Pool
2) Dispersal/Immigration
- Can individuals make it to the location?
- Limited by seed dispersal, species mobility, and geographic
barriers/connectivity of habitat
3) Abiotic Environment
- Temp, rainfall, elevation, soil type
, 4) Species Interactions
Diatoms Ans✓✓✓ - Marine diatoms evolved about 100 million years
ago. Today they generate most of the organic matter that serves as
food for life in the sea
Disturbances Ans✓✓✓ Events that remove organisms from a
community (via mortality) and open up space for new individuals
Diversity Stability Theroy Ans✓✓✓ - Species richness is positively
relate to community stability
- the tendency of a community to remain the same in structure and
function, even after disturbance
Driver and Passenger Hypothesis Ans✓✓✓ - Strength of ecological
function varies greatly. "Driver" species have a large effect; "passenger"
species have a minimal effect
- Addition of driver and passenger species will have unequal effects on
community function
Driver and Passenger Hypothesis with Overlap Ans✓✓✓ - It assumes
there could be overlap between driver and passenger functions
A.G. Tansley (1930s) Ans✓✓✓ - Ecological systems
- ecosystem
Alfred Lotka (1920s) Ans✓✓✓ - The thermodynamic perspective
- energy transforming systems
Assuming ecological efficiencies for herbivores = 20% and for carnivores
= 5%. A population of purely herbivorous humans would be greater
than a population of purely carnivorous people by what factor?
A) 4 times greater
B) 5 times greater
C) 20 times greater
D) The same
E) Actually, lower Ans✓✓✓ C
Biodiversity Hotspots Ans✓✓✓ - A biodiversity hotspot is a
biogeographic region that is both a significant reservoir of biodiversity
and is threatened with destruction
Charles Elton (1920s) Ans✓✓✓ - A system of feeding relationships
- food web
,Climax Community Ans✓✓✓ - The final, "equilibrium" sere
- in most communities, because of periodic disturbances and recovery,
the climax is a fleeting (transient) sere in the overall dynamics
Community Succession Ans✓✓✓ The change that occurs in the
structure and composition of the community following a disturbance,
which may lead back to pre-disturbance conditions
Complementarity Hypothesis Ans✓✓✓ - As species richness increases,
there will be a linear increase in function
- each species added has an equal effect
Denitrification Ans✓✓✓ - A process by which microorganisms break
down nitrogen-containing organic matter
- the main pathway of losing biological N
Determinants of Species Membership Ans✓✓✓ 1) Regional Species
Pool
2) Dispersal/Immigration
- Can individuals make it to the location?
- Limited by seed dispersal, species mobility, and geographic
barriers/connectivity of habitat
3) Abiotic Environment
- Temp, rainfall, elevation, soil type
, 4) Species Interactions
Diatoms Ans✓✓✓ - Marine diatoms evolved about 100 million years
ago. Today they generate most of the organic matter that serves as
food for life in the sea
Disturbances Ans✓✓✓ Events that remove organisms from a
community (via mortality) and open up space for new individuals
Diversity Stability Theroy Ans✓✓✓ - Species richness is positively
relate to community stability
- the tendency of a community to remain the same in structure and
function, even after disturbance
Driver and Passenger Hypothesis Ans✓✓✓ - Strength of ecological
function varies greatly. "Driver" species have a large effect; "passenger"
species have a minimal effect
- Addition of driver and passenger species will have unequal effects on
community function
Driver and Passenger Hypothesis with Overlap Ans✓✓✓ - It assumes
there could be overlap between driver and passenger functions
