Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
--- relationships ---
Definition: interaction between species whereby one is totally or partially consumed or harmed by the other. |
Predator-prey
|
|
|
***: insect whose larvae live as parasites that eventually kill their host.
|
Parasitoid
|
|
|
Lotka-Volterra
δN / δt = r nN - εPN Population growth curve for *** species 1) What is ε in εPN? 2) What is εPN? |
PREY
1) ε = interaction coefficient for predator efficiency 2) εPN = negative effect of predator abundance on prey abundance |
|
|
Lotka-Volterra
δP / δt = r pP - θPN Population growth curve for *** species 1) What is θ in θPN? |
PREDATOR
1) θ = interaction coefficient for predator efficiency |
|
|
***: combinations of prey and predator population numbers at which neither population is increasing or decreasing
|
Isoclines
|
|
|
Lotka-Volterra
P? N? |
predator pop size
prey pop size |
|
|
*** Stability
Amplitude of oscillations does NOT increase... |
Neutral Stability
|
|
|
Rosenzweig and MacArthur???
|
Modifications to Lotka-Volterra model
|
|
|
*** Stability
*** Predator Amplitude of oscillations DECREASES... |
Neighborhood Stability
Inefficient Predator |
|
|
slope = 0 *** oscillations
negative slope *** oscillations positive slope ***oscillations |
neutral
stable unstable |
|
|
Do predators limit abundance of prey?
|
yes and no
|
|
|
*** Stability
*** Predator Amplitude of oscillations INCREASES... |
Instability
Efficient Predator |
|
|
*** response
–response of average predator to abundance of prey |
Functional
|
|
|
*** response
–response of predator population to a change in prey density |
Numerical
|
|
|
*** Stability
*** Predator Amplitude of oscillations INCREASES then stabilizes... |
Limit Cycle - Instability
Efficient Predator, Prey can hide |
|
|
---*** Repsonse---
Reproduction and Aggregative response |
Numerical Response
|
|
|
---*** Repsonse---
Feeding and Developmental response |
Functional Response
|
|
|
--- Lotka-Volterra predator-prey model ---
Prey isocline on graph is ***. Predator isocline on graph is ***. |
horizontal
lateral |
