Species Diversity
The variety of species within a given area.
What is Species Diversity?
This distribution pattern is the most common in nature, where organisms are clustered together, often due to uneven resource availability.
What is clumped distribution?
an ecological interaction where one organism (the predator) hunts, kills, and eats the other organism (the prey).
What is predator-prey relationships?
Which of the following is the most common population distribution pattern?
a. Uniform
b. Random
c. Clumped
d. Linear
Clumped
This term refers to the total number of different species present in a given area.
What is Species Richness?
In this rare distribution pattern, the position of each individual organism is independent of the positions of the others.
What is random distribution?
Structural adaptations, Armor and shells, Spines and thorns, Speed and agility, and Camouflage are all what types of defense mechanisms
Physical
True or False: Exponential growth is where the population increases rapidly, making a J-shaped curve.
True
When there is low species evenness, there are species who are ____________.
dominating the ecosystem
This term refers to the maximum population size that an environment can sustain indefinitely without degradation.
What is carrying capacity?
the ability of a population to maintain its size and distribution over time despite changes.
What is population stability?
Predators impact the behavior and abundance of their prey, which affects the primary producers. This is called what?
Top-down control
We are comparing two ecosystems. Ecosystem 1 has 5 different species of trees and Ecosystem 2 has 7 different species of trees. (1) has a species that is significantly more present than the others, making up 80% of the tree population. (2) has about the same proportions of each species throughout the ecosystem. Which has higher RICHNESS and which has higher EVENNESS?
Richness - 2
Evenness - 2
This refers to the sequence of reproductive events within a population.
What is generation number?
Group living is an example of what type of defense mechanism?
Behavioral
The predator-prey model suggests that as the prey population grows, what is expected to happen to the predator population?
The predator population will increase
Lower species diversity
Given data:
Initial population = 100 deer
Carrying capacity = 500 deer
growth rate = 0.2 per year
Calculate the population size in the next generation using the logistic growth model.
16 deer
Plants can release ________________ to warn off herbivores
Chemicals
A change in one population, often a predator, that affects populations at other trophic levels in an ecosystem is called what?
Trophic cascade