Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bio 112 > Chapter 52 > Flashcards

Chapter 52 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
0
Q

Population ecology

A

The study of how and why the number of individuals in a population changes over time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Population

A

A group of individuals of the same species that live in the same area at the same time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Immigration

A

Occurs when individuals enter a population by moving from another population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Emigration

A

Occurs when individuals leave a population to join another population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Demography

A

The study of factors that determine the size and structure of populations through time.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Generation

A

The average time between the mothers first offspring and her daughters first offspring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Life table

A

A data set that summarizes the probability that an individual in a certain population will survive and reproduce in any given year over the course of its lifetime

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Logistic population growth

A

The density dependent decrease in growth rate as a population size approaches the carrying capacity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Life history

A

The sequence of events in an individual’s life from birth to reproduction to death, including how individual allocates resources to growth, reproduction, and activities or structures that are related to survival.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Meta population

A

A population made up of many small physically isolated populations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Net reproductive rate

A

The growth rate of a population per generation; equivalent to the average number of female offspring that each female produces over her lifetime.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Population density

A

The number of individuals of a population per-unit area.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Population dynamics

A

Changes in the size and other characteristics of populations through time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Replacement rate

A

The number of offspring each female must produce over her entire life to replace herself and her mate, resulting in zero population growth. The actual number is slightly more than two because some offspring die before reproducing.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Age structure

A

The proportion of individuals in a population that are of each possible age.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Age-specific fecundity

A

The average number of female offspring produced by a female in a certain age class

16
Q

Carrying capacity

A

The maximum population size of a certain species that a given habitat can support.

17
Q

Cohort

A

A group of individuals that are the same age and can be followed through time

18
Q

Density dependent

A

In population ecology, referring to any characteristics that varies depending on population density.

19
Q

Density independent

A

In population ecology, referring to any characteristics that does not vary with population density.

20
Q

Age class

A

All the individuals of a specific age in a population

21
Q

Exponential population growth

A

The accelerated increase in the size of a population that occurs when the growth rate is constant and density independent.

22
Q

Fecundity

A

The average number of female offspring produced by a single female in the course of her life time

23
Q

Finite rate of increase

A

The rate of increase of a population over a given period of time. Calculated as the ending population size divided by the starting population size.

24
Q

Intrinsic rate of increase

A

The rate at which a population will grow under optimal conditions for example when birth rates are as high as possible and death rates are as low as possible.

25
Q

Survivorship curve

A

A graph depicting the percentage of a population that survives to different ages.

26
Q

Fitness trade off

A

An inescapable compromise between two traits that cannot be optimized simultaneously.

27
Q

Zero population growth

A

A state of stable population size due to fertility staying at the replacement rate for at least one generation.

28
Q

Population cycles

A

Where populations rise and fall over a predictable period of time.

29
Q

Survivorship

A

The proportion of offspring produced each year that survive.

30
Q

Age pyramid

A

A Graphical illustration that shows the distribution of various age groups in a population which forms a pyramid as the population grows.

Bio 112 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions