Chapter 30: Ecology and Populations Flashcards

(35 cards)

1
Q

Organisms and ecology studies

A

An individual plant, fungi, animal, protist, or prokaryote. ecology focuses on adaptations to an environment

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

Population and ecology studies

A

group of individuals of the same species occupying a given location at the same time. ecology describes the changes in population over time

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

Community and ecology studies

A

all the populations in a particular locale. ecology study interactions between populations

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

Ecosystem and ecology studies

A

living organisms and their physical environment. presence of suspended particles affecting photosynthesis in algae

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

Biosphere and ecology studies

A

portion of Earth’s surface where living things exist.,. understand how various Geosystems contribute to biodiversity and dynamics of the biosphere

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

Ecology

A

the scientific study of the interaction of organisms with each other and with their physical environment

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

Species

A

group of similarly constructed organisms capable of interbreeding and producing viable offspring, share a gene pool

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

environmental science

A

applies ecological principles to practical human concerns

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

Conservation biology

A

disciple of ecology that studies all aspects of biodiversity, intending to conserve natural resources for future and current generations

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

carrying capacity

A

the number of individuals the environment can sustain for an indefinite time

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

MDC

A

a. lower growth rate
b. lower population numbers
c. higher environmental impact

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

Environmental impact

A

the consumption of resources and production of waste per person

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

LDC

A

a. higher growth rate
b. higher population numbers
c. lower environmental product

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

how to calculate the growth rate

A

number of people born - number of people who die each year

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

Replacement reporduction

A

each couple produces only two children, they are replacing themselves

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

prereporductive

A

before being able to reproduce

16
Q

reproductive

A

at the age of reporduction

17
Q

postreproduction

A

not able to reproduce

18
Q

Resources

A

components of an environment that support organisms. food,water, shelter and space

19
Q

Three spatial patterns

A

clumped, rando,. uniform

20
Q

Range

A

portion of the globe where species are found

21
Q

Population density

A

the number of individuals per unit area (or unit volume) of a patricular habitat

22
Q

survivorship

A

how age at death influences population size

23
Q

Type I surviorship curve

A

survival high until old age

24
Type II surviorpship curve
possibility of death is equal at any age
25
Type III surviorship curve
death is likely amound the younf, with few individuals reaching old age
26
Biotic Potential
the ability to increase population size
27
Biotic potential depends on
a. availability of resources b. numbers of offspring per reporductive event c. chance of survial of offspring to reach reproductive age d. how often reproductive happens e. how old organisms have to be reproduced
28
exonential growth
growth, in which the increase occurs in the same manner as compund interest. j shaped
29
Lag phase
growth is slow because number of individuals in the population is small
30
Exponential growth phase
growth is accelerating
31
Logistic growth
population increase that results in S-shaped curve. Growth is slow at first, steepends and then levels due to enviromental resistance
32
Stable equilibrium phase
little to any growth take place because birth and deaths are about equal
33
Density-independent factos
abiotic factors that cause sudden and catatrpohic reductions in population size
34
Density-independent factors
biotic factor, such as disease, competition, or predation, that affect population size accorfing to the population's density