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Flashcards in FINAL Deck (52)
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1

Ecology

the study of the "house"

2

Species

a group of actually or potentially interbreeding natural populations which are reproductively isolated

3

Biological Species Concept

members of the same species should have the opportunity to reproduce together

4

Isolating Properties of species (4)

pheromones
geography
habitats
behavior

5

Population

organisms of the same species occupying a particular place at a particular time

6

Community

all individuals of all species in a given area

7

Ecosystem

the community and its non-living components/surroundings

8

Biotic

living
-in a continuous cycle with its opposite

9

Abiotic

nonliving (atmosphere/water)
-in a continuous cycle with its opposite

10

population growth equation

N=rX+I-E-D

11

N=

final number

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r=

reproductive potential
-how quickly a species reproduces
-give the species everything it needs to grow

13

X=

initial number

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I=

immigration

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E=

emmigration

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D=

mortality factor
-keeps r from going over K

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K=

carrying capacity
-number of individuals in a population that can be sustained indefinitely

18

Limiting Factors of K

1. Density dependent
2. Density independent
3. Predation

19

Density Dependent Limiting Factors Examples

food, shelter, disease, and war

20

Density independent Limiting Factors Examples

temperatures, earthquakes, and natural disasters

21

Predation Limiting Factor

killing off a species predator to increase population of said species

22

Survivorship Curve

measures what potential survivorship a person has at a certain point in the r life

23

Reproductive Strategies

This can be either Opportunistic or Equilibrium; when a population chooses whether or not they will put their energy into mass production or not

24

Opportunistic Strategy

Rats/Weeds (r)
-many small young
-rapid maturation
-little paternal care
-reproduce only once
-small body sizes
-poor adult survival

25

Equlibrium

Elephants/people (K)
-few large young
-large body size
-good adult survival
-reproduce many times
-intense paternal care
-slow maturation

26

Symbiosis

Interaction where 2 organisms are living together in some way
-mutalism
-Commensalism

27

Mutualism

relationship that is beneficial to both parties

28

Commensalism

relationship where one benefits and the other is uneffected

29

Competition

Interaction with two species with very similar requirements

30

Fundamental Niche

everything that is needed by a certain creature