Chapter 8 Properties of Populations Flashcards Preview

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Flashcards in Chapter 8 Properties of Populations Deck (24)
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1
Q

Population

A

a group of individuals of the same species living in a given area at a given time

2
Q

Unitary organisms

A

Form, development, growth, and longevity are predictable and determinate from conception on. The zygote, formed through sexual reproduction, grows into a genetically unique organism (like a bear or a human)

3
Q

Modular Organisms

A
  • The zygote (the genetic individual) develops into a unit of construction, a module, which then produces further, similar modules. (PLANT WITH MODULLES THAT CREATE MODULES THAT CREATE MODUES)
4
Q

Genet

A

individual plants produced by sexual reproduction

5
Q

Ramet

A

asexually produced individuals derived from the genetic parent

6
Q

Clone

A

group of ramets from the same genet make up a clone

7
Q

Population distribution

A

area in which the population occurs

8
Q

Ubiquitous

A

– a species with an extensive geographic range, found in Many locations

9
Q

Endemic

A

– species restricted in distribution to a particular location, limited geographic distribution

10
Q

Metapopulation

A

– separated populations of a species interconnected by movement of individuals among habitat patches

11
Q

Abundance

A

– total number of individuals in the population

12
Q

Crude population density

A

number of individuals per unit area

13
Q

Ecology population density

A

density measured in terms of area available as habitat… example: bird density per acre of land is crude; bird density per acre of possible forest habitat is ecological density

14
Q

Dispersion

A

– spatial distribution of individuals within a population

15
Q

Dispersal

A

leaving an area of birth or activity for another area

16
Q

Purpose of producing ramets?

A

To extent life of plant! So when older modules die, others live and new ones appear!

17
Q

Geographic range

A

when the defined area encompasses all the individuals of a species

18
Q

Distribution vs abundance

A

distribution- spatial extent of population

abundance- total number of individuals within the area

19
Q

2 Factors of Abundance

A
  1. Population Density- number of individuals per area… using crude or ecological
  2. Population distribution (AREA OF POP)
20
Q

Why is crude density not always accurate?

A

Because not equally numerous individuals across the geographic range. Ecological allows us to focus on habitats

21
Q

Random vs Uniform vs Clumped spatial distributions

A

random is random
uniform is territorial and even
clumped is like herds of fish or schools of buffalo

22
Q

Plants that reproduce asexually form what kind of spatial distribution?

A

clumped as they form from the parent plant

23
Q

3 age classes that are common

A

prereproductive
reproductive
post reproductive

24
Q

dendrochronology

A

counting rings of trees to age trees