1 Species Abundance And Diversity

Question 1

Defined as an assemblage of species living close enough together for potential interaction

Answer 1

Community

Question 2

They differ in species richness, the no. of species they contain, and the relative abundance of different species

Answer 2

Community

Question 3

A unit of nature and the focus of study in ecology

Answer 3

Ecosystem

Question 4

Consist of all the biotic and abiotic factors in an area and their interactions

Answer 4

Ecosystem

Question 5

Ecosystem components

Answer 5

1. Niche
2. Habitats
3. Competitive Exclusion Principle

Question 6

The sum of a species use of the biotic and abiotic resources in its environment

Answer 6

Ecological niche

Question 7

Ecological role in the community — how it fits into an ecosystem

Answer 7

Niche

Question 8

The physical environment to which and organism has become adapted and survives in

Answer 8

Habitat

Question 9

Can occur when species compete for a specific limiting resource

Answer 9

Interspecific competition

Question 10

Strong competition can lead to the local elimination of one of the two competing species

Answer 10

Competitive Exclusion

Question 11

States that two species with similar needs for the same limiting resources cannot coexist in the same place.

Answer 11

Competitive Exclusion Principle

Question 12

is the differentiation of niche that enables two similar species to coexist in the community

Answer 12

Resource Partitioning

Question 13

community attributes:

Answer 13

1. Number of species
2. Relative abundance of species
3. Nature of species interactions (food webs)
4. Physical structure

Question 14

Of a community is the variety of different kinds of organisms that make up the community

Answer 14

Species diversity

Question 15

Species diversity 2 components

Answer 15

1. Species richness
2. Relative abundance

Question 16

The total number of different species in the community.

Answer 16

Species richness

Question 17

Of the different species is the proportion each species represents of the total individual in the community

Answer 17

Relative abundance

Question 18

Is the tendency of a community to reach and maintaining a relatively constant composition of species despite disturbance.

Answer 18

Stability

Question 19

Proposes that communities constantly change following a disturbance

Answer 19

Non Equilibrium Model

Question 20

An event that changes a community by removing organisms or altering resource availability.

Answer 20

Disturbance

Question 21

suggests that moderate levels of disturbance can create conditions that foster greater species diversity than low or high levels of disturbances

Answer 21

Intermediate Disturbance Hypothesis