Barwon Heads Flashcards Preview

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Flashcards in Barwon Heads Deck (23):
1

Habitat

The natural home or environment of an organism

2

Environment

The surroundings or conditions in which an organism operates

3

Microhabitat

A small-scale environment

4

Biotic factor

Any living component that affects the population of another organism or the environment

5

Abiotic factor

Non-living condition that affects the population of another organism or the environment

6

Community

Interacting group of various species in a common location

7

Adaptation

Trait with a functional role in an organism that is maintained and evolved by means of natural selection

8

Physiological adaptation

Internal systematic responses to external stimuli in order to help an organism maintain homeostasis

9

Structural adaptation

Evolution of physical features of an organism

10

Behavioural adaptation

Activities that an organism does to help it survive in its natural habitat, can be learned or instinctive

11

Quadrat

Tool used for sampling purposes that is placed on the ground at random to count the vegetation or organisms within the sample

12

Transect

Path along which one counts and records occurrences of the species of study

13

Tolerance range

The particular environmental conditions in which a particular species can successfully live and reproduce

14

Distribution

Region where an organism is found

15

Abundance

Number of individuals in the area

16

Basic needs that must be met for an organism to survive

Energy source, liquid water, chemical building blocks, stable environment, gas, nutrients, shelter

17

Low tide

Temperatures fluctuate greatly
Radiation is intense
Water loss is great
Availability of food and dissolved oxygen is reduced

18

High tide

Little temperature fluctuation
Few problems with water loss or food availability
Animals and plants are subjected to the force of waves across the whole rock platform
Organisms unable to hold on are dislodged and swept away

19

Low water region to high water region

Increase in stress from temperature
Increase in stress from dehydration
Decreases in stress from wave action

20

Wave action adaptations

Muscular foot

21

Dehydration adaptations

Lowering metabolism, shell stores water

22

Overheating

Protective shell, shell has reflective properties
Move into shaded premises
Huddle to reduce surface area

23

Kite diagrams

Shows the distribution and the abundance of a species along the shore