Definitions

Question 1

Lentic

Lotic

Answer 1

Lentic : Standing water body with no flow - Example a lake or pond
Lotic : Flowing water bodies - Example a river or spring

Question 2

Drainage System Definitions :
Exorheic
Endoheic
Arheic

Answer 2

Exorheic : Drains to the sea
Endoheic : Drains inland
Arheic : No defined drainage system

Question 3

Photic Zone

Answer 3

Area which light can penetratie into the water

Question 4

D.O.C

Answer 4

Dissolved Organic Carbon

Question 5

T.D.S

Answer 5

Total Dissolved Solids

Question 6

T.S.S

Answer 6

Total Suspended Solids

Question 7

Autotroph/Autotrophic

Answer 7

The producers in the system - producing carbon and oxygen

Question 8

Heterotroph/Heterotrophic

Answer 8

The consumers in the system - consume the carbon and oxygen

Question 9

Allochthonous Carbon Source

Answer 9

Carbon sourced from outside the system usually from terrestrial fringing vegetation/riparian zone

Question 10

Autochthonous

Answer 10

Carbon sourced from in the system usually from alage, macrophytes

Question 11

Stratification

Answer 11

When layers form in the water column due to temperature differnces

Question 12

Epilimion

Answer 12

The warmer layer within water column during stratification. This layer is less dense, recieves more light, high oxygen but low nutrients

Question 13

Hypolimnion

Answer 13

The cooler layer within water column during stratification. Denser, low light, low oxygen and high nutrients

Question 14

Amictic Lakes

Answer 14

Lakes that never mix

Question 15

Holomicitc Laked

Answer 15

Will mix once per year

Question 16

Litorial Zone

Answer 16

Near shore zone with full light penetration allowing plants to grow

Question 17

Pelagic Zone

Answer 17

Deep open waters usually in the middle of the system

Question 18

Euphotic Zone

Answer 18

Areas where light reaches and primary production occurs

Question 19

Profundral Zone

Answer 19

Area where light doesn not reach usually the bottom of the system, harsh conditions

Question 20

Lake Nutrient Status :

• Oligotrophic
• Mesotrophic
• Eutrophic

Answer 20

Oligotrophic : Low nutrients limited - high productivity
Mesotrophic : Intermediate nutrients - high productivity
Eutrophic : High nutrients - phytoplankton/algae outbreaks

Question 21

5 Estuarine Organism Types

Answer 21

• Oligohaline : Freshwater species, very intolerant of salt
• True Estuarine : Species with wide tolerances
• Euyrhaline : Species that require 18ppk of salt
• Stenohaline : Species that require 25ppk of salt
• Migrants : Species that have life cycles within estuaries

Question 22

Riparian Zone

Answer 22

The areas between the terrestrial zone and aquatic zone (an ectone)

Question 23

Pulse Disturbance

Answer 23

Short-term, with severe intensity increases. Example - flood

Question 24

Press Disturbance

Answer 24

Long term with constant intensity. Example - urbanization

Question 25

Ramp Disutrbance

Answer 25

Long term events that have an increasing intesnity

Question 26

Point Source Disturbance

Answer 26

Direct, continuous or intermittent

Question 27

Non-Point Source Disturbance

Answer 27

In-direct effects

Question 28

Indicator

Answer 28

A measurable feature in the ecosystem which indicates towards current ecological health

Question 29

Reference Condition

Answer 29

A “pristine site” used to compare against

Question 30

Synthetic Reference Condition

Answer 30

A reference condition that has be synthesised from models, data from other sites, and historical record