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Envs > Final Exam Deck > Flashcards

Final Exam Deck Flashcards

1
Q

Define biome

A

Geographically extensive ecosystem. Occurring wherever environmental conditions allow for its development

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2
Q

Ecozone

A

Large landscape/seascape that support distinct groupings of naturally occurring species and their ecological communities

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3
Q

What’s the diff between ecozone and biome

A

Ecozone is strongly influenced by the specific biodiversity it supports

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4
Q

What defines a terrestrial biome

A

Primarily influenced by temperature and precipitation. Plant+vegetation

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5
Q

What defines a fresh water biome

A

Nutrient availability, water depth + transparency

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6
Q

What defines a marine biome

A

Nutrients+ physical oceanography

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7
Q

Lentic

A

Lakes and ponds

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8
Q

Lotic

A

Rivers + streams

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9
Q

Lake thermal stratification zones in order

A

Metalimnion
Epilimnion
Hypolymnion

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10
Q

What are the categories of human dominated ecosystems

A

Aggroecosystem
Rural techno ecosystem
Urban industrial techno

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11
Q

What are the natural and anthropogenic sources of air pollution

A

Natural: fires, volcanoes, sea spray, bacteria, dust
Anthropogenic: coal, burning, cars

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12
Q

7 Pollutants deemed by climate change Canada

A

Sulfur oxides
Nitrogen oxides
Ammonia
Carbon monoxide
VOC
particulate matter
Tropospheric ozone GL

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13
Q

Primary pollutant means

A

Cause damage in the form which they’re emitted

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14
Q

Secondary pollutant means

A

Not emitted but formed in the atmosphere by photochemical rxns

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15
Q

What are the 2 conflicting roles of env scientist

A

Good advocate vs good scientist

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16
Q

Ecosystem approach

A

Not a random grouping of populations. It treats them interdependentally

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17
Q

Env constraints we’ve overcome

A

Control of fire
Improvement of tools
Domestication of crops

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18
Q

Arithmetic

A

Constant amount/time. Diagonal line

19
Q

Exponential

A

Constant increase. J curve

20
Q

Malthusian growth

A

Population boom then crash

21
Q

Natality

A

Production of new individuals

22
Q

Fecundity

A

Ability to have children

23
Q

Fertility

A

offspring produced

24
Q

Mortality

A

Death rate

25
Q

Survivorship

A

% of cohort that survive to a certain age

26
Q

NOAEL

A

No observed adverse effect level

27
Q

Chronic toxicity

A

Long term. Not much info regarding

28
Q

Acute

A

Short term. More info

29
Q

Key factors in toxicity according to Canada

A

P,B. iT
Persistance, bioaccumulation, inherent toxicity

30
Q

Bioaccumulation

A

Toxicants build up in animal tissue

31
Q

Bio magnification

A

Toxicants concentrate in top predators (food web)

32
Q

What is the gh gas effect

A

Keeps earth warmer than it would be otherwise. Like a thermal blanket that warms the earth caused by gases in the atmosphere

33
Q

What characteristics of a molecule determine its ability to absorb radiation

A

When the frequency of stretching/bending matches the frequency of radiation

34
Q

Most prominent GHGs

A

H20 CO2 methane

35
Q

Why is there a seasonal cycle with CO2 in the atmosphere

A

High rates of uptake of vegetation in the northern hemisphere

36
Q

What is radiative forcing

A

The amount of change in radiation energy balance that a given factor causes
Posi=warm
Negi=cold

37
Q

Proxy indicator

A

Indirect evidence; substitue for direct measurement

38
Q

Point source

A

Discharge pollution from factories/power plants

39
Q

Non point source

A

Having no specific location of discharge

40
Q

Trophic status of a lake

A

Productivity of a lake

41
Q

Pollution problems from sewage released

A

Oxygen depression, eutrophication, diverse toxins

42
Q

Clarification of Lake Erie

A

Towns treat sewage. Loss of phytoplankton from zebra mussles

43
Q

Hydroelectric reservoirs damage

A

Loss of wildlife
Habitat destruction
Methane
Damage to wetlands

44
Q

Sewage treatment

A

Physical separating
Biological degradation
Removal of nutrients

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