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Enviro Studies > Unit 3 Biodiversity Management > Flashcards

Unit 3 Biodiversity Management Flashcards

1
Q

What is biodiversity?

A

Variety of life in all forms

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2
Q

What is four front is biodiversity defined on?

A
  • landscapes
  • ecosystems/habitats
  • species and their 3 components (evenness, richness, and dominance)
  • gene pool
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3
Q

What is biodiversity linked too?

A

Goods and services we need to fulfill our requirements

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4
Q

What is wildlife important?

A
  1. Economic value
  2. Ecological life support
  3. Cultural value
  4. Recreational value
  5. Scientific value
    (6. Negative value)
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5
Q

What is a keystone species?

A

A species that hold the ecosystem together, and if they are removed from the ecosystem the ecosystem falls apart

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6
Q

What is a trophic cascade?

A

When a top predator is removed and the ecosystem collapses from the top down

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7
Q

What is population growth rate?

A

Percentage increase in population over a period of time

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8
Q

What is doubling time?

A

The time it takes for a population to double of the growth rate states the same

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9
Q

What is exponential growth?

A

Increase by a fixed percentage over time

"J" shaped graph
                  |
                  |
                 /
                /
\_\_\_\_\_\_\_\_\_/   Like that but more curvy
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10
Q

What is logistic growth?

A

When a population is levelled out by the carrying capacity of an ecosystem
_______carrying capacity of
/ This ecosystem for
/ This organism
/
_________/

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11
Q

What is an invasive species?

A

Not local, brought in - take resources from local species.

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12
Q

Why are AIS important?

A
  • ecological changes
  • economic losses
  • Heath concerns
  • recreational losses
  • not difficult to transport
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13
Q

What is the anthropocene era?

A

Humans are responsible for the 6th mass extinction

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14
Q

What are some major threats of biodiversity?

A
  • hunting, poaching, fishing
  • pollution
  • loss of habitat
  • climate change
  • invasive species
  • human populations/overconsumption
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15
Q

Why are some species more vulnerable than others?

A
  • long lived and delayed maturity
  • limited habitat availability
  • low reproductive rate
  • breed in colonies ( high density population)
  • specific requirements at life stages
  • niche specialization (pandas bamboo)
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16
Q

What is a species of special concern?

A

A species particularly sensitive to human activities.

17
Q

What is a threatened species?

A

It is a species likely to become endangered if hunting factors are not reserved.

18
Q

What is a species that is extirpated?

A

It means the species no longer exists a in the wild.

19
Q

What is a species that is extinct?

A

No longer exists.

20
Q

What is a Canadian national park?

A

It is a country wide system of representative natural areas of Canadian significance.
They are protected but open to the public, for sustainable development.

21
Q

What is ecological integrity?

A

Keeping ecosystems healthy and whole.

22
Q

What is special about riding mountain nation park?

A
  • it is a biosphere reserve

- contains 3 ecozones

23
Q

How do we solve the problem of fragmented ecozones?

A

Establish bigger zones and biosphere reserves to remove conflict. (Make agreements with land owners to find a common ground for migration and other stuff of sort)

24
Q

What is the problem with finding common ground with farmers?

A

Bovine tuberculosis.

Carried by elk, kills cows

25
Q

What’s the difference between provincial and federal parks?

A

Federal try to make the landscape the way it was before humans, where as provincial try to make it work with humans at and equilibrium.

26
Q

What is a forest?

A

Ecosystem dominated by trees including vertical layers (canopy, shrubs, forest floor)

27
Q

What are the ecological values of a forest?

A
  • carbon store
  • biodiversity
  • movement of water and purification
  • oxygen production
  • soil development
28
Q

What’s are some stresses on Canadian forests?

A
  • logging
  • mining
  • hydro dams
29
Q

What’s are some the 2 forest types?

A

Secondary growth and old growth

30
Q

What is a secondary growth forest?

A

Regenerating forest after natural disaster or human activities, trees are more closely spaced, more vegetation in the forest floor and less biodiversity are all features of a secondary growth forest.

31
Q

What is an old growth forest?

A

About 100-500 years of age, they contain large trees, large dead trees, large logs on forest floor, multiple vertical layers
Lots of niches

Enviro Studies (7 decks)

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