Main Calculations and Essentials For ESS Flashcards Preview

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Flashcards in Main Calculations and Essentials For ESS Deck (38)
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1
Q

N1 Lincoln index

A

Number of species captured and marked

2
Q

N Lincoln index

A

Total estimated population

3
Q

N2 Lincoln index

A

Total number of species recaptured

4
Q

M Lincoln index

A

Total number of marked species within the recaptured sample

5
Q

Lincoln index

A

N = n1 x n2 over M

6
Q

D Simpson’s index

A

Species diversity index

7
Q

N Simpson’s index

A

Total number of organisms of all species

8
Q

n Simpson’s index

A

Total number of organisms of each species

9
Q

Σ Simpson’s index

A

Τhe sum of

10
Q

Simpson’s index formula

A

D = N ( N - 1) over Σn (n - 1)

11
Q

Crude Birth Rate (CBR)

A

Number of births / population size x 1000

12
Q

Crude Death Rate (CDR)

A

Number of deaths / population size x 1000

13
Q

Natural increase rate

A

(Crude birth rate - crude death rate) / 10 *migration is ignored

14
Q

Doubling time

A

70 / natural increase rate

15
Q

Sustainable yield

A

annual growth and recruitment - annual death and emigration

16
Q

Sustainable yield

A

Total biomass at t + 1 over energy - total biomass at time t - energy

17
Q

Net primary productivity

A

Gross primary productivity - r (R = respiratory loss)

18
Q

Productivity is measured

A

Per unit area per unit time. EG: per metre ^2 per year

19
Q

Net secondary productivity

A

Gross secondary productivity - r (R = respiratory loss)

20
Q

Ecotourism

A

Biodiversity is the subject of aesthetic interest. People rely on wild places and living things in them for spiritual fulfilment

21
Q

Historic ozone depletion

A

Since ozone was first measured in the (??), reduction has been recorded. A reduction between 5-15% was recorded during the 1980s

22
Q

Remediation

A

The action of providing a remedy to something, in particular the reversal or stop to environmental damage

23
Q

Efficiency =

A

Work or energy produced / energy consumers

24
Q

Efficiency =

A

Useful output / useful input (x 100 if you want percentage)

25
Q

Efficiency of assimilation

A

Gross productivity x 100 over food eaten

26
Q

Efficiency of biomass productivity

A

Net productivity x 100 over gross productivity

27
Q

Aquatic food chain

A

Phytoplankton (dinoflagellates), Zooplankton (Shrimp), Tuna, Shark

Phytoplankton, Zooplankton (copepods), lantern fish, squid, tuna

28
Q

Food chain

A

Grass, grasshopper, frog, snake, hawk

29
Q

Tundra food chain

A

Grass, snowshoe hare, Canada lynx

30
Q

Forest food chain

A

Grass, Deer, Wolf

31
Q

Keystone species

A

Dominant predator whose removal allows prey population to explode decreasing overall diversity, altering the habitat around them

32
Q

Umbrella species

A

Selected for making conservation related decisions, protecting these indirectly protects the many other species that make up the ecological community of its habitat

33
Q

Carnivore

A

Animal that feeds on other animals or meat (Lion, wolves, tigers, hawks)

34
Q

Herbivore

A

Animal that feeds on plants (Rabbits, deer, zebras)

35
Q

Omnivore

A

Animal that eats both plants and animals (Humans, Bears)

36
Q

Abiotic

A

Non-living, physical factors that influence the organisms and the ecosystem, eg: temperature, sunlight, pH, salinity, pollutants (how much space there is, availability of water, light etc)

37
Q

Biotic

A

Living components of an ecosystem - organisms, their interactions or their waste, that directly or indirectas affect another organism (every relationship an organism may have, where it lives, How it responds to resources, predators, to competitors, how it alters these)

38
Q

Carrying Capacity

A

The maximum number of A species that can sustainably be supported by a given area/habitat/environment