3.3 Flashcards

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1
Q

pros of ex-situ

A

protects from poaching
selective breeding- artificial
cna keep stud books
can store seeds in seed banks
education
control inbreeding
money used for conservation

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2
Q

cons of ex-situ

A

expensive
small population size
hard to intergrate
behavior change
may not be able to integrate back into wild
wild population affected

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3
Q

pros of in-situ

A

dont move speicies
not disruptive
no behavior change
protects habitat as a whole
encourages eco tourists
allows scientific studies

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4
Q

cons of in-situ

A

requires large areas
increased risk of interbreeding
risk of poaching
risk of disease

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5
Q

whys maintain biodiversity

A

loss of biodiversity means fewer species
loss of endemic species leads to extinction
species may be usefull e.g. medicine
survive extreme conditions
monatery value
ethical

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6
Q

genetic bottleneck

A

when the population greatly reduces in size
so reduces gene pool
so prob of inheriting recessive alles is larger

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7
Q

biodiversity

A

a measure of the variety of living organisms in a habitat and their genetic diversity

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8
Q

species richness

A

number of different species in an area

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9
Q

species eveness

A

relative number of different types of species

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10
Q

index of biodiversity

A

d= N(N-1)/ Σn(n-1)
N-total no
n-total no of each species

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11
Q

endemism

A

endemic species are only found in one place

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12
Q

genetic diversity

A

total no of different alleles in the gene pool of a population

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13
Q

ex situ conservation

A

take place outside natural habitat e.g zoos

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14
Q

in situ conservation

A

in natural habitat e.g natural parks

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15
Q

provisioning

A

provisions we need
e.g food clothes medicine

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16
Q

regulating

A

maintain and regulate enviroment
e.g air quality water purifacation

17
Q

supporting

A

support other ecosystems
e.g nutrient cycling

18
Q

cultural

A

human health and wellbeing
e.g tourism education

19
Q

seed banks

A

variety of seeds from each species is kept
low temps
low humidity
airtight containers
tested for viability