Conservation lecture 3 Flashcards

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1
Q

What is biodiversity

A

the diveristy of a biological system
- number of species
- ecosystem diversity
- chemical diversity
- genetic diversity

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2
Q

Why is biodiversity important?

A
  • medicines ( most medicine come from living organisms)
    without biodiversity, it will make a huge impace on pharmaceuticals
  • agriculture( crop diversity is important for food being available to all and if ecosystem conditions change in an area, crops may not be able to grow there
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3
Q

What is agriculture?

A

the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products

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4
Q

What are the reasons for extinction?

A

1) human population size
2) pollution
3) global climate change
4) habitat loss
5) over - hunting

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5
Q

What is forest fragmentation?

A

the splintering apart of forested areas into isolated fragments
- poses a distinct threat to both animal/plant populations
-commercial logging for forest products, trees are chopped down for fuel
- road building: roadkill, alteration of physical environment, spread of invasive species

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6
Q

Why do humans hunt wildlife?

A

Is the greatest threat to large tropical mammals (pet trade, food- wild meat ( subsistence, cash income)

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7
Q

What is conservation biology?

A

scientific discipline that aims to provide knowledge and guidance necessary to maintain biodiversity

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8
Q

What are the four types of living species in context of conservation?

A
  • keystone
  • foundation
  • indicator
  • flagship
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9
Q

What is a keystone species?

A

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

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10
Q

what is a foundation species?

A

a dominant primary producer in an ecosystem both in terms of abundance and influence

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11
Q

What is an indicator species?

A

A species whose presence may indicate the overall “health” of the environment

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12
Q

What is a flagship species?

A

charismatic species that can engender support from the public, chosen for their vulnerability and attractiveness

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13
Q

What are the conservation tactics to protect biodiversity?

A

1) sustainable utilization
2) captive breeding and re - introduction of animals
3) education
4) habitat protection

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14
Q

What is sustainable utilization? Provide example.

A

It encourages people to use resources sustainably
- makes natural resources economically viable to local people and they will want to conserve it

Example: ecotourism
- many tourists pay $500 plus hotel costs to see gorillas - $200 million annually
- tourist dollars have funded conservation efforts and boosted gorilla populations from 650 in mid 1990s

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15
Q

What is captive breeding and re - introduction? Provide examples.

A

Goals of captive breeding programs
- increase the size of the wild population
- increase the genetic diversity of the wild population
-expand geographic distribution of the wild population
- a small number of animals have the possibility of increasing their numbers through captive breeding programs

Example: golden lion tamarin monkey in Brazil
- In the 1970s, > 200 in Atlantic coastal forest
- captive breeding program started for GLT in zoos in Brazil and NA, then animals were introduced back to native forest

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16
Q

What is conservation tactic (education)

A

Education programs can help foster sustainable behavior, improve public support for conservation, reduce vandalism and poaching in protected areas, improve compliance with conservation regulations

17
Q

What is conservation tactics (habitat protection)

A
  • generally agreed to be the best strategy because it protects the animals and the entire ecosystem
  • population density is usually higher in protected areas and habitat loss may cease in the protected area while it continues around them
18
Q

What are Soule postulates of conservation biology?

A

1) diversity of organism is good
2) ecological complexity is good
3) evolution is good
4) biotic diversity has intrinsic value

19
Q

What is the goal of conservation biology

A
  • not to preserve every species forever
  • to preserve ecosystems/biomes/habitats in such a way that a diversity of species is maintained
20
Q

What are the three modern conservation movements

A
  • take variety of perspectives into account
  • romantic transcendental conservation ethic
  • resource conservation ethic
  • evolutionary ecological land ethic
21
Q

What is romantic transcendental conservation ethic

A
  • nature important for reasons other than economic gain
  • need to preserve nature in pristine state
  • nature is spiritual and meditative
22
Q

what is resource conservation ethic

A
  • is centered around human use of nature
  • natural resources important quality of life and from an economic standpoint
  • find the most economically efficient use of nature and natural resources
23
Q

what is evolutionary- ecological land ethic?

A

land is a complex integrated system with components and processes
- not made of useful and useless parts
- very influential to modern conservation ethics

24
Q

What are the aims of conservation biology?

A
  • maintain ecosystem function and diversity
  • maintain the diversity of genes, populations, habitats, ecosystems and the processes normally carried out by them including natural selection
  • keep normal evolutionary processes working within a functioning ecological setting