Lecuree 5- Why Conserve Biodiversity? Flashcards
What is conservation biology?
The applied science of maintains biodiversity on earth. This is an interdisciplinary and applied science.
When was conservation biology first developed?
1978
What are the four key aims of conservation biology?
- Prevent species extinction
- Maintain species diversity
- Maintain ecosystem function and interaction
- Restore injured communities/ species interactions
What are the 6 key reasons to maintain diversity?
- Instrumental value
- Strategic value
- Cultural value
- Ecological value
- Intrinsic (no use) value
- Uniqueness value
Give example intrinsic value of biodiversity
Food, medicine, fuel, pollination, press control, tourism etc
What are the three key species of strategic value in conservation?
- Indicator species
- Umbrella species
- Flagship species
What are indicator species, and how do they provide strategic value in conservation?
Indicator species are those that reflect changes in environment and community composition, and can thus be used to deduce changes in surrounding environments
What are umbrella species and why do they provide strategic value
Species that gave large area requirements, and thus protecting then will protect a lot of other species within their habitats. Eg. Jaguar
What is a flagship species and how does it provide strategic value to conservation
These species can be used to rally public support to protect particular ecosystems
Give an example flagship species
Panda bears
What are the two important species performing ecological functions, and are important in conservation
- Keystone species
2. Dominant species
What is a keystone species
One whose ecological role is disproportionate to relative abundance
What I’d a dominant species
One that comprises a large proportion of the ecosystems overall biomass
What is the ecological role of species (that contribute to conservation)
Species play an important role in maintains the overall health/function of an ecosystem
Why does intrinsic value make conservation difficult?
Subjectivity in the value of species increases difficulties in prioritisation
