species richness
the number of species found in a habitat
state the three intertwined strands of biodiversity
- species diversity
- habitat diversity
- genetic diversity
describe how monoculture can cause loss of biodiversity
crop of only one clone of plants so little genetic diversity
two aesthetic reasons of maintaining biodiversity
- mental health
- inspiration for artists and musicians
three ecological reasons for biodiversity
- better withstand environmental changes
- loss of keystone species may change habitat
in situ
active management to maintain biodiversity in natural environment
ex situ
conservation outside of normal habitat of species
2 examples ex situ
seed banks, zoos
2 examples of in situ
game reserves, national parks
2 pros of in situ
- cultural heritage protected
- facilitates scientific research
2 cons of in situ
- extinction may still occur
- population may have already lost much of its biodiversity
2 pros of ex situ
- protected from poaching
- selective breeding can be used to increase genetic diversity
2 cons of ex situ
- exposure to diseases
- difficult to send back into wild as often do not reproduce with their own species anymore
state 2 aims of CITES
- monitor trade of plants/animals
- reduce trade of endangered species
state two aims of CBD
- conservation of biodiversity
- appropriate sharing of genetic resources
explain why opportunistic sampling may lead to overestimate in biodiversity
research may change sample using prior knowledge by collecting more of the rare species, so they may be over represented.
