problem solving workshop 2 (lecture 13) Flashcards Preview

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Flashcards in problem solving workshop 2 (lecture 13) Deck (4)
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1

Key terms:

- diagnose
- action plan
- conservation status

diagnose
- research programme

action plan
- conservation programme

conservation status
- is it threatened?
- i.e IUCN red list status

2

- botanical survey
- uplands of an oceanic island
- lowlands lost all natural vegetation
- natural habitat patches remain in upland

- a few individuals of an annual plant species new to science in a patch close to summit

describe and justify a plan to:
- diagnose threats to its survival
- conserve the species

WHAT ARE THE POSSIBLE THREATS?

- habitat loss

- habitat fragmentation

- habita degradation

- climate change

- small population paradigm: stochastic, environmental and demographic events, inbreeding

- invasive species: competing plants & grazers, including livestock

3

- botanical survey
- uplands of an oceanic island
- lowlands lost all natural vegetation
- natural habitat patches remain in upland

- a few individuals of an annual plant species new to science in a patch close to summit

describe and justify a plan to:
- diagnose threats to its survival
- conserve the species

WHAT WOULD YOU DO TO DIAGNOSE THE THREATS?

Habitat loss:
- random stratified survey to see which habitat types the species occurs in and variations in density e.g. using quadrats
- interview local people to see if they know of the species occurring at lower habitats or other habitat types
- maps or remote sensing to detect loss of habitat

Habitat fragmentation:
- random stratified survey to see how population densities/reproductive success vary across patches of different sizes

Habitat degradation:
- grazing: densities and seed set in areas with different grazing pressures. removal experiment to see effect
- invasive plant species: densities in areas with & without invasive species. again, removal experiment
- removal experiments link to conservation plan

Invasive species, competing plants, grazers, livestock:
- random stratified survey to see how population densities/reproductive success vary with presence of invasive species, competitors and grazers

Climate change:
- experimentally warm up patches to observe species responses: seed germination, flower production, pollination success (including trophic mismatch)
- bioclimatic envelope modelling - but need to consider
possible recent historical distribution at lower elevations

Small population size:
- study to look at allee effects and pollination
- genetic analysis of genetic diversity


4

- botanical survey
- uplands of an oceanic island
- lowlands lost all natural vegetation
- natural habitat patches remain in upland

- a few individuals of an annual plant species new to science in a patch close to summit

describe and justify a plan to:
- diagnose threats to its survival
- conserve the species

WHAT WOULD CONSERVATION ACTION WOULD YOU TAKE?

- look for species on nearby islands

- take seeds to establish captive population, check
for seed bank and encourage its regermination

- restrict habitat loss within patches containing
species (discuss voluntary & legal restrictions)

- consider alternative incomes for locals, such as
ecotourism

- other specific actions depend on threat diagnosis

- species-recovery curve: diagnosis, solution testing, deployment of solution, sustainable management