populations Flashcards
preservation
keeping species & habitats as they are now
-keeping things natural and eliminating human effects
conservation
more active management involving human intervention
conservation strategies
vaccinate
ex situ zoos
controlling predators
control poaching (illegal hunting and capturing of animals)
why conserve
-ethics (every species has value)
-ecotourism generates money
-animals and plants are food source
preservation strategies
migration , emulation
sustainable development
development that does not cause excessive harm to the surrounding environment, still meeting the needs of the present ands the future
coppicing
stem of deciduous tree is cut close to ground ( getting new shoots)
+ sustainable supply of wood
+narrow stems used for firewood etc
pollarding
cutting stem of tree higher up to avoid deer eating emerging shoots
clear felling
where most of the trees are cut down
selective felling
removing only the largest most valuable trees
- any tree harvested MUST be replaced
succession
process where overtime plants start to develop in an area
deflected succession
when succession is stop of interfered with in such a way
to sample you must:
-wear suitable clothing
-wear suitable footwear
-have keys to identify organisms
-have correct apparatus
carrying capacity
the maximum population an environment can support
immigration
movement of individuals to a specific area (increase population size)
