population and sustainability Flashcards
define population
all the organisms of one species in a habitat
what is population size
the total number of organisms of a species in a habitat
what factors affect population size
abiotic factors like light intensity, temperature and chemical conditions
biotic factors like interspecific competition and infraspecific competition and predation
what is intraspecific competition
when organisms of the same species compete with each other for the same resources
what is interspecific competition
when organisms of different species compete with eachother for the same resources
what is carrying capacity
the maximum stable population size of a species that an ecosystem can support
give one example of a population size limiting factor where one is abiotic an one is biotic
abiotic- limited habitats
biotic- interspecific competition
what is conservation
the protection and management of ecosystems so that the natural resource in them can be used without them running out
give the economic, social and ethical reasons for conservation
economic- ecosystems provide resources like drugs and clothes, trade would come to a halt
social- people use them for activities, future generations not able to enjoy these ecosystems
ethical- moral reasoning, can help to prevent climate change, prevent disruption of food chains
what is preservation
protection of ecosystems so they’re kept as they are
how can temperate woodland be managed
trees cleared in patches as woodland grows back faster in small areas with large woodland surrounding
clear felling
planted and attached to posts for support
trees not plantd to close together
how can fishing be managed
fishing quotas and mesh sizes being limited
