Topic 2, the ecosystem - flashcards

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IB Diploma ESS (The Ecosystem) Flashcards on Topic 2, the ecosystem - flashcards, created by JonesKamel on 29/03/2014.
JonesKamel
Flashcards by JonesKamel, updated more than 1 year ago
JonesKamel
Created by JonesKamel over 11 years ago
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Question Answer
Ecosystem A community of interdependent organisms and the physical environment they inhabit
Community A group of populations living and interacting with each other in a common habitat
Biotic Living components within an ecosystem
Abiotic Non-living factors of an ecosystem
Trophic level Position that an organism or a group of organisms in a community occupies in a food chain
Species A group of living organisms consisting of similar individuals capable of interbreeding and producing fertile offspring
Population A group of individuals of the same species living in the same area at the same time
Habitat The environment where a species normally lives
Niche The status of an organism within its environment and community - how it 'makes a living'
Biome A collection of ecosystems sharing common climatic conditions
Biospehere The part of the Earth that is inhabited by organisms
Productivity Production per unit time
Gross productivity Total gain in energy or biomass per unit area per unit time
Net productivity Gain in biomass per unit area per unit time that remains after respiration
Primary productivity Productivity by plants
Secondary productivity Productivity in animals
Net primary productivity (calculation) NPP = GPP - R
Net secondary productivity (calculation) NSP = GSP - R
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