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Ecology
The study of living things and their interactions with each other and their environment
Ecosystem
A characteristic community of interdependent species interacting with the abiotic components of their environment
Population
All the members of a species interacting a specific area that can breed with each other
Community
All the members of all species in an area
Habitat
The place in an ecosystem where an organism lives
Niche
The role of an organism in an ecosystem , usually a Feeding role
Biotic
All the living and organic components of an ecosystem
Abiotic
All the non living parts of an ecosystem
Immigration
Moving isn’t a new habitat of the same species
Emigration
Moving out of a habitat of the same species
Intraspecific
Competition between individuals of the same species
Interspecific
Competition between members of different species
Lag phase
Synthesis of proteins, enzymes, aa, cell growth, sexual maturity is reached
Log phase/exponential
Exponential growth,doubling of population per unit time
Stationary phase
Nutrients are reduced , accumulation of waste , carrying hapacity is reached there is increased enviormental resistance , population growth= population death
Enviormental resistance
Density-dependent or density-independent factors that slow/limit th growth o the population.
Density dependent
Depends on the population size, DISEASE/FOOD AVABILITY /CMPETITION
Density independent
Doesn’t depend on the population size, temp light intensity
Succession
The change in structure and species composition of a community over time
Sere
The different stages in a succession when particular communities dominate
Zeroes
A plant succession that is limited by water avability
Hydrosere
Succession bringing in pods, lakes or elsewhere in water
Climax community
The inal and stable stage, endpoint of succession no further change , at equilibrium
Formula for potosyinthetic efficiency
Pe=quantity of energy incorporated into product/quantity of energy falling on the plant x100
Why is not all the light absorbed by photosynthetic pigments?
Some is the wrong wavelength
Som are transmitted straight through the leaf
Gross primary productivity(GPP)
Rate at which light energy is converted to chemical energy in photosynthesis
-eg producingglucose
Net primary productivity(NPP)
Energy in the plants biomass which is available to primary consumers