ecology

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