ecology Flashcards
biome
large group of ecosystem with a similar climate
ecosystem
all living and non-living components of an area
community
all various populations in an area that interact
population
group of the same species interbred
species
include all similar organisms which can interbred and produce viable offspring
ecology
study of interactions amoung organisms and their environment
abiotic
non living
biotic
living
aquatic ecosystems
oceans lakes streams wet lands
terrestrial ecosystems
land based
biodiversity
variety of organisms in an ecosystem
organism
signle living thing w in an ecosystem
habitat
where an organism maintains food shelter moister and temp levels that it needs
niche
unique job or role
energy flow
transfer of energy from one organism to another
energy pyramid
shows the direction that energy flows and each level on the pyramid is called a tropic level
what is at the bottom of an energy pyramid
producers
what is 2nd on the energy pyramid
consumers
symbiosis
when organisms have close relashinships w others in an ecosystem
mutalism
when both organisms benifit
parasitism
one organism is helped, the other is harmed
commensalism
1 organism benefits and there no harm for the other one
geographic distrribution
range of the population
- the term that describes the area that is inhabited by the population
what does dynamic mean
they change in size and composition over time
what are the 3 factors that determaine population
of birth,death, individuals that leave + enter
exponential
when the graph increasingly goes up
logistic
when the graph may his carrying capacity
producers( autotrophs)
rely on suns energy, water, co2 to create glucose and oxygen
consumers (heterotrophs)
use oxygen and glucose and place co2 and water back into the atmosphere
biochemical cycles
when elements, chemical compounds etc. are passed from one organism to another from one part of biosphere to another
- water carbon, nitrogen, phosphorus cycles
water cycle
Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow.
what is steos in the carbon cycle
Carbon enters the atmosphere via carbon dioxide.
2. Carbon dioxide is absorbed and used as energy.
3. Carbon compounds enter the food chain.
4. Carbon reenters the atmosphere via decomposition.
5. The carbon cycle repeats
steps on nitrogen cycle
Nitrogen fixation
Nitrification
Assimilation
Ammonification
Denitrification
nitrogen cycle: Nitrogen fixation
the process by which nitrogen is taken from its molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other biochemical processes.
nitrogen cycle:Nitrification
the biological conversion of ammonia or ammonium to nitrite or nitrate.
nitrogen cycle:Assimilation
process by which inorganic nitrogen compounds are used to form organic nitrogen compounds
nitrogen cycle: Ammonification
When an organism excretes waste or dies, the nitrogen in its tissues is in the form of organic nitrogen
nitrogen cycle: Denitrification
the process that converts nitrate to nitrogen gas, thus removing bioavailable nitrogen and returning it to the atmosphere.
phrospurs cycle
Weathering.
Fertilizer. -Soil. -Direct Runoff.
Excretion and Decomposition.
Dissolved Phosphates (generally in ocean)
Geologic Uplift.
what is the human impact
carbon cycle- burning fossil fuels increase the amount of co2 in it which is too much to hold
nitrogen/phrospurs cycle- fossil fuels+ fertilizer= severe altercations
nitrogen- increase in harmful algal blooms
ecological succession
process of ecoglogical change in an ecosystem where one community overtime
primary succession
when a community forms in an area that was inhabited
pioneer species
first organisms to grow/arrive in an area
secondary succession
when an area was occupied but got destroyed
