ess 2 Flashcards
species
a group of organisms sharing characteristics that can produce offspring
population
a group of species that live in the same area
habitat
an area where certain species live
Niche
role that a species plays within the environment
ecosystem
environment where communities interact with each other
competition
species compete for resources - harmed not killed
paratism
species feeds off another without killing it
mutalism
both species benefit - flower and bees
commensalism
one species benitifs the other is not effected
predation
prey and predator - one Is killed for food
herbivory
animals consuming plants
intraspecies competiton
competition within the same species
interspecies competiton
different species compete for resources
producers
organisms producing their own energy - plants (photosynthisis)
consumers
costume the energy from the producers
pyramid of numbers
shows the amount (abundance) of species at each tropic level
productivity
conversion of energy into biomass
GPP
gross primary productivity = total amount of energy converted per unit are per unit time
NPP
net primary productivity = amount of new energy (GPP- R
secondary productivity
food passing used as energy
GSP
food eaten - feceas
NSP
GSP - R
biomagnification
increase of toxins in a substance
bioaccumulation
increase of non biodegradable substance