deck Flashcards
(21 cards)
energy flow
the passage of energy in a one-way direction through an ecosystem
producers/autotrophs
feed themselves
consumers/heterotrophs
“Different Nurishishment” use other organisms as food
primary consumers/herbivors
eat only plants
omnivores
eat a variety of organisms both plant and animal
hippo-tilapia connection
?
detritivores
consume detritus, which is animal carcasses, leaf litter, ect
decomposers
eat “rotten” food from animals
food chain/web
where food passes from one organism to an other and so on and so fourth
trophic level
a number based on the amout of energy transfer steps to that level
krill
organisms that are tiny and shrimp like
causes for collaplse of Antartic Food Web
GLOBAL WARMING MESSING EVERYTHING UP
Ecological Pyrimids
graphical representations reletive energy levals of each trophic level
Biomass
is a quantitative estimate of the total mass, or amount, of living material; indicates energy leval at certain time
Energy
illustrates the energy content, often expressed as kilocalories per square meters per year, of the biomass of each trophic level
Numbers
?
GPP
gross primary productivity
NPP
net primary productivity
GSP
?
NSP
?
Vitousek’s and Rojstaczer’s research
calculated how much of the global NPP is appropriated for the human economy and therefore not transfored to other organisms
