Ecosystem and Biodiveristy
what is a population
group of the same species living in one area
The cycle that describes the circular path of water from the atmosphere, surface, and ground
hydrologic cycle
What is a habitat?
All the abiotic and biotic factors in an area where an organism lives
Name two pioneer species
lichen and moss
Term for when one organism captures and feeds upon another organism
predation
what are organisms that make their own food from chemicals on deep see vents rather than sunlight
Chemosynthesizers
what animal releases a lot of carbon in the form of methane
cow
Two seperate species that occupy similar niches in geographically separate areas
ecological equivalents
What occurs before secondary succession
flood or forest fire
What is species using different physical areas or zones in a habitat
niche partitioning
Producers are organisms that make their own food, but they are also called what?
autotrphs
what cycle does not have a atmospheric portion?
phosphorus cycle
What survivorship curve shows low levels of infant mortality
Type I
What is the main difference between primary and secondary succession?
Primary starts from bare rock and secondary starts with soil
What kind of dispersion in happening when individuals live close together in groups in order to facilitate mating, protections, and access food
clumped dispersion
If my producer has 100 jules of energy how many jules of energy does the secondary consumer get?
1 jules
Bacteria converts gaseous nitrogen into ammonia in what process?
nitrogen fixation
Nemo is an example of what kind of survivorship curve
Type III
What can cause an ecosystem to go through primary succession?
glacial retreating or volcanic explosion
what does the greek word sumbios mean?
living together
What is the total dry mass of organisms in a given area ?
Biomass
What is the term when decomposers break down animal waste into nitrogen and return it to the soil as ammonium
ammonification
Natural disasters affecting population is what kind of limiting fator?
Density- dependent limiting factor
When resources are abundant and a population has the opportunity to grow rapidly what growth occurs?
exponential growth
A sloth displays what kind of dispersion?
Random Dispersion