Ecology Flashcards
Abiotic Factors
A non-living chemical or physical component in the environment that affects the ecosystem/organisms
Biotic Factors
A living component in an environment that affects that affects the ecosystem/organisms
Succession
The order in which species appear in an ecosystem over time. .
Sediment
Solid material that can be rocks or minerals
Hydrological Cycle
.Water cycle, also called hydrologic cycle, cycle that involves the continuous circulation of water in the Earth-atmosphere system. Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation, and runoff
Nitrogen Cycle
.1. Fixation: Changing N2 to NH3 2. Nitrification: Changing NH3 to nitrates so it can be absorbed by plants. 3. Assimilation: Plants absorb nitrates from soil 4. Ammonification: When plants/animals die, the nitrates convert back to NH3 to reenter the cycle 5. Denitification: Excess N2 gets put back in the atmosphere
Logistical Growth
The geometric or exponential growth of all populations is eventually curtailed by food availability, competition for other resources, predation, disease, or some other ecological factor.
Exponential Growth
The bigger the population, the faster it grows. As the j shape reveals, the size of a population growing exponentially
Ecosystem
.An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system
Energy Flow of a Food Web
There is a single path through a food chain. Each organism in a food chain occupies a specific trophic level (energy level), its position in the food chain or food web..
Trophic Level
.A group of organisms that occupy the same level of the food chain
Carbon Cycle
.The carbon cycle is the process in which carbon travels from the atmosphere into organisms and the Earth and then back into the atmosphere. Plants take carbon dioxide from the air and use it to make food. Animals then eat the food and carbon is stored in their bodies or released as CO2 through respiration.
Competition
.Competition occurs in nature when you have organisms that coexist in the same territory and they compete for things like food, mating, etc.
Carrying Capacity
.The carrying capacity of an environment is the maximum population size of a biological species that can be sustained by that specific environment