ecology unit test Flashcards
what would happen if you remove something from an ecosystem
the existing harmony will be offset and the entire system will go through a change, large or small
from a food web the things that take place with energy are
Energy is then transferred to a primary consumer, then secondary, tertiary, and quaternary consumers in sequence
primary succession vs secondary succession
Primary succession occurs in an environment without previous life, or a barren habitat. Secondary succession occurs in an area that had previously been inhabited but experienced a disturbance, such as a wildfire. In this scenario, there still would be soil.
cause decay and relase nutrients back into the environment; crucial for the circle of life
decomposer
multiple connected food chains showing the complex interactions within an ecosystem
food web
the path of energy though the trophic levels
food chain
aka autotrophs, produce energy by capturing sunlight or using chemicals (plants, alage, some bacteria)
producers
aka heterotrophs, organisms that come other organisms for food
consumers
the population size that an environment can sustain, the population will decrease
carrying capacity
how to figure out the rate of growth of a population
taking the current population size and subtracting the previous population size. Divide that amount by the previous size. Multiply that by 100 to get the percentage.
exponential vs logistic growth
The exponential growth model describes how a population grows when it has unlimited resources. when a population’s per capita growth rate decreases as population size approaches a maximum imposed by limited resources, the carrying capacity. Expontential=j logistic= s
parasitism, and examples of parasites
the practice of living as a parasite in or on another organism, leas, ticks, parasitic mites, leeches, worms
a type of relationship between two living organisms in which one organism benefits from the other without harming it, Orchids Growing On Branches.
Sharks And Remora/Sucker Fish.
Whales And Barnacles.
Tree frog on plants.
Burdock Seeds On Animals.
commensalism
a type of symbiotic relationship where all species involved benefit from their interactions, between the flower and the insect pollinators
mutualism
each trophic level can only give 10% of its energy to the next level.
ten percent law