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ML Chapter 3

The amazing person that made this StudyStack Ashley B
Ecology The scientific study of interactions among organisms and their environment
species a group of similar organisms that can breed and produce fertile offspring
population a group of individuals that belong to the same species and live in the same area
community different population groups that live together
habitat where the animals live
ecosystem all the organisms that live in an area with their physical environment
biome entire planet
biotic factors anything living in an environment
abiotic factors any nonliving part in an ecosystem
environment all conditions or factors surrounding an organism
observation first step to ask about technology
experimentation-used to test hypothesis
models made to better understand things
Autotroph/primary producers use the sun to make there own food
chemoautotrophs chemical energy is used to produce carbohydrates
photosynthesis captures light energy and uses it to power chemical reactions to turn it into carbon dioxide
heterotrophs rely on other organisms for their energy
consumer rely on other organisms for energy and nutrients
herbivores eats plants
omnivores eats both plants and animals
carnivores eats animals
detritivores feed on detritus often obtaining extra nutrients from the bacteria,algae, and other microorganisms that grow on and around it
decomposers feed by chemically breaking down organic matter
scavengers animals that consume the carcasses of other animals that have been killed by predators or have died of other causes
food chain a series of steps in which organisms transfer energy by eating and getting eaten
foodweb network of complex interactions formed by the feeding relationship among various organisms in an ecosystem
phytoplankton floating algae
zooplankton diverse group of small swimming animals
trophic level each step of the food web or food web
ecological pyramids show the amount of energy or matter contained within each trophic level
energy pyramid the steps of gaining energy
10% rule the process in which 10% of the energy in each trophic level gets passed on to the next
trophic cascade is when one disruption to the food web causes a chain of events to happen
biogeochemical cycles closed loops that elements pass from one organism to the next through
water cycle the process of how water moves
condensation the conversion of a vapor or gas to a liquid
precipitation rain, snow, sleet, or hail that falls to the ground
transpiration process where plants absorb water through the roots and then give off water vapor through pores in their leaves
evaporation process of a substance in a liquid state changing to a gaseous state due to an increase in temperature and/or pressure
respirations breathing
nutrients a substance that provides nourishment essential for growth and the maintenance of life
carbon/oxygen cycle process of carbon dioxide being released into the atmosphere by human activities
equation of life 6CO2
nitrogen cycle the process of humans adding nitrogen to the biosphere through the manufactures and use of fertilizers
nitrogen fixation/ammonification
denitrification the process of bacteria converting nitrogen gas into ammonia
assimilation this is the process that brings
bacteria are microorganisms important for the nitrogen cycle and decomposition
phosphorus cycle the process of rocks and sediments wearing down and releasing phosphorus
dissolved phosphorus phosphorus dissolved in the water.
limiting nutrients nitrogen
stream chemistry all the different chemical properties that affect the quality of the aquatic environment.
parameters the acceptable range of different properties of the stream
pH a figure expressing the acidity or alkalinity of a solution on a logarithmic scale
buffer a solution that resists changes in pH when acid or alkali is added to it
DO the amount of gaseous oxygen (O2) dissolved in the water
dead zones a place with no life
hypoxia efficiency in the amount of oxygen reaching the tissues
pollution the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects.
fertilizers a chemical or natural substance added to soil or land to increase its fertility
nutrient loading quality of nutrients entering an ecosystem
discharge the amount of water that passes a point during a certain period of time.
eutrophication excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen
concentration the measure of the amount of a sub-component (especially solute) in a solution
nitrification process in which water becomes polluted, loses oxygen, turns into dead zone
Created by: willsm