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49 Cards in this Set

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Ecology
the study of interactions between organisms and their environment
Species
lowest level in ecosystem
Population
all the organisms of the same species in an area
Community
all the organisms in an area
Ecosystem
the collection of all the organisms that live in a particular place together with their nonliving environment
Biome
a group of ecosystems that have the same climate soil conditions and dominant communities
Biosphere
the part of earth in which all life exists including land water and air/atmosphere
Biotic
having to do with living or biological things
Abiotic
having to do with nonliving or physical things
Trophic levels
a step or level in a food chain or a food web. Producers → consumers for 2nd 3rd 4th 5th…
Autotrophs
organisms that can capture energy from sunlight or chemicals and use it to produce their own food from inorganic compounds. Sometimes called producers
Producers
autotrophs
Photosynthesis
light energy used to power reactions of water and CO2 to energy
Chemosynthesis
when organisms use chemical energy to produce carbs
Heterotrophs
called consumers
Consumers
rely on other organisms for energy and food
Herbivores
get energy from eating plants
Primary consumers
something that eats a plant-first one to eat it
Carnivores
eat animals
Omnivores
eat plants and animals
Secondary consumers
something that eats plants and animals-the second one to get energy
Tertiary consumers
mostly carnivores and some omnivores-the third to get energy
Detrivore
consumers which feed off of plant and animal remains
Decomposer
organisms which break down organic matter into organic form
Food chain
simplest representation of energy flow in a community
Food web
links all the food chains in an ecosystem together and describes the complex interactions and relationships between organisms
Ecological pyramid
energy numbers and biomass
Energy pyramid
show the 90% loss of energy per level
Number pyramid
shows numbers of animals or plants in the ecosystem
Biomass pyramid
shows amount of tissue in grams per level
Biogeochemical cycle
a cycle involving life forms and nutrients like water or nitrogen
Algal bloom
when a nutrient becomes abundant in oceans causing a large amount or algae to start growing. They use it all up quickly and die
Climate
the main attitudes or environmental conditions of a place
Greenhouse effect
when the greenhouse gases trap sunlight and send it back to earth to heat it up
Global warming
when there are too many greenhouse gases and it heats the earth up too much
Ecological niche
the job of an organism in it’s environment
Transpiration
the passage of water through a plant from the roots through the vascular system to the atmosphere
Evaporation
the process by which water changes from a liquid to a gas
Condensation
the process by which a gas or vapor changes to a liquid
Seepage
water that trickles out of the ground to form a pool
Runoff
something that drains or flows off
Precipitation
rain hail snow etc.
Root uptake
the amount of water that plants roots absorb
Competition
different organisms fighting for control of an environment
Predation
one organism feeding on another
Symbiosis
two different species of organisms living together
Mutualism
two organisms in a mutually positive relationship
Commensalism
two organisms with one benefiting from their relationship but with the other neither benefiting nor being impeded by the relationship
Parasitism
two organisms with one benefiting from their relationship but with the other suffering because of it