48 terms

Ecology

STUDY
PLAY

Terms in this set (...)

Savanna
A tropical / subtropical grassland biome with scattered individual trees, large herbivores, and three distinct seasons based primarily on rainfall, maintained by occasional fires and drought.
Desert
A region of little vegetation, either cold or hot, that receives ten inches or less of precipitation each year, long periods without rain, deserts have extreme temperatures.
Tundra
Biome that surrounds the north and south poles; treeless landscape with short, cool summers, and long, very cold winters with short periods of winter sunlight, beneath the topsoil is a layer of permafrost.
Temperate deciduous forest
Characterized by warm summers, cool winters, has all four seasons, year-round precipitation and fertile soil
Marine
Biome that includes open ocean, seashore, and it covers 75% of the planet. There is a very high salinity level, and a wide variety of animals
abiotic
All of the non-living parts of an ecosystem.
biotic
All of the living components of an ecosystem
biomass
Total amount of living tissue within a given trophic level.
herbivore
A consumer that eats only plants.
carnivore
A consumer that eats other animals
omnivore
A consumer that eats both plants and animals.
producer
An organism that can make its own food.
Taiga
A biome in which the winters are cold, but summers are mild enough to allow the ground to thaw, it contains mostly coniferous forests.
prey
An organism that is hunted, killed and eaten by another organism.
predator
An animal that hunts, and kills other animals for food.
food web
A diagram that shows the feeding relationships between organisms in an ecosystem; it contains multiple overlapping food chains.
food chain
A diagram that represents how energy in food flows from one organism to the next in an ecosystem.
energy pyramid
A diagram that shows the amount of energy that moves from one trophic level to another in an ecosystem.
predation
An interaction in which one organism captures and feeds on another organism to gain energy.
competition
Ecological relationship in which organisms compete for available resources.
commensalism
An ecological relationship between two species where one benefits and the other is unaffected
mutualism
A relationship between two species in which both species benefit.
parasitism
A relationship between two organisms of different species where one benefits and the other is harmed.
carbon cycle
The movement of carbon between inorganic pools and organic pools in the environment
combustion
Burning of fossil fuels and wood, releasing energy and carbon dioxide.
photosynthesis
Process used by plants to capture and convert the sun's energy, water, and carbon dioxide into glucose (sugar).
conservation
The preservation, wise use, and protection of natural resources.
tropical rainforest
Biome characterized by hot temperatures, large amounts of rainfall, and high biodiversity,that grows near the equator; it receives large amounts of rain, and has dense growths of tall, leafy trees; the weather is warm and wet year-round; few plants live on the dark forest floor.
ecology
The study of the relationships between organisms and their environment.
ecosystem
Living organisms interacting with each other and their nonliving environment.
decomposer
An organism that decays dead matter and recycles its' nutrients back into the soil.
biome
Regions of the world with similar biotic and abiotic characteristics including climate, landscape, plants and animals.
detritus
Dead plant matter that contributes to the organic soil carbon pool.
trophic level
Each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.
carbon flux
Amount of carbon exchanged between earth's carbon pools per unit time
habitat
The place an organism lives.
examples of abiotic factors
water, soil, light , minerals, wind, air, temperature, pollution
examples of biotic factors
Plants, Animals, Fungi
death rate
The number of deaths in a population in a certain amount of time.
birth rate
The number of births in a population in a certain amount of time.
migration rate
The number of organisms that move in and out of a specific area.
limiting factors
The resources that organisms need to survive. When unavailable these factors limit a populations' ability to grow/increase.
Example: resources such as food, water or space become limited
host
An organism on which a parasite lives.
parasite
An organism that feeds on a living host
camouflage
An organism hides by blending its appearance with its environment
Grassland
biome consisting of large, rolling terrains of grasses, flowers and herbs where the average annual precipitation is great enough to support grasses, and in some areas a few trees.
Freshwater
Biome made up of any of body of water such as lakes, ponds, streams, and rivers. They cover roughly 20% of the Earth and are in various locations spread out all over the world. Most consist of moving water and contain many types of fish.
adaptation
Any feature an organism has to help it survive in its' environment.

Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com.
Click to see the original works with their full license.