Ch. 3 Flashcards
limiting factor
abiotic/biotic factor that restricts the numbers and reproduction, or distribution of organisms
community
group of interacting populations that also includes plants, other animals, bacteria, & fungi
tolerance
ability of an organism to survive when subjected to abiotic factors/biotic factors
ecological succession
establishment of a community in an area of exposed rock that doesn’t have any topsoil
climax community
stable, mature community that results when there is little change in the composition of species
secondary succession
orderly and predictable change that takes place after a community of organisms has been removed but the soil has remained intact
weather
condition of the atmosphere at a specific place and time
latitude
the distance of any point on the surface of the earth north or south from the equator
climate
average weather conditions in an area including temperature and precipitation
tundra
treeless biome with a layer of permanently frozen soil below the surface called permafrost
boreal forest
broad band of dense evergreen forest extending south across north america europe and asia
temperate forest
composed of broad leaved, deciduous trees
temperate forest
Composed of broad-leaved, deciduous trees that shed their leaves in autumn
woodlands
Found in areas with less annual rainfall than in temperate forest
grassland
A biome that is characterized by fertile soils that are able to support a thick cover of grasses
desert
any area in which the annual rate of evaporation exceeds the rate of precipitation
tropical savanna
Characterized by grasses and scattered trees in climates that receive less precipitation than some other tropical areas
tropical seasonal rainforest
grow in areas of Africa, Asia, Australia, and South and Central America
tropical rainforest
Warm temperatures and large amount of rainfall throughout the year
sediment
material that is deposited by water,wind, or glaciers
littoral zone
the area closest to the shore
limnetic zone
the open water that is well lit and is dominated by plankton
plankton
free-floating photosynthetic autotrophs that live in freshwater or marine ecosystems
profundal zone
minimal light is able to penetrate through the lemnetic zone into the deepest areas of a large lake
wetlands
areas of land such as marshes,swaps, and bogs that are saturated with water and that support aquatic plants
estuary
an ecosystem that is formed where freshwater from a river or stream merges with salt water from the ocean
intertidal zone
a narrow band where the oceans meet land
photic zone
the area to a depth of about 200 m of the pelagic zone
aphotic zone
an area where sunlight is unable to penetrate
benthic zone
the area along the ocean floor that consists of sand,salt, and dead organisms
abyssal zone
the deepest region of the ocean