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60 Cards in this Set

  • Front
  • Back
scientific study of interactions b/t oragnisms and their environment [abiotic/biotic]
abiotic factor
nonliving;temperature, light, water, nutrients
biotic factor
other living organisms
organismal ecology
behavorial, physiological, morphological ways where rganisms meet challenges posed by abiotic environment
group of invidials of one species that live in particular geological area
all organism that inhabit a particular area, a assemblage of populations of different species
a community and its physical environment
portion of earth inhabited by life, all of earth's communities and ecosystems
major types of communities and ecosystems that are typical of broad geographic regions
maintain constant internal environment over range of external conditions
allow internal environment vary over range of external conditions
principle of allocation
each organism has limited amount of energy that can be allocated for obtaining nutrients, escape predators, cope with environment, growth, reproduction
environmental grain
an ecological term for the effect of spatial variation, relative to size and behavior of an organism
fine grain / coarse grain environment
fine: patches relatively small to organism
coarse: patches so large
wildflowers: fine to horse, coarse to ant
reversible changes that shift an organisms tolerance curve in direction of environmental change
tropical forests
23.5 latitude, dry: lowland, dry, deciduous: wet and dry, rain: lots of rainfall, diverse animals/plants
grassland w/ scattered trees, 3 seasons, soil = nutrient poor, rich in diverse species, fire adapted vegetation, ecotones: forest/grassland biomes
driest of all iterrestial biomes, low rain, seed eating animals, light in color, b/t 15-35 latitude, drought resistance vegetation
30-40 latitude, mild rainy winters, long hot dry summers, spiny shurbs w/ tough overgreen leaves
temperate grassland
relatively cold temp, seasonal drought, soil = most fertile
temperate deciduous forest
mid latitude, broad leaf dec trees, sufficient moisture, lots of rain, rich soil, plant + animal diversity
coniferous forest, largest territorial biomes, long cold winters, short wet summers, thin poor nutrient acidic soil, leavy snowfall, thick winter coats
artic: shrubby matlike vegetiona, very cold, little ight, permafrost, low evap low temp = soil saturated, summer continuous daylight
alpine: all latitude if elevation high, mountaintop,
both: no diverse animal species
underlying soil remains permanently frozen preventing roots of plants from growing deep
photic zone
narrow top slice fo ocean where sufficient light for photosynthesis
aphotic zone
beneath photic zone, little light penetrates, no photosynthesis occur
narrow vertical zone of rapid temp change separating warm upper layer from cold bottom water
littoral zone
shallow, well lighted, warm waters close to shore, very diverse
limnetic zone
well lighted open surface water father from shore, occupied by variety of phytoplankton, small organisms are short lived sink to prof zone.
profundal zone
deep, aphotic regions of water, decomposition [release nutrients]
dead organic matter
oligotrophic lakes
deep, nutrient poor, limited productivity of phytoplankton, demitris from limnetic is limited so deep water contain lots of oxygen so water = clear
eutrophic lakes
shallower, high nutrients = phytoplankton productive, murky water
bodies of water moving continuously in one direction
cold, clear, little sediment, few mineral nutrients
more nutrients
area covered with water that supports aquatic plants
area where freshwater merge with ocean
intertidal zone
zone where land meets water
neritic zone
shallow regions over continental shelves
oceanic zones
pelagic zone
open water of any depth
benthic zone
abyssal zone
continuous cold, extremely high water pressure, near absence of light, low nutrient
coral reefs
warm tropical waters in neritic zone
oceanic pelagic biome
most of ocean's water, constantly mixed by circulating ocean currents
community in benthic zone
number of individuals per unit area
pattern of spacing among individuals
limits within which is lives
clumped dispersion
aggregated in patches
uniform dispersion
spacing even
random dispersion
varies in unpredictable way
study of statistics that affect population size
age structure
relative number of individuals of each age
fecundity/birth rate
# of offspring produced during a certain amount of time
generation time
avg span b/t the birth of individuals and the birth of their offspring
life table
table of data summarizing mortality in a population
group of individuals of the same age
survivorship curve
plot of #'s in a cohort that are still alive @ each age