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Biodiversity
Lecture 31
35
Biology
Undergraduate 1
05/05/2011

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Term
biogeography
Definition
___ is the science of understanding the geographic distribution of species.
Term
- temperature
- water
- sunlight
- wind
- rocks and soil
Definition
Abiotic factors that affect an organisms' distribution can include:
Term
temperature
Definition
___ is a key factor in biogeography
Term
water availably
Definition
___ is another important factor in species distribution
Term
sunlight intensity
Definition
___ affect photosythesis and organisms sensitive to photoperiod
Term
wind
Definition
___ amplifies the effects of temperature by increasing evaporation
Term
wind
Definition
___ can change the morphology of plants
Term
soil characteristics
Definition
___ affect plants and thus the animals that feed upon them
Term
- physical structure
- pH
- minerals
Definition
What characteristics of soil are important?
Term
climate
Definition
___ is the prevailing weather conditions in an area over time
Term
- temperature
- water
- sunlight
- wind
Definition
Four major components make up climate:
Term
Macroclimate and microclimate
Definition
Climate patterns can be seen on two scales: ___ and ___
Term
macroclimate
Definition
___ is global and regional patterns
Term
microclimate
Definition
___ are fine patterns, such as those underneath a fallen log
Term
Earth's climate patterns
Definition
___ are determined largely by sunshine and the planet's rotation.
Term
sunlight
Definition
___ plays a major part in determining climate.
Term
summer solstice
Definition
northern hemisphere tilts toward the sun; summer begins in the Northern Hemisphere
Term
vernal equinox
Definition
equator faces the sun; all regions experience 12 hours of day
Term
winter solstice
Definition
northern hemisphere tilts away from the sun; summer begins in Southern Hemisphere
Term
wind patterns
Definition
___ also play major parts in determining the Earth's climate
Term
descending, dry
Definition
___, ___ air absorbs moisture
Term
ascending, moist
Definition
___, ___ air releases moisture
Term
landscape
Definition
Features of the ___ contribute to local variations in climate.
Term
oceans, currents, and large lakes
Definition
___, ___, and ___ moderate the climate of nearby terrestrial environments
Term
mountains
Definition
___ affect local temperature and rainfall
Term
the angle of the sun
Definition
___ causes many seasonal changes. we can use this to conserve energy.
Term
biomes
Definition
___ are the major habitats that cover the planet
Term
biomes
Definition
Combinations of biotic and abiotic factors create Earth's ___.
Term
aquatic biomes
Definition
___ cover the largest part of the biosphere
Term
oceans
Definition
___ cover about 75% of Earth's surface
Term
75%
Definition
oceans cover about ___ of earth's surface
Term
oceans
Definition
___ have an enormous impact of the biosphere
Term
light, temperature, and depth
Definition
Many aquatic biomes are stratified into zones defined by ___, ___ and ___
Term
eutrophic lake
Definition
a lake that has a high rate of biological productivity supported by a high rate of nutrient cycling
Term
oligotrophic lake
Definition
a nutrient-poor, clear lake with few phytoplankton
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