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Ecology Exam 1
Terms in this set (27)
what is the origin of the term "ecology?"
eco= oikos (greek) means household/home; coined by german biologist Ernst Haeckel
how do you define "ecology?"
no universally accepted definition. could be the "study of the structure and function of nature"
what does ecology study?
- ecology is a biological discipline that studies many different things
- a science of interactions of organisms; interactions of organisms with their biotic (living) and abiotic (non-living) environments
what is the highest level of organization in the hierarchical structure?
an individual organism...
is the unit of natural selection
a population is...
the unit of evolution
who is Carl Willdenow and Heinrich Humbolt and what are they known for?
point out that regions of the world with similar climates support vegetation similar in form; climate bring about the distribution of plants, it is the MOST IMPORTANT factor
What is Johannes Warming known for?
wrote first textbook on plant ecology
What is Christensen Raunkiaer known for?
classified plants in a unique way
What is Charles Darwin known for?
came up with natural selection and evolution; author of the "origin of species"
What is Gregor Mendel known for?
Mendel is Known for his pea plant breeding experiments and he is the father of all of the Genetics. Darwin and Mendel's theories formed the focus of ecology
What is Henry Cowles known for?
Studied the succession of plants and the Indiana sand dunes; established plant succession as central concept of modern ecology (the idea that there is a succession of plants replaced over and over again over time)
What is Rachel Carson's known for?
Brought environmental problems to the attention of the public; showed chemical pollution is recycled through the environment which lead to the ban of DDT in the USA; also lead to the creation of EPA in the USA.
What is Eugene Odum known for?
father of modern ecology
what happens to solar radiation after it gets to the earth's atmosphere?
about 50% is absorbed the surface of the earth
what happens to light that reaches different surfaces?
snow, ice, trees, bodies, grasses, and water (hint hint albedo)
what is ALBEDO
radiation that is reflected by a surface; how much light is reflected back off the surface of an object once light hits it
what system has the highest albedo?
SNOW and ICE (asian eyelids)
what system has the lowest albedo?
Water because most of it goes right through the water
climate vs weather
Climate is long term, weather is short term
the amount of water vapor present in air expressed as a percentage of the amount needed for saturation at the same temperature.
the pressure that a given concentration of water molecules exert in the atmosphere
the pressure that water vapor exerts when the air is moisture saturated (can hold no more water)
how to calculate VP Deficit
VP deficit = saturation Vp - Current VP
what is the temperature at which saturation VP is achieved for a given water content of the air?
dew point temperature
when temperature increases what happens to VP
it increases since the atmosphere can hold more water at higher temps
how to calculate relative humidity
current VP/saturation VP x100
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