Ecology B/C
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Re: Ecology B/C
Zioly wrote:Simple one.
Name 5 forms of symbiosis. Give examples of each.
1. mutualism (relationship beneficial to both organisms); an example is a bee and a flower 2. commensalism (benefits one organism, while the other is unaffected); an example is a barnacle (benefits) and a crab (unaffected) 3. parasitism (one organism, the parasite, benefits, while the other, the host, is harmed but usually not killed); an example is a tick (parasite) and dog (host) 4. predation (one organism, predator, benefits, while the other, prey, is killed); example is snake (predator) and mouse (prey) 5. competition (organisms inhibit each other's fitness, both are harmed); example is moose and deer, who compete for food/space
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Re: Ecology B/C
All good. Your go.GoofyFoofer wrote:Zioly wrote:Simple one.
Name 5 forms of symbiosis. Give examples of each.1. mutualism (relationship beneficial to both organisms); an example is a bee and a flower 2. commensalism (benefits one organism, while the other is unaffected); an example is a barnacle (benefits) and a crab (unaffected) 3. parasitism (one organism, the parasite, benefits, while the other, the host, is harmed but usually not killed); an example is a tick (parasite) and dog (host) 4. predation (one organism, predator, benefits, while the other, prey, is killed); example is snake (predator) and mouse (prey) 5. competition (organisms inhibit each other's fitness, both are harmed); example is moose and deer, who compete for food/space
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Re: Ecology B/C
Zioly wrote:I'll go since Goofy hasn't gone in 5 days.
Another simple one.
Define Gause's competitive exclusion principle.
no two species can occupy the same niche at the same time
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Re: Ecology B/C
Good job. Your go.gavinnupp wrote:Zioly wrote:I'll go since Goofy hasn't gone in 5 days.
Another simple one.
Define Gause's competitive exclusion principle.no two species can occupy the same niche at the same time
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Re: Ecology B/C
gavinnupp wrote:Under what conditions does deciduous forest occur?Zioly wrote: Good job. Your go.
A forest is considered deciduous when the majority of the vegetation (primarily trees) loses their leaves seasonally (usually autumn), through a process called abscission. Abscission is caused by a physiological process deciduous trees undergo when responding to a loss in gross photosynthetic production, usually from a seasonal climate change.
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Re: Ecology B/C
Well, there are multiple scenarios in which deciduous forests may occur! I'll list them both.gavinnupp wrote:Accurate, but under what precipitation/temperature/latitude/soil?
[b]Temperate Deciduous Forest:[/b] -Found between 30* and 55* latitude. -Most found between 40* and 50*. -In Asia, temperate forests originally covered much of Japan, eastern China, Korea, and eastern Siberia. -In western Europe, temperate deciduous forests extended from souther Scandinavia to northwester Iberia and from the British Isles through eastern Europe. -North American temperate deciduous forests are found from the Atlantic sea coast to the Great Plain. -In the Southern Hemisphere, temperate deciduous foretss are found in souther Chile, New Zealand, and southern Australia. -Temperatures are not extreme, usually 0* to 30* C. Slight "hill" in the summer months. Moderate variation. -Precipitation averages anywhere from 650mm to 3,000 mm. -Growing season is moist and of 4 months long. Winters last from 3 to 4 months. -Soils are usually fertile -Usually neutral or slightly acidic. -Rich in both organic and inorganic matter. -Nutrient movement within deciduous forests is more dynamic than coniferous [b]Tropical Dry Forest[/b] -Found between 10* and 25* latitude -In Africa, tropical dry forests are found to the north and south of the central African rain forests. -In the Americas, tropical dry forests are the natural vegetation of extensive areas south and north of the Amazon rain forest. -They also extend up the west coast of Central America and into North America along the west coast of Mexico. -In Asia, they are mainly found in India and the Indochina peninsula -Australian tropical dry forests form a band across the northeast -Drastic season precipitation variation. 7 month of drought, with 5 months of heavy rainfall. -Precipitation varies heavily between different forests, but typically, there is a large spike in the months of Nov. through April. -Temperatures are consistent, with them usually being between 20* and 30* C. -The soils are very aged and slightly acidic. -They are slightly rich in nutrients. -They are highly vulnerable to erosion, with the torrents of seasonal rain. Therefore, if a temperate forest is deciduous, then the trees are as described previously and react to the dipping temperatures, while if a tropical dry forest is deciduous, the trees react more to the season droughts.
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