B5 - Abiotic Resources

abiotic factors

non living factors that affect the organism by creating disturbances. can be good or bad. light, wind, temperature

biotic factors

living factors that affect the organism. logging, herbivores, pathogens..

beneficial effect

effect that ultimately increases the number of reproductive offspring.

harmful effect

effect that decrease the reproductive success.

pulse effect

happens one time. limited time impact. wind, storms, huricanes, volcanos

push effect

constantly affecting the organism. continuous impact. light, temperature, soil ph

forest texture

influences the moisture retention, nutrient availability, and organism life.

jory soil

state soil of Oregon. dominant in the foothills of the Willamette Valley. very productive. grows forest, wheat, wine..

nutrient cycle steps

1) Nutrients help vegetation grow

2) dead leaves and organic matter fall onto the groun

3) decomposers release nutrients into the soil from the organic matter/dead leaves

4) the roots take up the nutrients for growth and life.

5) repeat

why forests are only found in habitats with a specific temperature range

mesic conditions enable water transportation and absorb solar energy. mesic without extreme temperatures enable plants to be long lives and late successional species.

beneficial effects of light level

increases energy for photosynthesis, gives information to plants

harmful effect of light level

heat associated with light can cause plant damage, can overload photosynthetic system.

shade avoidance response

changes in plant growth and development that occur when plants detect shade from neighboring vegetation.

list two ways that forest and resource managers use light in their operations.

nurseries use light to grow plants for favorable traits, dense stands like shade, foresters tend to thin stands for more light and water.