Upgrade to remove ads
AP Biology Ch. 10
Terms in this set (20)
Role of abiotic factors in the formation of biomes
climate, weather, soil, pH, wind, etc.
How do biotic and abiotic factors affect the distribution of biomes?
affect the species, etc.
How do changes in these factors alter ecosystems?
changes climate, ecology, etc.
Why are some biomes rich in species abundance? Why is productivity higher in some ecosystems?
Species abundance is related to primary productivity, which provides energy resources, and numerous niches. Productivity is higher in ecosystems that have abundant light energy, warmer temperatures, and longer growing seasons.
How can density, dispersion, and demographics describe a population?
Density: number of individuals per unit of area or volume
Dispersion: pattern of spacing among individuals within the boundaries of the population
Demographics: vital statistics of a population (birth and death rates)
Differences between exponential and logistic growth
Exponential: population growth under ideal conditions
Logistic: per capita rate of increase declines as carrying capacity is reached
How do density-dependent and density-independent factors control population growth?
Density-dependent: death rate rises and birth rate falls as population density rises
Density-independent: death rate does not change with increase in population density
Differences between a fundamental niche and a realized niche
Fundamental: niche potentially occupied by the species
Realized: portion of the fundamental niche the species actually occupies
Role of competitive exclusion in interspecific competition
when two species are vying for a resource, eventually one with the slight reproductive advantage will eliminate the other
(+,-) parasite derives its nourishment from its host
(+,+) both species benefit
(+,0) benefits one of the species but neither harms nor helps the other species
Impact of keystone species on community structure
exert control on community structure by their important ecological niches; creates in balance of trophic levels
Difference between primary and secondary succession
Primary: plants and animals gradually invade an area that was virtually lifeless where soil has not yet formed
Secondary: an existing community has been cleared by a disturbance that leaves the soil intact
How does energy flow through the ecosystem?
10% of the energy from the previous trophic level is passed to the next level; decomposers -> producers -> primary consumers -> secondary consumers -> top predators
Difference between gross primary productivity and net primary productivity
gross primary: total primary production in an ecosystem
net primary: equal to gross primary production - the energy used by the primary producers for their "autotrophic respiration"
Carbon Cycle/ Impact
balance between the amount of carbon dioxide removed from ecosystems by photosynthesis and added by cellular respiration; Impact:: burning of fossil fuels has added significant amounts of additional carbon dioxide to the atmosphere
Nitrogen Cycle/ Impact
moves nitrogen from the atmosphere through the living world, nitrogen fixation (conversion of nitrogen by bacteria to forms that can be used by plants), nitrification (ammonium is converted to nitrates by bacteria for plant consumption), and denitrification (bacteria releases nitrogen to the atmosphere); Impact: acid rain, global warming
Value of biodiversity and the major human threats to it
Genetic diversity, species diversity, and ecosystem diversity; threats: habitat loss, introduced species, over-harvesting, and global change
How is human activity changing the Earth?
increasing extinction rate
THIS SET IS OFTEN IN FOLDERS WITH...
AP BIO ch 53
AP Bio- Chp. 50-55 Ecology
Cellular Respiration, Cellular Respirati…
AP BIO ch 40
YOU MIGHT ALSO LIKE...
AP Bio topic 10
AP Bio: Ecology (53-55)
OTHER SETS BY THIS CREATOR
Ch12: Human Health Risk
Ch11: Solid Waste Generation & Disposal
Ch10: Air Pollution
Ch9: Water Resources & Water Pollution
OTHER QUIZLET SETS
Bio ch 19
Emergency Medicine - Wound Care
APUSH Chapter 1